My tiny SteamVR compatible tracker.
It can be used with any of my devices to add full SteamVR support along with built-in software mirroring which basically will mirror flip the image so that it's perfectly usable.
Both boards are basically super-downsized Arduino Pro Micros with MPU6500.
You can safely transfer all of the components from those boards and it will work.
Works with the HadesVR software of course :
https://github.com/HadesVR/HadesVR/tree/main