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Tetrominoes in action

Tetromino PCBs used by whateverany.

KBD.news
Published June 12, 2021
Would you like to contribute to this year's MK Advent Calendar? Here are the guidelines for authors, along with last year's edition for reference.

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

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Published on Sat 12th Jun 2021. Featured in KBD #30 (source).

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