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I FIGURED IT OUT! :-)

The problem was in these lines:

attachInterrupt(0,PinA,RISING); // set an interrupt on PinA, looking for a rising edge signal and executing the "PinA" Interrupt Service...

Aha! Thank you! It works now.

Hello all!

I am trying to use one of these "Anmbest" brand rotary encoders: https://www.amazon.com/gp/product/B07MW7D4FD/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

...with the tutorial...

I'd like to repurpose the 1/8" jack on the audio shield to be a Line In jack.

Should I be able to simply "cross-wire" the left/right/ground pads adjacent to the headphone jack to the...

Stumped on this one.

Took the "Guitar" example and lightly edited it for USB audio output:


$ diff...