this is a mcu daughterboard used for some keyboards from the orthocade series, namely Dig Dug, Brk Out and Froggr.
production files can be found here. The cases are designed for 1.2mm pcbs, but also work with 1.6mm pcbs without problems.
You will need the following parts to build one:
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1x capacitor - 0805 - 100nF
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3x resistor - 0805 - 10kOhm
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1x PCA9555 or TCA9555 IO-Expander
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1x 20pin 0.5mm pitch FCC/FCP Connector
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1x either Seeed Xiao RP2040 or Seeed Xiao BLE controller
optionally if you want to use BLE w/ battery:
- 1x battery connectro 2pin Molex Pico Blade
- 1x on/off switch MSK-12C02
Everything in this repository is free to use however you might see fit. If you want to support me and my projects, please consider linking back to this repository if you build/change/use anything.
If you would like to send me a tip, you could do it here (Please don't feel like you have to).