NFC-Enhanced Slip Case for Smartphones

Once you have all the materials gathered, this project should take about an hour to complete (or slightly more, depending on your sewing skills). You’ll learn how to make a slip case for any smartphone but the magic is in the ability to utilize NFC (near-field communication) stickers and near-field... Read more »

Soda Bottle Goggles

Adapted from the original project by Howtoons on Instructables. Mini marshmallows shot at high speeds can smack hard and even stick. These goggles will keep the fast-flying ’mallows from hitting your eyes and face. NOTE: These goggles are intended for use with the Marshmallow Shooter to protect you from flying... Read more »

Covert Listening Book

Connect a shirt pocket “amplified listener” hearing aid with an in-car FM transmitter, and you’ve got a wireless bug. Tuck them inside a hollowed-out book with the mic concealed by the dust cover, and you’ve got a covert listening device that you can leave lying around or on a shelf... Read more »

Soda Can Label Embossing

Positive response to the review of my antique Tapewriter label embosser got me thinking about lower-cost ways to make embossed aluminum labels. A comment from reader Rick Hyde (“Actually, the aluminum is so ductile that I bet any Dymo machine can emboss it.”) led me to wonder about feeding thin... Read more »

Arduino Powered Brain Machine

It is basically an Arduino and LEDs that have been mounted on a pair of safety glasses. It runs a code that you can modify so that you get a strobe that is in front of your eyes. When you put them on, they help you see crazy patterns and... Read more »