How much energy could be gathered from the everday open-and-closing activities of doors on the ITP floor — without people having to change their daily routines one bit?
This is the “stepper” we borrowed at first. Only problem — not a stepper. It’s a DC motor. Got some nifty voltages out of it, and managed to make a light go blinky, but otherwise, not so helpful. Moving on.
This here’s a stepper Burton and I found at a fan-and-pump supply shop on Canal St. (very dirty, very unfriendly, yet very full of useful stuff). It’s a 5V stepper with 3 coils (so six wires).
And here’s the voltage out from just one coil — if we count right, that’s …35V?!
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