After seeing the Miryoku layout on the web, I really wanted to try with a 36-key keyboard.
I looked some keyboards, like Iris, Crowboard, Kyria, etc., and I feel that I need to create keyboard geometry that fits my hands.
So I printed those layout and modify them to fit my hands and hopefully it will work.
This keyboard is a non-split linear staggered keyboard, like Crowboard or absolem.
Using a non-split keyboard, I can just use one microcontroller, and it simplify the design.
This microcontroller is a crystal-less USB 2.0 controller, and it is embeded with serial resistors for USB_DP/USB_DM
and a pull-up resistor for USB_DP, so it reduced the part count and simplify the trace routing.
This keyboard uses SMD components, except the type-c connector, so it came almost finished from the factory with PCB assembly service.
I use JLCPCB, so the part number shall be changed if use otherwise.
- BOM: pteropus BOM.csv
- Component position: pteropus-bottom-pos.csv