Michael writes – At the outset, when designing NadaNet, I envisioned that it could be used to support parallel computing on Apple II machines. To add more processors and save space, I decided that I would package several Apple //e main boards together, without keyboards or peripheral slot cards. (I didn’t disassemble the Apples myself, […]
Here’s an open source random bit generator, source and schematic included… Link.
Common packaging styrofoam is actually puffed polystyrene, the same polymer that’s used to make things like CD cases and plastic model parts. When acetone is used as a solvent, the expanded polystyrene will easily dissolve and you’ll be left with a liquid acetone/polystyrene solution. As the acetone evaporates, the polystyrene becomes increasingly viscous: first pourable, […]
SLK Electronics has a piece on their site about breaking down a DeWalt 36V A123 high-power Li-ion batteries to make your own battery configurations. This (and several other related articles on the site) is gear towards electric model planes, but is obviously applicable to any application. Dissecting DeWalt 36V Packs (A123 Systems) – [via] Link […]
BoosterVision is selling a 1-watt transmitter/receiver and CCD camera system for high-power rocketry. Not bad for $280. An included 12db Radome RX antenna increases range up to 15,000 feet. One Watt Hi-Power Transmitter / Hi-Gain Antenna System – [via] Link Related: Model, sport rocketry reference source – Link Estes educator – Free resources for model […]
As the name implies, Engineering TV is a series of webisodic programs dedicated to various technologies, techniques, and research efforts of interest to electronics, robotics and design engineers, or amateurs interested in these subjects. Engineering TV – [via] Link
I’m really surprised that telepresence/telerobotics hasn’t caught on more than it has. IRobot was R&Ding this tech nearly a decade ago. And the tools to make it happen have only gotten cheaper and more widely distributed. In this story, reverberating around the Interwebs, Ivan Bowman, a computer programmer, works from his living room in Nova […]
