Ubertooth
- For docs go to the source. Lots of outdated info floating around the Internet: https://github.com/greatscottgadgets/ubertooth/
- Yes, first step is to update the firmware.
- hardware: various all over the world, Amazon too. Cheapest (2017, $120 shipped): https://www.sparkfun.com/products/10573
- You will also want a normal bluetooth interface. Built in, or "Amazon Basics" work. I like to have a dedicated one.
Setup: