2 layers228.6 × 100 mm
Mongus48
ChrisChrisLoLo/beyblock20
The magnetic, modular, 20-key macropad that can join together to form an ortholinear board
124 parts335GPL-3.0
2 layers239.5 × 92.5 mm
Mu kb
bkienzle3/mu_splitkbMu Split Keyboard - 36-key columnar staggered split keyboard
- Size
- 239.5 × 92.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 80
- Nets
- 80
- Pads
- 444
- Tracks, vias
- 879, 205
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 28 Oct 2024
- Updated
- 23 Dec 2024
Overview
Mu kb is an open-source printed circuit board by bkienzle3, from the bkienzle3/mu_splitkb repository on GitHub. It is a 2-layer board of 239.5 × 92.5 mm with 80 parts on 80 nets, routed with 879 tracks and 205 vias.
It is built around the LL4148. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
README.mdmu_splitkb
Mu Split Keyboard - 36-key columnar staggered split keyboard
Firmware
Firmware is located in qmk_firmware. I'm planning to have this added into the official repo. Keymaps are based on Miryoku (manna-harbour/miryoku), with my own customizations, of course.
Bill of materials
Kailh Choc V1 key switches x 36
Kailh Choc V1 Hotswap sockets x 36
Elite-C/ProMicro x 2
1N4148 MiniMELF diode x 36
TM5RF-4450 x 2
4P4C cable x 1
Inspiration
While this keyboard was created from scratch, it was heavily inspired by the Sweep (davidphilipbarr/Sweep).
Parts
80| Qty | Value | Footprint | References |
|---|---|---|---|
| 36 | LL4148 | Diode_SMD:D_MiniMELF | D1, D2, D3, D4, D5, D6, D7, D10, D11, D12, D13, D14, D15, D16, D17, D18 +20 |
| 36 | SW_Push_45deg | Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_Choc_V1_1.00u | R_SW1, R_SW2, R_SW3, R_SW4, R_SW5, R_SW6, R_SW7, R_SW10, R_SW11, R_SW12, R_SW13, R_SW14, R_SW15, R_SW16, R_SW17, R_SW18 +20 |
| 4 | VAL** | Panelization:mouse-bite-2mm-slot | mouse-bite-2mm-slot, mouse-bite-2mm-slot, mouse-bite-2mm-slot, mouse-bite-2mm-slot |
| 2 | ProMicro-EliteC | promicro:ProMicro | R_U1, U1 |
| 2 | TM5RF-44_50_ | rjs:TM5RF4450 | JTRX1, R_JTRX1 |
Questions
How big is the Mu kb PCB?
It measures 239.5 × 92.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Mu kb use?
80 parts, built around the LL4148. 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 Mu kb KiCad files?
From the bkienzle3/mu_splitkb repository on GitHub, at the commit this page was made from: the board is kicad/mu-kb.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mu kb design in my own project?
Its repository states no licence, so its author keeps all rights: ask bkienzle3 before reusing the design.
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