Ultrasonic distance sensor

  • Ultrasonic distance sensor measures distance by sending ultrasound (40 kHz) and this ultrasound will bounce off the obstacle and return to the sensor.

    Distance is measured by time it takes the ultrasound to travel from the sensor and back to the sensor.

     

  • Document

    Ultrasonic distance sensor

    This document describes what ultrasonic distance sensor is, how to connect it to arduino board and shows an example how to create a simple use of the sensor.

    Ultrasonic Sensor HC-SR04 and Arduino Tutorial

    Youtube video