View Full Version : Ultrasonic Distance Measurements

02-10-2005, 05:22 AM
Does anyone know of an ultrasonic distance measuring module? I kind of remember an article on one recently, possible in Nuts and Volts, possibly concerning a Stamp.

I could use some suggestions on parts and sources.


Jon Williams
02-10-2005, 05:26 AM
A very popular sonar module is the SRF-04 made by Daventech and sold by Parallax and many others. It uses two IO pins: one to trigger the device, the other to measure the echo pulse width that corresponds to the distance to the target.

Jon Williams
Applications Engineer, Parallax
Dallas, TX· USA

02-10-2005, 05:27 AM
Go to www.parallax.com (http://www.parallax.com) and check out #28015.

Really weird kid

02-10-2005, 12:06 PM
Mr. Robot has one that can measure up to 40 feet (gives off continuous voltage proportional to distance without additional programming). But beware, his service is SLOW!

02-11-2005, 01:11 AM
Awesome responces, thanks all!