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[Basil Shikin] was thinking about different types of locks, and was trying to come up with a locking solution that he had yet to see. It dawned on him that he had never come across a lock triggered by music, so he set off to construct one of his own. He ordered a wooden chest [...]

Tags:  solution chest lock basil-shikin shikin wooden-chest basil arduino hacks  

This hack came out so well that [Levent] wishes he had tried it years ago. When exercising he wears a Polar heart rate monitor which sends data from a chest strap to his wristwatch. But his exercise bike also has a heart rate readout that depends on your hands touching metal contacts on the handlebars. He set [...]

Tags:  chest rate heart polar-heart-rate polar-heart-rate-monitor heart-rate-monitor home hacks  

[Mikey Sklar] finds himself in need of a temperature regulated refrigerator for fermenting foods like yogurt, kimchi, bread, and beer. After some testing he found that by building his own controller he can get a chest freezer to outperform an upright refrigerator at this task by 2-to-1. The controller is based around an ATmega48. It [...]

Tags:  chest controller freezer freezer-temperature chest-freezer temperature-controller beer hacks