RF Transmitter

Z2M Part: EMC-00001-A

Send wireless data with RF 433MHz transmitter.

Circuit Diagram

Wire Connections & Pin Configuration

Wire Color Connections:

Yellow → Digital Pin 12 to RF transmitter DATA
Red → 5V to RF transmitter VCC
Black → GND to RF transmitter GND

Pin Configuration:

Arduino Digital Pin 12 → RF transmitter DATA
Arduino 5V → RF transmitter VCC
Arduino GND → RF transmitter 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 Transmitter init failed\");
  else
    Serial.println(\"RF Transmitter ready\");
}

void loop() {
  const char *msg = \"Hello World!\";
  driver.send((uint8_t *)msg, strlen(msg));
  driver.waitPacketSent();
  Serial.println(\"Message sent: Hello World!\");
  delay(1000);
}

Instruction Details

Wiring: Connect RF transmitter VCC to 5V, GND to GND, DATA to Digital Pin 12.
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: Transmitter sends wireless codes. Use matching 433MHz receiver to receive. Ensure same library/coding on both sides.

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 Transmitter Module
Breadboard
Jumper Wires

Category: Communication