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DeveloperPermalink Reply by Doug Weibel on May 23, 2011 at 8:27pm

Which hardware?  Which software?  Which mission planner?  Do you know if you set your altitudes as relative or absolute?

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Permalink Reply by Curt morehouse on May 24, 2011 at 5:43am

Ardupliot, Easy Star (stock motor, esc), added business card to rudder

Ardupilot 2.7

Not sure, will check when I get home, I think it is ConfigTool.zip - Ardupilot Config Tool

relative (it says Over Terrain)

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DeveloperPermalink Reply by Doug Weibel on May 24, 2011 at 10:58am

I'd start with seeing if you are getting sensible data from the thermopiles.  They are somewhat difficult to test.  You need to either get up on a roof or out in the middle of a large field.....

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Permalink Reply by Curt morehouse on May 24, 2011 at 12:34pm

I have the IMU.

I thought the altitude reading came from the GPS, not the IMU.

I'm confused when you say "get up on a roof or out in the middle of a large field".

I'm guessing you say to get on the roof to see if the altitude changes appropriately.

What is the large field for?

Or am I totally missing the direction of your help? (Which I appreciate greatly!)

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DeveloperPermalink Reply by jasonshort on May 24, 2011 at 1:34pm

Thermopiles are the IR sensors for seeing the horizon. If you don't have them, you can test indoors.

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Permalink Reply by Curt morehouse on May 24, 2011 at 1:57pm

Ok, so I will change the config to DEBUG the IMU as specified here  ... http://code.google.com/p/ardupilot/wiki/IMU

 

but besides values that change as i move the plane on the 3 axis's, what should i look for?   should the values be a specific number at a certain angle of attack?

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Permalink Reply by DaveyWaveyBunsenBurner on May 24, 2011 at 3:13pm

You may have the elevator channel revered. When you holdthe plane in FBW or Auto (not manual) mode does the elevator respond in the correct way?

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Permalink Reply by Curt morehouse on May 24, 2011 at 5:48pm

have not had a chance to test fly yet, but i found that i did have the rudder and elevator channels switched on the input and output, so the radio controls were still accurate, but auto pilot was not reacting correctly.

 

will post results after wind calms down and i test fly.

 

thanks!

 

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