This is a simple library for the Arduino platform to read distance measurements from devices such as the Parallax Ping)) Ultrasonic Rangefinder. I bought a knockoff from Futurlec but it took about a month to get here from China through customs.
Copy the whole
Sonar folder into to your
There are more detailed directions in the Arduino docs
Using the library is dead simple:
#include <Ultrasound.h> int pinSonar = 7; Ultrasound sonar(pinSonar); int distanceCentimeters = sonar.read();