How To Make A DIY SmartPhone Control Car

How To Make a DIY SmartPhone Control Car

Hello friends, today we are going to make a mobile controlled Bluetooth car. You can control this car from any smart mobile laptop or tablet.

To make this car, we used some electronics modules, the list of which you will find below.

Arduino Uno – https://amzn.to/3yWQBU0
L298N Motor Drive – https://amzn.to/4cmYUH0
HC 04 Bluetooth Module – https://amzn.to/45nOBAp
12v Battery – https://amzn.to/3xmS1qz
4x Weel – https://amzn.to/3KIotXx
Car Frame – https://amzn.to/3Vo1C8p
Jumper Wires –

This is the circuit diagram of this car, you have to do its wiring by looking at it.

After this, you have to connect Arduino to your mobile or your laptop and download Arduino software in it. If you want to upload the code from mobile, then you have to download the App named Arduinodroid and enter the code given below. have to upload it to arduino

Copy Code And Upload –

char t;
 
void setup() {
pinMode(13,OUTPUT);   //left motors forward
pinMode(12,OUTPUT);   //left motors reverse
pinMode(11,OUTPUT);   //right motors forward
pinMode(10,OUTPUT);   //right motors reverse
pinMode(9,OUTPUT);   //Led
Serial.begin(9600);
 
}
 
void loop() {
if(Serial.available()){
  t = Serial.read();
  Serial.println(t);
}
 
if(t == 'F'){            //move forward(all motors rotate in forward direction)
  digitalWrite(13,HIGH);
  digitalWrite(11,HIGH);
}
 
else if(t == 'B'){      //move reverse (all motors rotate in reverse direction)
  digitalWrite(12,HIGH);
  digitalWrite(10,HIGH);
}
 
else if(t == 'L'){      //turn right (left side motors rotate in forward direction, right side motors doesn't rotate)
  digitalWrite(11,HIGH);
}
 
else if(t == 'R'){      //turn left (right side motors rotate in forward direction, left side motors doesn't rotate)
  digitalWrite(13,HIGH);
}

else if(t == 'W'){    //turn led on or off)
  digitalWrite(9,HIGH);
}
else if(t == 'w'){
  digitalWrite(9,LOW);
}
 
else if(t == 'S'){      //STOP (all motors stop)
  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
}
delay(100);
}

After the code is uploaded, you have to download “Arduino Car” app, connect the car through Bluetooth and also you can drive this car through Bluetooth.