Arduino - RF 433 Module Communication

In this Project, we will see about how to transfer data through RF433MHz module with Arduino.

Circuit Diagram:

Arduino Code:

rf_433_tx_code.ino

/*
   RF433 TRANSMITTER
*/

#include "VirtualWire.h"
char *msg;

void setup() {
  vw_set_tx_pin(8);
  vw_setup(4000);
}

void loop() {
  msg = "LED_ONN" ;
  vw_send((char *)msg, strlen(msg));
  vw_wait_tx();
  delay(3000);

  msg = "LED_OFF" ;
  vw_send((char *)msg, strlen(msg));
  vw_wait_tx();
  delay(3000);
}

rf_433_rx_code.ino

/*
   RF433 RECEIVER
*/

#include "VirtualWire.h"

void setup() {
  vw_set_rx_pin(8);
  vw_setup(4000);
  vw_rx_start();

  Serial.begin(9600);
  pinMode(13, OUTPUT);
}

void loop() {
  char buf[VW_MAX_MESSAGE_LEN];
  uint8_t buflen = VW_MAX_MESSAGE_LEN;

  if (vw_get_message(buf, &buflen)) {
    Serial.println(buf);
    String str(buf);
    if (str.equals("LED_ONN")) {
      digitalWrite(13, 1);
    }
    if (str.equals("LED_OFF")) {
      digitalWrite(13, 0);
    }
  }
}

Libraries Used:

1. Virtual Wire - https://www.airspayce.com/mikem/arduino/VirtualWire/

Youtube Video Tutorial:

https://youtu.be/C0hl3w2wiHg

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You can get the all the required files (like Circuit Diagram, Arduino.ino file, Libraries Used, and others) for the project  in ZIP format and much more...