Replies to This Discussion

DeveloperPermalink Reply by Michael Oborne on March 3, 2012 at 10:26pm

just a few points
by default airstart is not enabled
# define ENABLE_AIR_START  DISABLED

so the question is, where you using the default or not?

 

if you rebooted in flight without airstart enabled i doubt it would recover, as the gyro and accell calibartion would fail

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Permalink Reply by Andke on March 4, 2012 at 7:27am

If I enable air start , how should I calibrate the AHI and save it ?

- My primary goal, is not to void power glitch, as I already use redundant voltage regulators, but to be able to boot the plane without placing it perfectly level first.

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DeveloperPermalink Reply by Michael Oborne on March 4, 2012 at 3:52pm

the planner has an action " calibrate_gyros" which can be used to do this.

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Permalink Reply by Andke on March 5, 2012 at 12:35am

Thank you.

"is that in terminal/setup" , and - "does it require ENABLE_AIR_START ?"

I tried to find such feature earlier, with no luck. 

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Permalink Reply by Andke on March 11, 2012 at 4:51am

please explain how - I looked all over APM Planner 1.1.47, not able to find it.

hoping to calibrate AHI list like an multirotor, once, then be able to start without placing the plane level each time.

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Permalink Reply by Andre Meier on March 22, 2012 at 10:08am

actually anybody knows how to set "ENABLE_AIR_START" at the APM2 and what does the Groundstart pin does?

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Permalink Reply by Veikko Vierola on March 4, 2012 at 4:43pm

Is there any reason why one should NOT keep the  define ENABLE_AIR_START ON all the time?

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DeveloperPermalink Reply by Michael Oborne on March 4, 2012 at 4:57pm

only if you know what your doing. idealy you should do a calibration before each flight. because of temperature, pressure and all those other factors.

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Permalink Reply by Veikko Vierola on March 5, 2012 at 10:06am

Could it be possible that when you do the normal calibration during power on the APM would also do the "calibrate_gyros" procedure for the ENABLE_AIR_START?

By the way, should I install a dedicated capacitor to the power line to ensure power if short power out cut happens. Or is there some sort of capacitor already installed on the APM board?

Could I just install the capacitor between + - of any free servo input/output port?

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Permalink Reply by Veikko Vierola on March 5, 2012 at 3:07pm

Addition to my comment: this is what I meant:

http://www.hobbyking.com/hobbyking/store/%5F%5F16223%5F%5FTURNIGY%5...

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Permalink Reply by John Bailey on March 5, 2012 at 10:30am

I had mine re-boot in flight.  Switched to manual, it gave me control right away (thanks).  Tried stabilize mode and plane wanted to roll left in a big way.  Landed in manual without incedent.

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Permalink Reply by Andke on March 5, 2012 at 12:30pm

do you know what caused the reboot ?

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