Does anyone have a list of potential dos and do nots for PCB layouts involving power planes and ground planes? I've done some googling and haven't found anything really relevant to potential things you may not want to do. For example, is it considered OK to place a power fill plane on the same layer as some of your digital I/O? (None of this is high speed). I'm hoping maybe someone has a list of things I should watch out for. I know there are some guys on here with *years* of layout experience, so I figure I would poke the grey matter a bit before sending off this board. -- Shawn Wilton (b9 Systems) http://black9.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist