this post was submitted on 25 Jun 2023
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ErgoMechKeyboards

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Ergonomic, split and other weird keyboards

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¹ split meaning a separation of the halves, whether fixed in place or entirely separate, both are fine.
² ortholinear meaning keys layed out in a grid

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Hi all,

I have an idea in my head, but I’m a cable short, and looking for suggestions.

24-key split-ortho (2 keys per finger, where you press both top and bottom keys simultaneously to get the home row key), with per-key RGB and OLED display on the left side. But…

I’d like to run this off a single BlackPill controller on the left hand side, and use a CAT6 cable to bridge the two sides.

CAT6 has 4 twisted pairs, so 8 cables. If I run a 4x3 matrix then that’s 7 cables. Plus another for the VCC for the RGB. But then no more for the DIN/DOUT for RGB. GND should be fine as I can earth the right hand side separately, but I’m missing a cable if I want RGB.

Are there any suggestions on how I might be able to get around my challenge?

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[–] corvett@lemmy.world 1 points 1 year ago* (last edited 1 year ago)

I'd drop the RGB man.

Or with diodes, could you logically arrange your 24 keys into 4 rows / 6 columns (or even 5x5) and save any pins that way?

Edit: you're already doing a 4x3 per side. Nvm