How to get the best out of this forum


Welcome to the Arduino Forum.
This guide explains how to get the best out of this forum. Please read and follow the instructions below.

Being new here you might think this is having rules for the sake of rules, but that is not the case. If you don’t follow the guidelines all that happens is there is a long exchange of posts while we try to get you to tell us what we need in order to help you, which is frustrating for you and frustrating for us.

The people who try to help with your project are volunteers doing this for free in their spare time. If you follow these guidelines it helps us to help you and gets your project working quickly.

Without the correct information, it is difficult or impossible to give you the help you need.

Preferred language
If English is not your preferred language there are categories in other languages


Below are some things we need which are often missed by people posting for the first time

Choose the right category of the Forum

There are lots of different categories to choose from. Choosing the right one is important because not everyone who might be able to help you reads every category. Some questions might reasonably fit in to more than one category but please do not post the same question in two or more different categories. This just wastes your time and ours as different people will be providing different answers in different places. For this reason, it is against the forum rules and will incur the wrath of the moderators when they see it.


We need to know exactly what hardware you have. We need to know what Arduino board (or other brand, such as ESP32) you are using and exactly what other hardware you are connecting it to. The more details we have, the easier it is to help.

If you are using something that is a non-Arduino product then it helps to have a link to its technical data sheet or a link to where you bought it.

Code problems

We can only find problems in code we can see. Please supply your complete code in code tags </> More about posting code and using code tags. If you are using Arduino Create then you can post a link to your project (but keep in mind that not everyone uses Arduino Create).

Posting a snippet of code is generally useless. The problem is usually in another part of the program.

Before posting code, please use Tools / Auto Format at the top of the IDE. It makes the code much easier to read and you will probably find it very helpful yourself. Once you've done that, use Edit / Copy for Forum.

Always use code tags (</>) when posting code or compiler error messages.
Using code tags makes the code easier to read and easy to copy. Not using code tags means some of the code gets displayed with smiley faces and other stuff that should not be there. Be aware that there is a limit of 120000 characters for a post. If your code takes you above this limit then you can add your .ino file as an attachment. However, it will be much easier to help you if you can write a short program that illustrates the problem you are having and post that.

Please don't post an image of code instead of the code itself, or an image of error messages instead of the error messages themselves.

It is very important to be clear about what is expected from code and what happens instead. Code ALWAYS works; that is the nature of code. Whether it does what you expect is a different thing altogether. We need to know what you expected the code to do and what happened instead.
More about posting code and common code problems.

Schematics or circuit diagrams

The language of electronics is a schematic or circuit diagram. Long descriptions of what is connected to what are generally useless. A schematic is a drawing of what connects to what; please make one and photograph it. We don't mind if it's hand drawn, scruffy and does not use the correct symbols. Please don't post Fritzing diagrams. They may look nice but they are very easy to misinterpret

If you want to use computer software to create a schematic, then you might like to try either Eagle or KiCad.
More about creating a schematic of your project including how to upload an image.


Please try to avoid posting links to other sites where code or photos or schematics are hosted. Most of us will not follow such links, partly due to the risk that they hold malware or other unwanted content, partly to maintain everything on this site for the benefit of future users looking for an answer to a similar question, and partly because we feel that if you want our help you should provide everything we need on this site not expect us to go hunting elsewhere for it.


Please do some research before posting. Most beginner problems have already been dealt with on the Forum so please use the forum search tool and the Arduino Help Center to try and find an answer to your question. You can also use your favorite search engine to find answers too.

Be specific

Please ask a specific question about the problem you are having so we can provide a clear, specific answer.

If you don't understand some of the advice that you get, please say so. Then we can explain in more detail. If you want to know more about how to ask a question that is likely to get a really helpful answer, then have a read of this, admittedly rather long, tutorial How To Ask Questions The Smart Way and use the principles explained there to ask a really effective question here.

About us

Those of us answering questions have a wide variety of backgrounds and electronics knowledge, some through working in electronics or computing, some through electronics or computing as a hobby, some both. Most of us are not trained as teachers so probably miss the finer points of how to teach and explain things effectively. We are not, with the odd exception, employees or representatives of Arduino.
Please also remember we are volunteers doing this for free in our spare time and are more inclined to help people who make it easy for us to provide help by providing the information we ask for.

About you

We only know about you and your project what you tell us. If you tell us your level of experience with electronics or microcontrollers, we can tailor our answer to your level of knowledge. We also don't know if you have problems with English or language or communication in general unless you tell us. We can be sympathetic about things we know about, but if you don't tell us we don't know.

More information

There is more information below.

Making your first post

Now please go to the forum index, select the right category and make your first post.

Thank you.

Making your first post

1. Choose the right category

It is important to choose the right category and the right language so that the people most likely to be able to help you will see your question. Not everyone here reads questions in every category so please take your time and post in a category related to your question.

If English is not your preferred language then scroll down and choose from one of the other language categories.

Please only post in English in the English language categories. If your language is not shown then please use Google Translate and post in an English language category using English.

Forum categories

2. Make a topic

Once you have found the right category you can start your post. Click on New Topic

Starting a new topic

3. Write your post

Enter a title and a description of your problem:

Don't forget to include code in code tags </> and a schematic of your circuit.

For your first two posts, the right hand side of the post composer pane will show a welcome message. Once you have closed that message, you will see a preview of how your post will look once you have submitted it.

4. Publish your topic

When you are happy with your post click on + Create Topic to post it.

That's your first post completed.

Posting code and common code problems

Post all your code

Without your code, all your code, we cannot provide any answers about your code, other than the most vague and probably unhelpful of answers. One of the frustrating things about writing code is that a mistake in one place can produce an error in what seems like a completely different, unrelated place. This is a nightmare if you are new to writing code, but often easy to spot for anyone who is experienced in looking for such problems. It is for this reason we want all your code, not just the bit with the error or the bit you think is causing the problem.

Format your code

Before copying your code for the forum, look in Tools on the menu bar of the Arduino IDE and select Auto Format. This will format the code correctly. If you prefer, Ctrl+T will do the same thing. Once formatted, you can copy and paste your code with code tags.

Use code tags

Code should be be in code tags, these are the </> in the tool bar above where you edit your post, and correctly formatted, like this:

char message[][4] = { "hi", "bye" };

void setup() {
  //Serial.begin() configures the serial port

void loop() {
  for (byte x = 0; x < 2; x++) {

If you don't use code tags then it ends up like this:

char message[4] = { "hi", "bye" }; // <---- There's a box now

void setup() {
//Serial.begin() configures the serial port // <---- Some strange link
Serial.begin(9600); // <---- Indentation lost

void loop() {
for (byte x = 0; x < 2; x++) {
Serial.println(message); // <---- There's a checkbox

There's more than one way to add code tags, you can:

  • Paste your code in the box where you are editing your post, select all the code and click on </>.
  • In the Arduino IDE under the 'Edit' menu there is 'Copy for Forum', this puts your code on the clipboard with code tags added ready to paste into your question.

Minimal, Reproducible Example

The forum has a limit of 120000 characters per post, which means that you can't post a program longer than this directly. In this case, you can attach the .ino file to your post or, if you are using Arduino Create, you can post a link to your project.

However, consider that the longer your program, the harder it is for anyone to understand it and help you. For this reason, consider writing a short program that illustrates the problem and post or link to that instead. You are more likely to get help with a short, easy to understand program than with a long, complicated one. For more about this see How to create a Minimal, Reproducible Example.

Error messages

When you compile your code the Arduino IDE will check for certain problems with the code and generate error messages to indicate any problems it finds. If this happens then we need to see the error messages as well as the complete code, as the error messages offer clues to what the problem is. If you have error messages then in the bottom right hand corner of the IDE there will be a button 'Copy error messages'. Click the button and paste the result into your question, don't forget to add the code tags.

Common mistakes with code and posting code

Posting a screenshot of code or error messages. A screenshot is useless, with a screenshot it is impossible for us to paste the code into the IDE and test it. Please post your code and error messages, not an image of them.

Only posting the part of the code you think has the problem. Often code problems are not in the place they might obviously seem to be, often a mistake in one place shows up as a problem elsewhere. The only way to see this is to see all the code. Also be aware that some mistakes cause a cascade of multiple errors. If this happens, deal with the first one and see if the other disappear.

It is essential that every opening bracket has a corresponding closing bracket. Check that every { has a corresponding }, every ( has a corresponding ) and every [ has a corresponding ] before you post your code. In the IDE if you place your cursor next to any bracket of any kind the IDE will draw a rectangle round its partner, if there's no corresponding bracket, or there is a corresponding bracket but it's not the one you expected then you have found your problem. Also, if you use Auto Format (Tools > Auto Format or Ctrl+T) your code will be tidied up and missing brackets of all kinds should become a lot easier to see.

Forum rules and netiquette

The instructions above are to help you make a successful post, 'successful' meaning you get a useful and satisfactory answer to your question. In order to keep the forum working smoothly there are some rules that apply to everyone, breaches of which can lead to suspension or being removed from the forum altogether.

Only ask your question once, in one category of the forum

We know you are anxious to get an answer to your problem, but re-posting the same question to multiple categories of the forum causes duplicate effort, and divides the focus on your problem. You'll get a better answer if everyone can discuss it in one place. Asking the same question multiple times is called cross-posting. Cross-posting is very annoying to people trying to help you. If you cross-post, the moderators will delete your extra posts, and you will get a warning. Save all the hassle, and just post the question once. It will be noticed.

If you aren't sure which category to post in (Programming Questions, General Electronics, etc.), make a guess. Don't cross-post "just in case".

Start a new topic; don't hijack an existing topic

You might see an existing topic related to what you want to ask and think about tagging your question on the end. Please don't do this. If the existing question is just what you were looking for and the answer helps you then there is no need. Otherwise, the existing topic isn't what you were looking for and you should create a new topic. There's no harm including a link back to the existing discussion if you think there's some relevance.

Don't bump!

Don't bump your topic after an hour. Because of the different time zones, the person who knows the answer may be asleep, or away for the day or maybe on holiday. Maybe after a couple of days, but even then think about whether you have provided enough information and asked a question that can be answered. You could even ask us 'what else can I provide in order to get some help?'.

Getting help from a particular person

You might have read answers from a particular person and think that person would be the best person to help you. You can bring your question to someone's attention by using @ followed by their username, for example @username. If you do this, they will get a notification. Please do not send a PM (private message) to someone you don't know asking a question; most will ignore you.

Commercial projects

One thing really guaranteed to ensure you don't get help is to tell us you can't provide all the information because it is commercially confidential. If it's commercially confidential then you should consider paying someone to help you and ensure a confidentiality agreement is in place with them. If you want help with a commercial project then create a topic in 'Gigs and Collaborations' and indicate what your terms are, including how much your budget is. This is a hobby forum, not a place for free help with commercial projects.

Ready written code

Ready written code for every possible application does not exist, including for your application. Asking for the code for what you are trying to do will not get you anywhere, other than possibly some annoyed replies. You either have to write your own, which we are here to help with when you get stuck, or you can pay for someone else to write it for you. If you want someone to write code for you the place to ask is 'Gigs and Collaborations'. If you neither want to learn to write code yourself nor pay someone else to do it for you then this is probably not the right place for you.

Be polite

A little courtesy and politeness goes a long way. Even if you think a question has been asked before, or you don't see the point of it, try to answer politely. Remember a lot of the posters with high post counts see the same questions every day, and they may get a bit terse if you appear not to have tried very hard to help yourself in the first place. You will find that if you respond in a friendly way, people will stick with you and you will almost certainly get your problem solved. Personal insults, rudeness and offensive language are not acceptable and will result in a ban. Stick to the topic.


TYPING IN ALL UPPER CASE is considered to be SHOUTING. It won't get you an answer any quicker, it will just annoy people.


We get a lot of questions from students wanting help with their homework. Such questions are generally one of two kinds: Questions by students who are obviously making a real effort but have got stuck; these get helpful answers. Questions from students who are obviously not making any effort at all and just want someone to do their homework for them; these usually get a lecture. By all means, post homework questions when you are stuck, but make sure you've put some effort in first.

Thank people who help you

Those of us who answer questions on here are doing so for free, out of community spirit. Please thank people who provide helpful answers and don't forget to give :heart:s as well.

It also helps if you click the :ballot_box_with_check: Solution button at the bottom of the reply that answered your question. This will make it easy for helpers to see that it is solved and for others with the same question to find the answer quickly.


Much of this tutorial has been inspired by or copied from the original forum instructions created by Nick Gammon.
My thanks to Ballscrewbob, Robin2 and Idahowalker all of whom have provided a great deal of support and feedback, without which this tutorial would contain far more errors than it does and would be a lot less clear than it is.


Please provide comments, feedback or suggestions for improvements for these instructions here.

Thank you.

How to get the best from this forum feedback and comments
Object measurements
Code Request - 3 100k NTC Data Logging - Teensy LC
How to add bus in arduino
DHT11 gives only 0% humidity en 0°C
How to get the best out of this forum
DSS-m15S is not working
Arduino programming counter
Need Assistance concerning charging and accelerometer
Unable to change ESP32-S2 Power
</> Marlin 2.0 does not compile while I define Display
How to stop the clock if i press the push button again?
Stepper motor with SEA5045
Fi̇nger pri̇nt module help
Code help losing my mind : read the top of the code/*here*/
How to implement a timer on an arduino micro
PIR sensor with running light
DHT22 NODEMCU problem uploading
Test upload code via HTTP for Atmega2560
I dont know how to solve this problem
Controlling a servo motor with a potentiometer using Millis
Converting a Datastream into an Array
Please corect this code
Project with Ultrasonic Sensor, Stepmotor and Servomotor
Eps32 Voltmeter is measuring incorrectly. For example, when the voltage is 12.00, it is 10.50. Measures -1.5 volts
Project with Ultrasonic Sensor, Stepmotor and Servomotor
HELP! LEGO Millennium Falcon FASTLED engine starting sequence
Odd Characters When Reading From a AT24C32 and Using Serial.print()
People counter keeps counting
Wheel Encoder Tick counter error
Buttons don't work
Coding help with servos
Coding doubt in serial monitor
Rotary Encoder with LCD2004A
I am working on R307 i can perfectly enroll my finger print but when I go for fingerprint.ino on serial mointor it continuouslly give command of no finger dedected as it s in loop how can i solve this
See if condition last for 2 minutes
Hello every body i need help for this code
Temperatura inicial y final
Hello every body i need help for this code
How can I reset the score after the results to 0 - 0?
Arduino codings
Sending an int = 1 from quest 2 to an esp32 through Bluetooth serialport is not working
Automatic door handle sanitiser
How to port this to esp32 (Captive Portal)
NAN value a BIG problem
NAN value a BIG problem
NAN value a BIG problem
PIR sensor with running light
MAX30100 vs MAX30102 vs MAX30105
Stepper mottor plus ultrasonic
Count pulses at the digital input pin into a time period
LED crossfade White to Orange
NAN value a BIG problem
Cannot get data from arduino json UDP
Question [Heating Pad]
ESP8266 undifine reference
PROGMEM problems with arrays
Receive data from Arduino in Python
Bluetooth + Serial Monitor = Trouble?
Error: 'init' is not a member of 'U8GLIB'
Automatic Chicken Feeder
Do you know how this relay module connects?
MPR 121 for Daisy Seed, Sensor not found
Having trouble running a 360 fs90r servo
Ich bin hier neu und wollte etwas von euch wissen (habe es aber selber hin bekommen ), Hier ein kleines Programm zu m ES32 mini ,it Neopixel 60 und LDR
Oled display stuck with logo
Concatenate Char* and uint64_t
Please corect this code
How to get the best out of this forum (short version)
Expected primary-expression before 'client' with WiFiEspClient client
MPU-6050 calibrating problem
Cannot fix my compiling error
Having issues with "D6 was not declared in this scope" for a wifi control led matrix
detachInterrupt() not working?!
Need Assistance concerning charging and accelerometer
Dual H-Bridge L293D and 90 rmp 12V motor
1 Button and 1 pontetiometer
Arduino TCP no connection
Windows compiling issues
Arduino Blynk Error
I.m clearly thick.... dividing bytes
Delay On Delay Off Timing With Leds
Problem with an I2C Pin Expander
Trying to use button with Arduino Leonardo
Control RGB LED 5050 Stripe with IOT Remote
Project find random number
Use local variable in another function
Ss49e linear hall sensor oled display progress bar
Upload images and/or new project file to the nextion via Arduino
Trying to change the position of a servo using two click buttons
Counter on LCD display
Display "Low,Meduim,High" in LCD by potentiometer
Accel Stepper Library Forward and Backward Motion
Finding the maximum and minimum of a servo motor?
Wdt reset - firebase & esp8266
Need a little help arduino stepper motor with ir contol
Arduino Looping states in Void Loop help needed for a novice.
Need help Arduino Guessing number
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
Relay do not switch
How to get the best out of this forum
Using millis() and if statement to run ultrasonic sensor and servo motors
Schematic 'Frying' Arduino Zero
Arduino UNO R3 using two outputs dependent to different inputs
Display problem freezes
BLE Peripheral Not connecting…
Need pwm signal
Arduino codes with LoRa communication
Oled display flickers when I set time in code
MOSFET type issues
How can dedicate hardware ecraption
If(vw_get_message... fails always, transmitter seems to be functioning
Clone Hero Drums
Building an advanced guitar tuner with special features with a seeduino and a grove starter kit
'RTC' was not declared in the scope
How to understand this.. cant replace the the code
How to read flow using flow meter without interrupts
Compass and GPS fail
LCD second row not working
Help using ds1302
Oled display progres bar I want to view but I couldn't Connect
Need help in using DS18b20 to calculate breath per minute
Bitte um ein Code-Review (Arduino Nano, Thermistor)
Problem with Switch command
Controlling a digital and analogue servo with one arduino uno
Button on/off Servo
Tracking sun using gps
Push button w/Blink
Serial read_int
Arduino uno executing program during power failure
Reading Serial Problems
Problem with callback function in ESP32 wifi library
Proplem in arduino nano
Has anyone used nrf24L01, H-Bridge, Servo code together?
Weird time behavior (millis, delay and tune) when the processor runs outside the Arduino board
Feetech Continuos servo and arduino nano
Error setting up serial communication
Push button w/Blink
How to cotnroll multiple servos at once
Has anyone used nrf24L01, H-Bridge, Servo code together?
PWM signal to TTL
How I get two input from arduino via bluetooth
Output to operate as (and in parallel with) momentary pushbutton
Output to operate as (and in parallel with) momentary pushbutton
Include H and Cpp file in main sketch
Arduino Explore IoT Kit MRK 1010
Adafruit NeoPixel crashing with colorWipe
All is okay but wheels not turning/spinning/rotating - self balancing robot
Beginning Arduino/Circuits - Middle School Age Appropriate
8 Digit - 7-Segment display turns off after 10 seconds
Power Distribution Question
#include giving me errors
IF statement doesn’t work properly
School Project-Error compiling for board Arduino Nano not working on arduino mkr wifi 1010
RGB LED not responding to Serial Monitor Input
Need help on DF Mini Player activation
Arduino not working with FTDI Driver and USB
Problem interfacing GYML8511 UV Sensor an offset is always present
Fault detection in an optical fiber using arduino
MAX30100 Pulseoxymeter showing random characters
CAN BUS Output to a AIM solo2 DL
MAX30100 Pulseoxymeter showing random characters
Fault detection in an optical fiber using arduino
MXP 5100AP (Absolute Pressure Sensor) UPDATE/EDIT
Robot moving in a queue fo social distancing and mask detection this code is for the straight line movement please what is wrong in the code
Reading RS232 data with arduino uno
SHA256 encryption for Dynamodb
Arduino Explore IoT Kit MRK 1010
Please slove this error
Newbie here- can somebody help me with explaining the code here and the shematics
Please slove this error
Wie man das Forum benutzt - Kommentare und Verbesserungsvorschläge
Blood Pressure Measurement using Korotkoff Sounds
Arduino Robot Car (limit switch)
GY-91 Sendor - avrdude errors
Unable to display/print on the serial monitor #STM32
Arduino not giving signals to LN298 or mistaken wiring
Photocell as switch to step a program?
Pushbutton problem
Millis timing relays start with a pushbutton
Two Charlieplex modules to one Arduino
MMA8452Q tilt sensor
Hello every one , I want help pleas , i want to mointor the battery voltag with web server page
Multiple DHT22 Sensors with LCD I2C display [SOLVED]
Multiple DHT22 Sensors with LCD I2C display [SOLVED]
Quick question about TCA9548A addressing
Need help with EEPROM
Swprintf and wchar_t?
Delay within an extra void not working?
How To Use The Mills() Fonction
Transmit date de HX711 by 433 Mhz RF transmissor
My cnc is not working properly
Hello every one , I want help pleas , i want to mointor the battery voltag with web server page with ethernet
Websocket send data from ina219 help
Turn on LED with Bluetooth
Smart parking using iot
Servo loops 5 times then turns continuously
How to use Arduino mega with lcd 128x64
How do i interface Eemprom with Linear Acuator
Portenta WIFI and RPC compilation error
DS18B20 simulator
Same sketch doesnt work on 2 different arduino nanos
Max30102 heartrate sensor problem
MP3 shield interferring with Serial Monitor (I think). How can we all get along?
Merging codes with Arduino
Arduino UNO Schematic
ESP32 arduino cloud Widget not working
Fast.LED lib fade without slowing the loop
RC522 dropping a character from the middle of UID
Requesting for help in my program ,pleas help me out
Image transmission 0V7670
Got scheduler's multiple blink to work on nano 2040 connect
Digishark ATtiny85 is skipping lines
How to add ON/OFF button in blynk
How to use millis()
Wie man dieses Forum benutzt - bitte lesen
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
How to get the best out of this forum
Need help with some Radar System code
How to use this forum - please read.
Project-Help /Arduino Nano 33 IOT
One pushbutton change led lighting timing
Clear CANbus buffer
Can Somone Help Me Please!
Not loading to LCD
Sending through a signal
Arduino quiz with LCD
Arduino uno Loadcell "if statements error"
Remote tractor Shutdown Ver 2.0
Expected unqualified-id before 'else' help
Motors attached to L298n not rotating withlower PWM values
Arduino pozyx multitag positioning
Add arduino read data from sensors
Arduino RPM Light using OBD2
Stepper motor random direction change
Hi everyone, i am getting error on code generation, can anyone help me?
DRV8825 arduino
ESP8266 D1 Wifi board, can't find the port on MAC OS
Arduino e workshop4
Sensing the signal and put delay based on RPM and then OUTPUT
List the forum sub-categories as an actual list
Serial moniter not working with hc-05 bluetooth module
Seven segment LED for cathode
Duetimer incompatible with FastLED?
12V Relay Drive circuits conflicting with AnalogRead of Battery
Jai fait ce code pour commander un palan electrique a distance a laide du app inventor et arduino .. ma seul probleme c est que le module relais ne fonctionne pas bien avec le programme
Create array and how to pass to a routine
Need help with schoolwork, appreciated
Using SPI for IO Expander
TouchScreen Velleman VMA412
How do I reset variable after song finishes playing?
Having trouble getting two wheels to work
Code for random alarm in 6 hour shift Arduino uno
Ironman Helmet with servo and sound help
Determine the average of several sensors
Something is wrong with my millis() timer
Display stays blank after uploading
Encoder on PIN A2-A3
When Yelling at The Sound Sensor the Speaker Plays?
I can't solve this error in verification mode
Help with PID Control Project
MAME ARCADE STICK with 16 keyboard keys using Arduino Leonardo
LED's not lighting up unless bridged
I'm using Arduino Nano and it gives an error like "Low memory available, may cause stability problems"
Stepper Motor Programming Questions
Need help with MG99R pan tilt
Using Nextion displays with Arduino
BLDC Motor Controller with Arduino, keeps broken
Error compiling LED/photodiode script from Arduino Mega to Arduino Nano Every
Three soil moisture sensors problem
I need help with my lcd selector system!
Looking for help on a stepper sketch
Atmega328p PCB Led slowly powered
Help on displaying current step of stepper motor
Controlling 8 BLDC motor with arduino
Adding rotary dip switches
Nrf24L01 Antenna Problem
Uint8_t trigger meaning
How to make 2 pins do the same thing?
Serial communication problems 2
How to reset every pin when changing between functions?
Help needed: generation of 2 PWM outputs using the same Timer
LEDs Help required
Freenove Tracking Line
Expanded scale on a LCD bargraph?
Error message byte 2
DT6-1A-01 I2C Arduino UNO code (seat occupancy detection)
Common ground and why you need one
CoinSlot and CoinHopper , COIN CHANGER CODE
Senior project assistance
LEDs Help required
LCD screen for Arduino UNO onlys shows a row of white boxes on top row
Cd player controller
RTC error message "Not declared in scope"
Controlling brushless motor with PCA9685
Relay with button
Probleme envoie d'une requete Arduino shield ethernet
RS485 how to send 2 integers and receive in slave
Soldering station help
Nano serial com issue
Error esp32 upload CAN ANYONE HELP
Error when trying to send an image via FTP from ESP32-CAM
My LED won't blink with if statement
Control 8 channel relay module by arduino uno and nodemcu
How to add ON/OFF button in blynk
I need help with this project
SD data logger fails
Arduino& python serial
Timing with using millis()
Need Intro Project Help!
Arduino Tutors?
Digital pin reading "High" when plugged into specific computer
Issues using Arduino micro to control volume keys
Need 25 Pin as out put 2 pins for sensor & 23 for Relays
Bosch 4 bar map sensor not reading after 2 bar?
Please help me with my stepper motor issue
Dot Matrixes not displaying programmed display
Help with motors - only forward or backward. [L293D & NodeMCU v2]
Multiple ultrasonic sensor not working but wroking indivisualy
How to Code 28BYJ-48 Step Motor for Vending Machine
Nano serial com issue
Mega 2650 solar tracker LDR Relay
My second RTC module, another broken one [Solved]
Another Weather Station (with e-Paper)
Cannot get code to work with ATmega328P
Best powersupply for Arduino Mkr 1000
Urgent Help Needed Please!
IDE 2.0 Beta 7 ; Serial monitor displays the wrong switching states HIGH/LOW
Stepper Vibrate - Empty Arduino
SSD1306 display troubleshoot
Esp32 Not decoding Li-Fi
Problems with my code
Errors with .init
Errors Onesheeld code please help me
Proyecto Dispensador fino graneador
Same timing variable returning two different times
LCD is functioning, will not display
Uploading Error after boxing it
My code keeps repeating from the previous code that I programed
Reading Sensor Values from Myoware Muscle Sensor
CT SENSOR Calibration (Very Important)
How often does an arduino check a value
Problem with connecting a MCP23017 with arduino Uno
Is it necessary to power a motor via an encoder?
Sim 800L yazılım hata
Loss of internet access but not Ethernet Arduino mega with Ethernet shield
Arduino doesn't display anything
Push button Switches Won't work
Survey the data transfer speed of ESP32-Wifi
ILI9486 TFT touch screen caused unexpected circuit behavior
3x4 Keypad detecting "*" instead of "0"
Can you store a lines of code in a variable?
Why is my if statement (bottom of code) causing an error in my #define string at the top?
Choosing microphone sensor for long range
Coin operated water dispenser help!
TCS3200 color sensor returning 0 values for RGB [solved]
MCP4725 ardunio
Issue in String Comparison
Arduino Door lock system using fingerprint and keypad both
Using Arduino Nano as a IR Remote Switch
How to merge two codes together?
Li-Fi based Text Communication between Two Arduino
Using namespace to separate two "functions" in one ino file
I2C LCD(16,2) not displaying text
ICM-20948 SDK out of memory when using DMP
Arduino Door lock system using fingerprint and keypad both
Compare problem
Multiple TFT Displays with Due using multiplexed SPI CS
Marlin firmware, 'init' is not a member of 'U8GLIB'
Water Flow sensor Switch
Ldr sensor problem
How to increase analog output pin current?
Arduino Sensor Kit : arduino_sensorkit 1.0.9 library for I2C buggy?
Having trouble with the "if" function
5.1 volume control
Keypad problem with ghost keys
AtMega328p and Relays
Reading a 5 bit encoder on a Port with 0ne instruction
Arduino DS3231 RTC coding question
Keyestudio ccs811
Send HIGH or LOW signals from micro:bit to arduino using micro:bit pin 0
Data section exceeds available space in board
Code writing problem
Converting from byte to integer in arduino
My MPU 6050 is not connecting
Nrf24l01 module not working
Arduino robot stops working when I disconnect it from the laptop
Compiler errors with TFT ili9341
SPI problem with radio and SD devices
Unable to find string literal operator 'operator“”redmi' with 'const char [11]', 'unsigned int' arguments
Color sensor RGB
Stepper motor driver power LED not switching on
How to implement arduino emergency button
Missing library board files
Sketch does does not execute on UNO R3 + WiFi ATmega328P+ESP8266 (32Mb memory) USB-TTL
Send String via Bluetooth
Serial Monitor error, using ESP32
ButtonPress - setting of variable
Rotary Encoder LCD Blinking text
Serial connection issue
Adafruit SSD1306 & DHT Sensor libraries, any know issues?
Variating 5v voltage
Code needs double checking
Help needed with RTC1307 Code :)
Transistors or resistors in parallel
NodeMCU does not light properly. Attendance system using RFID, nodeMCU and arduino uno
No matching function for call to 'HardwareSerial::println(FirebaseJsonData&)'
Motion Sensor Light timer
Help required with Arduino, TB6600 driver and Nema23 Stepper motor
Arduino Speen sensor from Joy it
Setting up the Relays to water for 30 seconds each when individually triggered
Problem with if()
Weird compilation error
Servo shifts to last position of other pwm servo
First try with .h and .cpp, Multiple Definition issue
New to arduino and coding
Arduino Editor Issue
Error? DHTPIN was not declared in this scope
I2C LCD(16,2) not displaying text
Problème d’alimentation : câble trop long?
(Beginner) Logic understanding problem for a toggle switch
Schematic for my useless box (first project)
Very Broken program
I am having an issue sending and receiving $_POST values in my PHP script
Trying to make a simple Lixie clock and cant Figure out the code
Why does my code not loop?
Sorting data before averaging
Help ! Serial Monitor
All A Ports Reading Weird
Remote control (on/off)
How a character is converted to a string. How to read data such as Esp32, bluetooth low energy Serial.readString ()
Set Timer for automatic pet feeder
How i can save string password in eeprom when i change password
I have problem with the if statment
My rfid won't read a card
How do i connect autonics temperature and humidity sensor with arduino
NRF24L01 Causes servo to vibrate
Increase the number of led matrix to 8
I'm trying to write simple code to move my servo but cant figure it out!
Glcd project using arduino uno
Arduino not connected on raspberry pi reboot
Question about direct current motors
Run the Goldbach Conjecture
How to get the best from this forum feedback and comments
chipKIT MAX32 - Serial Monitor
Engine coolant sensor trouble
DC motor turn on if sensor triggerd untril button pressed
Connecting the Arduino with an UR3
Arduino short pulse issue
Arrays in a library
Loop is broken (led is not blinking for long time it was broken)
How do I trigger a continuous servo motor (FS90R) with an ultrasonic sensor (HC-SR04)?
Alarm clock coding error
Error Playing a Mellodia "exit status 1 aggregate 'timer treplaceMe611347' has incomplete type and cannot be defined" using ProtoThreads Library and Timer
TFT_eSPI touch demo compile error
A simple question
I’m a beginner to arduino programming. I’m trying to develop home automation project based with blynk. I’m trying to memorize commands on the EEPROM.This is my code. Please Help to modify it
SSD1306 allocation problem
Function-definition is not allowed here before ‘{’ token
Lcd I2C 16x2 doesn't work
How to fetch data from node mcu to arduino uno
Stepper motor code question
However i am getting the error code, expected unqualified-id before numeric constant, on line two. has any one got any ideas on how this can be solved?
Would this Nano every code runs on a Nano Atmega?
Finding the minimum, middle and maximum values
How can I output a signal from an electric guitar to an amp with arduino uno?
Old UNO sketch has failed
A bug for grammar auto checking IDE 2.0. beta 7
May I know why would this happened and how can I solve it?
Need help with explaining me a code
Help needed to merge two void loops
Detect key press while running algoirhtm
Problems with sending can bus message using arduino DUE
Servo motor with one button
I'm having servo trouble
Struggle to run Arduino Uno Wifi R2 for more than 5 minutes.... :|
Facing problem with EEPROM results
I’m new. Please help me with this coding
New guy trying to learn
MAX30105 heart rate sensor not recognized by its own library
TX to rx and RX to TX aint working correct
Serial Input from multiple characters
Arduino 1 switch , 1 poten , 1 lcd , 1 buzzer
Servo rotates 180 degrees with UNO, but only about 80 degrees with D1 Mini Pro (esp8266)
How to name the temperature sensors instead of printing address using ds2482-100 and ds18b20 sensor- Help
Bluetooth module lib
LED Cube Verticle Animation Failure
Motor with fixed frequency but changing amplitude
Error message : a function-definition is not allowed here before '{' token
Program for combination of falme and temprature sensor with 2 module relay
Creating a window of time using TimeAlarms
Serial Communication between Two Arduino Boards
ESP8622 and MCP23016 .-. pinout GPIO.1 , 2 , 3 ... 7 selection
Any one can help me to know how to fix this error when i used MPU-6050
Can I still record data in my SD card module even if my arduino is not connected to the laptop, however my arduino is connected to a power source?
Need Help with programming this code
Some really basic questions on circuit boards
Avrdude stk500-getsync () : arduino uno and mega 2560 avrdude
Serial.readString and pasreInt printing random data
Comparing two ds20b18 values
A bit of help in Modifying the Program
I am trying to interface LM35 temperature sensor and soil moisture sensor
How do I declare for "sendCommand" and "getData"
LMD298 doesnt drive till analogpin has no voltage
ESP8266WiFi Lib Error
Client.connect help
Included library needs to be inculded
Parsing numbers from RS232
Request Serial data
The merits of delay() vs millis()
Convert code from nano to work on mega2560
MAX30105 was not found. Please check wiring/power
Timing Sensor input
How do I switch this from working with TMP36 to DHT11?
Triggering 3 Separate Servos with 3 Separate Sensors
Programing for N298
Coding in arduino ide
Can't get two rf24 to communicate
How to add velocity to your code
Robot bluetooth control and obstacle avoiding
68:4: error: #error "Required HOMING_CYCLE_0 not defined." #error "Required HOMING_CYCLE_0 not defined."
Can Anyone Help Me Understand What I am Doing Wrong?
68:4: error: #error "Required HOMING_CYCLE_0 not defined." #error "Required HOMING_CYCLE_0 not defined."
MeanWell HLG PWM controll
IR sensor spitting out multiple different codes for the same button, and occasional 0's?
CAN-BUS Shield interface with 7 segment display
Problem with printing out a random number
Problem with TFT screen while compiling
Digital RCU tester
Problems with Potentiometer
TFT lcd blank screen
Communication between TWO Arduino nano 33 ble sense
[Solved] Problem with Arduino Logic Analyzer project
Starter experiment/ invalid library
Sending sensor data to cloud server using Arduino Uno and ESP8266
Duplicate rows on 32 x 64 LED Matrix display
Hello team help
Project code sugestion
Monitoring project for a small fish farm
Two sequence using a switch and 8LED
Arduino code for pin i/o over BLE
Self Balancing Robot project- wheels only spin in one direction
My Arduino gesture control project
Facing problem with EEPROM results
Arduino code for pin i/o over BLE
SoftwareSerial TX problem
Using a class from a separate .cpp is not working
Arduino relay and motor issue
Neopixel WS2812B need find code int
Ultrasonic Sensor Code
Arduino code for pin i/o over BLE
Ultrasonic Sensor Code suggestion
Need to run the loop function only when I call any function
BMP180 init fail
Flame sensore detects dire where there isnt
Powering and Controlling Separate LED Strips
ESP32 : Missing terminating " character
Hello i need some help with ultrasonic sensors by communition serial
Arduino Nano not uploading data to Nextion Display
Millis() not delaying
00 scale turntable project
Read SD file into an Array
Unintentional delay with Arduino
HardwareSerial Problem with ESP8266
New User MQTT help
Xvalue not declared in scope
Stop file from looping
Arduino as FM receiver
How would I program this?
Fingerprint not detected
How do i print this string and float value
MCP4725 sinewave generator
I need help with my if statement
Looking for someone to write a simple program
Script only runs if it is connected with the computer
2.4" TFT LCD TOUCH SHIELD inverted
Conditionals in main function do not detect serial port value
Momentary Push Button - One Push for Entire Code
Bro, i got stuck with my code. can you solve this code to connecting to website
Need help controlling motor with arduino
Problems with serial input
2 HC-SR04 (1 as trigger 1 as echo)
HDQ comminication protocol - compile errors
Multiplexer issue
'uint8_t' does not name a type
Trying to segregate serial data and drive outputs
Fine tuning fan noise
8 Servos with Arduino Mega 2560 R3
Not receiving data to the app
Smoothing problem
RF communication problem betwwen ultrsonic and servo motor
Have a problem with control the speed of 2 stepper motor
Analog Reading for Temperature sensor Cumulative value
MIDI touch piano with two MPR121
Getting Interupt every time switch press
WS2812B Don't light more than 31 leds. Need help!
Percent timer by using arduino
Trying to display Serial Data on my LCD Screen
Re: creating alert when system crosses geofence
Pump Control with Mosfet
433mhz led control button
DC motor only runs when arduino is connected to pc
433mhz led control button
Can anyone change this code to use it as a class (preferly mostly private) couse there are some other codes into the code that uses these classes by calling them in swich case or if else
Can't get expected readings using PulseIn command
PIR sensor controlling servo always reading HIGH
NAOS (Arduino OS)
Serial Monitor and FDTI connection
Can't find zip library for 2.0.0-beta4
ESP 32 keeps restarting with AsyncWebServer
Hi friends plz i have problem with my relay i cant get any output from my arduino
Reading messages by Arduino received from SIM800L GSM Module
Simple solar tracker
HC-05 Bluetooth module - laggy transmition
Button LED and sound problem
Arduino calculator using adder and xor
TMRpcm not working (stops playing immediately)
Data request using GSM shield
Ldr sensor problem
ADS124S08 data reading problem
Connecting between two NRF24s
Port busy (fingerprint as608)
Need input please
I want to make a count down time that auto repeats
DS3231 Code - Clarification
RFID wrong code received over RS232
Calculating frequency through analog pin
Adding readings of two load cell
7 segment clock multiplexer error
PROBLEM reading from serial monitor
Arduino UNO - increase motor speed (easy)
School project, SOLVED
How to properly insert delay() function
How to properly insert delay() function
If statement with time condition
SerialSoftware Problem
Nano 33 IoT I2C BLE
ESP32 touch pin to control relay
LCD "Shift" issue
Using a dc motor with a photoresistor
Send SMS once Arduino is triggered via a push sensor
NANO - Uploading forever
(Uno R3)Ultrasonic sensor& servo troubleshooting
LED Ultrasonic Sensor
Lcd printing 2 glitched letters
What is the best way to do this project?
How to programm a panic button
Weather station sketch crash after a few hours
Arduino Fingerprint Coding
Strobe Light Effect, HELP PLS!
Scotchy diode dead
SingleTact sensor
Why is variable "r" always one, even if i ground pin 3?
Hilfe brauche ein kurprogram abschnitt
Please Help! Programming or Wiring problem
How to stop repeat? basic questiom
Help with Stepper?
Looking for a two code fusion 1st for Relay 2nd for Servomotor Everything on a web page? need help I arrived at this result
External Interrupt speed for Nano 33 BLE
Starting and stopping 2 DC motors with limit switches
Can someone combine my coding for this Car lighting system
Nightlight LED not working
ERROR compiling for board generic ESP8266 (Arduino mega))
Multiple servo with multiple sensors
Secondary Clock ''СТРЕЛА" made in USSR
Multiple servo with multiple sensors
Nrf24l01 arduino doesnt work
Simple Nano-based music player using an sd card
I need help with my Arduino UNO!
[solved] tft screen with esp8266
Problema para instalar agente Arduino Create Agen
Show up text on a 8X8 LED matrix, character by character
Set but not used? Really?
28BYJ-48 stepper motor with ULN2003
Code for Multi turn Pot
Modbus TCP with W5100
Self Balancing Robot project- wheels only spin in one direction
Run Programme When Key Switch Enabled
Strange problem, after giving lcd.clear();
Help with code on board and blynk reporting
Reading multiple analogue inputs and printing values
Reading multiple analogue inputs and printing values
Arduino showing an error for some reason
Reading multiple analogue inputs and printing values
288YJ-48 Motor Continuously Spinning in a 2 Motor (Joystick Controlled) Setup
Using digipot to control water temperature
Mini Project Arduino Code help
I want to stop a moving servo with input from a micro switch
Using ultrasonic sensor to detect an object with a buzzer
In function 'void setup()': 66:14: error: expected primary-expression before ',' token
DHT Humidity and Temperature Sensor not working
OSOYOO smart home mega2560 help
TFT touch Screen+ Serial communication
Current or voltage control by PWM?
Multiple led's random on off
Ir sensor trouble
HELP Joystick Type Error
RGB LED controlled using IR Remote
SDI12 and LoRA librarys Problem
GC9A01 display using 8 bit Parallel on ESP32
Two programs in arfuino
Need help with my school project ASAP! expected primary-expression before ')' token
Need help with my school project ASAP! expected primary-expression before ')' token
Switch With Led
Best Sensor for Coin Sorter
Trying to Display Time using time.h
Serial Communication between Two Arduino Boards
Problem with tft 3.5 ili9844, There is no way to get the Bmp out
Basic OOK with the RFM69
Fan Speed AND DHT22 (temp/humidity)
Secondary Clock ''СТРЕЛА" made in USSR
Error: 'FastLED' does not name a type
Help - Problem with Green LED not staying lit
I have problem with project
Error when I upload
Help need for counter status
LCD Display Problem/Question
Lcd progressbar problem help plase
Confused about max amp on boards
Sketch upload error on arduino
Very simple Ultrasonic sensor and distance sensor
Stepper motor not turning correctly
Seven Segment Display Flickering
My code so I can have it evaluated? And maybe be guided
PIR Sensor analog value oscillation?
Help with blinking single LED
How can I create a Water Sensor Vibrator Device?
I made Arduino Korean word clock. Please help me
Program using a button timer
Sketch seems to be skipping data
Servo and MPU6050 IMU problems
Arduino MIDI device issue
Totaling all values of sensors
Problem in serial communication and i2c lcd display not working togeather
PPM Sensor result on LCD blinking
Serial commands from serial monitor queuing
Beginning Arduino/Circuits - Middle School Age Appropriate
L293D motor speed problem
How can I specify this task in if ? is this even possible?
External EEPROM Interfacing With Arduino Uno
Guys please please please help me ASAP
Strange problem with arduino code, upload success but not execute
Communicating two Arduino Nano using SoftwareSerial
Arduino based home intercom(USING WI FI ONLY)
Second value of Serial.println() is always 0
ESP8266 with PxMatrix for P6 RGB 32x32 Matrix
Water flow sensor connection to Uno Board with pull up resistor
Counter implementation on IR sensor
ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]_
Keyboard Code Error Arduino
Need help in EEPROM
I have a problem with pins
On/off button for code
How to stop music on DFPlayer mini
Help Error message!
Two or more data types in declaration of 'timeout'
MKR Wifi 1010 doesn't connect!
Problem sending string using I2C
Problem in Getting Stepper Motor to Rotate
Serial Prints Average Sensor Read
Elevator with 4 floors
SK6812 RGBW Jim Bumgardner hack
Sainsmart 5 inch display, Compile errors
Coding help? vfd to LCD or OLED
Serial communication problem with RS2428 relay module
Homework Help Section
Sketch not running
Arduino uno lcd 16x2 i2c and serial print stuck can't update read data sensor
Arduino Interface with node-red
How can print float to a TFT display
Saving values in array by pressing button
Can anyone help me to program a line follower based pick up and place robot
IR Reciver not working!
Buid a TV Lifter
Arduino - bluetootth
Force sensor with Arduino
How can print float to a TFT display
Code for rolling shade using Uno and Stepper
Can't get expected readings using PulseIn command
Please Help me In Debug this code
Question about Arduino Nano Every and Button, LED + Serial
Controlling modded servo continuous rotation
ESP8266 disconnected
RGB LED Beginner Tutorial & Random Colors Every 2 Seconds
Nono + momentary buttons + 2 relay module
Pass data From Arduino to PHP
Invalid conversion from 'const char* to 'char' [-fpermissive]
Shift register with millis possible?
Room to optimize code
Concatination of string
LCD display and Rotary encoder to measure distance
Three Phase Square Wave - An error occurred while uploading the sketch
Controlling a relay with a limit switch
LORAWAN device With RFM95 on Arduino Pro Mini
Using step motor for full and half step
LCD keep flicking
Initializing SD card...initialization failed error
Timeout Error (serial)
Df player mini, can any one help me
Three servos controlled by only one digital input
Servo keeps shaking
Multiple libaries were found for "SoftwareSerial.h"
Adafruit BMP388 Board Arduino Code Error
Adafruit BMP388 Board Arduino Code Error
L298n needs arduino to be connected to pc
Any solution for multiple input shear same pin?
Unbekannte Fehlermeldung beim Sketch
Please help I'm new
Yet another garbled monitor output
How to fix unstable analog output from A0 pin
Problem with code or compiler
Does State machine coding work on Nano
Arduino: 2 digit 7 segment display with temperature sensor
Need help with attachinterrupt, it affects other functions under void loop
Can anyone help with passing serial command from arduino Mega 2560 to M6e reader. I am getting connecting error
NRF24 not receiving. Help needed
Arduino uno midi system exclusive
Expected '}' at end of input Arduino Nano Elegoo
Arduino code MAX30100 and DS18B20 doesn't work
Optical Bubble Sensor BE-A 401 (Panasonic)
Controlling a servo with 5 wires
Arduino UNO Quadcopter Schematics
How to maintain original data using strchr
Strange behavior in communication with arduino and Tcl/Tk
Unable to compile for esp32 dev board module
Linear Encoder (suspension diagnostics)
Can't get LED to flash (like an indicator / blinker) in this sketch
Striped lines instead of cymbols on startup program
RPM sensing withot causing delay in sketch?
Arduino Nano V3 only runs sketch correctly after hitting reset or starting serial monitor
DC motor with L293D not spinning
Need help with a project (5v .2amp fan system)
Arduino Mega2560 dosen't proccessing routine command in loop when it send a data via serial port the delay about about 100ms per sending poreccess
Does anyone know the solution for this one? it is already closed so i didnt see the solution. Sadly I am having the same problem
3DTouch Auto Leveling Sensor
I cannot read text correctly through the serial port
Urgent help needed to fix the temperature sensor
How to use SWITCH?
RF433 and FastLed, problems with condition
Help, error: expected constructor, destructor, or type conversion before '(' token
Codigo para modulo relé doble canal
I want help serial communication between arduino and python
Simple keyboard string read won't work on Mega
Error compiling for board Arduino Nano 33 BLE : The paging file is too small for this operation to complete
ESP32 Dev, reading a register of an I2C-Device
High Resolution Gyro Question
VMA340 Pulse sensor false data
Combinations of relay having delay
Beginners seeking help
[CORB] Arduino + NodeMCU (ESP8266) Daten können nicht abgerufen werden
Expected { at end of input
Sincronizar hora de RTC DS3231 con arduino UNo
Problems with int errors
Differential steering with stepper motors
Need help when i was open the aurduino file the massage reflect "error could not create the sketch"
Arduino Nano and Visual Show Automation
CAN BUS not displaying all data
Lcd display A015AN02
Unable to send RAW IR code to an AC
Working with DGS spec sensors and Arduino Mega board
Arduino code won't compile seeking help
Arduino based Oscilliscope
Need help whit code for ir controlled step motor
Can't send data to ESP8266 via arduino
NRF24L01+PA not working
L293d with PC fan
Looking for someone who can help me troubleshoot a project.
DC Motor Control using Mosfet
Brushless motor and code
Sainsmart 5 inch display, Compile errors
Need help printing 6 digit value after decimal point
Logging sensor data from BMP280 and BNO055
ESP01 8266 not responsive
Led strip flickering
Crgbarray not meshing with crgb in declarations
Hex serial data receiving problem
Flux Capacitor inside a Track car
High signal detected although nothing is connected
Interrupt execution delay
Error 1 Error compiling for board Arduino Uno
Assign static IP and set host name
How do you make an LED increase in blinks based total number of times a button has been pressed
How to alter the value of a signal via poti?
How do I make my potentiometer increase the sound of the buzzer?
Arduino pro mini te362 and nRF24L01+
How write sd card cvs in the next column
360 spin photography
Tft display draw number in reverse digit
Dk d kql wlw,sl docerl ;dlka s;okoq p;ke asmd; lask;do asd
How to use sendSMS sketch?
Getting rtc time and using this info to label data in sd card
Controlling a stirrer with RS232
Mega 2560 wiring question
Problem with pot
Multiple sensor thermostat
Stepper misses steps on low speeds
Esp32 lora PCF8574ap
Data too long for SD to Read?
Comparing analog signals
How to get the best from this forum feedback and comments
Using 2 sensors advice
Troubleshooting dc motor motion control
Problem ESP8266
I don't know how to read an entire word in the serial
Adding Millis to program in youtube
Invalid conversion from 'int' to 'uint8_t* {aka unsigned char*}' [-fpermissive]
Disable hall effects sensor
Arduinos UNO, SENSORs, LEDs maybe POINTs
Math problem "invalid conversion"
iBUSTelemetry.h compile error for STM32
Is it possible to manipulate arrays like this?
I have trouble with Problem with hc-05 bluetooth connection(Not sending message out through phone app)
How to control a servo motor using a PID control with input from current sensor. I am not so proficient in arduino and in coding so can anyone please help me. I want to create a closed loop using pid for controlling servo with current sensor acs70331
Eeprom address loction
Arduino nano 33 iot profibus
Decimal to binary converter
Arduino Mega with 2004 Lcd Screen problem
Not loading to LCD
Problem with Arduino, load cell and LED display
Serial communication between tfmini plus and mrk gsm 1400 doesnt work
ledPin was not declared in this scope, unsure why?
"Error compiling for board Arduino UNO" message
Magnetic strip card reader project
How do i compare a string if it has been entered two time using input?
How do i compare a string if it has been entered two time using input?
Error compiling Esp32 Wrover Board
DC Current Measurement using Resistor Shunt and OP AMP
Bluetooth Controlled Car Problems
Programming bipolar motor to specific number of steps
Data sent api server with ethernet 400 bad requests
Hexadecimal value divided by 2
Comparing strings
Help me connect my flutter with the bluetooth
Library for LoRa communication in Arduino Nano 33 Iot, Ble, etc
Tx pins not working on my feather
Arduino Limit switch Interfacing Visual Basic .NET
One button library long press
Error compiling for digispark board (default- 16.5mhz
It's been so long I've fprgotten what T do
Printing from an array which is a class member
Using Arduino with RS 485 Angle Sensor
DFPlayer not working after multiples loops
BMP280 newby pressure relay
Powering 12v linear actuators with L9110s
Matlab Fuzzy Logic Conversion to Arduino done but confused
Troubles with if statements in for loops
My RFID doesn't work with Arduino Mega 2560
Insert switch to lcd clock
Pairing W2821B Led's into individual Sudo Pixels
How to avoid a if statement running again and again until another else if or else statement becomes true in void loop
Can you please guide me about analog joystick ? Is it possible to control the directions and speed of two motors just like an RC Car movements with one joystick (VRx, VRy )
Help, my teacher sucks. i need a code
HC-05 serial passthrough
1.8 tft 128*160 lcd error
Check Wifi Status - Problem
2 Button to 1 PWM output
(Beginner) Help with light display
SMS send but no receive.. the available() function takes forever
MPU6050 troubleshooting
How to decode binary coming from the neurosky module?
Trying to fix expected primary-expression before ')' token
How to collect time data and export it into a .CSV file without an RTC module
STM32 nucleo 64 with ST VL53L1X TOF sensor
Error while verifying a code into Arduino mega board
Passing char to a function
NodeMcu v3 only works on laptop usb
Control servo motor with blender
Animated christmas house
digitalRead not working or am i doing something wrong?
I2C crashes when used in an interrupt routine
How to control led brightness with one keyboard button
Four-load cells to be used with arduino (for balance device)
Simple LED code needed for ambient lighting
Making a Servo spin for set amount of time
Can't ping Arduino Mega with Ethernet 2 shield
Countdown timer 16x2 lcd
Project 09 Motorized Pinwheel - Motor spins continuously
DHT11 and esp 32
Error while verifying a code into Arduino mega board
Exit status 1 expected initializer before '.' token
Wifi esp8266 error when use adafruit_neopixel
ESP32 DEV with Potentiometer, NEMA 17 Stepper Motor and A4988 Motor Driver
Why on my esp 13 the access point doesn't appear?
I am trying to complete a program but I am new in this world if someone can help me with the code I will be so thankfull. Thanks
Help whit code for a little project
Can a multiplexer handle more than one type of input<control surface.h>
Hi, I'm currently doing my first project and I am facing an error which tells me that there is an error compiling for the board
Expected ')' before string constant
Temperature on LCD doesn't update
Why am i getting this error : Error /304
Oled show temperature instead of menu with temperature and Rtc
Hardware spreadsheet help
Error Compiling on Arduino Uno
ESP32 Hall Effect Sensor Not Working
Arduino + NodeMCU ---- Publishing Data on the Cloud
Serial.Print Matrix 8x8
Arduino + Supercollider
Dynamixel servo library wont even compile examples
Can you help me for my program and explain me
SD-WIFI with Card-Reader Module run ESP web Dev Onboard
Facing some problem declaring interrupts
Linking To Calibration Tool in W10
Automatic watering system with LCD Display
Seperate a value in arduino
FSR sensor comparison data in using Arduino Array
Elegoo UNO R3 Board
Reading data from joystick through bluetooth HC-05 module
In function 'void loop()': 17:6: error: expected ';' before 'digitalWrite' 23:5: error: expected ';' before 'digitalWrite' exit status 1
Project 6 - Tone Not Declared in This Scope
One out of two servo motors will not run
HD44780 not displaying anything?
Compile fails on Linux/ChromeOS
How to clear a text before a new text is placed in some spot
Self Balancing Robot Help
Mega 2650 solar tracker LDR Relay
LiquidCrystal_i2c greater than i3
Setting Arduino R3 as primary and communicate with ESP32 Dev Board
I cant connect AHT20 temp&humd sensor to adafruit io
Libraries not Getting included
Footage Counter on a Sewer Camera
ESP32 Using placeholders in HTML on SD Card
FSR sensor comparison data in using Arduino Array
Duplicated case value
Anyone have code for entering multiple passwords with an ir remote to open a lock
Issue in converting the Pixels values to image
How to get the best out of this forum
I can not find how to fix my code
How to get the best out of this forum
Help, running 2 if statement on 1 click
Uno's digital Pins are not working
How to Serial Communication
Gardenpump problem - problem solved! Sorry - logic mistake: need to use long int or unsigned int
Problem with looping led blinking script
DF mini player integrating with arduino uno
IR receiver won’t work with nano
Stepper motor, encoder and zero angle
Client fail to receive server message
DS2413 1-Wire 2 GPIO drive relay
Seven segment LED for cathode
Seven segment LED for cathode
I have a problem with programming tilt sensor
2 Ultrasonic Code with if
Relay does not switch off although Arduino sends the signal
How to control pump relais via mqtt and sensor data
Help with program, can't figure it out!
Interrupt on nano and detach
The data loss of SPI on DUE board
Servo motor won't work right
Problem with Serial.print frozen my sketch
7 Segment Display not working right
How to store data and call it out anytime
Relay resets the atmega328p
Pause code while keypad value not given
Expected ',' or ';' before 'LiquidCrystal'
The system is getting stuck after a while
Error Compilling Screen tft LCD 2.8 + Sensor
My LED strip doesn't want to light up
10 button controls
NRF24 and arduino 2560
Raspbian+arduino 1.8.13+nano don't work
Expected’,‘or’,‘before long’ error
Arduino server stops responding after a while
Arduino mega to esp8266 communication via TX RX
Cd player controller
Programming errors using arduino IDE
Does a input need to be pulldown
Capteur de distance bouton actif ou inactif
Is Arduino UNO going bad?
7A/160W motor driver module
Does anyone know what's wrong?
Assigning binary values to ranges?
Help with Intern RTC | ESP32
I need code help for my servo motor
SD Library Works. SDFat library does not
'microsecondsToCentimeters' was not declared in this scope
Servo control on ESP32 S2
Using 2 linear actuator with 4 limit switches
Temp sensor how accurate
Best way to connect Photodiode to get Boolean result?
Will anyone code for cash?
Need 25 Pin as out put 2 pins for sensor & 23 for Relays
Arduino Losing Serial Connection
Using Second Serial Port on Arduino Uno
Code help required
SSD1306 display troubleshoot
How can I invert my sensors for my zumo bot?
Fastest, Simplest, and Easiest Hall Effect Tachometer
Keyboard Instrument with Song Detection
For loop running twice
I2C Wire library clobbering my switch statement
Arduino 2 button calculator
Com port change with Nano 33 BLE Sense
Trying to make a series of Arduino leds with one pin
Guitar Envelope Follower Help
Dht11 sensor and servo motor
Set Timer for automatic pet feeder
SoftwareSerial Bug?
Sum and casting suggest
SoftwareSerial Bug?
L led, and TX, RX lamps resetting void Loop
ESP32-Cam. It takes photo data even if the camera pins are out
Use of Adafruit_SH1106 library cause fatal error: avr/pgmspace.h: No such file or directory compilation terminated
I need some help making a disco ball
Servos motors with Arduino
Acceleration and button
Program the arduino uno to control the speed in one direction of just one motor, using a remote trigger and bridge h BTS7960B
Millis() is wayy off
Saving two things to sd
Servo position hold while operating with Joystick
Human following car using L293d motor shield
Human following car using L293d motor shield
How to add a countdown timer with pause feature?
MPU6050 - Quaternion
IR Remote and Loop Codes
Gyro sensor and 50m Hi-AT laser module for conditional measurement
Project: gas-sensor comparision
How can I turn off my buzzer esp32?
Set Timer for automatic pet feeder
(VISUINO)-ConstantProperty' is not a member of 'Mitov'
Ds18b20 2 wires
The return value of millis () is incorrect
Converting from byte to integer in arduino
Problem with analogRead
Dolla Tek DS3231
Manual override
Need help with my code ASAP
Error esp32 upload CAN ANYONE HELP
Nano - Nextion - Stepper
HX711 Torque sensor
Line follower robot with obstacle detection
Line follower robot with obstacle detection
Controlling H-bridge via bluetooth input
Please my code is not uploading to the board
Pls i need help for this error
Help with counter and led light
Displays LCD but nothing logged on SD card
Please read. Encoder sensor
I need some help with my sensors
'class HMC5883L' has no member named 'begin'
Definition and Use of the Command WiFI.mode
Adafruit_SSD1306.h library is not recognized
Neo 6 m in Node mcu
Rs485 and arduino mini pro
Problem making a global variable for 2 functions local varible
Arduino UNO driver not working / Help to figure out it's label
Code can run on tinkercad but not in arduino board
Problem in running two sensor in arduino
Flash radiotherapy project (aka cancer treatment)
Arduino water pump controller
Firebase stops working
Need help learning how to create a function with x inputs and returns a y value
Error esp32 upload CAN ANYONE HELP
My Ciphertext is not showing #esp32
Script tag not working with Arduino and ESP8266
An error occurred while uploading sketch
Header file error
Arduino steering wheel help
New to coding on Arduino
Zwei verschiedene Frequenzen abwechselnd erzeugen
Arduino Nano Output pins are not working
Problem with two loops
Errors compiling for Arduino Uno. Is my code faulty?
Change a value from json
Good Rotary Encoder code
Restar for each pulse
Obstacle avoidance robot wheel not working
ATtiny85 + bitmap + OLED
Stepper Powered Tank - Please Help
Gps tracking system by sms
I'm new. Please help me with this coding
Convert serial printed time format to hours and minutes separate
Error compilación placa arduino uno (SOLUCIONADO)
How to replace the pin 2 in arduino uno
Parking lot project
Code Request - 3 100k NTC Data Logging - Teensy LC
About Theatre Chase effect on LED strip with WS2812b
Looking for Advice on my project setup!
Issues Controlling LED Using Serial Reading of Potentiometer
Problems with program freezing
Help with figuring out power supply required!
Gps travking system
Cording error i don't know how to fix this ...someone can help me?
Basic Arduino GPS with LCD
How can i save some storage ? 104% is used and i dont know what to do better :(
Esp32 code compiling error
Esp32 code compiling error
Esp32 code compiling error
Uneven blinking rate of LED without delay() without millis() overflow
Arduino mega as LED controller?
Can't load sketch to ESP8266-12E
Can't find MPU6050 connected to TCA9548A multiplexer
Need Help Wiring Neopixel to Arduino Uno
Need help my code dost work properly
Separating incoming string through 433 MHZ receiver
Please help, i can't figure out what's wrong with my code [solved]
Automatically water, soap, hand sanitizer and hand dryer problems
My button is reading from pins that are not declared
How do I send a number from NRF24L01 TX to RX
So many error while compiling I dont know where to start
How to turn "off" or black specific pixels on a LED string?
Message return function
Help suddenly cant upload grbl to my arduino boards
If someone can help me i will be thankful
Coding with 2 sensors and 2 actuators
Robot-Car Projekt mit einem Arduino UNO smd
How do I declare for "sendCommand" and "getData"
How do I declare for "sendCommand" and "getData"
CAN-BUS Shield interface with 7 segment display
The merits of delay() vs millis()
Problem with ds1307 rtc
Serial communication NodeMcu&Atmega
How to turn "off" or black specific pixels on a LED string?
Problem with TFT screen while compiling
Arduino becomes unresponsive after sometime of operation
Need help my code dost work properly
How do you operate the buzzer with the desired motion after machine learning?
Having trouble adding 1 to a variable and making lights correspond to those values
Project hardware
Tds meter not working
D13 triggers when powering up (simon says)
Сompile code error: “undefined Reference to `Num::getNum()`
FastLED and WS2812
FastLED and WS2812
Sending sensor data to cloud server using Arduino Uno and ESP8266
FastLED July 4th Red/White/Blue Scrolling Help - Why is this code not working?
Max Leds control arduino nano
Making esp32 working with ILI9488
Arduino act strange as I pull the cable out
High Current Measuring with ACS712 and Buzzer Module
Serial is printing character by character
TFT lcd blank screen
Coding in arduino ide
Linear Actuator is not working with BTS7960
Sparkfun esp8266 wifi shield not working
Vivarium controller
Arduino code for pin i/o over BLE
</>(Uno R3) I'm trying to set up a temperature sensor and an LCD screen to display the temp. Can anybody Help?
How the heck does this work (the Crudest possible way of switching a relay with ESP 01s works!)
Help fix my code PLEASE
Modifying existing Sketch to trigger PIN 13 LED at set point
Arduino Nano Füllstandsensor
Exit status 1 'Mix' cannot be used as a function
How to measure voltage of battery using ESP32 internal reference voltage?
Problem with printing out a random number
RC signal to trigger sounds on DFplayerMini using SparkFun ProMicro
Error compiling for board NondeMCU 1.0 (ESP-12E Module) related to firebase
Verification error, first mismatch at byte 0x0000
DHT11 if else statements not working
DHT11 if else statements not working
Magnetic hall sensors
Arduino Chessboard
Relay module error
Arduino Duemilanove Stk500_recv and the reset button doesn't work
Read SD file into an Array
Controlling a Stepper Motor Using a Photoresistor
Error: expected primary-expression before '<=' token
Read values from a 3,5mm jack
Here is my Dragonframe CNC Shield V3 Moco Solution & code!
UTFT few display connection
HP4067 Mux convert Serial to DigitalRead me
Using limit switch
Level and quality of forum posts
Arduino Parola strolling text font
Need Help with programming this code
Boas precisava de ajuda porque quero enviar os dados de 4 sensores ultrassom por comunicação serial
Modification of a timelapse program
How to add x1 and x2 button mouse logitech leonardo + usb shield
How to convert this function to int, is function String?
Arduino pro mini timing seems to be off
Im struggling with a delay bug in my code/project
Momentary Halo Switch Circuit - Will this work?
DragonFrame Motor Only going one way
Shaking servos on robotic marionette
8 Channel millisecond timed based relays?
Serial Communication garbage while reading a char
Use Rfm9x without antenna?
Stepper Motor will not go through a full rotation
Control_Surface.h Library display CC Values in Oled
Pausing code after my if statement
Library of the code
Arduino Ev ery and Library DS3231_Simple
PROBLEM reading from serial monitor
How to make "Hello World" on Oled 128x64 SPI
Mega/Motor Shield Power Problem
Stepper Motor loosing steps
Esp32-(xQueueGenericReceive)- assert failed
Trying to determine if my NANO 33BLE is stationary at any time for a designated time frame
3 square wave generater
School project, automatic closed box solar system
5V or 12V Relay Module, 12V Water pump, Project Help!
Serial command and carriage return
5202 Motor Speed with RC Control
Arduino IDE code uploading errors
ATtiny 13a issues
HC05 - ZS-040 board Firmware v1.0.2
Not declared in this scope, sound!
(Uno R3)Ultrasonic sensor& servo troubleshooting
Controlling Several LED methods via Bluetooth
Using Uno to control a 5V non addressable led strip
RS232 to TTL conversion last bit error
Multiple Thermocouples on nano
SOS - GPRS String Getting Truncated
For loop only runs once
UBLOX Neo-6M GPS Module not working / not powering on
Serial.println only printing out 0's
SD Card can't save new Pictures
Stepper Motor turns once when powering up Arduino Mega
Serial communication (arduino to nodemcu) and max30100 problem
Generating a waveform with two frequencies
Is my RTC ds3231 dead
Program Files (x86)\Arduino\arduino-builder returned 2 Error compiling for board Arduino Nano 33 BLE
Arduino Not Lighting Up LED
Soil moisture combined with Temperature sensor (BME 280)
Hello I am doing a project but it gives an error
ESP32s2 I2C Scanner not working
6 LEDs have to blink, after a button is pushed, but not held
Vane anemometer from ruoshoi digital anemometer
I need help with project
Triggering events with multiple sensors
Problem while compling a WS2811 LED with ESP32
Serial Monitor Not printing with ESP-01
Counting the number of distances measured in one minute
"For" statement runs twice in ISR
Arduino potentiometer replacement
Homework Help Section
Arduino, ESP32 , PS4 controller
Differing voltages on pin D7 and D8D6D5
I2C protocol + Serial comminication
Two stepper motor
COM port not being read
Having trouble sending and reading 2 bytes from Serial Port
Digital Relay Box
Can't use digital.Write in void correctly. ''digital was not declared''
Arduino Mega 2560, and Modbus Slave RTU Library
Everything in this code works great except for the stepper motor which just vibrates a little but doesn't spin
Programming Error: expected primary-expression before token
HC-05 Bluetooth module not working correctly (with videos)
Arduino snap rover
Aruino UnO connected to SM sensor
Arduino Mega 2560, and Modbus Slave RTU Library
Coding error at void set up
I need some urgent coding/circuit guidance for my project!
Expected primary-expression before 'void' please help
Nodemcu with rs485
Wemos D1 mini upload failure
Not declared in scope how can I solve this problem
How to display both value of adc on excel
Hello I am doing a project but it gives an error
Terminate Return()
Looking for easy VR3 for relay shield code help
Arduino with PC sync problems
Decode data stream from serial
Why do I get these errors?
I have problem with project
RGB LED controlled using IR Remote
Exit status 1 Error compiling for board Arduino Nano
Problem with demultiplexing and multiplexing
Binary not received by board (MKR1010)
Hello, I like some help about this code. I´m having trouble running - It´s for building a Magnetometer. I´m new in arduino programing
Read sensor connected to USB port via Arduino
Ethernet_shield not continously working
Set up sample rate of arduino
Possible nRF24L01 code Issues on a RC Car
How can I duplicate the 5V and GND pins on the Arduino nano board?
Set up sample rate of arduino
Bearssl/bearssl_hmac.h: No such file or directory
Variable voltage controller w current sensing
Comparing two output
Problem whit this code pls help
Alternative definitions for analog pins
Duplicated Row on RGB Matrix 64x32
DNC Via Arduino Serial
How to make multiple menu on oled display wth esp32 and button
I need help for programming three voltage sensors
Nrf24l01 receiving random data
How to get the best from this forum feedback and comments
Comunication with module sim800l
Issues with NRFL24L01+ modules on project
Buttonbox not compiling
How useful is an Arduino Sensor Shield?
programming different sensors
Serial comms, Micro > Micro Pro
Read Duty Cycle and Drive Leds
Payload: Arduino - The Things Network (Arduino MKR WAN 1310)
External Pin Change Interrupt not working Instantly
Error compiling LowLatencyLogger
Communication speed of NRF24L01
On/off button for code
Adafruit VL53L0X high accuracy with Adafruit_VL53L0X libray
Help Error message!
SIM900A and Float Switch
How to display Full text in LCD with i2c board
Multiple leds on ONE PWM pin
Sistema de modulo para bico injetor
IR Remote button Push "ON" release "OFF"
Inconsistent behavior
HC-05 Master slave latency
Linear Voltage Increase
Controlling 0-5.7v signal dc motor
Help with arduino code!
Water boiler controller help needed
Why is this code not reporting the error more quickly?
How many ADC Pins Portenta H7?
Breadboard Voltage Input/Output
Arduino Grbl has not finished uploading. Getting error
ADXL 345 SPI: Receiving zeroes as output data
Arduino - bluetootth
Arduino - bluetootth
Clear interrupt flag using software
Solar Powered tracker
Using shift register for serial input
COM port not being read
My ESP crashes running my code and restarts itself
Can't get expected readings using PulseIn command
iRobot create movement with arduino
Df player mini, can any one help me
FSR voltage steadily increasing
Selfbalancing robot doesn't react fast enough when falling
Concatination of string
Drehimpulsgeber / BIN Ausbabe - Fehler beim Abwärtz Zählen
Help with making a competition buzzer box
Controlling servo direction using one push button
Issues with 12v and 12v relay to power a pump
nRF24L01+ Transmission failed or timed out
Timeout Error (serial)
A too long array?
Multiple Dallas onewire busses on a Arduino
Random specific colors for NeoPixel
Void Setup error
Help please w.r.t <Do - While> instruction
GPIO Pins Layout In ESP8266 Motor Shield
Windows 7 fails to install drivers - not even listed in Device Manager
How I can read Serial monitor on a device
Pin-Configuration of the ECG-Chip AD8232
How to control multiple LEDs with 74HC595 shift register using millis()
Random specific colors for NeoPixel
Programming push button to start timed Servo Sweep
Error " 'lcd' was not declared in this scope "
FastLED Parallel Output (Same Data Different Pins)
Using 2 arduinos and TMP36 to send message
Moving from a USB cable to bluetooth
How to maintain original data using strchr
Condition not fulfilled yet it execute
Unable to compile for esp32 dev board module
While function not repeatedly checking state
Bluetooth Module not working?
Ttgo lora32 v2 and ds18b20 temp sensor
Accelstepper: Speed control
Need pointer to RF reciever control of Relay
Copy to clipboard in a captive portal
Ouput current dropping down
HC-SR04 ultrasonic sensor motion detection
Pressure sensor LCD I2C problem
ESP32 as iBeacon
I can't compile my program
Pushbutton Not Activating a Certain Function In My Code
Limit switch with Nema 17 and A4988
SIM800L prints strange characters ot HTTPPARA="URL"
I want to take data from one device using usb and send to pc . which arduino board I should prefer?
Mpu6050 and Servo
Strange behavior in communication with arduino and Tcl/Tk
Problems with int errors
Final touch the project
Arduino get function pass var from sensor reading
Generating varying frequencies on pin PA21 for ATSAMD21G18AU
Blinking L LED (No Blink example) [solved]
Code Not working for OLED with arduino Nano
To amplify milliVolts (say 10-100 mV) data into 0-5 Volts using Arduino UNO
When I use the same code how2electronics provides for the NPK sensor, the Max485/Modbus to TTL converter we're using returns only FFFFFF
Compile error with Razor9dof package
IR receiver cant decode continuous signal from transmitter
Send live location using a push button on emergency number
What Causes the Torque Sensor to Have Unstable Output Signals?
Conversion from 'const char*' to 'char'
SOLVED! Serial print works on IDE, but data gets changed when read by Python (Raspberry Pi Serial via USB)
Latching Footswitch to MIDI Converter
Pushbutton trigger for advancing Neopixel animations?
Smoothening flow sensor output
Ardino uno error uploding
Move Redrex Stepper Motor using Accel
Arduino UNO + HC05 => weird data transfer
Arduino UNO + HC05 => weird data transfer
Array passing problem
Very simple Ultrasonic sensor and distance sensor
NO OUTPUT for a proposed project
Running sub-loops causes software to lock up over time
Sainsmart 5 inch display, Compile errors
Interrupt execution delay
Coding in Home Position for DC Motor
Code corruption? Thoughts?
Simple ultrasonic sensor
analogRead multiple value Problem
My code isnt working?
Why is each y position pos * 9 + 1
Arduino - Bluetooth - Programming problem
How to get the best from this forum feedback and comments
Problem displaying variables on lcd screen
Convert code RHT03 to DHT11 ESP8266
I2C 20X4 2004 displays 2 lines with blocks only
Conflito entre macro e LiquidCrystal_I2C lcd
Error compiling for board ESP32 Dev Module
Press a button and move the joystick
Exit status 1 Error compiling for board Arduino Mega or Mega 2560
Exit status 1 Error compiling for board Arduino Mega or Mega 2560
Repost: Serial Monitor Showing Strange Values
Expected primary-Expression before 'sonic'
Exit status 1 Error compiling for board Arduino Nano
Błąd kompilacji dla płytki Generic ESP8266 Module.
Błąd kompilacji dla płytki Generic ESP8266 Module.
4 button's 4 leds debounce
WL_IDLE_STATUS' was not declared in this scope, How to Fix?
Knight rider PWM
Help on using FC 51 module
Trouble on working with shift register 74HC595N
Hae . am having trouble ending the while loop, when the sensor value reaches threashold the lcd displays fire alarm but when the value is less than threshold the lcd still display the same text
Code given error
Code given error
Arduino UART with esp01
Compilation questions
4 digit binary counter skipping
How to use SDI-12 in MKR WIFI 1010
How do I make the timer remember the time that was placed on it, without having to enter the same time every time
3DTouch Auto Leveling Sensor
ESP32 - DRV8825 Stepper Driver - NEMA17 - BLE Problems
SPI function calling error for Arduino Leonardo
Auto-Closing of topics?
Nano BLE Bootloader Crash?
JawDuino Error SoftRcPulseOut' does not name a type
Power for servo motor?
Reading & comparing multiple digital inputs
Help my code is not doing what I told it to do (ACNH auto nook mile collector)
Help value EEPROM lost after reboot
IoT Cloud and pictures
Problem with a wemos R1 D2 Board
Serial string sum comparison
Yip another noob,trouble with error compiling for board esp32
Arduino with nextion display
Trouble with reverse steper motor
Using Switch in a If if condition
Can I increase the resistance of my linear potentiometer?
DS3231 Read Time Error
Heating Elements via Mosfet + NPN-Transistor
How to measure power in PID controlled circuit
Generalised posting explaining how to change from a LLT-writing style to a productive style
Hi! I have problem with this code.May someone help me!Thank You!
Connecting with HC-05 using SoftwareSerial
Is it possible to Instantiate more than one object of the same hardware? (OLED SSD1306)
Multiple cards on one RC522
Analog read and data upload
Stepper motor+hall sensor+arduino
Help with millis() command
Different results with same board and code
Error in code using Arduino IDE for reading RFID tag and sending data to SQL
Want to help someone who is code illiterate?
Arduino / Python
Control led brightness using ir remote volume buttons
Can communication with can spi module
Loop ( How I fix it to remember button than when >= $2.50 it then spins motor
Please Help me this function doesn't fire from the periperical?
Controllig car led's with pwm
Need help with ping sensor activating
Arduino UNO R3 using two outputs dependent to different inputs print unreadable after include delay()
M5STACK Serial monitor
Attaching a servo affects pulseIn readings
I cant receive data from BQ76PL455
Controlling Servo Motor with Arduino and PIR Sensor