2 layers55 × 80 mm
Board esp32 v2
sudomesh/disaster-radio
A (paused) work-in-progress long-range, low-bandwidth wireless disaster recovery mesh network powered by the sun.
101 parts1.1k
2 layers278.2 × 89.7 mm
Split Keyboard
Sadrita404/Split-KeyboardThis split keyboard is basically fixes everything annoying about standard typing. We took the logic of an ortholinear grid (where everything is predictable) and mashed it together with a column stagger that actually matches how long your fingers are. For me this type of form factor keyboard is good for long hours of typing
- Size
- 278.2 × 89.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 101
- Nets
- 76
- Pads
- 506
- Tracks, vias
- 556, 71
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 21 Apr 2026
- Updated
- 17 Jun 2026
Overview
Split Keyboard is an open-source printed circuit board by Sadrita404, from the Sadrita404/Split-Keyboard repository on GitHub, published under the MIT licence. It is a 2-layer board of 278.2 × 89.7 mm with 101 parts on 76 nets, routed with 556 tracks and 71 vias.
Its parts include 48 diodes, 48 switches and 2 ICs. It belongs with the keyboards and input boards and the nRF52 and nRF5x boards of this library.
README
README.md| Title | Split-Keyboard |
|---|---|
| Author | Sadrita Neogi |
Overview
This split keyboard is basically fixes everything annoying about standard typing. We took the logic of an ortholinear grid (where everything is predictable) and mashed it together with a column stagger that actually matches how long your fingers are. For me this type of form factor keyboard is good for long hours of typing
Project Inspiration
I want to make an Keyboadr which is like this (I just draw it out of my imagination )
PCB
For getting started I have choose Kicad for designing the PCB also the schematic
Case
For the Case I have choose Fusion 360 for this project
Top Plate
After Assembly
Assembly Instructions :-
-
First we need to get the PCB and then startrd soldering the Schottky Diodes to all the pads of the PCB .
-
After that we need to add the SeeedStudio XIAO RA4M1 to the designated spot on the PCb .
-
After that we will need to connect the SeeedStudio XIAO RA4M1 to the PC and upload the code given in the FIRMWARE and use Arduino IDE to upload the code .
-
Then will will solder the battery to the designated spot on the PCb .
-
After that we will take our 3d Printed PCB Case and and screw the pcb to the case .
-
Then we will add the 3d Printed top Plate to the Case and fix it.
-
After that we will put the 5pin Switches in the PCb gently , to all the Places.
-
And then we will add the Key Caps to the Switches.
-
The last step connect the Keyboard to the PC and start using it...
Lapse For Poster Design
Bill Of Material (BOM)
| Name | Purpose | Qty | Total Price (USD) | Component Link | Distributor |
|---|---|---|---|---|---|
| 3.7V 500mAh 1S LiPo Battery | For Powering up the keyboard | 2 | $5.57 | Link | Robu.in |
| PCB | PCB For making the keyboard and adding the switches | 1 | $20 | Link | All PCB |
| Keycaps | For attaching it to the switches | 1 | $16.00 | Link | Stackskb.com |
| Hot Swap Sockets(10) | For Connecting the Switch with the PCB | 5 | $6.19 | Link | Neomacro.in |
| 5 Pin Switches(10) | For the PCB where I need to place the Switch | 5 | $18.80 | Link | Neomacro.in |
| Single row header Pin | For connecting the Seeed Studio with the pcb | 2 | $0.19 | Link | Robu.in |
| Schottky Diodes | For PCB ( registering the value of the key press) | 50 | $1.16 | Link | Robu.in |
| SeeedStudio XIAO RA4M1 | For Controlling the PCB | 2 | $13.27 | Link | Robu.in |
| Total | $95.74 | ||||
| Round Off Total (USD) | $100 |
For 3d Printing I have use Legion where the cost is included in the Shipping
| Tax (USD) | Shipping (USD) |
|---|---|
| $6.12 | $6.48 |
| Round Off Total (USD) | $100 |
Project Under Hack Club
Parts
101| Qty | Value | Footprint | References |
|---|---|---|---|
| 48 | D | Diode_SMD:D_SOD-123 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +32 |
| 48 | SW_Push_45deg | KEYS:SW_Hotswap_Kailh_MX | SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +32 |
| 3 | MouseBite | Panelization:MouseBite-Slot_2.0x2.0mm_outset_D0.5mm_P0.85mm_3h | B1, B2, B3 |
| 2 | XIAO-nRF52840-DIP | XIAO:XIAO-nRF52840-DIP | U1, U2 |
Questions
How big is the Split Keyboard PCB?
It measures 278.2 × 89.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Split Keyboard use?
101 parts. 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 Split Keyboard KiCad files?
From the Sadrita404/Split-Keyboard repository on GitHub, at the commit this page was made from: the board is PCB/Split-Keyboard.kicad_pcb and its schematic PCB/Right Sheet.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Split Keyboard design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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