Republic's proton gyroscope is at present an impractical breadboard model, built mostly of transparent plastic, but even so it works well enough to prove the principle.
Ludwig sets up a rough, breadboard model of the circuitry with real transistors, resistors and other components.
AutoDesk Releases An Electronics Simulator Called 123D Circuits Hardware hacking often seems like black magic to the uninitiated, which is why 123D Circuits is so cool: it allows you to learn electronics using a virtual Arduino board and breadboard without blowing up capacitors or burning yourself with solder on your work table.
Sept. 10, 2013 - TechCrunch