This project demonstrates how to use an Arduino Uno with a light sensor to control an LED based on the ambient light intensity. When the ambient light level exceeds a certain threshold, the LED turns ...

// Connect pin 2 of the sensor to the data pin defined on your Arduino // Connect pin 4 of the sensor to GND // Connect a 10K resistor between pin 2 (data) and pin 1 (VCC) of the sensor ...

This project demonstrates a low-cost intelligent traffic signal system using Arduino and ultrasonic sensors to reduce congestion caused by fixed-timer traffic lights. Four HC-SR04 sensors detect ...