Use IR remote with arduino

Question

I would like to use the IR remote with Arduino to turn on a LED and turn off the same LED when I push on the remote.

That is to say :

• If I push on 1 I would like the LED turn on
• If I push on 2 I would like the LED turn off

Here is my code :

#include <IRremote.h>

const int RECV_PIN = 7;
IRrecv irrecv(RECV_PIN);
decode_results results;

const int L1 = 13;

void setup(){
  Serial.begin(9600);
  irrecv.enableIRIn();
  irrecv.blink13(true);
  pinMode(L1, OUTPUT);
}

void loop(){
  if (irrecv.decode(&results)){
        unsigned int value = results.value;
        Serial.println(value);
        irrecv.resume();
        if(value == 12495){
        digitalWrite(L1, HIGH);
        delay(1000);
        } 
        else if(value == 6375){
        digitalWrite(L1, LOW);
        delay(1000);  
      }

  }
}

But the problem is when I push on 1 I just see the LED turn on but very quickly the LED turns off then whereas I don't push on the button 2.

Could you help me please?

Answer 1

This line of your sketch irrecv.blink13(true); tells the IRrecv object to flash the LED on and off when an IR signal is received. boarddefs.h in the IRremote folder has pin number 13 defined as the default BLINKLED. The code you have written in loop() is trying to do something different with the same LED. I would remove this line irrecv.blink13(true); then try your sketch again. Once the LED is working correctly, try removing both of these lines delay(1000);.