I have been struggling to get my Arducopter to set off to the first waypoint at the correct altitude and part of the problem is that I don' t know whether the various altitude values are absolute or relative to the home position. At the moment it behaves like a lovesick angel when I engage auto although it does set off in the right direction.
On the Flight Data page, Status window, the alt and altoffsethome are both 0 when at home. I assume alt is relative. What is the altoffsethome?
On the Flight Planner screen I have the following altitude data values:
Hold Default alt
Mouse location alt
I think they are with the exception of the last one all relative. Is that correct?
I am worried about the default altitude as that is very high (100m) but how do I change that and what does the Hold Default Alt checkbox do? When is the default used and how can I change it?
The alt abs figure sometimes is zero and sometimes 130 which is what it should be. Where does this value come from? Should I manually set it to the local absolute altitude which is what I thought I should do but I also changed it to 0 to see if that worked? Can I use the mouse to give me the altitude from the map?
What is the minimum waypoint altitude I can set - being a 'copter I would like to set it to between 2 and 5 metres - is that possible - does it navigate using GPS altitude which tends to be somewhat variable or pressure altitude?
Sorry so many questions!!