Send IR values using infrared emitter led on Arduino

Question

i have Arduino Mega and an IR Emitting LED and i want to send data "Hex Data" that i choose using this LED and i have tried the IRRemote Library and i have successfully used the IRrecv class, but when using IRsend i didn't get any signal and have tried to look at the led through the mobile camera
the IR Emitter Pin is PWM 3 and have connected it to 3.3V once and to 5V once

#include <IRremote.h>

IRsend irsend;

void setup()
{
  Serial.begin(9600);
}

void loop() {
  if (Serial.read() != -1) {
    for (int i = 0; i < 3; i++) {
      irsend.sendSony(0xa90, 12); // Sony TV power code
      delay(40);
    }
  }
}

and for the receiver:

#include <IRremote.h>

int RECV_PIN = 11;

IRrecv irrecv(RECV_PIN);

decode_results results;

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

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

any help is appreciated :) Hiso

Solution

i Have looked at the IRRemote.cpp library you refereed to and in the header file you can see that each Arduino board have a unique PWM pin that is used to transmit infrared data so use PWM 9 it's assured to work on Arduino Mega

Comments

[Werner Kvalem Vesterås]

What type of IR receiver are you using?

[Haitham Sy]

@WernerVesterås this is the datasheet arduino-info.wikispaces.com/file/view/IR-Receiver-AX-1838HS.‌​pdf

[Werner Kvalem Vesterås]

According to the troubleshooting guide, the LED on pin 13 (the onboard LED) will blink when IR is received. Does this happen?

[Haitham Sy]

@WernerVesterås when i use the receive example alone the light blinks but when combing the two examples together the LED stops blinking

[praks411]

This could hardware problem. Try changing the LED and check if it is the same PWM pin used in the library. You may also want to increase the delay to 100 from 40 as per example.