I’m the proud owner of Totalphase Beagle USB 480 protocol analyzer. It helps tremendously in debugging USB code and the software which translates binary traces into human-readable form is free allowing sharing the trace files. Some time ago I needed to capture and share analyzer traces of certain Bluetooth dongles with developers of USB Host Shield 2.0 library. Instead of sharing the traces privately I decided instead to put them into another GitHub repo for everyone to see and learn.
At the moment, the repository contains just a handful of Bluetooth traces, captured on Windows and Linux machines. I will be expanding the repo with other interesting traces generated during my development. Also, if anyone wants a trace from a device not already in the repo – just ask.