Hey everyone, I am having a problem with my IR transmitter.
Firstly, I am working on an IR remote control project to turn on some LED strips whenever the surrounding light is below a certain brightness. For this project I am going to use an IR reciever, transmitter, arduino Uno, 100 ohm resistor and a photo resistor. I am currently at the phase where the transmitter has to send out the "turn on code" to the LED strips (this code was collected from the strips remote control, using the receiver).
I know my IR Led is working because if I switch from pin 3 to the 5v pin (with the resistor connected) I can see the light using my phone, but when I connect it to pin 3 it does not flash when the code is sent. Another way I can identify if a code is sent is with the IR receiver, but it also does not receive any signal (it has a red led that flashes when it receives a signal, model:1838)
This is the code below (so far I am just trying to get the transmitter to send the signal)
I'm fairly new and was having trouble finding an answer on this specific question. If you know anything that can help me I would greatly appreciate it.
Sorry, I'm not sure I understand. How would I go about fixing the wavelength. As for the LED, I don't remember the technical ID so I don't know how I can check its data sheet.
Also, shouldn't the LED blink regardless? Sorry, I'm just getting into more advanced projects so I'm still a beginner
The wavelength is fixed at the factory based on chemistry and geometry.
Yes, the LED blinks. But at 38000 times per second. Your IR receiver is expecting that.
Paul
Try getting your sender much closer to the receiver. Remote controls typically use a high-power IR LED (sometimes more than one). The Arduino might not be able to drive it hard enough without a transistor amplifier. If it works when very close you can try a transistor.
How did you determine that 0xFEA857 was the right code?
I tried getting the transmitter closer to the receiver, but there is still no response (even when touching). I got that code from a tutorial. For my project the actual code is 0xFF02FD, but since I wasn't getting any response I decided to use the code from the YouTube tutorial (just to see if the IR led would blink).
I actually did this project some time ago, but that was very long ago (with the same set up) so I don't know why the LED won't blink (while looking through phone camera or checking with the receiver)
I guess that would be good, but I would at least like to know why this project isn't working. What if I encounter a similar problem with this module? I also have multiple IR LEDs so I don't think they are burnt or anything (I could verify with my phone camera by connecting the LEDs to 5v).
Okay I have taken better pictures, and I have also replaced the IR LED with a regular LED (I checked to make sure it is working). There is no flickering of the LED.
The polarity is correct for this setup. I briefly placed the yellow wire on the 5v pin and the led lit up
I tried running the code again and I noticed this is written before the code is uploaded
C:\Users\jake1\Documents\Arduino\IRsend\IRsend.ino: In function 'void loop()':
C:\Users\jake1\Documents\Arduino\IRsend\IRsend.ino:15:30: warning: 'void IRsend::sendNEC(uint32_t, uint8_t)' is deprecated: This old function sends MSB first! Please use sendNEC(aAddress, aCommand, aNumberOfRepeats). [-Wdeprecated-declarations]
irsend.sendNEC(0xFF02FD, 32); //Power Code
^
In file included from C:\Users\jake1\Documents\Arduino\libraries\IRremote\src/IRremote.h:182:0,
from C:\Users\jake1\Documents\Arduino\IRsend\IRsend.ino:2:
C:\Users\jake1\Documents\Arduino\libraries\IRremote\src/IRremoteInt.h:485:10: note: declared here
void sendNEC(uint32_t aRawData,
^~~~~~~
Your system consists of 2 parts, a transmitter and a receiver. Both parts have to match for a successful communication. You’ve shown mainly the transmitter. Incidentally, which version of the IR library are you using?
Also the receiver part. Is this also an Arduino? If so, which version of the IR library are you using there? Have you any other way of verifying if the receiver is OK? For example a remote control.
No need for ANY light transmission from the Arduino for this module (#6) to work as it works off ambient light.
That was, I thought, your original requirement.
I was able to fix the problem. Thanks for all the help.
The problem was with the code and after some searching the code below is what got me the results I was looking for.( The IR led transmits the code)
/*
* SimpleSender.cpp
*
* Demonstrates sending IR codes in standard format with address and command
* An extended example for sending can be found as SendDemo.
*
* Copyright (C) 2020-2021 Armin Joachimsmeyer
* armin.joachimsmeyer@gmail.com
*
* This file is part of Arduino-IRremote https://github.com/Arduino-IRremote/Arduino-IRremote.
*
* MIT License
*/
#include <Arduino.h>
/*
* Define macros for input and output pin etc.
*/
#include "PinDefinitionsAndMore.h"
//#define SEND_PWM_BY_TIMER
//#define USE_NO_SEND_PWM
#include <IRremote.h>
IRsend irsend;
int i = 0;
void setup() {
pinMode(LED_BUILTIN, OUTPUT);
Serial.begin(115200);
// Just to know which program is running on my Arduino
Serial.println(F("START " __FILE__ " from " __DATE__ "\r\nUsing library version " VERSION_IRREMOTE));
/*
* The IR library setup. That's all!
*/
IrSender.begin(IR_SEND_PIN, ENABLE_LED_FEEDBACK); // Specify send pin and enable feedback LED at default feedback LED pin
Serial.print(F("Ready to send IR signals at pin "));
Serial.println(IR_SEND_PIN);
}
void loop() {
if (i == 0){
irsend.sendNEC(0xFF02FD, 32); // this turns on the led strip
i++;
}
else{
irsend.sendNEC(0xFF1AE5, 32); // this selects the colour red
}
}
i have the same problem. your code worked but 32bit data is not sending properly.
How can I send 32 bit data? and I can't receive the hex codes I sent. Helpp?
sender code: Arduino mega use. IR Sender sensor connection pin 3. #include <Arduino.h>
/*
Define macros for input and output pin etc.
*/ #include "PinDefinitionsAndMore.h"
#include <IRremote.h>
IRsend irsend;
int i = 0;
void setup() {
pinMode(LED_BUILTIN, OUTPUT);
Serial.begin(9600);
// Just to know which program is running on my Arduino
Serial.println(F("START " __FILE__ " from " __DATE__ "\r\nUsing library version " VERSION_IRREMOTE));
/*
* The IR library setup. That's all!
*/
IrSender.begin(IR_SEND_PIN, ENABLE_LED_FEEDBACK); // Specify send pin and enable feedback LED at default feedback LED pin
Serial.print(F("Ready to send IR signals at pin "));
Serial.println(IR_SEND_PIN);
//#define DECODE_NEC #include <IRremote.h>
int RECV_PIN=11;
int led=10;
IRrecv irrecv(RECV_PIN);
decode_results results;
void setup() {
// put your setup code here, to run once:
pinMode(led,OUTPUT);
Serial.begin(9600);
irrecv.enableIRIn();
}
void loop() {
// put your main code here, to run repeatedly:
if(irrecv.decode(&results)){
Serial.println(results.value,HEX);
Serial.println(results.value,BIN);
delay(100); //Serial.println(results.value);
Serial.println("******");
irrecv.resume();
}
/*
SimpleSender.cpp
Demonstrates sending IR codes in standard format with address and command
An extended example for sending can be found as SendDemo.
Copyright (C) 2020-2021 Armin Joachimsmeyer
armin.joachimsmeyer@gmail.com
This file is part of Arduino-IRremote https://github.com/Arduino-IRremote/Arduino-IRremote.
MIT License
*/
#include <Arduino.h>
/*
Define macros for input and output pin etc.
*/
#include "PinDefinitionsAndMore.h"
//#define SEND_PWM_BY_TIMER
//#define USE_NO_SEND_PWM
#include <IRremote.h>
IRsend irsend;
int i = 0;
void setup() {
pinMode(LED_BUILTIN, OUTPUT);
Serial.begin(9600);
// Just to know which program is running on my Arduino
Serial.println(F("START " __FILE__ " from " __DATE__ "\r\nUsing library version " VERSION_IRREMOTE));
/*
The IR library setup. That's all!
*/
IrSender.begin(IR_SEND_PIN, ENABLE_LED_FEEDBACK); // Specify send pin and enable feedback LED at default feedback LED pin
Serial.print(F("Ready to send IR signals at pin "));
Serial.println(IR_SEND_PIN);
}
void loop() {
if (i == 0) {
irsend.sendNEC(0xFFFFAF11, 32); // this turns on the led strip
delay(100);
i++;
}
else {
irsend.sendNEC(0x111111, 32); // this selects the colour red
delay(100);
}
}
receiver code:
//#define DECODE_NEC
#include <IRremote.h>
int RECV_PIN = 11;
int led = 10;
IRrecv irrecv(RECV_PIN);
decode_results results;
void setup() {
// put your setup code here, to run once:
pinMode(led, OUTPUT);
Serial.begin(9600);
irrecv.enableIRIn();
}
void loop() {
// put your main code here, to run repeatedly:
if (irrecv.decode(&results)) {
Serial.println(results.value, HEX);
Serial.println(results.value, BIN);
delay(100);
//Serial.println(results.value);
Serial.println("******");
irrecv.resume();
}
Get the Moderator to move your question to a new thread.
Try these sketches:
//Receiver
#include <IRremote.h>
const byte RECV_PIN = 11;
const byte led = 10;
IRrecv irrecv(RECV_PIN);
decode_results results;
//*******************************************************
void setup()
{
Serial.begin(9600);
pinMode(led, OUTPUT);
irrecv.enableIRIn();
} //END of setup()
//*******************************************************
void loop()
{
if (irrecv.decode(&results))
{
Serial.println(results.value, HEX);
Serial.println(results.value, BIN);
Serial.println();
//toggle the LED
digitalWrite(led, !digitalRead(led));
irrecv.resume();
}
} //END of loop()
//Sender
#include <Arduino.h>
#include <IRremote.h>
// resistor IR LED
//[UNO pin #3]----[220R]----[A->|-K]----GND
const byte led = 13;
IRsend irsend;
//*******************************************************
void setup()
{
pinMode(13, OUTPUT);
} //END of setup()
//*******************************************************
void loop()
{
irsend.sendNEC(0xFFFFAF11, 32); // this turns on the led strip
delay(1000);
//toggle the LED
digitalWrite(led, !digitalRead(led));
} //END of loop()
