Keyboard Builders' Digest / Projects
KrtkusRetro
A 5x12 ortholinear keyboard in a Model M-inspired case: KrtkusRetro by Jan Bláha.
Published October 30, 2025
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Jan Bláha aka swift502 updated his Krtkus project with a custom IBM-inspired case, turning the 5x12 ortho keyboard into a Model M style retro cuteness.
Yes, it shouldn't be low profile. Yes the kecaps add a curved profile onto an existing curve, which doesn't make any sense. Maybe I'll make a more faithful build with the original Model M keycaps one day, but this is just what I had lying around for now – swift502.
The IBM Model M style case actually bends the PCB a little, but "nowhere near as much as the Model M".
Specs
- 62 keys, ortholinear (5x12+2)
- low-pro KS-33 switches
- Pro Micro controller
- 3D-printed case
- the LED indicators are only for decoration
Resources
Published on Thu 30th Oct 2025. Featured in KBD #201 (source).
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