DIY Car

In addition to being suitable for simple experiments, the Robot HAT is ideal for use as a central controller in robotics, such as for smart cars.

In this project, we built a simple line-following car.

Code

from robot_hat import Motors, Pin
import time

# Create motor object
motors = Motors()

# Initialize line tracking sensor
line_track = Pin('D0')

def main():
    while True:
        # print("value", line_track.value())
        # time.sleep(0.01)
        if line_track.value() == 1:
            # If line is detected
            motors[1].speed(-60)  # Motor 1 forward
            motors[2].speed(20) # Motor 2 backward
            time.sleep(0.01)
        else:
            # If line is not detected
            motors[1].speed(-20) # Motor 1 backward
            motors[2].speed(60)  # Motor 2 forward
            time.sleep(0.01)

def destroy():
    # Stop motors when Ctrl+C is pressed
    motors.stop()
    print("Motors stopped.")

if __name__ == '__main__':
    try:
        main()
    except KeyboardInterrupt:
        destroy()