Hello,
I have an APM1 in my Skywalker and having some issues. I have the most recent ArduPlane firmware.
Manual Mode seems to be good, and all the sensors seem to be working as expected. GPS, Airspeed, and magnetometer.
- First thing that doesn't look right is Flight Mode 6 is disabled and I am unable to change it.
- Second thing is when I switch from Manual to Stabilize (or any other mode) the motor spins up to about half throttle.
When in stablize mode, the servos seem to work as expected. It looks to be stabilizing...but not sure why the motor is spinning up.
I have reinstalled firmware a couple times. With the same results. One of the installs...it seemed to be working well for a while...then about 20 seconds later the motor kicked on.
I have also had random instances of servos doing what they want in stabilize.
Can anyone point me in the right direction?
Thanks,
Ross
Replies
I have the exact same issue - v 2.34 and 2.40.
It is generally stated that in stabilize and FBW-A the throttle is passthru, but this is definitely not the case.
The THR_MIN parameter is applied in both modes and when switching into these modes it is not possible to get the throttle lower than this value.
Is this the way it works or am I missing something?
In my particlular application I do not want autopilot to throttle back to less than 30%, but I do want to land in stabilze mode and need to be able to close the throttle completely. How can this be done?
Thanks,
Purple Dragon
To anyone who the throttle going to about half or so problem when switching to Stabilze...I had and just solved this problem. I had set my min throttle to 45%, so in Stabilize it went to that. Reset your min throttle to 0%, problem should go away. I personally do not like that stabilize obeys the min throttle PID. I set mine to 45% so that if I turn downwind (I do not have an airspeed probe) the throttle will not reduce because a strong tailwind makes the APM believe the speed of the plane is fast. As far as I know the throttle will vary to maintain a groundspeed. Does anyone know if this is true?
I think we should add a PID that allows idle only when commanding a descent, and a PID that allows some other min value for cruise flight so as to prevent airspeed ever from dwindling.
Maybe there is something I don't understand, but it worked for me.
Ted
Ross,
flight mode 6 is hardware manual, and is never changable.
given that, is your manual mode what you are expecting it to be.
also, what receiver/transmitter are you using? your esc should be pluggd into output 2 or 3 on the apm, depending if your numbers start from 0 or 1
Stabalise had throttlew passthrough, so at this point in time i would check your radio connection to the apm, and your esc output as above.
Yes. I got it from the mission planner today. Anything else I could look at?
Thanks for your help.
The version from Mission Planner should be fine. Did you get it from there? There was a cutting edge version in the github that has problems with flight mode1 and flight mode2.