As far as switching the polarity, look into Arduino. There is a bit of learning curve, but not a huge one. Lots of good stuff on Maker's blog.
Senior Member
As far as switching the polarity, look into Arduino. There is a bit of learning curve, but not a huge one. Lots of good stuff on Maker's blog.
Do not follow where the path may lead. Go instead where there is no path and leave a trail.
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