Arduino ultrasonic sensor led projects | Hc-sr04 Ultrasonic sensor

Arduino Ultrasonic sensor ( Hc-sr04 ) with LEDs to measure the distance of object like is a very simple arduino projects for beginners. When an object comes close the hc-sr04 ultrasonic sensor indicates the distance using led. When red led is on that means the distance of an object is 50cm and yellow led is on that means the distance of an object is 4cm. ultrasonic sensor led project is some like a scale to finding distance measure of an object. we can easily extend the range of the Hc-sr04 senso