MisterBotBreak
Published

How to Communicate Using 433MHz Modules

This project will show you how to communicate using 433MHz modules.

BeginnerProtip12 minutes27,770
How to Communicate Using 433MHz Modules

Things used in this project

Hardware components

Arduino UNO
Arduino UNO
×2
433MHz modules ( transmitter + receiver )
×1
Rotary potentiometer (generic)
Rotary potentiometer (generic)
×1
Jumper wires (generic)
Jumper wires (generic)
×1
SG90 Micro-servo motor
SG90 Micro-servo motor
×1

Software apps and online services

Arduino IDE
Arduino IDE

Story

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Code

Transmitter ( potentiometer value )

Arduino
#include <VirtualWire.h>

void setup() {
  vw_setup(2000);
}
 
void loop() {
  int transmit = analogRead(A0);
  vw_send((byte *) &transmit, sizeof(transmit)); 
  vw_wait_tx(); 
}

Receiver ( potentiometer value )

Arduino
#include <VirtualWire.h>

void setup() {
  Serial.begin(9600);
  vw_setup(2000);
  vw_rx_start(); 
  Serial.println("Value : ");
}

void loop() {
  int transmit;
  byte wireless = sizeof(int);
  vw_wait_rx();
  if (vw_get_message((byte *) &transmit, &wireless)) {
    Serial.println(transmit); 
  }
}

Transmitter ( potentiometer + servo )

Arduino
#include <VirtualWire.h>

void setup() {
  vw_setup(2000);
}
 
void loop() {
  int transmit = analogRead(A0);
  vw_send((byte *) &transmit, sizeof(transmit)); 
  vw_wait_tx(); 
}

Receiver ( potentiometer + servo )

Arduino
#include <VirtualWire.h>
#include <Servo.h>

Servo servo;

void setup() {
  servo.attach(3);
  Serial.begin(9600);
  vw_setup(2000);
  vw_rx_start(); 
  Serial.println("Value : ");
}

void loop() {
  int transmit;
  byte wireless = sizeof(int);
  vw_wait_rx();
  if (vw_get_message((byte *) &transmit, &wireless)) {
    Serial.println(transmit); 
    int valueservo = map(transmit,0,1024,0,180);
    servo.write(valueservo);
  }
}

Credits

MisterBotBreak

MisterBotBreak

48 projects • 149 followers
I love electronics and cats :D !

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