2262/2272 315MHz 4-Key Wireless Remote Control Kit: Short-Range Smart Control

				
					// Define the Arduino pins corresponding to D0-D3 of the 2272 receiver board
const int recvPinD0 = 2;
const int recvPinD1 = 3;
const int recvPinD2 = 4;
const int recvPinD3 = 5;

// Define the Arduino pins corresponding to the LEDs
const int ledPin1 = 6;
const int ledPin2 = 7;
const int ledPin3 = 8;
const int ledPin4 = 9;

void setup() {
  // Set the receiver pins as input mode
  pinMode(recvPinD0, INPUT);
  pinMode(recvPinD1, INPUT);
  pinMode(recvPinD2, INPUT);
  pinMode(recvPinD3, INPUT);
  
  // Set the LED pins as output mode
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
  pinMode(ledPin4, OUTPUT);
  
  // Turn off all LEDs initially
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin3, LOW);
  digitalWrite(ledPin4, LOW);
}

void loop() {
  // Read the voltage levels of D0-D3 on the 2272 receiver board (outputs high level when the button is pressed)
  int d0State = digitalRead(recvPinD0);
  int d1State = digitalRead(recvPinD1);
  int d2State = digitalRead(recvPinD2);
  int d3State = digitalRead(recvPinD3);

  // Button A (D0) controls LED1
  digitalWrite(ledPin1, d0State);
  // Button B (D1) controls LED2
  digitalWrite(ledPin2, d1State);
  // Button C (D2) controls LED3
  digitalWrite(ledPin3, d2State);
  // Button D (D3) controls LED4
  digitalWrite(ledPin4, d3State);
}