Using DC motors to power computers

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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 HomoFaciens.de.

Check out the video after the break.