4 layers99 × 53.3 mm
PSLab
fossasia/pslab-hardware
PSLab Hardware Design and Schematics https://pslab.io
199 parts1.7kApache-2.0
2 layers94 × 90 mm
Floppy
SuperFola/floppy19Floppy drive format 34 keys split keyboard
- Size
- 94 × 90 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 46
- Nets
- 41
- Pads
- 511
- Tracks, vias
- 460, 45
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 27 Oct 2024
- Updated
- 28 Jul 2025
Overview
Floppy is an open-source printed circuit board by SuperFola, from the SuperFola/floppy repository on GitHub, published under the MIT licence. It is a 2-layer board of 94 × 90 mm with 46 parts on 41 nets, routed with 460 tracks and 45 vias.
It is built around the 1N4148W. Its parts include 17 diodes, 17 switches and 1 IC. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
README.mdFloppy keyboard
A 90x94mm hotswap 34 keys split choc v1 keyboard, in the footprint of a floppy disk.
Build guide
Assembling the floppy keyboard (lexp.lt)
Ordering
Gerbers to upload are under gerbers/.
Recommandations:
- top plate: 1.2mm
- back plate: 1.6mm
- pcb: 1.6mm
![NOTE] Remember to remove the order number on the top plate and back plate. On the PCB, there is a text that need to be used for the order number: "JLCJLCJLCJLC".
Components for one keyboard
- 2 pro-micro compatible MCU (eg Liatris, Nice!Nano)
- 34 hotswap kailh choc v1 socket (PG1350)
- 34 choc v1 switches & keycaps
- 34 SMD diodes
- 2 RJ11 4P4C connectors (18mm x 11mm)
- 1 RJ11 4P4C cable that needs to be straight (when put side to side, the cables inside should match), otherwise you will end up swapping VCC and GND, and putting the data pin to GND on the other half
More images
Parts
46| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | 1N4148W | floppy:D3_SMD | D13, D13, D13, D13, D13, D13, D13, D13, D13, D13, D13, D13, D13, D13, D13, D13 +1 |
| 17 | Choc | arkenswoop:Kailh-pg1350-socket-reversible | SW1, SW1, SW1, SW1, SW1, SW1, SW1, SW1, SW1, SW1, SW1, SW1, SW1, SW1, SW1, SW1 +1 |
| 2 | LOGO | LOGO | G***, G*** |
| 1 | Battery | arkenswoop:Battery_pads_reversible | BT1 |
| 1 | OLED | arkenswoop:OLED_jumpers | O1 |
| 1 | Power | arkenswoop:Power | PSW1 |
| 1 | ProMicro | arkenswoop:ProMicro_jumpers | U1 |
| 1 | Reset | arkenswoop:Reset | RSW1 |
The 41 most common of 46 parts.
Questions
How big is the Floppy PCB?
It measures 94 × 90 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Floppy use?
46 parts, built around the 1N4148W. 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 Floppy KiCad files?
From the SuperFola/floppy repository on GitHub, at the commit this page was made from: the board is pcbs/keyboard/floppy.kicad_pcb and its schematic pcbs/keyboard/floppy.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Floppy design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
Similar boards
- 2 layers208.8 × 396.9 mm
Ferris
pierrechevalier83/ferris
A low profile split keyboard designed to satisfy one single use case elegantly
145 parts1.3k - 2 layers285.5 × 95 mm
- 4 layers95.6 × 73.6 mm
- 2 layers141.5 × 83 mm
Rolio
MickiusMousius/Rolio46Keyboard
A split wireless keyboard based on the Corne and Sofle
110 parts236MIT - 6 layers160 × 100 mm
- 2 layers99.1 × 90.7 mm
Bgkeeb
sadekbaroudi/bgkeeb
This is a reversible 100mm x 100mm pcb with support for mx or choc switches (no hotswap), per key led, rotary encoders, and exposes the SDA/SCL/GND/VCC lines in the form of the pimoroni trackball pins (meaning you can…
108 parts108 - 2 layers229.8 × 102.6 mm
