2 layers216.9 × 86.8 mm
Sweepv2
davidphilipbarr/Sweep
Sweep - a small promicro based keyboard inspired by the Ferris.
51 parts2.1k
2 layers210.4 × 114.3 mm
Chouchou
dlip/chouchou2820 Key keyboard
- Size
- 210.4 × 114.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 51
- Nets
- 23
- Pads
- 358
- Tracks, vias
- 304, 0
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 17 Jul 2023
- Updated
- 7 Oct 2025
Overview
Chouchou is an open-source printed circuit board by dlip, from the dlip/chouchou repository on GitHub, published under the GPL-2.0 licence. It is a 2-layer board of 210.4 × 114.3 mm with 51 parts on 23 nets, routed with 304 tracks and 0 vias.
It belongs with the keyboards and input boards of this library.
README
README.mdChouchou Keyboard/Fight Pad
Chouchou (Japanese for butterfly) is a minimalist unibody keyboard designed to be used with the Taipo layout, but it also can be used as a pretty nice fighting gamepad.
It uses a cheap RP2040-Zero MCU and requires no diodes since the 20 edge pinouts it provides is the exact number of keys Taipo requires. It was created with Ergogen and KiCad. I designed it for my largish hands so if you have smaller hands its probably not going to be comfortable. I might make a more compact version in the future if people request it.
Fight Pad / Pin Layout
Build Your Own
Board
Parts
- Send the Gerber file to the PCB manufacturer of your choice
- 1 x RP2040-Zero
- 20 x low profile choc switches and keycaps. Since you're going to be doing a lot of combos, I recommend lighter switches. I use 25g light blue, but 35g pro red is not bad either. You can use 1.5U keycaps for the thumbs, the socket has been rotated 90 degrees to accomodate.
- (optional) 20 x kailh hotswap sockets
- (optional) RP2040-Zero headers
Firmware
- QMK
- Taipo Keyboard
- PC Gamepad
- Qwerty/WASD Layout
- KMK
- Taipo Keyboard
- Python based with hot reloading so good if you tinker a lot with your layout
- GP2040-CE
- PC or console gamepad
- Note: PS5 requires an adapter like the Wingman FGC
Instructions
- Solder the RP2040-Zero to the board either directly or using the headers you purchased
- Build and flash the firmware
- You can test the keyboard at this point by connecting the hotswap pads with some metal tweezers before continuing
- Solder the kalih hotswap sockets if purchased or solder the switches directly the board otherwise
- Insert the switches into the hotswap sockets if necessary
- Add your keycaps
Case
Issue: The case gets blocked by one of the screw mounts when using hotswap sockets, its easy enough to cut the side a bit with a knife though.
Parts
The screws/nuts are optional, its a pretty tight fit so you might not need them.
- 3D print the case.stl file
- (optional) 8 x Knurled Insert Nuts (M2 x 3mm Length x 3.2mm OD) example
- (optional) 8 x M2 3mm flat screws example
Instructions
- Use a soldering iron to melt the insert nuts into the holes in the case
- Screw the board to the case
Attribution
Butterfly image by Freepik
Parts
51| Qty | Value | Footprint | References |
|---|---|---|---|
| 40 | PG1350 | S1, S2, S10, S11, S12, S13, S14, S15, S16, S17, S18, S19, S20, S21, S22, S23 +24 | |
| 8 | MountingHole_2.2mm_M2_Pad_Via | _1, _2, _3, _4, _5, _6, _7, _8 | |
| 1 | RP2040-Zero | RP2040Zero1 | |
| 1 | LOGO | images:butterfly_left | |
| 1 | LOGO | images:butterfly_right |
Questions
How big is the Chouchou PCB?
It measures 210.4 × 114.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Chouchou use?
51 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 Chouchou KiCad files?
From the dlip/chouchou repository on GitHub, at the commit this page was made from: the board is kicad/chouchou.kicad_pcb and its schematic kicad/chouchou.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Chouchou design in my own project?
Its repository publishes it under the GPL-2.0 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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