Arduino Aquaponics: Rotary Encoders

Rotary encoders are interesting little devices.  At Iowa Aquaponics, we typically pair them with LCDs and create menus for controllers.  Rotary encoders can be thought of as a potentiometer and push button in one, but the rotary encoder does not have a limit to its rotation like a potentiometer does.  In other words, it can be rotated more than 360 degrees which allows you to create complex menus you can navigate with a single rotary encoder.

Rotary encoder

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