2 layers189.5 × 204.9 mm
SmartSpin2k Panelized
doudar/SmartSpin2k
Transform your spin bike into a Smart Trainer!
749 parts292GPL-2.0
2 layers283.4 × 105.2 mm
Pepuino Split-44
pipejosh/Pepuino-Split-44A wireless split keyboard with 44 keys!
- Size
- 283.4 × 105.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 156
- Nets
- 150
- Pads
- 672
- Tracks, vias
- 1,231, 150
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 16 Mar 2026
- Updated
- 1 Jul 2026
Overview
Pepuino Split-44 is an open-source printed circuit board by pipejosh, from the pipejosh/Pepuino-Split-44 repository on GitHub. It is a 2-layer board of 283.4 × 105.2 mm with 156 parts on 150 nets, routed with 1,231 tracks and 150 vias.
It is built around the EG1218. Its parts include 88 diodes, 48 switches, 4 resistors, 2 ICs and 2 connectors. It belongs with the keyboards and input boards and the nRF52 and nRF5x boards of this library.
Main components
1README
README.mdPepuino Split 44
This is a custom wireless keyboard inpired in the corne and sofle layout so my wrists arent crippled anymore! A 44 keys keybaord wireless powered by a super mini (the cheapest BT microcontroller I could find) its wirelessssssss btw! Featuring really cool art and bluetooth connectivity!
Images
IRL BUILD!
Render
Case
PCB
Schematic
BOM
Components List
| Name | Purpose | Quantity | Total Cost (USD) | Distributor | Link |
|---|---|---|---|---|---|
| m2 5mm standoff | Assembly | 50 | $2.21 | AliExpress | Link |
| m2 2mm screw | Assembly | 50 | $1.79 | AliExpress | Link |
| THT 4.7K resistor | Pull-up resistor | 20 | $1.77 | AliExpress | Link |
| 0805 2M Resistor | Voltage divider | 100 | $1.55 | AliExpress | Link |
| 0805 820K Resistor | Voltage divider | 100 | $1.79 | AliExpress | Link |
| Battery 3.7V 110mAh | Keyboard power | 2 | $8.87 | AliExpress | Link |
| MSK-12D19 | Slide switch | 20 | $2.05 | AliExpress | Link |
| Switches | Bao Bao Dragon | 45 | $10.95 | AliExpress | Link |
| Reset Button | Reset button | 10 | $2.70 | AliExpress | Link |
| SK6812 MINI-E RGB | RGB Lighting | 50 | $3.86 | AliExpress | Link |
| 1N4148W T4 SOD-123 | Diodes | 100 | $3.18 | AliExpress | Link |
| Hotswap sockets | Easy replace switches | 50 | $10.13 | AliExpress | Link |
| OLED 0.91" | Display | 2 | $5.52 | AliExpress | Link |
| Super mini NRF52840 | Microcontroller | 2 | $5.30 | AliExpress | Link |
| Components Subtotal | $61.67 |
PCB Manufacturing
| Name | Purpose | Quantity | Manufacturing | Shipping | Total Cost (USD) | Distributor |
|---|---|---|---|---|---|---|
| PCB | The main circuit board | 5 | $20.00 | $13.26 | $33.26 | JLCPCB |
Grand Total Project Estimate Cost: $94.93
Parts
156| Qty | Value | Footprint | References |
|---|---|---|---|
| 44 | Switch | ScottoKeebs_Hotswap:Hotswap_MX_1.00u | SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +28 |
| 44 | YS-SK6812MINI-E | kbd:YS-SK6812MINI-E | LED1, LED2, LED10, LED11, LED12, LED13, LED14, LED15, LED16, LED17, LED18, LED19, LED20, LED21, LED22, LED23 +28 |
| 44 | ~ | ScottoKeebs_Components:Diode_SOD-123 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +28 |
| 4 | DNP | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | DNP1, DNP2, DNP3, DNP4 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 4 | TestPoint | TestPoint:TestPoint_Pad_D2.5mm | TP1, TP2, TP3, TP4 |
| 2 | 2M | Resistor_SMD:R_0805_2012Metric | R2, R4 |
| 2 | 806K | Resistor_SMD:R_0805_2012Metric | R1, R3 |
| 2 | EG1218 | kbd_Parts:TGSW_MSK-12D19 | S1, S2 |
| 2 | OLED_128x32 | ScottoKeebs_Components:OLED_128x32 | J1, J2 |
| 2 | SuperMini nRF52840 | PCM_marbastlib-xp-promicroish:SuperMini_nRF52840_AH_USBup | U1, U2 |
| 2 | Switch | ScottoKeebs_Components:Button_MJTP1243 | SW45, SW46 |
Similar boards
- 2 layers147.9 × 104.8 mm
- 2 layers28.7 × 52.3 mm
Breadboard Power Supply
futureshocked/KLP4e_Breadboard-Power-Supply
This is the repository for the "4x8x8 LED Matric Clock" project.
19 parts141MIT - 2 layers184 × 114.8 mm
Poly555
oskitone/poly555
The POLY555 is a polyphonic, analog, square wave synth based on the 555 timer chip.
262 parts93 - 2 layers59.5 × 101 mm
Mouse
unknownusername504/WirelessMouse
A wireless mouse with open source pcb/schematic as well as drivers to come.
54 parts35GPL-3.0 - 2 layers55 × 86 mm
LED Matrix Display Badge
0xlama/ATtiny_LED_Matrix_Display_Badge
An ATtiny85 based badge size PCB that can display alphabets and numbers .
32 parts18MIT - 2 layers166.5 × 113.5 mm
- 2 layers181.4 × 179.8 mm
Rubber duckey
ajvizganapathy-pixel/FlipperZero-DIY-STM32WB55-NucleusDark
DIY Flipper Zero clone using STM32WB55CGU6 — KiCad PCB, Momentum firmware, 200+ apps, BadUSB scripts, wiring diagrams
37 parts10
Questions
How big is the Pepuino Split-44 PCB?
It measures 283.4 × 105.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pepuino Split-44 use?
156 parts, built around the EG1218. 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 Pepuino Split-44 KiCad files?
From the pipejosh/Pepuino-Split-44 repository on GitHub, at the commit this page was made from: the board is PCB/pepuinoSplit44.kicad_pcb and its schematic PCB/pepuinoSplit44.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pepuino Split-44 design in my own project?
Its repository states no licence, so its author keeps all rights: ask pipejosh before reusing the design.