An Arduino-based robot car that operates in two modes: autonomous line-following using IR sensors, and manual control via Bluetooth commands. A push button allows switching between modes, while LEDs and a buzzer provide interactive feedback. The system uses an L298N motor driver for precise motor control.
- Dual Mode Operation: IR sensor line-following or Bluetooth manual control
- Line Following: Detects black line using two IR sensors and adjusts direction
- Bluetooth Control: Commands for forward, left, right, stop, horn, and LEDs
- Interactive Feedback: Buzzer honk and LED indicators
- Debounce Logic: Stable push-button mode switching
- Arduino Uno (or compatible board)
- L298N Motor Driver Module
- DC Motors (x2)
- IR Sensors (x2)
- Bluetooth Module (HC-05 or HC-06)
- Push Button
- LEDs (x2)
- Buzzer
- Power supply
- IR Sensors: Right → A0, Left → A1
- Motor Driver (L298N):
- enA → Pin 10, in1 → Pin 9, in2 → Pin 8
- enB → Pin 5, in3 → Pin 7, in4 → Pin 6
- Button: Pin 4 (with internal pull-up)
- Buzzer: Pin 13
- LEDs: Pin 11 and Pin 12
- Bluetooth Module: RX → Pin 2, TX → Pin 3
- IR Mode: Robot follows a line using sensor input.
- Both sensors on line → move forward
- Right off line → turn right
- Left off line → turn left
- Both off line → stop
- Bluetooth Mode: Receives commands (
F,L,R,S,V,1,0,W,U,w,u) to control movement, buzzer, and LEDs. - Button: Toggles between IR and Bluetooth modes with debounce logic.
- Motor Control: PWM speed adjustment for smooth movement.
- Add obstacle detection with ultrasonic sensors
- Integrate mobile app for advanced Bluetooth control
- Include speed adjustment commands via Bluetooth
- Add rechargeable battery monitoring system