custom topre (electrocapacitive) keyboard building guide forked from https://github.com/tomsmalley/custom-topre-guide
 
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README.md

Guide for designing a custom Topre keyboard

Circuitry

Overview

The method I use to sense key depression is rather simple. In tests that I have done it works well provided some calibration is performed in the firmware to normalise the readings.

Schematic

Hardware (case/plate)

Firmware