4 layers99 × 53.3 mm
PSLab
fossasia/pslab-hardware
PSLab Hardware Design and Schematics https://pslab.io
199 parts1.7kApache-2.0
2 layers128.2 × 150.3 mm
Split 3x
MangoIV/dracuLad230QMK-powered 34-36 key split keyboard
- Size
- 128.2 × 150.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 87
- Nets
- 61
- Pads
- 503
- Tracks, vias
- 1,017, 125
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 15 Nov 2020
- Updated
- 7 Mar 2024
Overview
Split 3x is an open-source printed circuit board by MangoIV, from the MangoIV/dracuLad repository on GitHub. It is a 2-layer board of 128.2 × 150.3 mm with 87 parts on 61 nets, routed with 1,017 tracks and 125 vias.
It is built around the WS2812B. Its parts include 29 diodes, 6 switches, 2 resistors and 2 ICs. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
README.mdThe DracuLad keyboard
This is a 34-36-key-board.
Features
- 36 keys, two of them can be replaced by rotary encoders making it support 34-36 keys and 2-4 encoders.
- bright RGB Underglow with WS2812b LEDs
- one SSD1306 OLED per side
- support for the pimoroni trackball
- powered by QMK-firmware (Firmware has been merged and can be found on the QMK master)
- aggressive pinky stagger similar to the Kyria but with a slightly alternative thumb cluster to raise comfort for large hands
- support for MX and Kailh choc v1 switches
- files for fr4 plate and acrylic bottom plate as well as OLED window
State of the project
- PCBs are fully working (OLED, LEDs, all switches, encoders, Trackball)
- acrylic plates have arrived and fit perfectly
- 3D-printable case has been added thanks to the awesome work of Sadek Baroudi
- basic ZMK Firmware (not all features implemented yet) exists on my fork of the zmk firmware
Hardware availability
- hardware availability is always a big problem and ordering everything yourself is a big hustle. Therefore I'm happy to tell you that Ben from keycapsss (not me) is so kind to offer everything to make a full build. And for those of you who are American, littlekeyboards (also not me) also offers kits
- if you live in a remote area resulting in high shipping costs or problems with importing, gerbers for ordering the PCBs and SVGs for getting plates cut are available in this repo, too
Things to consider before getting a DracuLad
- for the upper encoder you can't use the really big guitar knobs as they're too wide and will interfere with the OLEDs, the smaller ones are recommended
- the thumb cluster is lower than on boards like the Corne keyboard
- liking or disliking a layout is not a matter of how "good" the layout is but mostly preference, hence I recommend looking at a split keyboard comparison site and print out some layouts to confirm you like it. (DracuLad can be found there, too)
- before purchasing encoders, make sure they fit! The holes in the plate are 12mm x 12mm and won't fit bigger encoders. They're in particular not the size of the switch footprints.
Some pictures to get your mouth watery
Parts
87| Qty | Value | Footprint | References |
|---|---|---|---|
| 19 | D_Small | Keebio-Parts:D_SOD123F | D1, D2, D3, D4, D5, D6, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19 +3 |
| 18 | MX-NoLED | other_parts:CherryMX_Choc_1u_reversible | MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX10, MX11, MX12, MX13, MX14, MX15, MX16, MX17, MX18 +2 |
| 14 | Jumper_NO_Small | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP2, JP3, JP4, JP5, JP6, JP7, JP8, JP9, JP10, JP13, JP14, JP15, JP18 |
| 10 | WS2812B | Keebio-Parts:WS2812B | D20, D21, D22, D23, D24, D25, D26, D27, D28, D29 |
| 3 | MountingHole_2.2mm_M2_Pad_Via | MountingHole:MountingHole_2.2mm_M2_Pad_Via | , , |
| 2 | 4.7k | Resistor_SMD:R_0805_2012Metric | R1, R2 |
| 2 | LOGO | graphics:mangoiv | G***, G*** |
| 2 | LOGO | graphics:logo | G***, G*** |
| 2 | LOGO | graphics:aset | G***, G*** |
| 2 | Rotary_Encoder_Switch | Keebio-Parts:RotaryEncoder_EC11-no-legs | SW3, SW4 |
| 2 | SW_DIP_x01 | other_parts:switch_MSK-12C02_smd | SW5, SW6 |
| 2 | SW_Push | Keebio-Parts:SW_SPST_TL3342 | SW1, SW2 |
| 1 | Bat_loc1 | Connector_PinHeader_2.00mm:PinHeader_1x02_P2.00mm_Vertical | BT1 |
| 1 | Conn_01x05 | other_parts:pimoroni_left_side_mount | pim1 |
| 1 | ProMicro | other_parts:ProMicro | U1 |
| 1 | SSD1306 | SSD1306:128x64OLED | Brd1 |
| 1 | TRRS | Keebio-Parts:TRRS-PJ-320A-dual | U2 |
The 83 most common of 87 parts.
Questions
How big is the Split 3x PCB?
It measures 128.2 × 150.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Split 3x use?
87 parts, built around the WS2812B. 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 Split 3x KiCad files?
From the MangoIV/dracuLad repository on GitHub, at the commit this page was made from: the board is kicad/split_3x.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Split 3x design in my own project?
Its repository states no licence, so its author keeps all rights: ask MangoIV before reusing the design.
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