Controlling Motor Speed with an Ultrasonic Sensor
In this project, we use an Arduino Nano, an ultrasonic sensor, a breadboard, jumper cables, an L293D motor driver IC, and a 9V battery to control motor speed. The ultrasonic sensor adjusts the motor's speed based on the distance of an object. When an object moves closer to the sensor, the motor speed increases, and when it moves away, the speed decreases.