Month: May 2011

Roll Your Own RFID Tags

Roll Your Own RFID Tags

Beth’s prototype design, here, uses 100 turns of AWG 40 magnet wire, an ATtiny85 integrated circuit, a couple of surface-mount capacitors, and a duct-tape substrate sealed under a layer of clear packing tape. She reports that “the read range is practically indistinguishable from a mass-produced RFID card.”

Skill Builder: Jeff Potter’s Yogurt Lab

Skill Builder: Jeff Potter’s Yogurt Lab

One of the great things about learning food science is the need to test everything. I say “need” because, in truth, it’s a lot of fun to geek out over the details and try various experiments that I wouldn’t normally try. Take yogurt. Everyone is familiar with it, but how is it made? Where does it come from? (Besides the store…) Making yogurt is incredibly easy, especially once you know some of the food science background. A bunch of different types of “friendly” bacteria chow down on the lactose sugars in milk, creating lactic acid in the process. This process, called fermentation, also changes the structure of the milk, turning it into a gel.

Three Mutopia Pods at Maker Faire Bay Area

Three Mutopia Pods at Maker Faire Bay Area

The Flaming Lotus Girls are a “female-driven, volunteer-based group of artists who have been making kinetic, mechanical fire art since 2000.” They’ve brought awesome, fiery installations to three previous Maker Faire Bay Areas, and this year they are bringing three of their stunning Mutopia Pods. Mutopia in all its glory is “a spiraling sculptural installation […]