Arduino + 433Mhz Tx code
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This is the code for the Arduino and 433Mhz radio module transmitter example for 1 byte data. You will need the VitrualWire library so download it from below and install it. Read all comments in the code in order to understand more. Downlaod the code from the link below or just copy the code from below as well.








schematic Arduino 433MHz radio



/* 1byte 433Mhz TRANSMITTER example.
/* Tutorial link: http://electronoobs.com/eng_arduino_tut99.php
 * Code: http://electronoobs.com/eng_arduino_tut99_code1.php
 * Scheamtic: http://electronoobs.com/eng_arduino_tut99_sch1.php
 * Youtube Channel: http://www.youtube/c/electronoobs   
// Arduino          433Mhz TX
// GND              GND
// 5V               VCC
// D3               Data
*/

#include <VirtualWire.h> //Download it here: http://electronoobs.com/eng_arduino_virtualWire.php
#define size 1
int pot = A0;
byte TX_buffer[size]={0};
byte i;


void setup() 
{
  // virtual wire
  vw_set_tx_pin(3); // pin
  vw_setup(2000); // bps
  for(i=0;i<size;i++)
  {
     TX_buffer[i]=i;
  }
}

void loop()
{ 
  int val = map(analogRead(pot),0,1024,0,255);
  TX_buffer[0] = val;  
  vw_send(TX_buffer, size); 
  vw_wait_tx(); 
  delay(10);   
}








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433MHz


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