2 layers187.2 × 26.6 mm
2 layers238.5 × 84.2 mm
Lul left
kaibagley/Thunder-LightningA small 3x5+2 split ortho keyboard
- Size
- 238.5 × 84.2 mm
- Copper layers
- 2
- Thickness
- 1 mm
- Parts
- 50
- Nets
- 53
- Pads
- 376
- Tracks, vias
- 432, 3
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 15 Mar 2023
- Updated
- 4 Apr 2023
Overview
Lul left is an open-source printed circuit board by kaibagley, from the kaibagley/Thunder-Lightning repository on GitHub, published under the MIT licence. It is a 2-layer board of 238.5 × 84.2 mm with 50 parts on 53 nets, routed with 432 tracks and 3 vias.
Its parts include 34 switches, 2 ICs and 2 connectors. It belongs with the nRF52 and nRF5x boards of this library.
README
README.md3x5+2 key split orthogonal BLE keyboard
This fork is a custom version of weteor's Lütt un Lütt, altered such that it is powered by a pair of LiPO batteries rather than coin cells, and uses MX switches.
Features
- Diode-less pcb, since there are enough GPIO pins on the nice!nano
- full BLE, powered by 3.7v 110mAh LiPO batteries
- MX hotswap sockets
- case files are supplied (stl, dxf, as well as the freecad files)
- supports both nice!nano and pro micro
- QMK, ZMK, etc. support with pro micro, or ZMK with nice!nano
Prototype
- First prototype printed on 18th March 2023
what's left to do?
- fix small hole placement error in case
- implement support of Elite-C/Pi
- add mounting holes
Credit
This repo is inspired by weteor's Lütt un Lütt, please visit this link: https://github.com/weteor/LuttUnLutt to view the original, and support the creator.
Parts
50| Qty | Value | Footprint | References |
|---|---|---|---|
| 32 | SW_Push | MX_Only:MXOnly-1U-Hotswap | SW1, SW2, SW10, SW11, SW12, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW22, SW23, SW24, SW25 +16 |
| 2 | JST Connector | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J1, J2 |
| 2 | LOGO | LOGO | G1, G2 |
| 2 | SW_Push | MX_Only:MXOnly-1.75U-Hotswap | SW13, SW21 |
| 2 | SW_RESET | random-keyboard-parts:SKQG-1155865 | SW_RESET_1, SW_RESET2 |
| 2 | SW_SPDT | Button_Switch_SMD:SW_SPDT_PCM12 | SW_SPDT_1, SW_SPDT_2 |
| 2 | nice_nano | nice-nano-kicad:nice_nano | U1, U2 |
The 44 most common of 50 parts.
Questions
How big is the Lul left PCB?
It measures 238.5 × 84.2 mm and has 2 copper layers, 1 mm thick.
What parts does the Lul left use?
50 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 Lul left KiCad files?
From the kaibagley/Thunder-Lightning repository on GitHub, at the commit this page was made from: the board is pcb/lul_left/lul_left.kicad_pcb and its schematic pcb/lul_left/lul_left.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Lul left 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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