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Taking your pulse is as simple as holding a finger to your neck or wrist and timing the beats with your watch. But if you want to record the data or use it to trigger events, you need to turn that mechanical pulsing action into an electrical signal. This sensor... Read more »

MAKE_WP04_InternetKillSwitch_finished

While the user's away, the malware will play. Keep your computer out of online mischief, when you're not using it, by building this simple, foolproof, easy-bake hardware kill switch. Read more »

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Adapt a retro-style headlight generator to charge your cell phone with this simple circuit. Read more »

ShapeLock Sanding Blocks

Inspired by the Sandables concept that recently made the rounds, we've been experimenting with adding abrasive grit to polycaprolactone (aka ShapeLock) thermoplastic to make rigid sanding blocks that can be reformed, with mild heating, to fit into hard-to-reach nooks and crannies on your work. Read more »

Ball-in-cage switch

A ball-in-cage switch is a mechanical alarm switch that works on an ingenious principle. It has a single relatively unstable “open” position, in which a metal ball rests in a small divot in an insulating base, inside a cage made from two U-shaped metal staples that overlap one another without... Read more »

Complete instructions for this episode of Weekend Projects can be found at http://makeprojects.com/Project/Mini-Rover-Redux/2479/1 Learn the basics of modding a remote controlled (RC) vehicle for the purpose of making your own terrestrial rover. Mount one wireless camera onto your vehicle's chassis, and see how far you can drive it and see... Read more »

M36_Projects_ShrinkFilmOpener-4

Faster than figurines, tougher than cardboard, and way more fun to make. Read more »

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