Signswise Incremental Optical Rotary Encoder for Arduino 600P/R Wide Voltage Power Supply DC 5-24V 6mm Shaft Quadrature

Love it. Should have picked up some of these years ago...will be bookmarking for the future.

Great product

Great item.

I am using this with an arduino DIY preamp as a volume control (of all things).

Learned this the hard way - Not always reliable on 5V. We use a lot of these, and we always do 12V nowadays. The nice part though, is that the output is (well...cant actually promise this) is open collector, so you can use a pull-up resistor to your controllers voltage, which might be 5V, and run your inputs like that while still powering it by 12V. Check your individual encoder though, because only god knows how the PCB inside is configured, or you..if you open it or measure the outputs on a meter.