2,The motor driver module uses a typical L298N module to drive a DC motor.
3. The infrared signal detection module uses four pairs of infrared light to detect the black line and realize the tracking function.
4. The ultrasonic sensor module adopts HC-SR04 module, through which the distance is measured to realize the function of ultrasonic obstacle avoidance.
5. The combination of ultrasonic wave and two infrared detection modules realizes the following function.