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Fast VEX Line Following Robot 
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Joined: Fri Feb 09, 2007 9:21 am
Posts: 616
Post Fast VEX Line Following Robot
The Sept/Oct 2009 issue of Robot magazine has an article on a very fast VEX line following robot.

There's a video of the robot at It uses a PID control algorithm.. The robot runs at almost two feet per second. It was programmed in ROBOTC; complete source code is included as one of the sample programs that come with a ROBOTC download. shows the same robot programmed with a basic “zig zag” algorithm. The maximum speed of this robot is about six inches per second before it is unable to follow the line.

PS. I wrote the article for Robot magazine.

Wed Jul 22, 2009 3:26 pm
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