PIC18: Ultrasonic sensor

hc-sr04 In this article we are going to experiment with an ultrasonic sensor, the HC-SR04; it seems quite known and common, especially in the Arduino community, maybe because it is quite cheap and simple to operate.

Wanna discover how we can use it to measure the distance of an object, by interfacing it to the Freedom II development board? Yes? Coool! So... let's get started!

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