I am using the ardupilot 2.7.1, with airspeed sensor, and XYZ thermopiles.
My RX and TX is a futaba 2.4ghz radio
I am using a aircraft with elevators, and rudder control
I have already had many successful flights in stabilize mode and it is working perfectly. However whenever i switch into FLY_BY_WIRE_A the aircraft will stabilize again perfectly, but I do not have any control over it, if i say put full left rudder on my radio the rudder servo will only move very slightly and as a result when I am flying in the air i basically cannot turn or pitch the aircraft. I have very little control as to where i want to turn or pitch it. I can control the throttle as I should in FBW A, however before trying auto throttle in FBW B, I would like to resolve this issue
I was wondering if this is a problem with my radio trims on the AP? Or something else? I was not using the GPS recievier when flying in Fly by wire A, as i dont think I need it.
Also I am basically using the standard header file, with some modifications for thermopile placement, gps etc.. aswell as setting the radio max/min limits as read from debug mode 1.
Any help would be greatly appreciated
Replies
Sorry if this is too basic to be useful but i had the same issue and dialling up SERVO ROLL P in the PID tuning file fixed it a treat. The default value in 2.7.1 is 4 which i understand is way lower than the old versions.
Hope this helps, and if you can get around to trying the possible bug in 2.7.1 i have posted i would appreciate it!.
Cheers
D
Regarding the switching back to stabilize, I am currently using a 6CH futaba radio and dont have a 3pos switch, so i am only switching between pos 1, and pos 3. So when i was testing stabilize, i was only switching between manual, and stabilize that I set to be pos 3
For more information when i am testing FBW A on the ground, i do notice a very very small movement in response to my radio inputs, so when i was testing i could kind of make a turn if there was not too much wind, but it was nowhere more than a 5deg bank., and same with pitch.
AP_Config.h
You're right, you don't need GPS connected. Question, when you enter FBW A, and you don't have much response, can you go back to stabilize and it still works?
If I don't see anything from the config files, I'll give you some debug code to try.
Jason