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

Perfect for what I needed. As described A++++

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

These have smooth effortless rotation, are seemingly precise and work as they were intended. Thumbs up. Make sure you us a pull-up resistor to signal terminals.

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

but for other applications im sure its great;.

Great item.

Used this for trim wheel control for MSFS2020.

This thing has no business being this good at this price. Smooth operation - 1440 pules per rev in standard quadrature configuration (2 phase). M3-.5 screws fit the mounting flange. Im feeding this thing 5 volts straight from USB, two encoders and a Teensy board drawing just .3 watts - whats to complain about.

I used the example code in the questions/answers section of this page, and the arduino was missing pulses. Sometimes the counts would sporadically go backwards. Slow revolutions would give hundreds of counts per revolution, but fast revolutions would give 30 counts.

No issues so far. Good price.