We do love a good gadget project. From tinkering with Raspberry Pi microcomputers to automating our own homes, to coming up with cool renewable energy projects…we can’t stay away. (Click on titles for links.)
1. Raspberry Pi hack unlocks door when it hears a dog’s bark
Maker David Hunt created a clever hack for a door for dog owners who are tired of getting up to let Fido outside. Called Pi-Rex, it is a bark-activated (note, not voice activated, but bark activated) door.
2. Make a Battery with Spare Change
“This teaches you how to build a battery with the spare change in your pocket. In just a few steps, a handful of pennies can power a small calculator or an LED bulb.” 3. Make a small wind turbine that kids can help build
“This project is meant to be easy enough for older kids and