Monday, July 21, 2014

Fixing Dexter rev3 hardware defect

So Dexter rev3 has a hardware defect where PR-8210/A mode conflicts with VP-931 mode.  I had this crazy idea to remove one of the tiny SMT 2-input OR gates that I have on the board and replace it with a huge 3-input OR gate (DIP version) to fix this conflict.  I just soldered it up tonight and it seems to work great!  Future updates will have this fixed at the PCB level, so no need for this massive monstrosity on top.  But, hey, it works.  I really want rev3 to be fully functional no matter how many fixes it needs :)

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