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DIY minimal Arduino

Re: DIY minimal Arduino

Postby WalterMo » Tue Jul 19, 2011 7:39 pm

Have you ever checked the temperature of the main IC on the EasyDriver board? Can you leave your fingers there?
If not, reduce the 12V down to 9V. And glue a heatsink onto this IC. Reduce the motor current with the small potentiometer on the board.
If this all doesn't work try it with the Pololu driver, it's a bit stronger: ... rtreiber-R


Edit: The matter of the heat is only an idea, maybe the electronics of the board is damaged.
This could have been caused by:
1. Connecting the motor when the board was powered.
2. In the beginning you have used only 3V to supply the EasyDriver, but minimum 7V is rated.
Maybe due to a too low supply voltage of the input stages (they need 5V which is "made" from the 7V) the inputs for (dir)ection and step are damaged.
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Re: DIY minimal Arduino

Postby Hordes » Tue Jul 19, 2011 11:49 pm

OK. Thanks Walter. Will do some more fiddling.

The IC does get quite hot.
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