bread80,
@bread80@mstdn.social avatar

I want to see if I can make my keyboard a bit less ‘squidgy’. I’ve bought a selection of the thinnest tactile switches I can find to experiment with. The switches here run from 0.8mm to 2.5mm.

bread80,
@bread80@mstdn.social avatar

The keyboard is constructed of a rubber mat with a dome for each key. The largest of the switches just sits inside a dome.

Underside of the mat showing the moulding under each dome which pushes into the matrix. The biggest of my switch samples just fits inside a dome.

bread80,
@bread80@mstdn.social avatar

My plan is to design a small section of PCB to run tests on.

The locating pins under the board are about 3mm tall. They need to position both the matrix and the rubber mat. Standard PCBs are 1.6mm thick. I’m planning to test different PCB thicknesses.

I note PCBWay can go down to 0.6mm on a $5 board. 0.6mm sounds mighty fragile. Especially on such a large board.

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