I started drafting a few cake ideas for Robotto Otto’s first birthday when my husband Allen nonchalantly mentioned that I could not make a robot cake without some electronics! My knowledge of circuits, however, ended with grade school science.
Needless to say, we decided to divide and conquer. I added the lights into the cake design and Allen headed off to RadioShack. Allen created a series circuit with three LED’s, two nine volt batteries, a switch, a bunch of wires, a project box, some solder, and a bit of electrical tape.
(he totally wrote this section, see my aforementioned self proclaimed electronic ignorance)