Taiss/AB 2 Phase Incremental Rotary Encoder 100P/R DC 5-24v Wide Voltage Power Supply 6mm Shaft 100P/R

I usually don't write product reviews, but this encoder works and it works well. I used it with the hardware quadrature decoder on the Arduino Due and even at 1000 RPM, it does not skip a pulse. I bought the 600p/r version and was under the impression that it was total quadrature rising/falling edges, but it turned out to just be the rising/falling edges of a single phase. This means that the resolution is actually 2400 total rising and falling edges pulses per revolution.

For those that need assistance here is what you need to know:1) they work best at 6v and up. This is only required to power the board and transmitting LEDs. If has nothing to do with the output. You can take apart and wire directly to the output of the 5v regulator and supply it 5V. But nothing lower.2) these are open collector NPN. This means the signal wire is connected to the collector of an NPN transistor. So you can use it with 3.3v, 5v, etc for control logic but you need to either tell your microcontroller to use a PULL UP resistor, or install your own pull up resistor that connects from the control voltage say 3.3V to the control/pulse wire. Then connect the grounds together and hook the control wire to the microcontroller input pin.I'm not certain the minimum voltage for the control transistor but I would guess anything over 1.5v would probably be fine.I use them on an esp32 and use the internal pull up on the input pins. The esp32 has a built-in counter up to 80Mhz that can be used for this purpose. These are smooth rotation, no exact stop points. So they work well for free spinning applications like motor control. They are not great for a knob because there are no detents. But if you wanted those there are other options. I put a pulley on it with GT2 belts to the wheels of my robot and they work perfect for that task.I hope this helps inform future customers.

Works as expected. Easily installed with a 3d printed mount and seems to count reliably.

Just as others said rewire the internals to bypass the regulator if powering from a regulated 5v supply. Mine actually worked fine without the rewire at room temps but when I used it outside on a cold day it dropped below the cutoff and no output. Quick rewire of the red power lead to the output of the onboard regulator and back in business.

Worked perfectly

Amazon always pounces on me to provide a review less than 24 hours after I receive a given item. So I'm giving half a review, which reflects the fact that I've only had time to evaluate half of my experience. Delivery was very quick! Build quality *APPEARS* to be good. Very good in fact, given this encoder's very reasonable price.But beyond that, I can't say much further. This unit came with no instructions and no technical data to answer any of my questions (such as maximum RPM, operating conditions, etc.). And I couldn't find this information about this encoder online.I'm still a long way from being able to try/use this encoder in a real project.I have high hopes for this encoder. But I can't give any hardcore information because it didn't include any useful

I heavily modified an old Ten Tec Argosy ham radio transceiver and this was perfect for the job. Slick as snot on a doorknob! VERY easy to turn so probably not good for mobile appllcations but other than that, just the ticket.

Second one I bought from this seller where the encoder, at complete random, starts to consistently report steps without rotational input. Useless for an instrument that's supposed to enable rotational accuracy.