CC3d tuning/issues - Page 2 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 10-05-2016, 03:51 PM   #11
Warbird_ace
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Re: CC3d tuning/issues


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Also, here's the LP forum post about the calculator with some other answers
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Old 10-05-2016, 04:00 PM   #12
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Re: CC3d tuning/issues

Wow, fail......

https://forum.librepilot.org/index.php?topic=333.30
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Old 10-06-2016, 09:09 PM   #13
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Re: CC3d tuning/issues

I found very nice videos on youtube on PID tunning (keywords: quadcopter pid tuning). Not only the explanation about each setting but also how to tune them depending on what your symptoms are, specifically for quadcopters. It proved very useful for when I was tuning my quad.

I'm a very graphical/images person, so anything I see sinks better than when I read it.
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Old 10-07-2016, 02:17 PM   #14
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Re: CC3d tuning/issues

Quote:
Originally Posted by Warbird_ace View Post
In my endless research to find answers to tuning a quad, I've stumbled across a couple links. Called "Tuning PID's the easy way", it apparently takes 2 simple numbers and gives you the rest of your PID settings. I'll be trying it this weekend for sure, but from what I've read it's pretty spot on.

Explanation of how to tune PIDs the easy way.
https://250drones.wordpress.com/cc3d...-using-optune/

2 Different PID calculators. I haven't been able to test them yet, but both have good reviews.
http://cncmodel.altervista.org/blog/...alculator.html
http://www.novaprogrammi.it/lptune/

For interest sake, LibrePilot also has an EasyTune option, here's the link for explanation sake.
https://librepilot.atlassian.net/wik...ay/LPDOC/TxPID


Hope this helps everyone, I'm looking forward to testing the calculator out and see if it will finally correct my drone issues
Nice! That's going to be handy )
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Old 10-07-2016, 05:50 PM   #15
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Re: CC3d tuning/issues

I should have posted it earlier, someone made a windows based program as well as an android app. For those occasions where cell/internet service is unavailable.

https://forum.librepilot.org/index.php?topic=333.15

scroll down near the bottom for the links
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Last edited by Warbird_ace; 10-07-2016 at 05:52 PM. Reason: found link
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Old 10-08-2016, 04:11 PM   #16
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Re: CC3d tuning/issues

That's very useful, thanks for sharing!
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Old 10-20-2016, 06:51 PM   #17
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Re: CC3d tuning/issues

I've finally had a chance to utilize this tool and get my quad all set up.
All I can say, is this really takes the guess work out of setting up all 9 PID values. I had to find a couple more tutorials since there was no user manual with the app. But it's really simple.
This is what I was able to interpret from various forums.

Initially use default setting for the PID numbers (under the Rate values, there should be 9), make note of the Roll & Pitch P values.
Using Librepilot, set up TxPID for "Roll Rate.KP"
Set the bottom adjustment value as the default roll P value. Set the top P value 3 times the bottom value (I learned the hard way, set mine way too high, couldn't get a good number before crashing).
Save.
Go into the PID settings, and zero every other value except Yaw. (Be very careful, will explain later). Save. Disconnect.
TEST FLY IN ATTITUDE MODE!!!!
Power up, bring into a stable hover, and slowly increase the P slider until stable oscillations occur. Land. DON'T TOUCH SLIDER!!!!
Connect, jot down the new P value.
Repeat for pitch.
Plug all into the calculator, and Voila, you get all your settings!

So, the reason I mention care with zeroing all other values, I did this, and my quad freaked out. Got a little oscillation, then shot to the stars, and did a quick roll, before I killed throttle and it crashed to earth. I'm not entirely sure why it does this, my initial thought was because the I's were "0", however if they're not, then it defeats the purpose of finding a UOV (unique oscillation value). I was able to obtain a decent P value before the flip, so all I can say is be extremely careful, and do it outside!!!!

So, to round out this long post, I plugged in the new values, and this thing flies like it's on rails now. No more drift, good solid feel, a little boggy on responsiveness but I can bump those up later on. And all it cost me was 10 mins. Great for beginners looking for a better feel in their machines.

Again, this is my interpretation, it works for me, but I've had a heck of a time finding any decent information, so hopefully this helps someone
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Old 03-11-2017, 06:39 PM   #18
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Re: CC3d tuning/issues

Back at it again, getting ready for flying season.
Last fall I had a particularly rough crash, ended up cooking an esc in the process. Over the winter I purchased a new PDB (with built in BEC's, and OSD). I also recently upgraded all my ESC's to LittleBee 20a's. I'm going through the re-programming phase, and while setting up the motors I can only get 3 to spin. Motor 2 will not spin at all, and even disconnecting the signal wire (from Channel 2 on the FC) will not generate a tone whereas every other wire will generate a tone indicating its receiving a signal. Plug motor 2 into channel 5, I get good tones.
Is it possible to burn out a channel on the FC? I'd like to not have to buy another one.
Also, my vTX is very hot to touch. It's a 12v model, and I always have the antenna attached whenever its powered on.
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Old 03-12-2017, 08:37 AM   #19
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Re: CC3d tuning/issues

Try lowering your total throttle input at top end. You may have a motor maxing out a lot quicker then the rest.
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Old 03-12-2017, 09:34 AM   #20
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Re: CC3d tuning/issues

I'm programming each channel separately thru LibrePilot. Each one starts up at around the same pulse rate, except this one doesn't start at all. I found it ironic that it also happened to be the same channel that got fried last year. Unless it's pure dumb luck and I got a bung ESC and put it on the same channel. But, I don't really believe in coincidences. I'll try swapping ESC's and different channels to see if I can get it to run.
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