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Backyard Rope Tow from Spare Parts
A few years ago, [Jeremy Makes Things] built a rope tow in his back yard so his son could ski after school. Since the lifts at the local hill closed shortly after schools let out, this was the only...
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A Modern Take on the Etch A Sketch
The Etch A Sketch is a classic children’s toy resembling a picture frame where artwork can be made by turning two knobs attached to a stylus inside the frame. The stylus scrapes off an aluminum powder,...
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Moving Software Down to Hardware
In theory, any piece of software could be built out of discrete pieces of hardware, provided there are enough transistors, passive components, and time available. In general, though, we’re much more...
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Integrated BMS Makes Battery Packs Easy
Lithium technology has ushered in a new era of batteries with exceptionally high energy density for a reasonably low cost. This has made a lot possible that would have been unheard of even 20 years ago...
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Fitting a Spell Checker into 64 kB
By some estimates, the English language contains over a million unique words. This is perhaps overly generous, but even conservative estimates generally put the number at over a hundred thousand....
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An Inexpensive Way to Break Down Plastic
Plastic has been a revolutionary material over the past century, with an uncountable number of uses and an incredibly low price to boot. Unfortunately, this low cost has led to its use in many places...
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Automatically Crack Safes with this Autodialer
When attempting to secure something, whether it’s a computer, sensitive data, or valuables, there’s always going to be a way to break that security. It might be impossibly hard, like taking centuries...
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