The follow cam proof of concept is everywhere & nowhere. The problem is flying was only possible when someone else paid for it. Without any money, it's going to be a short effort.

Being a spare part application, 1 of the tiny servos from the Blade CX2 will be glued to the NTSC camera for pitch control. The Blade CX2 was an intriguing toy which never flew because it required a lot of trimming & its brushed motors were terrible.

The servo cam will be attached to the underside of a microquad. The microquad needs a better means of vibration damping, to use beat up propellers. It's getting near adding ballast like everyone else.

The camera will track a dual marker baton. The entire baton may actually be colored, making for a dumbbell marker that is easily isolated.

2 voltage regulators for powering the 5.8Ghz transmitter, & servo will be attached to the microquad. The camera is powered by the 5V flight computer rail, which originally was to power the PX4flow. The camera broadcasts video to the ground station, which combines it with telemetry to get a position for broadcasting back to the flight computer over bluetooth.

The ground station needs to record the video as well as scan it for position. The only spare part is a laptop. Since the follow cam's mane mission would be capturing running, the need to carry a laptop has been the showstopper.

For the 5 guys with jobs, the long reigning Odroid is finally dead. You need to be buying the Minnow Max. Unlike the boat, the Minnow has a dual core 1.3Ghz. It should be far ahead of the quad core ARMs. Personally have gotten nothing but grief from quad core ARMs.

Jack, what about some kind of active transponder instead of a visual tracking system? I saw this in the newsfeed and thought about your work:

http://arstechnica.com/gadgets/2014/...ear-rfid-tags/