Author Archives: mechatronicsguy

Waves at Bessel-on-Sea

This is a lasercut version of the Bessel Functions, as a handy desk ornament: The helical diffraction theory, (and hence the Bessel functions) were the major key to solving the structure of DNA. In 1952 (well before the DNA structure … Continue reading

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The Crystallographer’s Watch

Here’s a project I made almost accidentally on the way to a later design. I’ve wanted to make my own watch for a while now. It’d allow me to pick and choose all the features I really want, and it’s … Continue reading

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The Dichroic Confuse-O-Scope

This is the ‘Confuse-O-Scope’, a device which allows you to enjoy all the fun of having mis-aligned RGB in real life! Guaranteed to cause both confusion and irritation in anyone that’s worked in TV, printing or theatre lighting! It uses … Continue reading

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Dichroic Moving Sculpture

This is a quick project I made to explore dichroic filters. I just love the colours that can be produced, and wanted a way to display it easily. In the last few years, these dichroic cubes have appeared on eBay. They’re used … Continue reading

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A Planetary/Harmonic Hybrid Gearbox

I recently saw this amazing idea from Darren Schwenke on Hackaday.io: https://hackaday.io/project/164732-mprt-modified-planetary-robotics-transmission Which is (so far as I know) a brand new type of gearbox, inspired by a well known concept called a  “Harmonic-Drive“. Harmonic drives have been around for … Continue reading

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Unwisely driving 17 stepper motors from a bare arduino

This is a quick and dirty way to get a whole bunch (up to 17) small stepper motors working off a single arduino, with no extra circuitry whatsoever. Why would you want to do that? Maybe you want to make … Continue reading

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Tangent Ruler – Draw circles passing through two points

Unintentionally I’m going to continue my tradition of making projects involving rulers. I saw this picture online: https://imgur.com/t/aiko/mu96ohu and I thought it was too cute a technique not to try out for myself. I did a couple of minutes sketching in … Continue reading

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