Replies to This Discussion

Permalink Reply by Al Ros on April 4, 2012 at 1:01pm

I am sure you have done this - but is the APM pointing towards the front exactly? You say you are in plus mode. Is the board pointing to that front arm and is that arm motor plugged into the correct APM output ?

Al

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Permalink Reply by Vernon Barry on April 4, 2012 at 12:55pm

you can certainly take off on an angle or move the quad to a surface that is not level and take off. AC does not record level unless it is commanded to.

Sorry, you are correct and I was simplifying the situation a bit. My point is, we don't know that in setup, he chose the correct X configuration and then hit level when the machine was truely physically level at the time. Also, with the reports of the yaw issues, you really want to set the magnetometer offsets right, but being that this is happening directly at takeoff, it sounds like a simple setup failure.

Again, the key takeaway is that you can doo all this testing, without props and have some assurance it will at least try to fly correctly before you go breaking stuff.

 

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Permalink Reply by Mark Zimmerman on April 4, 2012 at 12:59pm

Even I removed GPS to see it without GPS, no change. I did a lot of tests without props, no error I noticed, I checked props, motors, CW and CCW stuff... No idea

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Permalink Reply by Duy Pham on April 4, 2012 at 2:01pm

Have you done step 5 in http://code.google.com/p/arducopter/wiki/AC2_First?

Let follow this step to level your quad.

Anyway, post your quad pics for more details.

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Permalink Reply by arashi on April 4, 2012 at 2:23pm

You are using + configuration.  Did you  set it to + ?  I believe the default is X.

Also, if using plus, it the APM pointing to motor #3?  Is #3 CW?

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Permalink Reply by Chris on April 4, 2012 at 2:24pm

you list yourself as NY, NY I work in paterson NJ maybe we can meet up so someone can get a hands on look at whats going on.

let me know if you can get out that way during the week.

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Permalink Reply by James Y. on April 4, 2012 at 2:43pm

This kind of issue sounds typical of having the board oriented incorrectly.  Verify that the board is around the right way, and you have each motor plugged into the right port.

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Permalink Reply by Alpo Hassinen on April 4, 2012 at 9:59pm

Here is quite safe way to test copter: old matress. Then I tied a short line to the middle of copter, and other side through a matress, and there to a wooden stick.

I can freely test copter, motors and everything. In this picture copter is flying at a 15 cm altitude.  That is enough to make almost all preliminary tests. It is impossible to break copter!

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Permalink Reply by charles1317 on April 5, 2012 at 11:24pm

That's a great idea. A very easy way to tether your aircraft. I think I'll do something similar. Thanks!

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DeveloperPermalink Reply by Andreas M. Antonopoulos on April 4, 2012 at 10:19pm

I had the exact same problem . I had not done the "level" correctly.

When you are connected to mission planner and it is on a table or floor, is the horizon in MP level? or does it show a tilted horizon?

Re-do everything in the instructions, line by line I'm afraid...

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Permalink Reply by Mark Zimmerman on April 5, 2012 at 6:43am

Hi

If you mean when my quad is on the floor, it's gyro sensor shows 0 and 0, yes! I always see 0 and 0 for it.

I've already set frame to +

I've already managed to put front of IMU part to motor 3 and behid 4 etc.

I clicked on calibration/leveling on MissionPlanner which says I have 30 seconds, but I don't know what should I do during that. I just moved quad to all sides.

Could you explain MP level?

Thanks

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Permalink Reply by Duy Pham on April 5, 2012 at 9:57am

could not moved quad during MP level, this step calibrates sensors so it can know how the quad is level.

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