A while back I found these cool old display tubes that show scientific symbols.  I finally got around to building a little robot that uses the “volts” and “ohms” symbols as though they were different stages of eyes during a “blink”.  Hence his name.  There is a home made cam mechanism in his head that causes them to switch back and forth.

Materials:

Floor polisher, vacuum cleaner parts, baseball bats, fence caps, ski bindings, wooden gear, LED’s, motor, golf caddy cart parts, circuit board.