2 layers191.6 × 116.2 mm
Right
csun/ellipsis_split_files
PCB and Plate files for the ellipsis split https://www.csun.io/2020/06/14/ellipsis-split-buildlog.html
90 parts20
2 layers190.5 × 125.7 mm
PCB and Plate files for the ellipsis split https://www.csun.io/2020/06/14/ellipsis-split-buildlog.html
- Size
- 190.5 × 125.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 78
- Nets
- 59
- Pads
- 421
- Tracks, vias
- 438, 6
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 23 Sep 2020
- Updated
- 2 Mar 2023
Overview
Left is an open-source printed circuit board by csun, from the csun/ellipsis_split_files repository on GitHub. It is a 2-layer board of 190.5 × 125.7 mm with 78 parts on 59 nets, routed with 438 tracks and 6 vias.
Its parts include 35 switches, 34 diodes, 2 ICs and 1 connector. It belongs with the AVR (ATmega, ATtiny) boards of this library.
README
README.mdKiCad files for the pcb in the pcb/ directory
dxf files for the plates in the plates/ directory. This includes files for the templates used to cut out the wrist rests.
V2 Construction Notes
The board is laid out for this specific aliexpress promicro clone. You can probably use a standard promicro, but the USB port will not be flush with the edge of the board.
The toggle switch used is the E-Switch 100SP1T2B4M6QE. TBH I'd buy a clone of this off aliexpress too and save yourself a bunch of money.
Firmware source can be found here on the ellipsis_split_v2 branch.
V1 Construction Notes
Most of the components needed for assembly should be properly labelled in the pcb files. The screen used is this adafruit one based on the SSD1306 driver chip.
I cut wrist rests from wood using the router template included in the plates directory.
You'll also need M2 standoffs of various lengths to separate the two plates enough to fit the PCB. I think around 12mm is the minimum allowable height.
Firmware source uses QMK and can be found here
Parts
78| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole_4mm | MountingHole:MountingHole_4mm | , , , |
| 1 | D_1 | keyboard_parts:D_SOD123_axial | D2 |
| 1 | D_2 | keyboard_parts:D_SOD123_axial | D3 |
| 1 | D_3 | keyboard_parts:D_SOD123_axial | D16 |
| 1 | D_4 | keyboard_parts:D_SOD123_axial | D21 |
| 1 | D_5 | keyboard_parts:D_SOD123_axial | D26 |
| 1 | D_6 | keyboard_parts:D_SOD123_axial | D31 |
| 1 | D_A | keyboard_parts:D_SOD123_axial | D9 |
| 1 | D_B | keyboard_parts:D_SOD123_axial | D29 |
| 1 | D_C | keyboard_parts:D_SOD123_axial | D19 |
| 1 | D_CAPS | keyboard_parts:D_SOD123_axial | D5 |
| 1 | D_CL1 | keyboard_parts:D_SOD123_axial | D32 |
| 1 | D_CL2 | keyboard_parts:D_SOD123_axial | D33 |
| 1 | D_CL3 | keyboard_parts:D_SOD123_axial | D34 |
| 1 | D_D | keyboard_parts:D_SOD123_axial | D18 |
| 1 | D_E | keyboard_parts:D_SOD123_axial | D17 |
| 1 | D_ESC | keyboard_parts:D_SOD123_axial | D1 |
| 1 | D_F | keyboard_parts:D_SOD123_axial | D23 |
| 1 | D_G | keyboard_parts:D_SOD123_axial | D28 |
| 1 | D_LALT | keyboard_parts:D_SOD123_axial | D15 |
| 1 | D_LCTL | keyboard_parts:D_SOD123_axial | D7 |
| 1 | D_LSFT | keyboard_parts:D_SOD123_axial | D6 |
| 1 | D_LSUP | keyboard_parts:D_SOD123_axial | D11 |
| 1 | D_Q | keyboard_parts:D_SOD123_axial | D8 |
| 1 | D_R | keyboard_parts:D_SOD123_axial | D22 |
| 1 | D_S | keyboard_parts:D_SOD123_axial | D13 |
| 1 | D_T | keyboard_parts:D_SOD123_axial | D27 |
| 1 | D_TAB | keyboard_parts:D_SOD123_axial | D4 |
| 1 | D_TL1 | keyboard_parts:D_SOD123_axial | D20 |
| 1 | D_TL2 | keyboard_parts:D_SOD123_axial | D25 |
| 1 | D_TL3 | keyboard_parts:D_SOD123_axial | D30 |
| 1 | D_V | keyboard_parts:D_SOD123_axial | D24 |
| 1 | D_W | keyboard_parts:D_SOD123_axial | D12 |
| 1 | D_X | keyboard_parts:D_SOD123_axial | D14 |
| 1 | D_Z | keyboard_parts:D_SOD123_axial | D10 |
| 1 | KEY_1 | keebs:Mx_Alps_100 | K2 |
| 1 | KEY_2 | keebs:Mx_Alps_100 | K3 |
| 1 | KEY_3 | keebs:Mx_Alps_100 | K16 |
| 1 | KEY_4 | keebs:Mx_Alps_100 | K21 |
| 1 | KEY_5 | keebs:Mx_Alps_100 | K26 |
| 1 | KEY_6 | keebs:Mx_Alps_100 | K31 |
| 1 | KEY_A | keebs:Mx_Alps_100 | K9 |
| 1 | KEY_B | keebs:Mx_Alps_100 | K29 |
| 1 | KEY_C | keebs:Mx_Alps_100 | K19 |
| 1 | KEY_CAPS | keebs:Mx_Alps_175 | K5 |
| 1 | KEY_CL1 | keebs:Mx_Alps_100 | K32 |
| 1 | KEY_CL2 | keebs:Mx_Alps_100 | K33 |
| 1 | KEY_CL3 | keebs:Mx_Alps_100 | K34 |
| 1 | KEY_D | keebs:Mx_Alps_100 | K18 |
| 1 | KEY_E | keebs:Mx_Alps_100 | K17 |
| 1 | KEY_ESC | keebs:Mx_Alps_100 | K1 |
| 1 | KEY_F | keebs:Mx_Alps_100 | K23 |
| 1 | KEY_G | keebs:Mx_Alps_100 | K28 |
| 1 | KEY_LALT | keebs:Mx_Alps_125 | K15 |
| 1 | KEY_LCTL | keebs:Mx_Alps_125 | K7 |
| 1 | KEY_LSFT | keebs:Mx_Alps_225 | K6 |
| 1 | KEY_LSUP | keebs:Mx_Alps_125 | K11 |
| 1 | KEY_Q | keebs:Mx_Alps_100 | K8 |
| 1 | KEY_R | keebs:Mx_Alps_100 | K22 |
| 1 | KEY_S | keebs:Mx_Alps_100 | K13 |
| 1 | KEY_T | keebs:Mx_Alps_100 | K27 |
| 1 | KEY_TAB | keebs:Mx_Alps_150 | K4 |
| 1 | KEY_TL1 | keebs:Mx_Alps_125 | K20 |
| 1 | KEY_TL2 | keebs:Mx_Alps_125 | K25 |
| 1 | KEY_TL3 | keebs:Mx_Alps_125 | K30 |
| 1 | KEY_V | keebs:Mx_Alps_100 | K24 |
| 1 | KEY_W | keebs:Mx_Alps_100 | K12 |
| 1 | KEY_X | keebs:Mx_Alps_100 | K14 |
| 1 | KEY_Z | keebs:Mx_Alps_100 | K10 |
| 1 | LOGO | graphics:emblem_with_version | G*** |
| 1 | OLED_CONN | mouser:SHDR4W60P0X250_1X4_1240X1150X670P | J1 |
| 1 | ProMicro | keebio:ArduinoProMicro | U2 |
| 1 | RST_SW | mouser:LL3301NF065QG | S1 |
| 1 | TRRS | keebio:TRRS-PJ-320A | U1 |
The 77 most common of 78 parts.
Questions
How big is the Left PCB?
It measures 190.5 × 125.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Left use?
78 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 Left KiCad files?
From the csun/ellipsis_split_files repository on GitHub, at the commit this page was made from: the board is pcb/v1/left.kicad_pcb and its schematic pcb/v2/left.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Left design in my own project?
Its repository states no licence, so its author keeps all rights: ask csun before reusing the design.
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2- 2 layers175.7 × 116.2 mm
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csun/ellipsis_split_files
PCB and Plate files for the ellipsis split https://www.csun.io/2020/06/14/ellipsis-split-buildlog.html
76 parts20
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