December 2009 Archives

The results of Shawn helping me work through the problem of having multiple button with several positions

I'm making a "Persistence of Vision" toy, which will show a programmed message in eight red light- emitting diodes. In the lab we have a roll of copper foil backed with a conductive adhesive. I used a knife to cut out a hand shape. (In this case, I found it faster to work this way than to use the vinyl cutter.) I covered a small metal container with a vinyl sticker to insulate the foil board from the conductive tin. I soldered some surface mount LEDs and resistors onto the copper.

Here is the hand after I drilled holes through the tin and soldered wires to the fingers. The wire on the bottom is ground.

This is the inside of the tin so far!