To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
I've now worn out two of these in a matter of a few weeks. They work just fine to start, but then the contacts seem to go bad and I start getting spots in the rotation where the phase of the signals changes such that the software reports they've stepped in the opposite direction. Starts with one spot, then gets worse with age. These are being used in a scroll wheel on my desktop (software emulates the middle scroll wheel on a mouse). Will be scrolling down a page, and then in the same spot in the rotation every time, will jump in the opposite direction. This is consistent. If I replace it with another one, it works fine.
Not sure if the issue is the fact that the rotary encoder has resistors installed already, but the rotation is not correctly registered when using it. I did try a different product bought on a different store, that is just the rotary encoder at 4 pulse per revolution and they work fine; while this one does not.
The breakout board has a common ground shared between the encoder ground pin and one of the switch pins. This makes it unable to join a button matrix. Works fine as a discrete switch but cannot be included in a matrix.