ghinson said:
I'm made the switch. Dying to get out there and experiment. Of course, we're having a mini-blizzard today, so it'll have to wait. But. I'm anxious to find a way to automate a pivot around a subject. It's hard to do in GPS mode alone, requiring steady, consistent pressure on both joysticks.
I suppose the downside of HL pivot/yaw is that the home point will be the center point (so I'll have to move).
Oh ... I may have misunderstood. I thought you wanted the Phantom to pivot on it's own vertical axis as it returns to home point. Sounds like you want it to fly a circle around some object, while keeping the object in view. That will require some skill ... it's not going to be automatic.
As posted above, if you want to use HL, you MUST be in GPS mode. Flying a circle around an object in ATTI mode will require even more skill -you'll be using the RIGHT stick to maintain both it's lateral motion (left or right) and it's distance from the object (forward input - otherwise it moves away from object on a tangent to the circle), and the LEFT stick to maintain the direction it's pointing (yaw).
As for flying in HL ...
First off, you're correct, the object will have to be at the home point (you can reset the home point while in flight with the S2 switch - see manual or
http://www.phantompilots.com/viewtopic.php?t=6542 ... but be careful in choosing the home point in flight - remember, if you have to go RTH, that's where it's going to go).
Second, the Phantom will need to be at least 10m away from the object/home point.
Once you've flown the Phantom into position with the camera pointed at the object and are in HL, pushing the RIGHT stick right or left will cause the Phantom to fly in a circle around the object ... HOWEVER you will find that the Phantom will not stay pointed at the object. You will need to constantly be using the LEFT stick to yaw (pivot) the Phantom so that it stays pointed at the object. HL does not care or control which direction the Phantom is pointed. The only orientation it's concerned with is toward or away from the home point, and 90° left or right of the line from the home point to the craft.
Same is true with CL. It doesn't care which way the craft is pointed. It's only concerned with the directions established during its pre-flight, and flies in accordance with those directions. If it's pointed north in pre-flight, you can yaw it to face any direction you like, but pushing up on the RIGHT stick will always send it north.
There are other posts on the forum where folks have worked at doing what you're talking about - flying a 360 around an object while videoing it. It's certainly doable, but takes practice ... definitely not automatic. See
http://www.phantompilots.com/viewtopic.php?f=7&t=6564&hilit=statue. There is one lone post therein which claims using HL will keep the Phantom pointed at the center of the circle. Others haven't had the same experience and the post seemed mostly ignored. I don't now why it would work as the basic premise of HL and CL is to ignore the craft's orientation.
I tried it once while standing at the home point and managed to keep myself in the camera's field of view, though not centered. But I was watching the Phantom, not my phone (hardly visible in the sun), so telling exactly where the camera was pointed was difficult. I imagine it would be much easier from an FPV perspective.