These are my new VR trackers. This DIY build of SlimeVR trackers can be assembled with (maybe*) no soldering. If you’re like me and want to put together your own set of SlimeVR trackers, I’ll tell you about the parts I selected and show you my case design. Parts My part selection uses fewer parts than some others I’ve seen. The Adafruit feather microcontroller (MCU) boards often include a LiPo charger and “fuel gauge” IC.