Non-Mercury Tilt Switch
Non-mercury tilt switches are handy for reading when motion's passed a threshold (and much cheaper than accelerometers), but sometimes hard to find. Here's one Hatti Lim found. Thanks to Hatti for the link.
February 04, 2007RepRap and Using Friendly Plastic
The RepRap project is an open-source rapid prototyper. Seems like a very nifty thing to build in one's (well-equipped) basement. Sebastien Baillard from the project sent along some helpful links on using Friendly Plastic as well:
Thanks to Sebastien for the links.
December 02, 2006Schematic symbols for Illustrator
Here's a good set of schematic symbols for Illustrator, for those wanting to avoid circuit layout programs. These do a good job, and let you work in a familiar environment. Thanks to Tarikh Korula for the link.
October 29, 2006Decagon
Decagon sells environmental sensors for agricultural work: soil moisture sensors, pH meters, and more.
October 13, 2006AVR-USB
AVR-USB is a library for AVR microcontrollers to allow them to communicate via USB with no additional hardware. It's limited to a 12HMz clock speed, but if it could be overclocked to 16MHz, or if a Wiring or Arduino implementation could be clocked to 12MHz, this could mean Wiring/Arduino with no FTDI chip.
Thanks to Michael Ang for the link.
October 12, 2006