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- Wed Sep 18, 2013 2:26 pm
- Forum: Hardware
- Topic: 9x upgrade to ATmega128A3-AU + Reboot With Horiz Trims
- Replies: 167
- Views: 102544
Re: 9x upgrade to ATmega128A3-AU + Reboot With Horiz Trims
Geoff, you -- and Mike B but I somehow missed it -- have nailed it. Guess what?! ... There is indeed no digital ground connected to ONLY the HORIZONTAL trim switches. The vertical trim switches get digital ground, while the horizontal ones get only analog ground, which is then passed on up to the p...