Interfacing HC-SR04 Ultrasonic Sensor with Raspberry Pi

Contents Ultrasonic distance sensors are designed to measure distance between the source and target using ultrasonic waves. We use ultrasonic waves because they are relatively accurate across short distances and don’t cause disturbances as they are inaudible to human ear. HC-SR04 is a commonly used module for non contact distance measurement for distances from 2cm … Continue reading Interfacing HC-SR04 Ultrasonic Sensor with Raspberry Pi