Wireless control using Arduino | Robot Controlling | Arduino Coding

Wireless Control of devices using Arduino and RF  ASK module.

Components required:-

1. RF ASK Module.
2. Two Arduino Boards.
3. Jumper wires.
4. Devices to be controlled.
5. Two 9 volt battery.

Prerequisites:-

•  ASK Communication.
• Basic Arduino Programming.

Let's start...

Transmitter :-

# include<VirtualWire.h>
int joyleft = 8;
int joyright = 9;
int f=10,b=11;
const int tx_pin = 7;
char msg[1],p;

void setup()
{
 pinMode(8, INPUT);
  pinMode(9, INPUT);
   pinMode(10, INPUT);
  pinMode(11, INPUT);
  vw_set_tx_pin(tx_pin);
  Serial.begin(9600);
  vw_setup(2000);
}
void loop()
{ int l=0,r=0;
  int s = 0,i=0,b; char d;
  s = digitalRead(f);
  i = digitalRead(11);
  r=digitalRead(joyright);
  l=digitalRead(joyleft);
  if(s==0 && i==0 && r==0 && l==0)
  {msg[0]= 'S';
  Serial.println("STOP");
  }
  if(s==1 && i==0)
  {
  msg[0]='F';
  Serial.println("Forward");
  }
  
  if(s==0 && i==1)
  {
  msg[0]='B';
  Serial.println("Backward");
  }
  if(r==0 && l==1)
  {
  msg[0]='L';
  Serial.println("Left");
  }
  if(r==1 && l==0)
  {
  msg[0]='R';
  Serial.println("right");
  }
// for(i=0;i<4;i++)
//{d=msg[i];
//Serial.print(d);
//}Serial.println();
vw_send((uint8_t *)msg,1);
vw_wait_tx();

}

Code 

This code is a Protocol of  Transmitter code and is for switching any device ON or OFF.

Receiver :-

Code 

# include<VirtualWire.h>

char r;

const int rx_pin = 6;

int i, c, l;

int motor_left1 =7, motor_left2 = 5;

int motor_right1 =4, motor_right2 = 3;

char p;

void setup()

{

  pinMode(7, OUTPUT);

  pinMode(5, OUTPUT);

  pinMode(4, OUTPUT);

  pinMode(3, OUTPUT);

  vw_set_rx_pin(rx_pin);

  Serial.begin(9600);

  vw_setup(2000);

  vw_rx_start();

}

void loop()

{//      digitalWrite(motor_right1, LOW);

//      digitalWrite(motor_right2, LOW);

//      digitalWrite(motor_left1, LOW);

//      digitalWrite(motor_left2, LOW);

{ int b = 0, c = 0;

   char f,l,r;

  uint8_t buflen = VW_MAX_MESSAGE_LEN;

  uint8_t buf[buflen];

  //Serial.println("gopu");

  if (vw_get_message(buf, &buflen))

  { //Serial.println("bajpai");

//    for(i=0;i<4;i++)

//    {

//      p=buf[i];

//      Serial.print(p);

//    }Serial.println();

    f=buf[0];

    Serial.println(f);

    if(f=='S')

    {

      digitalWrite(motor_right1, LOW);

      digitalWrite(motor_right2, LOW);

      digitalWrite(motor_left1, LOW);

      digitalWrite(motor_left2, LOW);

      Serial.println("stop");

    }

    if (f=='F')

    {

     

       digitalWrite(motor_right1, HIGH);

      digitalWrite(motor_right2, LOW);

     digitalWrite(motor_left1, HIGH);

      digitalWrite(motor_left2, LOW);

      Serial.println("forward");      

      

    }

   b=buf[0];

    if (b=='B')

    {

      digitalWrite(motor_right1, LOW);

      digitalWrite(motor_right2, HIGH);

      digitalWrite(motor_left1,HIGH);

      digitalWrite(motor_left2,LOW);

      Serial.println("Turning Right");

    }

      l=buf[0];

    if (l == 'L')

    {

      digitalWrite(motor_right1, HIGH);

      digitalWrite(motor_right2, LOW);

      digitalWrite(motor_left1,LOW);

      digitalWrite(motor_left2,HIGH);

      Serial.println("Turning left");

     

    }

    r=buf[0];

    if (r == 'R')

    {

         digitalWrite(motor_right1,LOW);

      digitalWrite(motor_right2,HIGH);

     digitalWrite(motor_left1,LOW);

      digitalWrite(motor_left2,HIGH);

      Serial.println("BACKWARD");

      

    }

   

 }

}}

This code is a Protocol of  Receiver code and is for switching any device ON or OFF.

Note :- From above given material one can learn How to make Transmitter and receiver. This kit of Transmitter and Receiver can be used to control various devices like making a remote control car.

Codes of Transmitter and Receiver of  RC Car:-

To download Tx Rx Code Click the link below.

Transmitter Code TX code
Receiver Code       RX code