Saturday, April 10, 2010

Go Cart Fun

We got the plans out of a cub scout activity book. It wasn't all that comlicated to build. Ethan did most of the wrenching and drilling, I the cutting. We bought the wheels at the Habitat for Humanity store in Grass Valley. They have a lot of cool stuff there. The nuts, bolts and lag screws came from good old Sierra Hardware. Cool stuff there, too. The wood came from the back yard stash. An $8.00 go-cart! Watch out Mario!

Monday, April 5, 2010

Kiss Detector

Mom gave Ethan an electronic snap circuit kit by Elenco this last Christmas. Very fun, very educational, for ages "8 to 108." Anyway, we are doing project #246, a 2 finger touch lamp which consists of an npn transistor (npn?), a couple of resistors, an LED diode, power source and a kiss, or bodily bridging of contacts, if you will. Ethan came up with the idea of using a kiss.

If you have a child who is interested in the physical sciences, I recommend this kit. It's as interesting for parent as for child. The project illustrations make it simple to build any circuit listed. If you don't believe, I can even build a lie detector to prove it.