Dhananjay Gadre has created another great project! We recently built a LED spinning top with message display. Its an improved version of a similar top published by Elektor in their December 2008 issue. The Elektor top can be spun only in one direction. The synchronization required to print message on the LEDs arranged along the […]
PaperKraft links to this neat (and free!) Cubeecraft 2009 robot papercraft calendar. The face is changed with each month, and extra faces store inside the head.
USGenWeb, a genealogy site, has a really cool collection of penny postcards, organized by state. I love this image of native merchants from Alaska; the baskets are amazing.
With Bill Nye’s Paper Recycling Factory, recycling is literally (supposed to be) fun. Of course, DIY options abound. Either way, old newspapers are a much more environmentally-sound (and often safer) toy input than some things you’d find on store shelves. (via Treehugger)
USGenWeb, a genealogy site, has a really cool collection of penny postcards, organized by state. I love looking at the old structures – can you imagine driving on this bridge?
FIRST Robotics competition announced… via /. “FIRST (For Inspiration and Recognition of Science and Technology) has officially announced the 2009 FIRST Robotics Competition. This competition, started by inventor Dean Kamen, encourages high-school students to design and build robots to compete with and against other FRC teams. The competition overview video is available from NASA. This […]
Thermistors are pretty cool little items. They convert heat into resistance. By having the temperature available as resistance, you can use the value to control other things like circuits and programs. Photo cells do the same thing with light, and they are in lots of common devices from night lights to dimmers on clock radios. […]
