Give a short LOW pulse beforehand to ensure a clean HIGH pulse: The sensor is triggered by a HIGH pulse of 10 or more microseconds.

Go to File ExamplesUltrasonic sensor library Ultrasonic testerĬomplete Guide for Ultrasonic Sensor HC-SR04.

ZIP library and select the library you’ve just downloaded

Install the Ultrasonic in your Arduino IDE: go to Sketch  Include Library Add.

Rename the extracted folder to Ultrasonic Sensore and remove the “-“.

Test distance = (high level time×velocity of sound (340M/S) / 2, Wire connecting direct as following:Ĭonnecting Ultrasonic Sensor an the Arduino:īelow you can find the code you need for this project. (3) IF the signal back, through high level, time of high output IO duration is the time from sending ultrasonic to returning.

The basic principle of work: (1) Using IO trigger for at least 10us high level signal, (2) The Module automatically sends eight 40 kHz and detect whether there is a pulse signal back. The modules includes ultrasonic transmitters, receiver and control circuit. Ultrasonic ranging module HC - SR04 provides 2cm - 400cm non-contact measurement function, the ranging accuracy can reach to 3mm. Ultrasonic sensor can detect movement of targets and measure the distance to them in many automated factories and process plants.

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Ir sensor library for proteus github