A split keyboard family by u/james_sa with a central controller piece: Pragmatic.
KBD.news Published September 6, 2022
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James Sa (aka jamessa or james_sa) published his Pragmatic open-source keyboard family, with three models at the moment.
Pragmatic 72 is a 6x6 ortho (per half) with F-row, Pragmatic 60 is similarly ortholinear but without the function keys, finally, there's a 34-key split ergo version with columnar staggering and two-key thumb clusters.
These models share both the logical layout (sort of) and a controller board outsourced to a separate third PCB, connected by ribbon cables and IDC connectors.
The basic idea for “Pragmatic” is using a single micro controller for keyboard matrix scanning. It’s my keep it simple solution during this MCU shortage period – james_sa.