Wiring
Check pinout, power supply, common GND and voltage levels before connecting the module.
Full code
#include <IRremote.h>
const int recvPin = 2;
void setup() {
Serial.begin(9600);
IrReceiver.begin(recvPin);
}
void loop() {
if (IrReceiver.decode()) {
Serial.println(IrReceiver.decodedIRData.decodedRawData, HEX);
IrReceiver.resume();
}
}How it works
This lesson matches the page title and gives a clean starting point for this exact example.
Common mistakes
Check board selection, wiring, libraries, power supply and serial monitor baud rate.