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Home › Magazines › 2005 › December › Build your own Rotary Encoder

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Build your own Rotary Encoder

Design tip

Published in issue 349, December 2005

Build your own Rotary Encoder
Here’s how to turn a small stepper motor into an encoder. After all, a stepper motor has permanent magnets inducing voltages in the rotor coils. Without going into too much detail, a stepper motor requires two signals with a phase difference of 90 degrees. The voltages generated per coil can then be said to represent a ‘Gray code’, that is, two voltages 90 degrees out of phase.

Click below to download a PDF copy of this article from Elektor magazine.

 

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PDF Article (U051275.pdf)
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Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.

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