4 layers234 × 84 mm
Main panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
234 parts3kApache-2.0
2 layers99 × 61 mm
Arcpad
jormy/arcpadarcpad is a 11 key macropad with a rotary enccoder and a light bar.
- Size
- 99 × 61 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 44
- Nets
- 43
- Pads
- 168
- Tracks, vias
- 421, 70
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 17 Oct 2026
- Updated
- 28 Oct 2026
Overview
Arcpad is an open-source printed circuit board by jormy, from the jormy/arcpad repository on GitHub. It is a 2-layer board of 99 × 61 mm with 44 parts on 43 nets, routed with 421 tracks and 70 vias.
It is built around the SK6812MINI-E. Its parts include 28 diodes, 12 switches, 1 capacitor, 1 resistor and 1 IC.
Main components
1README
README.mdarcpad
arcpad is a 11 key macropad with a rotary enccoder and a light bar.
features
- snap fit 3d printed case with no screws needed
- 11 keys in a 4x3 layout
- EC11 rotary encoder
- light bar composed of 5 LEDS that can be programmed to show whatever you want (e.g. volume, brightness)
- QMK firmware with VIA support (not tested yet)
CAD model
I wanted to keep the design really compact, so I decided not to use screws and secured the PCB with friction instead.
The PCB is sandwiched between a base and a top plate, the PCB is secured to the top plate when the switches are attached, and the top plate secures to the base with some neat snap fit geometry
All parts of the model are printable with no supports, with exception of the USB-C opening in the base.
PCB
here are the schematic andn PCB designs, both made in Kicad:
Firmware
This macropad uses QMK firmware. It has VIA support, though I will need to test it when I make the physical macropad.
BOM
everything you need to make this macropad
- 11x Cherry MX Switches
- 11x DSA Keycaps
- 12x through-hole 1N4148 Diodes
- 16x SK6812 MINI-E LEDs
- 1x EC11 Rotary encoder
- 1x XIAO RP2040
- 1x 100 µF capacitor
- 1x 330Ω resistor
- 1x Case (3 3d printed parts)
Parts
44| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | SK6812MINI-E | footprints:SK6812MINI-E_fixed | LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, LED10, LED11, LED12, LED13, LED14, LED15, LED16 |
| 12 | D | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D0, D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11 |
| 11 | SW_Push_45deg | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11 |
| 1 | 100u | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C1 |
| 1 | 330 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | LOGO | design:logo | G*** |
| 1 | MOUDLE-SEEEDUINO-XIAO | footprints:XIAO-Generic-Hybrid-14P-2.54-21X17.8MM | U1 |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW0 |
Questions
How big is the Arcpad PCB?
It measures 99 × 61 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Arcpad use?
44 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 Arcpad KiCad files?
From the jormy/arcpad repository on GitHub, at the commit this page was made from: the board is pcb/arcpad.kicad_pcb and its schematic pcb/arcpad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Arcpad design in my own project?
Its repository states no licence, so its author keeps all rights: ask jormy before reusing the design.
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