2 layers44.5 × 46.9 mm
OSO SWAT B1-jig
joeycastillo/Sensor-Watch
A board replacement for the classic Casio F-91W wristwatch
31 parts2.1k
2 layers84 × 80 mm
Cardbrd
Tekbox12/Cardbrd1A 3 by 4 macropad with a rotary encoder and a reset button
- Size
- 84 × 80 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 31
- Nets
- 34
- Pads
- 203
- Tracks, vias
- 192, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 11 Oct 2026
- Updated
- 13 Oct 2026
Overview
Cardbrd is an open-source printed circuit board by Tekbox12, from the Tekbox12/Cardbrd repository on GitHub. It is a 2-layer board of 84 × 80 mm with 31 parts on 34 nets, routed with 192 tracks and 0 vias.
Its parts include 12 diodes and 12 switches. It belongs with the keyboards and input boards of this library.
README
README.mdCardBrd
12 key macro pad built using ergogen v4
Features
- QMK and VIA support
- 12 keys (4 rows 3 columns)
- rotary encoder with click
- reset button
Materials
- 1x Pro micro
- 1x ec11 rotary encoder
- 1x reset switch (smd, 4 pin, flat)
- 12x 1N4148 Switches (smd or through hole)
- 12x any(i think) 5 pin mx switches
- 4x M2 x 3mm L x 3.2mm threaded brass inserts
- 4x M2 Laptop style flathead screw
Firmware
My QMK fork OR Use the qmk files in the qmk folder
Parts
31| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | ComboDiode | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12 | |
| 12 | MX | S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12 | |
| 4 | MountingHole_2.2mm_M2_Pad_Via | _1, _2, _3, _4 | |
| 1 | rotary_encoder | ROT1 | |
| 1 | E73:SW_TACT_ALPS_SKQGABE010 | B1 | |
| 1 | ProMicro | MCU1 |
Questions
How big is the Cardbrd PCB?
It measures 84 × 80 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Cardbrd use?
31 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 Cardbrd KiCad files?
From the Tekbox12/Cardbrd repository on GitHub, at the commit this page was made from: the board is pcb/CardBrd.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Cardbrd design in my own project?
Its repository states no licence, so its author keeps all rights: ask Tekbox12 before reusing the design.
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