Replies to This Discussion

Permalink Reply by Jonathan M on February 27, 2012 at 11:10am

Interesting that velcro solved it.  Can you snap any pictures of how you mount it?  I have used velcro in the past, and it definitely still exhibited the leans (could be my motor/prop setup).

I am close to getting rid of the leans, but not perfect yet.

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Permalink Reply by Damian ONeill on February 27, 2012 at 5:38am

Hi,
If someone has the time I need a quick lesson in tuning via Ch6. I have searched high and low for anything other than the Wiki instructions.
As I have my 6 modes plugged into ch6 I am reluctant to try and tune it this way due to what may happen if I have misunderstood? This seems like the obvious, fastest and most accurate way to tame anything attached to my APM 2.
I understand how to set it up in Mission Planner and set the range etc, but a quick point form guide would really help me right now to tune loiter and WP. I have Alt Hold pretty close.

I have APM 2, XBee and Sonar on a quad.

I use the bubble on attached to my blade balancer to get leve
.

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ModeratorPermalink Reply by Graham Dyer on February 27, 2012 at 6:09am

It is how I tune my quad with great results (and I wrote the method 1 part of the wiki :)) If you want I can write a quick how-to and maybe others can improve on that?

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Permalink Reply by Marko Kaariainen on February 27, 2012 at 7:34am

Hi,

Today my gyro was going slow. I fly my hexa with no problem. Then i go home and plug usb and gyro go crazy! After that gyro working very slowly. Is this software or hardware problem/bug?

Video

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Permalink Reply by Balloon on February 27, 2012 at 8:08am

You're should setup level to after erase and reset in CLI.

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Permalink Reply by Marko Kaariainen on February 27, 2012 at 8:51am

I've done this many times with no luck.

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Permalink Reply by arashi on February 27, 2012 at 10:28am

Marko

I had the exact same problem and tried everything I could think of.  The HUD would go crazy, then I would get a NAN error and it would lock up.  I couldn't reset in the CLI as I would get a bunch of misc characters mixed in and then it would lock up.

I finally loaded Ardupilot firmware on the APM2 to see if it was a hardware or software problem.  This confirmed that it was a software problem.  Everything was fine when running Ardupilot code, so I reloaded the Arducopter 2.4.1 and everything started working again.

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Permalink Reply by Marko Kaariainen on February 28, 2012 at 7:54am

Thanks for replying. I tried it but it did not work. Maybe magnetometer is broken.

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Permalink Reply by Damian ONeill on February 27, 2012 at 12:46pm

Thanks Graham I would appreciate that.
As Ch6 is already mixed on my JR9303 to achieve the 6 flight modes I got a bit lost. Is it ch6 on the APM? Can I make it whatever channel I want on the radio and just plug that channel into ch?? On the APM.
Don't know why I am getting stuck on this stage, I just need need a literal example of the physical setup (ie. plug this here, switch this etc).
Cheers

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ModeratorPermalink Reply by Graham Dyer on February 27, 2012 at 1:11pm

You need an extra free channel on your transmitter to use the CH6 fine-tuning function, you could use any free channel on your Tx but it must be plugged in to the CH6 option on APM. So CHx on Tx > CH6 position on APM.

This also assumes that the 'copter is fairly flyable/controllable and that the pilot is experienced enough to at least keep the 'copter at eye level for 30-60 secs.

Once plugged correctly you setup the option as explained in the wiki and then use that to tune your 'copter while it is actually flying or just landed.

I do Rate_P first (choose a value + & - around 30% of default, so for Rate_P set to low to 100 and high to 180).

Hover at about 1.5m (6ft) and bank the quad briefly left and right, then either land and turn the knob/lever that controls the channel or if you can fly and move it then do it, turn it up and down and choose the flying style which "feels" best to you. Higher might cause oscillations so back off a little until it flies without oscillations but isn't too sluggish.

Then do Stabilize_P, then Rate_I, then Stabilize_I.

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Permalink Reply by Damian ONeill on February 27, 2012 at 6:18pm

Thanks Graham,
Worked a treat. I got stuck as I hadn't seen the pins on the APM referred to as channels before so was stuck on the Rx channels

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Permalink Reply by Eddie Weeks on February 27, 2012 at 7:45am

Dude... I tried for hours triying to tune Loiter, with ch6... I give up...

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