

Tenax
Tenax is a direct pin/diodeless split keyboard.
- Size
- 249 × 99.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 54
- Nets
- 73
- Pads
- 390
- Tracks, vias
- 331, 6
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 26 May 2022
- Updated
- 14 Dec 2022
Overview
Tenax is an open-source printed circuit board by heyitscassio, from the heyitscassio/tenax repository on GitHub. It is a 2-layer board of 249 × 99.5 mm with 54 parts on 73 nets, routed with 331 tracks and 6 vias.
Its parts include 36 switches, 2 ICs and 2 connectors. It belongs with the keyboards and input boards of this library.
README
README.mdTenax
Tenax is a direct pin/diodeless split keyboard, based on the Blackpill dev board. with pinkie splay.
Pictures

Features
- No diodes
- Simple
- No rgb
- No oled
- No buzzer (why someone would use this)
- No having fun
- Cheap to build
- Moderate stagger
- Pinkie splay
- More memory, storage and clock than pro micro based boards
- Simple and comparatively fast to build
Bill of Materials
| Component | Quantity | Comment |
|---|---|---|
| Blackpill | 2 | Weact Blackpills |
| (Optional) Round socket headers | 4 pieces with 20 slots | Sockets |
| PCB | 2 | JLCPCB |
| PJ-320A TRRS Jack | 2 | TRRS Jack |
| Plates | 2 bottom plates 2 top plates | file ready to production in ./production/case/tenax-plates.dxf |
| 3mm M2 screws | 20 | Screws |
| 8mm M2 standoffs | 10 | Standoffs |
| Hotswap sockets | 36 | Kailh Hotswap sockets |
| Switches | 36 | Any MX compatible switch will work |
Build Guide
I'm too lazy to create a build guide, but the cantor keyboard build is similar, so it can be used as reference, together with the hotswap sockets part on the corne guide.
Parts
54| Qty | Value | Footprint | References |
|---|---|---|---|
| 36 | SW_SPST | tenax:CherryMX_Hotswap | SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +20 |
| 10 | MountingHole | tenax:M2_HOLE_v2 | H3, H4, H5, H6, H7, H8, H9, H10, H11, H12 |
| 4 | Breakaway Tabs | tenax:Breakaway_Tabs | H1, H2, H13, H14 |
| 2 | AudioJack4 | tenax:MJ-4PP-9_1side | J1, J2 |
| 2 | YAAJ_WeAct_BlackPill_Part_Like | tenax:BlackPill_STLINK | U1, U2 |
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Questions
How big is the Tenax PCB?
It measures 249 × 99.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Tenax use?
54 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 Tenax KiCad files?
From the heyitscassio/tenax repository on GitHub, at the commit this page was made from: the board is tenax.kicad_pcb and its schematic tenax.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Tenax design in my own project?
Its repository states no licence, so its author keeps all rights: ask heyitscassio before reusing the design.