Hi, Bought a cheap universal GPS Tracker TK102 for $40 the other day with the thought of mounting it to my Phantom. To save weight and to avoid mounting it on the outside of the Phantom, I decided to break the GPS tracker down to its core and ditch the battery. I managed to build it into the Phantom and get the necessary current from the F2 of the NAZA-M (see photo). It works great !!!