Custom Hackboard
FabioCastroMorffi·Raw-Split·PCB/raw split center/custom_Hackboard.kicad_pcb
About the Custom Hackboard PCB
Custom Hackboard is an open source RP2040/RP2350 PCB design by FabioCastroMorffi, published on GitHub. It is a 2-layer board measuring 124.6 × 130.5 mm, with 39 components from 6 distinct parts.
Its main chip is the RaspberryPi_Pico, from the RP2040/RP2350 family. Other key parts include the PJ-320A. By type, the board carries 18 switches, 18 diodes, 1 IC, 1 module and 1 connector.
It belongs with the keyboards and displays & leds designs in this gallery.
From the project
Raw Split is a wired 36 key split keyboard made with 3 PCBs and powered by an RP pico 2040
Raw Split is a wired 36 key split keyboard made with 3 PCB layers and powered by an RP pico 2040 on each side. I'm using the Miryoku ZMK as the layout and I decided to go for a smaller split keyboard for two main reasons: I want it to be portable, mainly so I can use it in class, and I wanted to be under (or very close to) the 50$ mark.
I had an initial idea with a Split Keyboard that would have magnetic sides but I wasn't proud of the design I came up with (and it wasnt printable) so I decided to scrap it up and do it again with a different idea. The change was mainly on the fact that I…

Main components on the Custom Hackboard
Custom Hackboard bill of materials (BOM)
39 components, 6 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | PJ-320A | PJ-320A | U3 |
| 1 | RaspberryPi_Pico | RaspberryPi_Pico_Common_Unspecified | A1 |
| 1 | Oled Screen 0.91 inch | SSD1306-0.91-OLED-4pin-128x32 | J1 |
| 2 | Key | Cherry MX 1u | SW1, SW2 |
| 16 | SW_Push_45deg | Cherry MX 1u | SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10 +8 |
| 18 | 1N4148 | D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8 +10 |
Custom Hackboard design files
The KiCad project lives in the FabioCastroMorffi/Raw-Split repository on GitHub; these links point at the commit this page was built from.
Custom Hackboard: common questions
What microcontroller does the Custom Hackboard use?
The Custom Hackboard is built around the RaspberryPi_Pico, from the RP2040/RP2350 family.
How big is the Custom Hackboard PCB?
The Custom Hackboard measures 124.6 × 130.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Custom Hackboard?
39 components, from 6 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 Custom Hackboard design files?
From the FabioCastroMorffi/Raw-Split 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 Custom Hackboard design in my own project?
The repository has no license, so all rights stay with FabioCastroMorffi. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Custom Hackboard 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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