DIY Smartphone LED Ring Light


A ring flash will get you a shot with uniform lighting without harsh shadows. Lighting blogger Simon Ellingworth whipped up this LED variant for smartphones using a UFO-style camping light, a cheap smartphone case, and some velcro. You’ll obviously have to tweak your settings to achieve the effect you want,... Read more »

Lego Mindstorms Telepresence Robot

Screen shot 2012-12-21 at 10.17.07 AM

Ricky’s telepresence robot consists of a Mindstorms robot hauling around a Skype-enabled tablet. The robot is controlled by a color sensor which detects color-coded commands on the tablet’s screen and navigates accordingly. [via The NXT Step] Read more »



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... Read more »

Simple Night-Vision Goggles


The camera uses near-infrared light emitted by the LEDs. Since it doesn’t have a near-IR filter, it picks up the IR light better than a normal camera does. The LEDs are super bright and the LED ring can throw light about 30 or 40 yards. Read more »