2 layers117.3 × 54.5 mm
2 layers135 × 82 mm
Fuse
bettsmatt/fuse1A split, 60%, wireless, low profile, choc spaced, magnetic keyboard.
- Size
- 135 × 82 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 69
- Nets
- 58
- Pads
- 277
- Tracks, vias
- 467, 0
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 6 Mar 2022
- Updated
- 23 Apr 2022
Overview
Fuse is an open-source printed circuit board by bettsmatt, from the bettsmatt/fuse repository on GitHub, published under the MIT licence. It is a 2-layer board of 135 × 82 mm with 69 parts on 58 nets, routed with 467 tracks and 0 vias.
Its parts include 30 diodes, 30 switches and 3 ICs. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.
README
README.mdFuse
A WIP split, 60%, wireless, low profile, choc spaced, magnetic keyboard.
Design Notes
- 3D printed case with embedded magnets to allow the two split boards to snap together into a single board.
- Switches must be soldered as the footprint of hotswap sockets would space the switches too far apart.
- Through hole diode matrix as they look badass and SMD parts are a pain to solder.
- Wireless (no TRRS), Nice!Nano with 3.7v batteries. Power Switch on PCB.
- PCBs are reversible for the left / right hand. Nice!Nano pins mirrored in ZMK firmware.
PCB
Parts
69| Qty | Value | Footprint | References |
|---|---|---|---|
| 30 | D | fuse-kbd:R | D0, D1, D2, D3, D10, D11, D12, D13, D14, D15, D20, D21, D22, D23, D24, D25 +14 |
| 25 | SW_PUSH | fuse-kbd:Choc_Reverse | SW1, SW2, SW3, SW11, SW12, SW13, SW14, SW15, SW21, SW22, SW23, SW24, SW25, SW31, SW32, SW33 +9 |
| 5 | SW_PUSH | fuse-kbd:Choc_Reverse_15 | SW0, SW10, SW20, SW30, SW45 |
| 2 | BatteryHole | fuse-kbd:BatteryPins | U3, U4 |
| 1 | ProMicro | fuse-kbd:Nice!Nano | U1 |
| 1 | SW_PUSH | fuse-kbd:Reset | Reset1 |
| 1 | SW_PUSH | fuse-kbd:EG1218 | Power1 |
The 65 most common of 69 parts.
Questions
How big is the Fuse PCB?
It measures 135 × 82 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Fuse use?
69 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 Fuse KiCad files?
From the bettsmatt/fuse repository on GitHub, at the commit this page was made from: the board is pcb/fuse.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Fuse 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).
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