Irremoteesp8266 example

#include <IRremoteESP8266.h>
 
int RECV_PIN = D4; //an IR detector connected to D4
 
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
  }
  delay(100);
}

Source: esp8266learning.com

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