RF Receiver

Z2M Part: EMC-00001-A

Receive wireless data with RF 433MHz receiver.

Circuit Diagram

Wire Connections & Pin Configuration

Wire Color Connections:

Yellow → Digital Pin 2 to RF receiver DATA
Red → 5V to RF receiver VCC
Black → GND to RF receiver GND

Pin Configuration:

Arduino Digital Pin 2 → RF receiver DATA
Arduino 5V → RF receiver VCC
Arduino GND → RF receiver GND

Arduino Code

Edit

#include <RH_ASK.h>
#include <SPI.h> // Required for compilation

// Create RF driver object
RH_ASK driver;

void setup() {
  Serial.begin(9600);
  if (!driver.init())
    Serial.println(\"RF Receiver init failed\");
  else
    Serial.println(\"RF Receiver ready\");
}

void loop() {
  uint8_t buf[32];      // Buffer for received data
  uint8_t buflen = sizeof(buf);

  if (driver.recv(buf, &buflen)) {  // Non-blocking receive
    Serial.print(\"Message received: \");
    Serial.println((char*)buf);
  }
}

Instruction Details

Wiring: Connect RF receiver VCC to 5V, GND to GND, DATA to Digital Pin 2.
Library: Sketch → Include Library → Manage Libraries → search "RCSwitch" or "VirtualWire" → Install.
Upload Code: Tools → Board → Arduino Uno. Tools → Port → select your COM port. Click Upload button.
View Output: Open Serial Monitor at 9600 baud. Press RF remote buttons to see received codes. LED indicates reception.

How to Use

Connect the required components as per the Pin Configuration above
Open Arduino IDE and create a new sketch
Copy and paste the code above
Select your Arduino board and COM port from Tools menu
Click the Upload button to upload the code to your Arduino
Open Serial Monitor (if applicable) to see the output

Components Required

Arduino Uno
433MHz RF Receiver Module
LED
220Ω Resistor
Breadboard
Jumper Wires

Category: Communication