4 layers234 × 84 mm
Main panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
234 parts3kApache-2.0
2 layers238.9 × 99.1 mm
Type A
Armaan240/Type-A4rgb split keyboard !!
- Size
- 238.9 × 99.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 165
- Nets
- 106
- Pads
- 606
- Tracks, vias
- 2,731, 287
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 2 Jul 2026
- Updated
- 23 Jul 2026
Overview
Type A is an open-source printed circuit board by Armaan240, from the Armaan240/Type-A repository on GitHub. It is a 2-layer board of 238.9 × 99.1 mm with 165 parts on 106 nets, routed with 2,731 tracks and 287 vias.
It is built around the SK6812MINI-E. Its parts include 80 diodes, 40 capacitors, 40 switches and 2 ICs. It belongs with the keyboards and input boards of this library.
Main components
1README
README.mdType-A
so yah this is my split mechanical keyboard build i went with a split cuz i feel it could help make my posture correct , its a 3X6 layout with two extra thumb keys per side (so 4X5 matrix internally to keep one GPIO free for the TRS jack). i wanted it compact and sleek so no big old pico here , went with the seeed studio XIAO RP2040 running KMK firmware , it has 11 pins which is just enough for my thingi (10 for keys , 1 for DIN). its fully backlit with SK6812 mini-e leds under the keys for that proper glow effect , 20 leds per side (40 total) , and each led has its own 0.1uF (100nf) decoupling cap right next to it to keep the current stable and the rgb safe from a burst of current !! diodes on every switch to avoid ghosting. two halves connect over a TRS jack. case is a minimal integrated mount design with m2 screws and fillets for a softer look
Where i can find Assembly ?
yup since theres no f3z file in the repo (curruntly have the derived case from assembly in the form of stl and step ), cuz of the size limit so you can find all the files like f3z , step , stl , assembly in the following link https://a360.co/3RwVUDl https://a360.co/4eYcRzC
Renders
Cad
BOM
| Qty | Component | Notes | Price | Buy Link |
|---|---|---|---|---|
| 2 | Seeed Studio XIAO RP2040 | one per half, runs KMK | $11.6 | https://thinkrobotics.com/products/seeed-studio-xiao-rp2040?variant=47933480173885&country=IN¤cy=INR |
| 40 | Mechanical switches | 3X6 + 2 thumb keys per side | $5 | https://www.amazon.in/Keyboard-Switches-Dust-Proof-Keycap-Puller/dp/B0GZVJZP6V/ref=pd_rhf_se_s_pd_sbs_rvi_d_sccl_2_4/523-8533341-7350922?psc=1 |
| 40 | Keycaps | one per switch | $9 | https://meckeys.com/shop/accessories/keyboard-accessories/keycaps/blank/blank-dsa-keycaps-1u/ |
| 40 | 1N4148 diodes | one per switch, anti-ghosting, back mounted | $0.55 | https://robu.in/product/1n4148-1w-zener-diode-pack-of-50/ |
| 40 | SK6812 mini-e RGB leds | 20 per side, back mounted under keys for backlight | $13 | https://www.desertcart.in/products/653509650-50pcs-sk6812-mini-e-rgb-similar-with-ws2812b-sk6812-3228?source=search |
| 40 | 0.1uF (100nF) SMD capacitors | decoupling, one per led i realised i had wrong package :( | $1.2 | https://sharvielectronics.com/product/0-1uf-100nf-10v-capacitor-0805-pack-of-10/ |
| 2 | TRS jack (PJ-320A style) | connects the two halves | Locally Sourced | - |
| 1 | TRS cable | to link both halves | - | - |
| ~8 | M2 screws | integrated mount case | - | - |
| 2 | Custom PCB | 3X6 layout, mouse bites 3mm | $15 | Jlc PCB |
| 2 | Custom case (3D printed) | minimal integrated mount, 4mm walls, fillets | - | 3D printed |
TOTAL ~ $39
(i didnt included the cost of PCB , because i will handwiring it , if needed i can afford it :P )
Parts
165| Qty | Value | Footprint | References |
|---|---|---|---|
| 40 | C | Capacitor_SMD:C_0805_2012Metric | C1, C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23 +24 |
| 40 | D | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D44 +24 |
| 40 | SK6812MINI-E | LED_SMD:LED_SK6812MINI-E_3.2x2.8mm_P1.5mm_ReverseMount | D21, D22, D23, D24, D25, D26, D27, D28, D29, D30, D31, D32, D33, D34, D35, D36 +24 |
| 40 | SW_Push | Library:SW_Cherry_MX_1.00u_PCB 3d | SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +24 |
| 3 | VAL** | Mouse Bite:mouse-bite-3mm-slot | mouse-bite-1, mouse-bite-2, mouse-bite-3 |
| 2 | MOUDLE-SEEEDUINO-XIAO | Seed Studio:XIAO-RP2040-DIP | U1, U2 |
Questions
How big is the Type A PCB?
It measures 238.9 × 99.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Type A use?
165 parts, built around the SK6812MINI-E. 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 Type A KiCad files?
From the Armaan240/Type-A repository on GitHub, at the commit this page was made from: the board is CAD/TYPE A.kicad_pcb and its schematic CAD/TYPE A.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Type A design in my own project?
Its repository states no licence, so its author keeps all rights: ask Armaan240 before reusing the design.
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