And I went by the datasheet VS the Sparkfun schematic for the VUSB connection (pin #35) to the cap. It's not crystal-clear what they're doing with this pin. It shows ---> with 3.3V just below it. Not sure if they didn't connect this pin or if they ran it to the other 3.3V connections with --->3.3V?
It wasn't clear at all to me. I located the source files of the CUI32. Here is a view of how they really have it connected... Following the datasheet sounds like a good idea.
I looked over the obvious on your pcb, and I can't find any mistakes. Pin6 of the programming header doesn't go anywhere, but you probably knew that.
Pin #35
Originally Posted by Bruce
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