Hardware

I2C Rotary Interface

https://www.adafruit.com/product/5752

Knobs

https://www.adafruit.com/product/5538

Encoder

https://www.digikey.com/en/products/detail/bourns-inc/PEC11R-4215F-S0024/4499665

Wiring

https://cdn-learn.adafruit.com/assets/assets/000/122/296/original/adafruit_products_metroStemma_bb.jpg

Tutorial

https://learn.adafruit.com/adafruit-i2c-quad-rotary-encoder-breakout?view=all

Sample Code

https://github.com/Prototyping-Studio/demoBoardPublic/blob/master/encoder_demo/encoder_demo.ino