How does the HC-SR04 Ultrasonic Sensor work?

How does the HC-SR04 Ultrasonic Sensor work?

The HC-SR04 Ultrasonic Sensor is a popular sensor module used for measuring distance with the help of ultrasonic waves. It’s widely used in robotics, automation, and various DIY projects. HC-SR04 sensor operates on a principle similar to SONAR (Sound Navigation and Ranging) technology used in submarines. It consists of two ultrasonic transducers: a transmitter (The…