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https://www.adafruit.com/product/4640
Moderators: adafruit_support_bill, adafruit

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https://www.adafruit.com/product/4640

by tonescout on Tue Sep 21, 2021 8:08 am

Any ideas how accurate the positional control is / or does this have to be supplemented separately?

sorry I am a complete newbie to this :-)

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Re: https://www.adafruit.com/product/4640

by adafruit_support_bill on Tue Sep 21, 2021 8:34 am

The motor has a quadrature encoder where each channel puts out 7 pulses per revolution. The two channels are 90 degrees out of phase which gives you direction and a relative angular resolution of about 25 degrees. Your software will need to monitor the pulses to determine the direction and relative motion.

This article explains how these encoders work: https://en.wikipedia.org/wiki/Increment ... re_outputs

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Re: https://www.adafruit.com/product/4640

by tonescout on Tue Sep 21, 2021 8:59 am

fantastic - I will have a read!

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Re: https://www.adafruit.com/product/4640

by tonescout on Wed Sep 22, 2021 3:12 am

so it looks like this will not give me the fidelity I need for positional control, presumably I can source a different way to manage the encoder that can give me smaller increments of movement. I would prefer to use this over a stepper motor - but happy to receive advice otherwise

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Please be positive and constructive with your questions and comments.