Tune-O-Matic tuner

[fredrik]

@telec16

The input resistance (R3 on my schematic) should be fairly low, as someone (I think it was @fredrik ?) pointed out before

Yeah, datasheets for both AVR and PIC recommend 10k or below (at least with the default samping intervals):

1145 VC LFO Module

I’d say maybe – worth trying but may not work great. As you say, they’re voltage dividers, but assuming the ADC inputs on the PIC are similar to the one’s on the AVR (Arduino), they aren’t the usual high impedance inputs, but instead they use a sample and hold capacitor that needs a certain current to charge fast enough. AVR recommends keeping the source impedance at 10k or below for reliable operations (and I should go read the PIC data sheets I guess but have actual work work to do). EDIT: Na…

The built-in clamping diodes are supposedly good for around 1 mA, so if they’re good enough on their own depends on your worst case scenarios