Recently, I’ve been working on an Arduino-based multifunctional robot car. One of its modes is obstacle detection, where it can detect obstacles from approximately 4 meters away using an ultrasonic sensor. The rotating part is a servo motor, which continuously rotates up to 180° to scan and detect objects from different directions.

Components used: Arduino UNO board
L293D motor driver Ultrasonic sensor Bluetooth module
Servo motor 4 BO dual shaft Gear motor
2 Li-ion battery