Keyboard Builders' Digest / Tips & Tricks
Tetrominoes in action
Tetromino PCBs used by whateverany.
Published June 12, 2021
Tetrominoes are a set of five open source PCBs designed by 40percent.club. They are not new (introduced in 2019), but I wasn't aware of them until whateverany posted a board featuring these little guys.
The PCB's can be arranged to fit just about any rectangular shape with a number of switches divisible by 4.
The designs are open source and the Gerber files are available at: https://git.40percent.club/di0ib/Misc/src/branch/master/tetrominoes
There are five designs. They use the same any direction switch pads that I used on the Polyandry. Individual PCB's can be placed in any orientation – di0ib
Here is a blog post on 40percent.club with more details.
Btw, a tetromino is a geometric shape composed of four squares, connected orthogonally (i.e. at the edges). They may be familiar from Tetris. More on tetrominoes in general: https://en.wikipedia.org/wiki/Tetromino
Published on Sat 12th Jun 2021. Featured in KBD #30 (source).
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