Replies to This Discussion

3D RoboticsPermalink Reply by Chris Anderson on November 27, 2010 at 8:37pm

Yes, the throttle should come back on when the aircraft is at the requested altitude and speed. Your cruise airspeed is indeed very low for a Skyfun. I'd set it to at least 3x that, and ideally 5x.

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Permalink Reply by Dean on November 27, 2010 at 8:50pm

Chris, thanks once again for your help. Am I correct in thinking that the RTL altitude is set "automatically" to some value above the launch altitude, and that I shouldn't have to worry about setting it somehow? As for the cruise airspeed, I bumped that up in my APM_config.h file. Per your suggestion, I will increase it even more.

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3D RoboticsPermalink Reply by Chris Anderson on November 27, 2010 at 9:10pm

Default altitude is set in the Mission Planner:

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Permalink Reply by Dean on November 27, 2010 at 9:14pm

So this altitude gets applied in RTL mode as well as Auto mode. I was not aware of that. And if I remember right, the units in this box are meters?

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Permalink Reply by Carlos on March 6, 2011 at 5:21pm

Guys, I too am having this problem and I would appreciate any advice.

 

When ever I switch to Auto my motor switches off completely, it does an wonderful job of keeping the plane stable and trying to get to its waypoints, but doesn’t get very far due to no power.

 

I've tried setting the Airspeed m/s higher in the AMP PID config and tested on the ground, but not had any luck.

 

I would really appreciate any help or pointing in the right direction.

 

Thanks

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3D RoboticsPermalink Reply by Chris Anderson on March 6, 2011 at 6:19pm

Might be any number of things, including a reversed throttle channel and accidentally setting altitude to zero.

Did you do a radio setup in the CLI?

Does it work in RTL mode?

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Permalink Reply by Carlos on March 7, 2011 at 7:23am

Hi Chris

 

Yes, have performed the radio setup in the CLI and seems to be ok, would you like to see the results?

 

It doesn't work in the RTL mode either. I have also reversed the throttle channel and no change.

 

I ran the Radio test in the CLI and I can see in "in channel 3" the data moving up and down, how ever on the "out channel 3" I see 0 until I get to mid throttle then 100 at mid throttle then going past mid throttle it goes back to 0. The results are reversed if I disable throttle reversed, so it goes 100 - 0 - 100. Does that indicate to you that there is an issue? or is that normal output data?

 

Kindest

 

C 

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DeveloperPermalink Reply by Doug Weibel on March 7, 2011 at 8:05am

That is not normal output.  Try the radio setup in CLI again and make sure you cycle the throttle stick through its full range.

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Permalink Reply by Carlos on March 7, 2011 at 1:33pm

Thanks Doug, I didn't think it was normal.

 

I have have been through the Radio setup in the CLI and i'm still getting the same output.

 

Any ideas?

 

Permalink Reply by Erik Hatch on March 19, 2011 at 4:42pm

chris

when i switch to RTL, my throttle cuts to zero and the aircraft does a right turn to come home. default alt is set to 50, but the airplane glides well below that. i need to go back to manual mode to recover. home location and mouse location altitudes are at zero in APM planner.

 

Stabilization mode works perfect today. flew the HawkSky today in 10+ winds.

Thanks

Erik

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Permalink Reply by Erik Hatch on March 19, 2011 at 5:40pm

checked my flight logs for today and im seeing altitude of 1992 which it way too high. this would make sense that the APM makes the plane descend and cuts power, but why is my altitude reading so off?

thanks

erik

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Permalink Reply by DaveyWaveyBunsenBurner on March 7, 2011 at 6:51pm

Strange mixer or other setting on your TX?

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