you can turn capacitance into a waveform pretty easily, thats what the 555 timer does effectively, measure the time it takes to fill a capacitor. (https://en.wi

you can turn capacitance into a waveform pretty easily, thats what the 555 timer does effectively, measure the time it takes to fill a capacitor. (https://en.wikipedia.org/wiki/555_timer_IC https://en.wikipedia.org/wiki/555_timer_IC its analogue.)