Newbie Ardupilot ?

Hello!

 

So if I understand the Ardupilot system the system doesn't have the ability to refrence terrain that increases or decreases in altitude?  So you set the altitude up so that it remains at a given altitude and hopefully the terrain doesn't change enough to interfere with the planes flightpath.

 

 

Thanks!

Dean

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Permalink Reply by Toby Mills on January 4, 2012 at 6:18pm

Yes, that is correct, the APM is not terrain aware, but the mission planner can reference Google elevation data. If you plan waypoints in the mission planner, you can hit the Elevation graph button to tell you if you are going to collide with the earth. The mission below would not be a success...

Permalink Reply by Ellison Chan on January 4, 2012 at 6:24pm

Won't the sonar be be used in this situation to keep an Arducopter from hitting the ground?

Permalink Reply by Toby Mills on January 4, 2012 at 6:29pm

sorry, you posted in the Arduplane forum not the Arducopter.
I'm not sure what the Arducopter would do in this instance, but I'm pretty sure if there were any trees along the route, you would run into them. A sonar is not going to protect you from that.

Permalink Reply by Ellison Chan on January 4, 2012 at 6:48pm

Oops.  Anyways, it's a good test.  I haven't done it myself, but I seen video, where the Arducopter will follow the terrain below it when obstacles are below it.  It will add the elevation of the object to the altitude hold value.


3D RoboticsPermalink Reply by Chris Anderson on January 4, 2012 at 6:46pm

If you click the "Verify height" box, the Mission Planner will use Google elevation data to maintain a relative altitude over the terrain. 

Permalink Reply by Toby Mills on January 4, 2012 at 7:04pm

Chris, does this actually work like that?

When I do this I just get a warning about altitude and it doesn't actually adjust the Alt fields?

Permalink Reply by Don Brooks on January 4, 2012 at 9:12pm
Same here. I've flown a mission over a small mountain before but had to do it with absolute altitudes to make sure to get over 

3D RoboticsPermalink Reply by Chris Anderson on January 4, 2012 at 9:23pm

If it's not working for you, file an Issue and we'll have the developers look at it.

Permalink Reply by Don Brooks on January 5, 2012 at 3:19pm

Filed as issue 475

Permalink Reply by sufendi on April 18, 2012 at 11:49am

sorry ,i have the same problem. and am using "amp planner 1.0.40 build 1.0.4218.13631". can some one give a solution? thanks.


3D RoboticsPermalink Reply by Chris Anderson on April 18, 2012 at 12:31pm

Sufendi: That's ANCIENT! Where did you even find it??? The current MP (1.1.69) is here. 

Permalink Reply by sufendi on April 18, 2012 at 12:34pm

thanks you so much for the information. thanks. i will download it now. 

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