>Date: Tue, 24 Aug 1999 13:20:38 +0800 >From: Kevin Darch >Subject: Ultrasonic. > >Hi Guys, > >Any ideas where i could find a circuit for a microcontoller based ultrasonic >"tape measure" or even any information on how i can go about building one. I >want to use the least amount of components as possible. Check the Parallax Stamp I Application Note # 12. Also, Scott Edwards "Programming and Custumizing the BASIC Stamp Computer" book has an example. -- Greg