void setup() Serial.begin(9600); IrReceiver.begin(IR_RX_PIN, ENABLE_LED_FEEDBACK);
void loop() if (IrReceiver.decode()) IrReceiver.printIRResultShort(&Serial); IrReceiver.resume(); // ready for next code gm4e01
Given the part number format, is most likely a Sharp IR (Infrared) Communication Module , specifically part of the GP2 series (sometimes labeled under "GM" for custom or older batches). It is commonly used for remote control reception (IR receiver) . void setup() Serial