ULK ulp
About the ULK ulp PCB
ULK ulp is an open source PCB design by Goga64, published on GitHub under the MIT license. It is a 2-layer board measuring 275.5 × 105.6 mm, with 93 components from 7 distinct parts.
Other key parts include the ProMicro. By type, the board carries 44 switches, 42 diodes and 4 ICs.
It belongs with the keyboards designs in this gallery.
From the project
Low profile split keyboard with Corne 42 Layout and Cerry ULP switches. (6mm height)
Low profile split keyboard with Corne 42 Layout and Cherry ULP switches. Made to be used on top of a laptop keyboard to provide the ultimate split experience on the go.
I prefer the sound of the ULP Click, although it is still not as nice as the full size switches.
The solar version however is diodeless, thus it is direct wired. So you should use my a modified verion of the MC Technology's zmk-config GitHub link
Main components on the ULK ulp
ULK ulp bill of materials (BOM)
93 components, 7 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | ProMicro | ProMicro_v3 | U1, U2 |
| 2 | ~ | PinHeader_1x02_P2.54mm_Vertical | U3, U5 |
| 2 | SW_RESET | ResetSW_1side | RSW1, RSW2 |
| 42 | SW_PUSH | Cherry_ULP_SMD | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +34 |
| 2 | PCM12SMTR | SW_PCM12SMTR | SW43, SW44 |
| 1 | VAL** | mouse-bite-2mm-slot | mouse-bite-2mm-slot |
| 42 | D | D3_SMD_v2 | D1, D2, D3, D4, D5, D6, D7, D8 +34 |
ULK ulp design files
The KiCad project lives in the Goga64/ULK repository on GitHub; these links point at the commit this page was built from.
ULK ulp: common questions
How big is the ULK ulp PCB?
The ULK ulp measures 275.5 × 105.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ULK ulp?
93 components, from 7 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the ULK ulp design files?
From the Goga64/ULK repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the ULK ulp design in my own project?
Yes, under the terms of its MIT license, which Goga64 chose for the repository.
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