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There has been a lot of discussion on the EVDL about corrosion caused by dissimilar metals. When you put two dissimilar metals together they act like a battery, and one metal gets oxidized and the other gets reduced. Two metals that are very prone to this effect are aluminum and copper. Whenever those two metals come in direct contact they will have this red/ox reaction. So, for example when a copper heat spreader comes in contact with an aluminum heat sink without an intermediate metal, of something like Noalox, or Oxguard. When an metal like zinc, lead, or gold are used to separate that metal to metal contact, the potential goes may down. On little parts on computers gold is sometimes used, because it is the best, and the amount used is tiny. Two other metals with a high dissimilarity are copper and steel. So, this is just something to keep in mind when designing the power section of the controller.
I think Eric is right. It would be nice to have version control. I don't have any experience in it so I can't really be of any help there. Maybe just a simple spread sheet would work, along with labeling schematics, and parts lists with Rev X.XX, or something. Again this is not my forte, but I can see the value in it.
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