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Nottingham Hackspace “days accident free” counter

Posted on Tuesday, January 15th, 2013 in 7400 contest, hacks by DP

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Fowkc tweeted a picture of his somewhat late open 7400 competition entry. It’s a giant 3 digit 7 segment display used to count the number of day’s there hasn’t been an accident in his local hackerspace. You can read about it’s development on his blog.

Back in September 2011, Dangerous Prototypes started a competition for designs in 7400/4000 series logic.

I had a project in mind: the Nottingham Hackspace “days accident free” counter. Conceptually simple, it would replace the “manual” one we had with a 12″ high three-digit seven segment display that would automatically count up every day. There would be a big red reset button, probably with flashing lights and alarms when you hit it.

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