Using the great “Physical Computing” tutorials at nyu.edu I was able to put together a MOSFET that allows the low voltage Arduino to control a higher voltage (6v) circuit. Next up, Josh Bressers suggested I try an H-Bridge circuit that will allow the Arduino to additionally dictate the direction the motors turn in.

Behold! The worlds worst quality YouTube video! Anyway, due to my lack of skill/video equipment, I’m going to call this good enough after two attempts to capture it legibly. In a nutshell, it’s an Arduino and a 20 character x 2 row backlit LCD with a contrast knob. I’ve got several of these as spare [...]

Thanks to a handy suggestion from Raster [of Twitter Monkey fame ] this video clip features use of the piezo speaker (also used in the Arduino Happy Birthday Emitter) in order to better convey the action in the video clip.