Posted by Jamie Nelson on November 27, 2014 at 2:11pm
I have just completed my first test flights. I was very pleased overall with the performance. It's an octo 1.2m across and seems very stable without any calibration. Throttle midpoint seems spot on.Issue is understanding flight modes. Started in stabilise and all seemed fine. Then into alt-hold it wasn't much different except I couldn't ascend. Same with loiter. Descending was fine but pushing stick right to the top didn't allow it to rise.Before flying I did change various settings when doing a garage test just to get it off the ground so have the idle, low, mid and high values set. I may have reduced the high too low. I read that if throttle is between 40%-60% then it will just stay where it is. I may have it too low.But stabilise allows a rise. I think I know where to look but parameter options seem vast so please tell me if I'm on the wrong track :)Thanks for any help.
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If the craft has enough power it should hover with the throttle between 40% to 60%. If it doesn't raise throttle mid some. IMO high throttle should be set to allow you to use all the power you have available. I am not aware of a reason to lower it much below the full potential of your power system.
Thanks for the input. I have resumed work on this now. Sorry for the late reply. I upped the power and so now the full throttle sends it bolting upwards in stabilise mode so fast. (I know it will be much less with camera payload).
Conversely switching to GPS mode if I increase throttle it seems very reluctant to climb. I feel I need less acceleration in stabilise and more in GPS. I'll need to read through a bit more on this!
Replies
If the craft has enough power it should hover with the throttle between 40% to 60%. If it doesn't raise throttle mid some. IMO high throttle should be set to allow you to use all the power you have available. I am not aware of a reason to lower it much below the full potential of your power system.
http://copter.ardupilot.com/wiki/ac_throttlemid/
Thanks for the input. I have resumed work on this now. Sorry for the late reply. I upped the power and so now the full throttle sends it bolting upwards in stabilise mode so fast. (I know it will be much less with camera payload).
Conversely switching to GPS mode if I increase throttle it seems very reluctant to climb. I feel I need less acceleration in stabilise and more in GPS. I'll need to read through a bit more on this!
You say that mid trottle is too low?, if you put in hover your throttle stick is too low?