04-10-2014, 01:05 PM
Abstracts: The Propeller, a mechanically scanned LED clock by Bob Blick. The clock is on a spinning piece of perf board, but it must get power.I thought of many ways to do this, including using motors (motor onehas its shaft fixed to a base, and motor two spins the body of motorone, generating electricity), making a rotary transformer. I decided to do it another way, taking power from the spinningarmature of a plain DC motor. In order to run the wires out of themotor, I removed the bearing from one end of the motor, leaving a big hole..