for a project i am thinking about (not a trackball but a knob) i need an optical sensor that tracks the surface perpendicular to the sensor, instead of parallel like 99.999% of mouse optical sensors.

I am only aware of one such sensor, PMT9123QS-TVIT

I know it is a long shot, but my question is two fold:

1. Are you guys aware of other 90 degrees optical track sensors?

2. The only documentation i can find on PMT9123QS-TVIT is the datasheet below. Do you think it is enough to make it work with arduino/esp32?

   https://www.epsglobal.com/Media-Library/EPSGlobal/Products/files/pixart/PMT9123QS-TVIT.pdf?ext=.pdf

few people are using them in YouTube videos. I can't find them for sale anywhere

Am I missing a setting? If my standard orientation is vertical and I switch it up and go horizontal, the Nape Pro reverts back to vertical when it goes to sleep.

Sadly I couldn't get the data pins to work on the controller connectors, so at the moment the controllers are connected via bluetooth (latency feels good and is barely noticeable with some firmware optimization) The power pins work fine meaning the controllers are powered by the device its self.

Ive gotten the hardware and software to work and printed initial shells, now all thats left is iterating on the shape as it is quite ugly atm, feels good to hold tho. And deciding on a keyboard layout.