Arduino'da IR sensör ile uzaktan kumanda çalışmıyor

#include <IRremote.h> // Include IRremote library.
#define DECODE_NEC // Define the protocol (NEC)
const byte IR_RECEIVE_PIN = 2; // IR receiver pin.
void setup()
{
 Serial.begin(9600); // Start serial communication.

 IrReceiver.begin(IR_RECEIVE_PIN, ENABLE_LED_FEEDBACK, USE_DEFAULT_FEEDBACK_LED_PIN); // Initialize IR receiver.
}

void loop()
{
 if (IrReceiver.decode()) // Check if IR signal received.
 {
 IrReceiver.resume(); // Prepare for next signal.
 }

 if (IrReceiver.decodedIRData.command != 0) // If valid IR command received.
 {
 checkIRcode(); // Process and print IR code.
 }
}

void checkIRcode()
{
 Serial.print("Raw = ");
 Serial.print(IrReceiver.decodedIRData.decodedRawData, HEX); // Print raw data in HEX.
 Serial.print(" Command = ");
 Serial.println(IrReceiver.decodedIRData.command); // Print decoded command.
 IrReceiver.decodedIRData.command = 0; // Reset command after processing.
}