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Old Jul 08, 2007, 07:10 AM
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Make something. Anything!
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Syracuse Hancock, New York, United States
Joined Jul 2003
1,024 Posts
Board completed but more to do.

The basic circuit board is finished but there are still a few touches to add to give a fully functional control.

An aluminum heat sink is needed for the driver chips. I first scribed a line 1/4" up from the bottom of the heat sink. Then I used aligator clips from the third hand tool to hold the heat sink in place on the driver chips. I then took a Sharpie marker and marked the location of the center of each mounting hole in the driver chips. Then I removed the heat sink and center punched each mark. Next I drilled holes through the heat sink and used a 4-40 tap and cutting fluid to tap the holes. I deburred the holes, put a little heat sink compound on the driver chip lugs and mounted the heat sink with 4-40 screws.
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Last edited by bgriggs; Jul 08, 2007 at 07:16 AM.
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