On Sat, 27 Oct 2018 at 17:27, andy pugh <[email protected]> wrote: > On Sat, 27 Oct 2018 at 15:38, Eric Keller <[email protected]> wrote: > > > The $20 MPG dials seem a > > little large for a feed rate override. > > There are lots of 2-channel encoder switches in a potentiometer-like > format. > Typically 16 clicks per rev. > > There are BCD coded ones too, but they need more IO pins each (4) > https://www.ebay.co.uk/itm/142979578446 > > I you use a volume pot with detents, going to an Arduino as Les said, then you can do A/D and probably get the 'correct' value, as in the display will show 100% because the pot is say 8k +- 200R
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