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Articulation70

The articulation70 is a successor to Myles Lee's articulation80 keyboard – with LEDs and a more personalized layout.

KBD.news
Published January 4, 2024
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Myles Lee shared the articulation70, an open-source low-pro split with arrow and navigation cluster on one half (or both). As the successor to the author's original articulation80, this iteration features a similar snap-off 3x4 cluster (numpad or arrow+navigation).

My previous keyboard, the articulation80 has splayed columns copied from the KLOTZ and thumb keys copied from the Hillside keyboard. While designing the first PCB was a good start, I wanted a keyboard better fitted to my own hands – Myles.

Specs

  • variable pinky stagger (±1 mm vertically offset configurations)
  • 3 × 6 main body, 3 thumb switches, 2 corner switches and 3 × 4 numpad layout
  • Kailh Choc V1 hot-swap support
  • break-off number pad
  • serial or I2C connection between the halves
  • Pro Micro-compatible controller support
  • 3 LEDs
  • reversible PCB to reduce manufacturing costs

The author chose a more aggressive column stagger layout with variable pinky stagger support after noticing his pinky fingers were shorter than average and they were not exactly the same length.

Pic:

In addition, the numpad is rotated clockwise instead of counter clockwise as it made more sense to the author's arms and user case.

I went through 15 iterations on paper before designing the PCB.

Pic:

Plugins

In addition to the keyboard itself, Myles also shared a couple of KiCad plugins: the first one splits two selected intersecting traces into four traces. ("When joining traces from rotated switches, it can be difficult to connect traces from two angles to form a aesthetic curve.")

Pic:

And there's a second plugin which calculates the total trace length.

I saw the Chrumm, which was very impressive, and the author also wrote a new plugin, which was hugely helpful to designing my PCBs.

Resources

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Published on Thu 4th Jan 2024. Featured in KBD #149.


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