Haori36
penk·Haori36·kicad/haori36.kicad_pcb
About the Haori36 PCB
Haori36 is an open source RP2040/RP2350 PCB design by penk, published on GitHub under the MIT license. It is a 2-layer board measuring 204.3 × 68 mm, with 75 components from 4 distinct parts.
Its main chip is the RP2040_Zero, from the RP2040/RP2350 family. By type, the board carries 37 switches, 37 diodes and 1 IC.
It belongs with the keyboards designs in this gallery.
From the project
36-key monoblock split ortho keyboard
Low-pro 36-key hot-swappable monoblock split ortho keyboard with optional Pimoroni trackball support.
- Use the gerber files in the production/ folder. - Optionally one can utilize the BOM and CPL files with a PCBA service to avoid manually soldering SMD diodes, which can be challenging to solder by hand. All components are soldered to the bottom side of the board.

Main components on the Haori36
Haori36 bill of materials (BOM)
75 components, 4 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | RP2040_Zero | RP2040_Zero | U1 |
| 36 | Keyswitch | SW_choc_v1_HS_1u | S1, S2, S3, S4, S5, S6, S7, S8 +28 |
| 1 | Trackball_Choc_Combi | trackball_choc_combi | SW1 |
| 37 | Diode | Diode_SOD-123 | D1, D2, D3, D4, D5, D6, D7, D8 +29 |
Haori36 design files
The KiCad project lives in the penk/Haori36 repository on GitHub; these links point at the commit this page was built from.
- Layoutkicad/haori36.kicad_pcb
- Schematickicad/haori36.kicad_sch
- BOMproduction/BOM.csv
Haori36: common questions
What microcontroller does the Haori36 use?
The Haori36 is built around the RP2040_Zero, from the RP2040/RP2350 family.
How big is the Haori36 PCB?
The Haori36 measures 204.3 × 68 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Haori36?
75 components, from 4 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Haori36 design files?
From the penk/Haori36 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Haori36 design in my own project?
Yes, under the terms of its MIT license, which penk chose for the repository.
Can I test firmware for the Haori36 without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.
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