I don't know why it doesn't work (i am new to this )

Projects Programming
1

hey there so i wanna set a timer to make it work for some time but i don't know why it doesn't work it seems to work for one time when i put "while(1){}" at the end of the if statement but i don't want it to work for one time then never opens again can anyone help? CODE:

#include <Arduino.h>
// put function declarations here:
int myFunction(int, int);
int input= 7 ;
int led= 12 ;
int inputstorage=0;
int time=5000000000;
void setup() {
// put your setup code here, to run once:
pinMode(6,OUTPUT);
pinMode(7,INPUT);
}
void loop() {
inputstorage=digitalRead(input);
if(inputstorage==true)
{

digitalWrite(led,true);
delay(400);
digitalWrite(led,false);

} else
{
digitalWrite(led,false);
inputstorage==true;

}

}
2
  • Do you know what the largest number you can use with type int ?
  • digitalRead(input) this returns HIGH or LOW
  • digitalWrite(led,true); use HIGH or LOW

FYI

SwitchesAndLEDs
SwitchesAndLEDs1224×1108 280 KB

3

1. You should use code tags (<>)to post your sketch in the following format:

#include <Arduino.h>
// put function declarations here:
int myFunction(int, int);
int input = 7 ;
int led = 12 ;
int inputstorage = 0;
int time = 5000000000;

void setup()
{
  // put your setup code here, to run once:
  pinMode(6, OUTPUT);
  pinMode(7, INPUT);
}

void loop()
{
  inputstorage = digitalRead(input);
  if (inputstorage == true)
  {
    digitalWrite(led, true);
    delay(400);
    digitalWrite(led, false);
  }
  else
  {
    digitalWrite(led, false);
    inputstorage == true;
  }
}

2. I understand that you have a Push Button connected at DPin-7 with an external pull-down resistor and a LED at DPin-12 (Fig-1). Your sketch of Step-1 does not match with Fig-1.

sw1led1PullDownRes
Figure-1:

3. Do you want that when the Button is pressed, LED will turn On and remain On for 5-sec (for example) and then goes Off?

4

sorry i am new to this also yes replying to your 3rd 1. question

5

yeah i was just messing around with the number limt i knew they wont work

6

i also use a simulator because i don't want to burn anything with my real board here is the picture of it it might be confusing

image
image754×743 45.2 KB

because i dont know how to colour code it

7

nvm got it colored

image
image743×791 55.1 KB

8

1. Be sure that your hardware setup agrees with Fig-1 of post #5.
2. Upload the following sketch (your one with some modification).

int input = 7 ;
int led = 12 ;
int inputstorage = 0;
unsigned int time = 5000;   //5000 ms = 5-sec

void setup()
{
  // put your setup code here, to run once:
  pinMode(led, OUTPUT);
  pinMode(input, INPUT);
  digitalWrite(led, LOW);
}

void loop()
{
  inputstorage = digitalRead(input);
  if (inputstorage == HIGH)
  {
    digitalWrite(led, HIGH);
    delay(time);
    digitalWrite(led, LOW);
  }
}

3. Gently, press the Button.
4. Check that LED is On or 5-sec.
5. Check that LED has gone Off.
6. Repeat the process.

9

it works thank you so much

10

You can now use this working project as a Building Block to build many more simple to complex projects as the desire arises in your mind.

The attached file may worth reading and practicing.
Ch-4DIOLec.pdf (657.1 KB)

11

thanks