#include <IRremoteESP8266.h>
 
int RECV_PIN = 2; //an IR detector/demodulatord is connected to GPIO pin 2
 
IRrecv irrecv(RECV_PIN);
decode_results results;
 
void setup()
{
  Serial.begin(9600);
  irrecv.enableIRIn(); // Start the receiver
}
 
void loop() {
  if (irrecv.decode(&results)) {
    // Print value
    Serial.println(results.value, HEX);
    irrecv.resume(); // Receive the next value
  }
}