Using DC motors to power computers


Electric generator experiment from HomoFaciens:

The generators I am using are in fact geared DC motors, left over from a project with my sponsor RS Components. The modern abacuses being powered during my experiments are a Raspberry Pi Model, a SIMATIC IOT2020 and an Arduino Uno. A 2×16 characters LCD is used to display results. Two geared DC motors are on my board with the test setup

More info at

Check out the video after the break.

Join the Conversation

1 Comment

  1. The design does not add up. (I did not see the vid, only looking at article.) He seems to want 5W for the computing load. Say the DC-DC output is 5V/1A=5W, then on the other side, say zener holds input at 9.1V, give a generous 90% eff, then the current is 0.61A. Say the bulb given the 12V/5W rating you get 29ohm then even without the zener current, the V(bulb)=17.7V. Uh, how is he going to get anywhere near 5W? So it’s a cute demo? (Only don’t look at the schematics because the thing is super inefficient.) Is this supposed to impress us?

Leave a comment

Your email address will not be published. Required fields are marked *

Notify me of followup comments via e-mail. You can also subscribe without commenting.