Sessile

Sessile is a further exploration of "minimal" finger travel.

What Even Is 'Minimal Finger Travel' Anyway?

Probably the least amount of finger travel would be not moving them at all. That would be 10 keys...

$$combos_{10\,keys} = \sum_{r=1}^{10} C(10, r) = 1023$$

...yielding 1023 possible combinations.

More realistically, we might consider excluding cross hand combinations so that modifiers might be used. That would give us

$$combos_{5\,keys} = \sum_{r=1}^{5} C(5, r) = 31$$

So, with only 5 keys on both hands, and no cross hand combos, we would have a total of 62 possible keys per layer—more than sufficient.

I wasn't quite ready to take on learning to type on that though, so just avoiding lateral reaches seemed like a start. 🙃

Features

• Sessile uses KLP-Lame keycaps. Larger caps may be tight, especially on the bottom row. I was lazy and didn't model the tilted keycaps in the rendering, but they're much nicer for the vertical combos.

• Uses battery LIR1254.

• The high speed pins were left available for encoders and could be wired in a subsequent revision.

• Built with RMK. Combos soon to follow upon upstream merge.

Production Files

You can find the gerbers, bom, and cpl for JLC here. Finished boards are available here

Origin

Sessile was produced using studyofhands.