IR Reciever - Need help

Projects Programming
1

I recently ordered an IR receiver and got it today. But when I had uploaded this sketch to it the led I was controlling with a remote control would just blink...

Is there something wrong with the sketch or is it the receiver or the led?

Here's the sketch.

#include <IRremote.h>

int RECV_PIN = 18;
int state = 0;
IRrecv irrecv(RECV_PIN);
int led = 17;
decode_results results;

void setup()
{
  Serial.begin(9600);
  irrecv.enableIRIn(); // Start the receiver
  pinMode(led, OUTPUT);
}

void loop() {
  if (irrecv.decode(&results)) {
    Serial.println(results.value, HEX);
    irrecv.resume(); // Receive the next value
  }
  delay(100);
  if (results.value == 0xE0E036C9) { //Button is pressed
    if (state == 0) {
      digitalWrite(led, HIGH);
      state = 1;
    } else {
      digitalWrite(led, LOW);
      state = 0;
    }
  }
}
2

Hi SMM2,

Do you see the println outputs? Do they come out as fast as the LED blinks?

Also, does the HEX value match the "button pressed" value?

3

Once you receive 0xE0E036C9 the LED will blink until you receive something else. If you press a different button does the LED stop blinking?

If you want the LED to change state only when you receive another 0xE0E036C9 you would put the second half of loop():

  if (results.value == 0xE0E036C9) { //Button is pressed
    if (state == 0) {
      digitalWrite(led, HIGH);
      state = 1;
    } else {
      digitalWrite(led, LOW);
      state = 0;
    }
  }

INSIDE the 'if' where you detect a new message:

  if (irrecv.decode(&results)) {
    Serial.println(results.value, HEX);
    irrecv.resume(); // Receive the next value
      ////  LIKE HERE
  }