Coin cell battery

Simple Surface Mount PCB Milling With The Othermill

New Project: Machine your own PCBs using FR1 and the Othermill.

ViBracelet

The goal of this project is to build a vibrating bracelet that alerts the wearer to incoming calls on an iPhone 4S. This device was originally created for a blind and partially hearing-impaired client who could not hear or see her phone ringing and wanted an inconspicuous and wearable device that physically alerted her of […]

Eternal Flame Indestructible LED Lantern

Build simple, rugged, floating LED lanterns that glow for days.

Robot Halloween Costume

I know a little girl who has wanted to be a robot for as long as she can remember — a dancing robot, to be precise. The best thing about being a kid is letting your imagination run wild. The best thing about being a grown-up is being able to make a child’s dreams come […]

Double Pendulum

Devices that demonstrate true chaotic behavior (in a strict mathematical sense) are rare. Even rarer are chaotic devices that are easy enough for the typical maker to build at home and are interesting and beautiful. But one device nicely fits the bill: the double pendulum. A double pendulum consists of a bar swinging from a […]