4 layers234 × 84 mm
Main panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
234 parts3kApache-2.0
2 layers81 × 86.3 mm
Froskeys
frosetrain/froskeys19-key macropad
- Size
- 81 × 86.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 32
- Nets
- 34
- Pads
- 138
- Tracks, vias
- 335, 66
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 23 Jun 2025
- Updated
- 15 Mar 2026
Overview
Froskeys is an open-source printed circuit board by frosetrain, from the frosetrain/froskeys repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 81 × 86.3 mm with 32 parts on 34 nets, routed with 335 tracks and 66 vias.
It is built around the SK6812MINI-E. Its parts include 18 diodes, 10 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.mdFroskeys
A 9-key macropad that I created for my own use-cases. I wanted some more keys next to my keyboard to do things like push-to-talk and other macros. Since my mouse is on the right of my laptop, my macropad shall sit on the left of my laptop.
There is a column of keys on the right of the macropad, to easily press with my pinky while my left hand is on WASD.
There is a diagonal cutout on the bottom left, where I can rest my hand more easily.
Keys
- Control+Z (undo) and Control+Y (redo)
- Control+C (copy) and Control+V (paste), the only two keys I need
- Control+D (duplicate)
- F2 (rename)
- Play/pause
- Push-to-talk
fastfetch
Schematic
PCB
Case
| Top | Bottom |
|---|---|
 |  |
CAD render
Section analysis was a very useful feature
BOM
JLCPCB
- PCB
3D Printed
- Case
Components
- 1 × Seeed Studio XIAO RP2040
- 9 × 1N4148 Diode
- 1 × EC11 Rotary Encoder
- 1 × 0.91″ I²C OLED Display
- 9 × White XDA Profile PBT Keycaps
- 9 × SK6812 MINI-E LED
- 4 × M3×16mm screw
- 4 × M3×5mm×4mm heatset insert
- 9 × Gateron Baby Kangaroo 2.0
Parts
32| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8, D9 |
| 9 | MX | MX:MX-Solderable-1U | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9 |
| 9 | SK6812MINI-E | Keyboard Parts:MX_SK6812MINI-E_GOOD | LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9 |
| 1 | KiCad-Logo2_6mm_Copper | Symbol:KiCad-Logo2_6mm_Copper | KICAD |
| 1 | OLED | OLED:SSD1306-0.91-OLED-4pin-128x32 | J1 |
| 1 | OSHW-Logo_7.5x8mm_Copper | Symbol:OSHW-Logo_7.5x8mm_Copper | OSHW |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW10 |
| 1 | XIAO-RP2040-DIP | OPL:XIAO-RP2040-DIP | U1 |
Questions
How big is the Froskeys PCB?
It measures 81 × 86.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Froskeys use?
32 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 Froskeys KiCad files?
From the frosetrain/froskeys repository on GitHub, at the commit this page was made from: the board is pcb/froskeys.kicad_pcb and its schematic pcb/froskeys.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Froskeys design in my own project?
Its repository publishes it under the GPL-3.0 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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