# Voltage Triangulation // XY Control Plane Module Idea

**URL:** <https://lookmumnocomputer.discourse.group/t/voltage-triangulation-xy-control-plane-module-idea/6057>\
**Category:** DIY STUFF\
**Created:** [April 6, 2023, 12:06pm UTC](https://lookmumnocomputer.discourse.group/t/voltage-triangulation-xy-control-plane-module-idea/6057 "2023-04-06T12:06:32Z")\
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**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\
**Post date:** [April 6, 2023, 12:23pm UTC](https://lookmumnocomputer.discourse.group/t/voltage-triangulation-xy-control-plane-module-idea/6057/2 "2023-04-06T12:23:58Z")

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“You’ll need to choose a material with a reasonably high resistance.” Copper is not noted for that.

I’m guessing, though, you could design a PCB with traces to eight contact points for the touchpad, and then paint the touchpad onto it with conductive paint.

A touch surface might be of interest for something like a small desktop synth. For a modular, it seems to me a [joystick](https://lookmumnocomputer.discourse.group/t/ao-joystick-kosmo-module/4307) would serve better.

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