Anyone used this ultra sonic ranger?

Forum 2005-2010 (read only) Hardware Interfacing
1

I'm trying to make a sonic ranger to work with arduino. The information on its website is not enough. It seems to me that I have to generate pulses and then detect them to deduce distance. But if that is true, why the crystal and two transducers?

Anyone used this one or a similar one? I appreciate any help.

http://www.seeedstudio.com/depot/ultra-sonic-range-measurement-module-p-626.html?cPath=84_90

PS, the ones thst sparkfun sells are not accurate enough for my purpose and I need something cheap as well. I know all the physics behind this. If someone could show me what this particular item has on its board, that would be great!

2

There is a sketch available on that page (Demo code under Documents). Have you tried running that sketch?

3

Thanks Paul. It says right in the program. Send a pulse and receive a pulse that represents a distance. So no, no need to generate the sequency of pulses and listen. Darn I didn't realize I could find this out form the program.