

Hypergolic left
Open source split PCB mods
- Size
- 119.6 × 206.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 25
- Nets
- 24
- Pads
- 173
- Tracks, vias
- 317, 3
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 20 Sep 2021
- Updated
- 25 Aug 2022
Overview
Hypergolic left is an open-source printed circuit board by filterpaper, from the filterpaper/split_pcbs repository on GitHub. It is a 2-layer board of 119.6 × 206.5 mm with 25 parts on 24 nets, routed with 317 tracks and 3 vias.
Its parts include 17 switches and 1 IC. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.
README
Architeuthis dux/README.mdSimplified Architeuthis dux

Simplified versions of tapioki's Architeuthis dux with hotswap socket and puck support removed, fixed phantom drill holes
Instructions
To build an Architeuthis dux, you need the following:
- 2 pro-micro controllers (Elite-C or Pro-micro C)
- 2 PJ320A audio jack
- 1 male-to-male TRRS cable
- 34 Kailh choc v1 switches and keycaps
- Rubber feet or bumbers for the bottom
- Optional: low profile socket with Mill-max pins, or budget socket pins with round pin headers
Note: Architeuthis dux is a double sided PCB so controllers face down on the left and face up on the right.
QMK Firmware
To build the QMK firmware, run:
qmk compile -kb a_dux -km defaultParts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | SW_Push | Kailh:SW_PG1350_rev_DPB | SW2, SW3, SW4, SW5, SW6, SW8, SW10, SW11, SW12, SW14, SW15, SW16, SW17, SW18, SW20, SW21 +1 |
| 2 | , | ||
| 2 | MountingHole_Pad | kbd:1pin_conn | GND, GND |
| 2 | Val** | kbd:1pin_conn | , |
| 1 | ProMicro-kbd | kbd:ProMicro_DPB | U1 |
| 1 | SW_SPDT | Kailh:SPDT_C128955 | SW |
Questions
How big is the Hypergolic left PCB?
It measures 119.6 × 206.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hypergolic left use?
25 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 Hypergolic left KiCad files?
From the filterpaper/split_pcbs repository on GitHub, at the commit this page was made from: the board is hypergolic V1.2 bm/archive/hypergolic_left.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hypergolic left design in my own project?
Its repository states no licence, so its author keeps all rights: ask filterpaper before reusing the design.
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