2 layers208.8 × 396.9 mm
Ferris
pierrechevalier83/ferris
A low profile split keyboard designed to satisfy one single use case elegantly
145 parts1.3k
2 layers124.6 × 130.5 mm
Custom Hackboard
FabioCastroMorffi/Raw-SplitRaw Split is a wired 36 key split keyboard made with 3 PCBs and powered by an RP pico 2040
- Size
- 124.6 × 130.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 46
- Nets
- 52
- Pads
- 228
- Tracks, vias
- 306, 9
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 5 Jun 2025
- Updated
- 5 Jul 2025
Overview
Custom Hackboard is an open-source printed circuit board by FabioCastroMorffi, from the FabioCastroMorffi/Raw-Split repository on GitHub. It is a 2-layer board of 124.6 × 130.5 mm with 46 parts on 52 nets, routed with 306 tracks and 9 vias.
It is built around the PJ-320A. Its parts include 18 diodes, 18 switches, 1 IC and 1 connector. It belongs with the keyboards and input boards and the RP2040 boards of this library.
Main components
1README
README.mdRaw Split
Overview
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.
Motivation
After finishing my design for Hackpad, which was an introduction to PCB Design and 3D modelling, I was confident I could go build a bigger project in a more efficient manner but I was completely wrong. I got sent to the Valley of Stupidity earlier than expected.
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 abhorred 3D modelling of the top/side and bottom so on the Raw Split I decided to only use PCBs for the full design; the raw aesthetic of the build is where the name comes from -- I'm not very creative with names.
PCBs
Center
Top
Bottom
CAD
Thank you Onshape for being so easy to work with (shame on the horrible experience that is Fusion360's online services for students). I really need to emphasize how much better OnShape is on web, because the initial horrible experience I had with Fusion Online or trying to install a Linux version of Fusion was horrible and made me waste a lot of time.
Here's the overview of the right split:
The total height of the keyboard will be 24.8 mm. The three PCBs measure 1.6 mm in height, the small standoff will have a height of 4 mm while the big one will have a size 6 mm. Finally the height from the top plate to the top of the keycap is approximally 10 mm.
BOM
| Quantity | Item | Price (CAD) | Vendor | Link |
|---|---|---|---|---|
| 2 | RP Pico 2040 Green with Pin | 6.42 | Aliexpress | Link |
| 1 | 40 PCS kailh box V2 (linear switches) | 1.38(with welcome deal) | Aliexpress | Link |
| 1 | 100 PCS Through Hole Diodes (1N4148) | 2.80 | Aliexpress | Link |
| 2 | 0.91 Inch 128x32 Oled Display | 5.00 | Aliexpress | Link |
| 2 | 20 pcs Blank DSA Keycaps | 12.5 | Aliexpress | link |
| 1 | 10 PCS PJ-320A Jack Receptacle | 1.58 | Aliexpress | Link |
| 1 | 20 pcs SW-Push 6x6x4.3mm | 0.26 | Aliexpress | Link |
| 1 | 50 pcs Brass Female to Female Standoffs M2x3mm | 2.72 | Aliexpress | Link |
| 1 | 50 pcs Nylon Female to Female Standoffs M2x6mm | 1.28 | Aliexpress | Link |
| 2 | 50 pcs M2 5mm and M2 10 mm | 4.5 | Aliexpress | Link |
| 1 | Antislip Circular Pads 2mm | 2.97 | Aliexpress | Link |
| 1 | PCB Manufacturing Center | 13.04 (without coupon) | JLCPCB | |
| 1 | PCB Manufacturing Top | 12.64 (without coupon) | JLCPCB | |
| 1 | PCB Manufacturing Bottom | 12.50 (without coupon) | JLCPCB |
| Total (CAD, after taxes and after 20$ JLcPCB Coupon) | Total (USD, after taxes and after 20$ JLcPCB Coupon) |
|---|---|
| 69 | 50.69 |
Parts
46| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D10, D11, D12, D13, D14, D15, D16, D17, D18 +2 |
| 16 | SW_Push_45deg | Library:Cherry MX 1u | SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18 |
| 3 | , , | ||
| 2 | Key | Library:Cherry MX 1u | SW1, SW2 |
| 2 | LOGO | Library:hackclub | , |
| 1 | |||
| 1 | Oled Screen 0.91 inch | oled:SSD1306-0.91-OLED-4pin-128x32 | J1 |
| 1 | PJ-320A | RP_pico:PJ-320A | U3 |
| 1 | RaspberryPi_Pico | Library:RaspberryPi_Pico_Common_Unspecified | A1 |
| 1 | Reset | Button_Switch_THT:SW_PUSH_6mm_H5mm | Reset |
Questions
How big is the Custom Hackboard PCB?
It measures 124.6 × 130.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Custom Hackboard use?
46 parts, built around the PJ-320A. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Custom Hackboard KiCad files?
From the FabioCastroMorffi/Raw-Split repository on GitHub, at the commit this page was made from: the board is PCB/raw split center/custom_Hackboard.kicad_pcb and its schematic PCB/raw split bottom/raw split bottom.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Custom Hackboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask FabioCastroMorffi before reusing the design.
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