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Rotary Encoder (Part 4991)
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Rotary Encoder (Part 4991)

by chris_roth on Tue Jul 05, 2022 3:59 am

Hi
I bought two decoders (part 4991). One can be seen on the I2c bus when starting a scan(). The other one seems dead (on arrival)and is not seen. The only difference is made up by changing the decoders. Any idea?
Thank you
Chris

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Re: Rotary Encoder (Part 4991)

by dastels on Tue Jul 05, 2022 10:44 am

By "hanging the decoders" you mean switching which one is connected to the end of the STEMMA-QT cable? Repeatedly swapping them provides repeatable work/fail behavior?

Dave

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Re: Rotary Encoder (Part 4991)

by chris_roth on Tue Jul 05, 2022 10:51 am

Yes. I am not using a cable but a breadboard. But changing the two breakouts results in a working condition for one and a non-working condition for the other one. Apart from swapping nothing changes.

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Re: Rotary Encoder (Part 4991)

by dastels on Tue Jul 05, 2022 12:34 pm

Thanks.

Please email support@adafruit.com with a link to this thread, your order number, and request the replacement of one Adafruit I2C QT Rotary Encoder with NeoPixel - STEMMA QT / Qwiic.

Dave

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Please be positive and constructive with your questions and comments.