Bluetooth Controlled 2-Motor Car/Bot Using Arduino

It is a simple project which can be done by following the below steps:

1. Simply connect the wires as shown in schematics.

2. Upload the code given in description.

void setup() {
Serial.begin(9600);
pinMode(2,OUTPUT);
pinMode(3,OUTPUT);
pinMode(6,OUTPUT);
pinMode(7,OUTPUT); 
}  
void loop() {
 if(Serial.available()>0)
 {
   char data=Serial.read();
   Serial.println(data);
   if(data=='f')
   {
     digitalWrite(2,HIGH);
     digitalWrite(6,HIGH);
     digitalWrite(3,LOW);
     digitalWrite(7,LOW);
   }
   if(data=='b')
   {
     digitalWrite(3,HIGH);
     digitalWrite(7,HIGH);
     digitalWrite(2,LOW);
     digitalWrite(6,LOW);
   }
   if(data=='s')
   {
     digitalWrite(2,LOW);
     digitalWrite(6,LOW);
     digitalWrite(3,LOW);
     digitalWrite(7,LOW);
   }
   if(data=='l')
   {
     digitalWrite(2,LOW);
     digitalWrite(6,HIGH);
     digitalWrite(3,LOW);
     digitalWrite(7,LOW);
   }
   if(data=='r')
   {
     digitalWrite(2,HIGH);
     digitalWrite(6,LOW);
     digitalWrite(3,LOW);
     digitalWrite(7,LOW);
   }
 }
}

3. Dowload the app the link:

https://play.google.com/store/apps/details?id=com.giumig.apps.bluetoothserialmonitor&hl=en

>>first of all connect the bluetooth to the HC-05 shown in available device list, if it asks for password enter 1234 or 0000.

>>after connecting, click on the terminal option, then control the bot by giving the command like 'f' for forward and 'b' for backward etc.