2 layers85 × 115 mm
OSO BOOK C1
joeycastillo/The-Open-Book
For details on how to build, test and use Open Book, I've made documentation available here.
38 parts8.1kCC-BY-SA-4.0
2 layers95 × 130 mm
Main project v2
theMessiestProgrammerThatsEverLived/keyboardmy own mx low profile mx keyboard
- Size
- 95 × 130 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 38
- Nets
- 37
- Pads
- 147
- Tracks, vias
- 206, 22
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 14 Sep 2026
- Updated
- 18 Sep 2026
Overview
Main project v2 is an open-source printed circuit board by theMessiestProgrammerThatsEverLived, from the theMessiestProgrammerThatsEverLived/keyboard repository on GitHub. It is a 2-layer board of 95 × 130 mm with 38 parts on 37 nets, routed with 206 tracks and 22 vias.
Its parts include 17 diodes, 17 switches, 1 IC and 1 connector. It belongs with the ESP32 boards of this library.
Parts
38| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | D | Diode_SMD:D_SMA_Handsoldering | D1, D2, D3, D4, D5, D6, D7, D8, D10, D11, D13, D14, D15, D16, D18, D19 +1 |
| 14 | SW_Push | PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_1.00u | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW9, SW10, SW11, SW13, SW14, SW15, SW19 |
| 2 | , | ||
| 2 | SW_Push | PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_2.00u_90deg | SW8, SW16 |
| 1 | Conn_01x06_Pin | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J1 |
| 1 | ESP32-S3-SuperMini | esp32:ESP32-S3-SuperMini | U1 |
| 1 | SW_Push | PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_2.00u | SW18 |
Questions
How big is the Main project v2 PCB?
It measures 95 × 130 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Main project v2 use?
38 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 Main project v2 KiCad files?
From the theMessiestProgrammerThatsEverLived/keyboard repository on GitHub, at the commit this page was made from: the board is smd_ver/main_project_v2.kicad_pcb and its schematic main_project.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Main project v2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask theMessiestProgrammerThatsEverLived before reusing the design.
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