How to Interface Ultrasonic Sensor HC-SR04 with Arduino Uno
Overview of Ultrasonic Sensor The Ultrasonic Module HC-SR04 operates on the principle of SONAR and RADAR, making it useful for measuring the distance of an object within the range of 2 cm to 400 cm. The module consists of four pins: When a pulse of 10 µs or more is applied to the Trig pin, …
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