I want to eventually design a version with a touch probe output, but that's looking difficult because if I use a UMMC/IPEX/uFL connector, the body would be at VDD which could short the adjacent capacitor, and if connecting to a chassis for an extension cable, this would lead to VDD going to the chassis which is all sorts of bad.
Hi @Sina Roughani and @Larock1234 i believe this is possible using the custom configurable logic on many of the "new" ATtiny 0 and 1 series parts. There is a Microchip app note AN2434 on how to implement the encoder capture within the CCL. The attiny parts are around $1 or less so this is a cheaper option. You can probably configure them to output i2c if you want many devices in one system. I have not implemented it but it's on my todo list.