Astro-Beano

Novice astronomer and photographer near Dundee, Scotland, starting out with his first telescope. Also dissects webcams & puts them in bird boxes, and tinkers with Raspberry Pi projects.

Friday, 4 July 2025

My first keyboard PCB design - a diode-free 36 key ergonomic layout

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My previous blog posts talked about diode-free keyboard designs using topology , and specifically using a partial Tutte-Coxeter graph for ke...

Friday, 30 May 2025

Mechanical keyboard wiring using the Tutte-Coxeter graph

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Following my post on Topology meets Keyboard Design , I spent a few days exploring small less symmetric graphs, trying to find something in ...

Friday, 23 May 2025

Topology meets custom keyboard circuit design

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Lately I've been reading about ergonomic keyboards, including DIY, spilt keyboards, and custom layouts. I'm currently learning to t...

Sunday, 1 February 2015

Ikea ZAISU - Floor chairs for our kotatsu

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A year ago I setup a DIY kotatsu using an Ikea LACK coffee table , but never got a proper futon-mat, nor any Japanese style floor chairs to...

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Saturday, 6 September 2014

Curious Rover Tracks at Space Expo 2014

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This week I enjoyed visiting the Space Expo 2014 "The Great Challenge of NASA/JAXA" which is being held 19 July to 23 September a...

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