Ukiha
e3w2q·ukiha-keyboard·pcb/ukiha.kicad_pcb
About the Ukiha PCB
Ukiha is an open source AVR/Arduino PCB design by e3w2q, published on GitHub under the MIT license. It is a 2-layer board measuring 200 × 88 mm, with 125 components from 4 distinct parts.
Its main chip is the ProMicro/BLEMicroPro, from the AVR/Arduino family. By type, the board carries 63 switches, 60 diodes, 1 IC and 1 connector.
It belongs with the keyboards designs in this gallery.
From the project
small key pitch 5x12 ortholinear keyboard

Main components on the Ukiha
Ukiha bill of materials (BOM)
125 components, 4 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ProMicro/BLEMicroPro | ArduinoProMicro_ConThrough | U1 |
| 1 | Conn_01x03 | StripLED_rev2 | J1 |
| 63 | SW_Push | CherryMX_MidHeight_16mm_rev2 | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +55 |
| 60 | D | diode_SMD | D1, D2, D3, D4, D5, D6, D7, D8 +52 |
Ukiha design files
The KiCad project lives in the e3w2q/ukiha-keyboard repository on GitHub; these links point at the commit this page was built from.
- Layoutpcb/ukiha.kicad_pcb
Ukiha: common questions
What microcontroller does the Ukiha use?
The Ukiha is built around the ProMicro/BLEMicroPro, from the AVR/Arduino family.
How big is the Ukiha PCB?
The Ukiha measures 200 × 88 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Ukiha?
125 components, from 4 distinct parts. The full bill of materials is listed on this page.
Where can I download the Ukiha design files?
From the e3w2q/ukiha-keyboard repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Ukiha design in my own project?
Yes, under the terms of its MIT license, which e3w2q chose for the repository.
Can I test firmware for the Ukiha without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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