Inside the light is an Arduino Nano, which reads from the ultrasonic sensor mounted underneath the enclosure and lights up the appropriate LED depending on the car’s distance.

This project simulates a smart alert system using an HC-SR04 ultrasonic sensor, LED, and buzzer. Built and tested in the Wokwi simulator, it demonstrates how proximity detection can trigger safety ...

This paper provides details about the design and operation of a Collision Avoidance System in smart cars, with the Arduino board as the central control unit, interfaced with an ultrasonic sensor, LEDs ...