Ultrasound Module


Started: 2015-08-15
Ongoing project

Ultrasound sensors are available for a very low price which makes them attractive for experimentation and use in low-cost robotics projects. They sense distance by an emitting a timed frequency pulse higher than human hearing but below the radio range, with one transducer acting as a speaker and the other acting as the microphone.

This project aims to integrate four inexpensive ultrasound range-finders into one small module for use as a simple navigation and obstacle-avoidance system. There are several challenges involved, from timing the sound pulses to avoid interfering with each other to ensuring that abnormal readings as a result of the doppler effect do not represent an inaccurate picture of the physical world.