I bought my Pimax 4k from a store that no longer exists. With the Pimax came bundled a tracking kit identical to that of the HTC link:
The Ximmerse Neon
Here’s a pic of mine: https://imgur.com/a/nH9SGsl
It came in a Pimax branded box, so I’m sure at sometime or another a possible colab was going to take place.
While the head tracking works a treat, the controllers/wands aren’t all that great. They work very similar to the PS Move controllers aside from being 100% plug and play.
Problem is, there’s no additional software for them. Steam detects them as Vive controllers which means there’s no way to calibrate them. You can still “home” them like you would other controllers, but mid game orientation can get wonky, with one controller more than the other. Something basic games like Beats Saber can get hard to play and Space Pirate Training is straight up impossible with the guns changing the direction it’s pointing all the time.
Best I can describe it is like extreme drift.
From what I can tell the best way to eliminate drift with all VR controllers is to run gyro calibration. Not having additional software, I’m hoping someone else might have the same controllers, with a solution.