BLUETOOTH CONTROLLED CAR

A Bluetooth control car uses your smartphone or tablet as a remote control. It works by having a Bluetooth module in the car that receives commands from an app. These commands are then operated by a microcontroller on the car, which controls the motors to steer and go.

CIRCUIT DIAGRAM

This project explores building a Bluetooth controlled car using an Arduino Uno microcontroller, an HC-05 Bluetooth module, and a buzzer .

Components List –

1. Arduino Uno: A Microcontroller
2. HC-05 Bluetooth Module: Bridges the gap between your phone and the Arduino for wireless communication.
3. DC Motors (2): Power the wheels and propel the car.
4. Motor Driver (L298N or Similar): Safely manages the high current needed by the motors based on Arduino signals.
5. Wheel Caster Set (2): Provides steering and maneuverability.
6. Chassis: The base that holds all the components together (pre-built or DIY).
7. Power Source: Batteries (e.g., Li-ion) to provide juice for the car.
8. Jumper Wires: Connect all the electronic components.
9. Breadboard (Optional): Useful for prototyping the circuit before final assembly.
10. Buzzer: Adds an auditory element for feedback (e.g., honking sound).
11. Smartphone with Bluetooth App: Pre-built app or custom-made one to send directional controls (forward, backward, left, right) to the Arduino.

CODE

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);
}

BLUETOOTH CONTROLLED CAR

A Bluetooth control car uses your smartphone or tablet as a remote control. It works by having a Bluetooth module in the car that receives commands from an app. These commands are then operated by a microcontroller on the car, which controls the motors to steer and go.

CIRCUIT DIAGRAM

This project explores building a Bluetooth controlled car using an Arduino Uno microcontroller, an HC-05 Bluetooth module, and a buzzer .

CODE

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