Distance Controlled LED Lights Using Ultrasonic Sensor and Arduino #arduino

This beginner-friendly Arduino project uses an HC-SR04 Ultrasonic Sensor to measure distance and control multiple LEDs based on how close an object is. As an object moves closer to the sensor, more LEDs turn on. It's a simple yet powerful demonstration of how input (sensor data) can be used to control output (LEDs) in real-time. Ideal for learning distance sensing, conditional logic, and basic electronics.