[Limpkin's] new business card

limkins-new-business-card

[Limpkin] decided to give the whole embedded business card thing a try. Here is his finished project, a low-profile mass storage business card that doesn't cost an arm and a leg. Sure, the $6 price tag could score him a hundred paper cards, but those don't light up like this one does! The main components on the card include an AVR microcontroller, a flash memory chip, and an ESD protection … [Read more...]

Basking in the vintage glory of InfoAge

infoage

Last weekend's Maker Faire wasn't only about the latest and greatest. Some of the groups there brought up the latest and greatest from earlier eras. InfoAge is a historical science and technology learning center based out of the former Camp Evans in Wall, New Jersey, and they really know how to put on a show using old technology. I made it to two booths at Maker Faire claimed by members or … [Read more...]

Octopus submarine is something out of [Jules Verne]‘s imagination

Octopod

Making an octopus on a Reprap or Makerbot isn't that terribly hard. There were dozens of these octopuses at nearly every Maker Faire booth with a 3D printer. These octopuses have almost become a right of passage for new owners of 3D printers, and serves as a wonderful reference object on par with the Utah teapot and the Stanford bunny. [Sean Charlesworth] wasn't happy with any old octopus; no, … [Read more...]

Seeed Studio shows off their wares

B Squares

Everyone's favorite Open Hardware store - Seeed Studio - was at Maker Faire this last weekend. They showed off a bunch of cool toys, oscilloscopes, Arduino shields and other hardware goodness, but one of the more interesting products was from their B Squares line. As [Colin] from Seeed showed us, each B Square is a small plastic enclosure about the size of a drink coaster. The corners of these … [Read more...]

Building a tilt rotor UAV

building-a-tilt-rotor-uav

We see a lot of quadcopters, and even the occasional octocopter around here. But this build does it with just two propellers. It's a tiltrotor build which allows the two upward-pointing propellers to tilt forward and backward. The real world equivalent of this UAV design that pops to mind is the V-22 Osprey. The motors are mounted on a beam running perpendicular to the direction of travel. … [Read more...]

Light bulb efficiency exhibit updated with LED bulb option

rotary-switch-light-bulb-testing

It seems like tinkerers are always being tapped to build or repair exhibit hardware. This time around it's [Dino's] turn. He's been asked to alter a light bulb efficiency demo so that it includes an LED option. The idea here is that you crank a generator to power different types of light bulbs. There's an ammeter built in, but possibly the best feedback is knowing how hard you have to crank to … [Read more...]