[sdiy] touch-sensitive switches - how?

S Ridley spridley1 at gmail.com
Tue Apr 27 21:53:53 CEST 2021


There's an old article on touch sensing from PAiA's John Simonton here:

https://paia.com/touchsw/


The Serge TKB uses an obscure 16 channel multiplexer and one touch
detection circuit.

Steve







On Tue, 27 Apr 2021 at 19:53, Neil Harper via Synth-diy <
synth-diy at synth-diy.org> wrote:

> how are touch-sensitive switches like the ones on this done?:
>
> https://www.perfectcircuit.com/random-source-tkb-3-5mm-jacks.html
>
> being able to do something like this, especially if it's latching  (one
> press on, one press off) would come in very handy. but i've never come
> across it in any diy schematics.
>
> i see that a few microcontrollers like the teensy have capacitance touch
> pins, but i'm wondering if things like sequencer are done all discrete?
>
>
> --
> /// Neil Harper
> /// Every Wave is New Until it Breaks
>
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