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Altitudes in APM 2.68

Started this discussion. Last reply by Calle Apr 11, 2013. 6 Replies

Hi all,I'm flying an APM2.5 with version 2.68 of the code. I'm having an issue with altitude.I boot up the auto pilot and wait for it to get GPS lock. Often times, the altitude says around 20m or so.…Continue

Tags: zero, auto, 2.5, apm, altitude

Tuning the gains for auto mode for a plane

Started Jul 3, 2012 0 Replies

Hi all,I'm currently in the process of tuning the gains for my flying wing. I have an APM2 without an airspeed sensor. I'm able to get the servo roll and servo pitch loops working very well. The roll…Continue

Tags: altitude, plane, tuning, gains, PID

Specific descriptions of each flight mode

Started Jul 2, 2012 0 Replies

Hi all,Hi all,I'm interested in getting a more rigorous understanding of what each flight mode means, and how the autopilot behaves in each mode. I think it would be very helpful to have fully…Continue

Tags: control, loop, auto, manual, airplane

 

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Latest Activity

Calle replied to Will's discussion Altitudes in APM 2.68
"Hey, here it is: "
Apr 11, 2013
Calle replied to Will's discussion Altitudes in APM 2.68
"Thanks! That is some great information. Bad thing for me is that the APM is buried inside my plane, but I have a hatch so I can reach it from the side. Ill guess I have to redesign the resetbutton on the APM 2.5 case to get it a bit higher up. I…"
Apr 11, 2013
Søren Kuula replied to Will's discussion Altitudes in APM 2.68
"Hi, I never used any "zero home altitude" and my plane got the altitude right in auto both with absolute altitude and with over-the-start-location heights. I would have known otherwise, because my field is at 470 meters above sea…"
Apr 10, 2013
Fausto Coletti replied to Will's discussion Altitudes in APM 2.68
"Where is the "zero home altitude" button in mission planner ?   Thanks, Fausto"
Apr 10, 2013
Calle replied to Will's discussion Altitudes in APM 2.68
"So it safe to use the plane in all modes except maybe AUTO without bringing the computer to the field? I dont really like to always set altitude to zero and bring my PC and based on what Will says i dont have to? Regards, Calle"
Apr 10, 2013
Pieter replied to Will's discussion Altitudes in APM 2.68
"I have the same issue i think.Will do some more testing, maybe its just mission planner messing things up."
Mar 7, 2013
Will posted a discussion

Altitudes in APM 2.68

Hi all,I'm flying an APM2.5 with version 2.68 of the code. I'm having an issue with altitude.I boot up the auto pilot and wait for it to get GPS lock. Often times, the altitude says around 20m or so. My altitude above mean see level (which I think is what GPS uses) is about 20m so this could be correct. I then hit the "zero home altitude" button on the mission planner and my altitude does indeed move to 0. The problem is that when I go to fly in auto, the desired altitude of each waypoint is…See More
Feb 1, 2013
Will replied to Kevin's discussion Energy/Alt PID
"I'd be very interested in hearing an explanation here as well. Anyone? thanks!"
Jul 3, 2012
Will posted a discussion

Tuning the gains for auto mode for a plane

Hi all,I'm currently in the process of tuning the gains for my flying wing. I have an APM2 without an airspeed sensor. I'm able to get the servo roll and servo pitch loops working very well. The roll and pitch commands in FBWa and stabilize mode respond crisply with no oscillations. However, when I enter auto mode and fly through several waypoints, the altitude and pitch of the aircraft varies significantly (on the order 30 meters). The specific signs I'm seeing are as follows:I'm flying at 80m…See More
Jul 3, 2012
Will posted a discussion

Specific descriptions of each flight mode

Hi all,Hi all,I'm interested in getting a more rigorous understanding of what each flight mode means, and how the autopilot behaves in each mode. I think it would be very helpful to have fully detailed explanations of each flight mode and what it does and does not do. For instance, I have several questions to begin with that I would really like to know the anwer to:1. In manual mode, the autopilot has no effect on the control surfaces of the airplane. But in stabilize mode, the autopilot tries…See More
Jul 2, 2012

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