If you expect the signal to swing between 0 and +5V then set the trigger level to somewhere around 2.5V.
As with input coupling the trigger coupling can usually be set to either AC or DC. Perhaps...
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Re: Scanning encoder debounce on new scope
This can work just fine:
Ioannis Today, 06:571. Set up a timer interrupt at 10ms. Or even at 1ms and after ten int's do step 2.
2. Every interrupt read the buttons into the arrays. You can use a low priority...