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Thanks for sharing this, it's great to see your process.

I'm working on something vaguely related, a grid-based synth-controller/sequencer with a bunch of i2c shift registers and laser cut hardware. I've been thinking about building a pressure-sensitive hex-layout keyboard next, you've given me a bunch of ideas and inspiration.

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Thanks. Pressure sensing is actually pretty simple and cheap, unless you have a really large number of inputs (like I have). I was planning to switch to a matrix layout in the next version to reduce the number of ADC chips I need, but then I'll have to figure out how to mitigate ghosting.

I haven't used any of Sensitronic's producs, but they do have a lot of good information on their site about the various ways to use force-sensitive resistors.

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