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Subject: [DPRG] Phase Shift
From: John Swindle swindle at compuserve.com
Date: Tue Jul 22 13:03:08 CDT 2008

For info on laser rangefinders, check out Sam's Laser FAQ. It is 
posted on several web sites. Somewhere in there is the article, 
or a link to the article, that shows how to use a 25MHz circuit 
and a cheap laser to make a rangefinder based on time-of-flight 
(as opposed to triangulation, which can be done without pulsing 
the laser).

Sorry I don't have time to find the article for you, but I do 
remember reading the article several years ago. So, good luck.

If you don't find it there, check out the Seattle Robotics 
archive.

John Swindle

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