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DIY Toothbrush Timer: Brush-type Motor

by Lambert Varias
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Tinkerer Steve Hoefer found a way to put those kitschy chattering teeth toy to good use. With the help of a 555 timer chip, a servo and some soldering, you can turn the toy into a timer that automatically counts down as you start brushing.

toothy-toothbrush-timer-by-steve-hoeferzoom in

When you remove your toothbrush from the Toothy Toothbrush Timer’s toothbrush holder, a switch activates the chattering teeth. When the teeth stop chomping, you’re done brushing. That’s all there is to it. Steve set his timer at 2 minutes and 10 seconds, but you can of course set your own time.

Floss your browser and head to MAKE for the full guide.

[via Evil Mad Scientist Labs]

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