Persistence of vision display using only 555 timers

I created this display for the 555 timer contest, a compact art piece that cries out in appreciation of the venerable 555 timer. It’s a persistence of vision display formed by 7 blue leds and 3 NE555 timers, which spells out 5 5 5 as it revolves.

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Robotender Mk. 1

Robotender is a robotic bartender. It can mix any quantity of 9 different liquids together to make a wide range of drinks. The touch screen allows a recipe and drink size to be selected and it will then be poured. If a recipe contains any ingredients that aren’t currently loaded into a reservoir, the screen will instruct you to pour that one in manually. One of the most enjoyable drinks to pour is a Long Island Ice Tea, which causes 5 reservoirs to activate in quick succession, and only needs to be topped off with a touch of Cola for color.

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MB v.2

My good friend Jeff Frohwein has started production of his MultiBoot Version 2 cable, which allows you to download up to 256 kbytes of code to your Gameboy Advance and test your programs on the actual hardware. I have one and I must say it is a wonderful development tool.

Update: The first batch of 50 cables sold out rapidly, but there are more batches on the horizon, check periodically for more information.