HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Mar 25, 2013, 03:41 PM
Registered User
Joined Aug 2012
49 Posts
THX!! i was starting to get worried xD
DannerD3H is offline Find More Posts by DannerD3H
Reply With Quote
Sign up now
to remove ads between posts
Old Mar 26, 2013, 07:32 AM
Registered User
deno6031's Avatar
Turkey, Izmir
Joined Oct 2011
839 Posts
Quote:
Originally Posted by Mortimer View Post
Don't generalize, only a few are affected.
I fly a 1600g quad with cheap plastic props for more than one year now without breaking a single prop in flight.
every prop is different, but i did not said anything bad, did i?

is it worth the risk?
deno6031 is offline Find More Posts by deno6031
Reply With Quote
Old Apr 01, 2013, 03:21 AM
Registered User
Joined Aug 2012
49 Posts
You are right, and i'm going to take your advise into account when i'm going above 1-2 m of altitude

But until then, i wil continue smashing the cheap plastic props. xD

But thx all of you
DannerD3H is offline Find More Posts by DannerD3H
Reply With Quote
Old Apr 25, 2013, 11:49 AM
Registered User
Joined Aug 2012
49 Posts
Hi guys!

I have now tried to fly some more and have found a problem.

When i move the stick up the quad moves faward as supposed to.
Even though i dosn't adjust the stick, just keeps it slight up, the quad slows down and eventually start to move backwards.
This makes it pretty much impossiple to fly as you can probably emagine xD

I have tried with and without aoutolevel and there is no difference

What the F*** !??! I'm really lost here...
DannerD3H is offline Find More Posts by DannerD3H
Reply With Quote
Old Apr 27, 2013, 02:20 AM
Registered User
deno6031's Avatar
Turkey, Izmir
Joined Oct 2011
839 Posts
Haven't you tuned your pi settings? Are you using them stock?

your problem is caused because of the lack of the i setting, turn it up a little bit more and that problem should go away. the i derivative is like a 'heading hold' system, it tries to hold the angle you have given with your tx inputs, if it's changing the angle by itself, then you need more i.
deno6031 is offline Find More Posts by deno6031
Reply With Quote
Old Apr 27, 2013, 11:25 PM
Posted as eflightdude 06-07
United States, IL, Peoria
Joined Aug 2012
133 Posts
Quote:
Originally Posted by deno6031 View Post
Haven't you tuned your pi settings? Are you using them stock?

your problem is caused because of the lack of the i setting, turn it up a little bit more and that problem should go away. the i derivative is like a 'heading hold' system, it tries to hold the angle you have given with your tx inputs, if it's changing the angle by itself, then you need more i.
PID, not pi. The "I" is for integral, not derivative (the "D").
Quote:
Originally Posted by http://en.wikipedia.org/wiki/PID_controller
A proportional-integral-derivative controller (PID controller) is a generic control loop feedback mechanism (controller) widely used in industrial control systems. A PID controller calculates an "error" value as the difference between a measured process variable and a desired setpoint. The controller attempts to minimize the error by adjusting the process control inputs.

The PID controller calculation (algorithm) involves three separate constant parameters, and is accordingly sometimes called three-term control: the proportional, the integral and derivative values, denoted P, I, and D. Heuristically, these values can be interpreted in terms of time: P depends on the present error, I on the accumulation of past errors, and D is a prediction of future errors, based on current rate of change.[1] The weighted sum of these three actions is used to adjust the process via a control element such as the position of a control valve, a damper, or the power supplied to a heating element.
There are several links on PID tuning, theory, how-to at the bottom of this post. http://www.rcgroups.com/forums/showp...10&postcount=3

This one seems to be the best of the PID tuning instructions: http://www.rcgroups.com/forums/showthread.php?t=1375728
jseyfert3 is offline Find More Posts by jseyfert3
Last edited by jseyfert3; Apr 27, 2013 at 11:47 PM. Reason: Added PID tuning links.
Reply With Quote
Old Apr 28, 2013, 02:30 AM
Registered User
Joined Aug 2012
49 Posts
Thnx guys i'll try going through one of thoese guides... again xD
I guess i f***ed something up the first time...
DannerD3H is offline Find More Posts by DannerD3H
Reply With Quote
Old Apr 29, 2013, 11:01 AM
Registered User
deno6031's Avatar
Turkey, Izmir
Joined Oct 2011
839 Posts
PID, not pi. The "I" is for integral, not derivative (the "D").


Yup my mistake


By the way, he's using the kk2.0, it has no 'derivative'.only pi
deno6031 is offline Find More Posts by deno6031
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Build Log Building my first Quad Hajile Scratchbuilt Multirotors 27 May 16, 2013 01:08 PM
Discussion My first quad. Completed, perfected, proven. chrisdafer Multirotor Talk 20 Apr 25, 2013 08:49 AM
Yippee! Got my first "real" quad coming!! TurboRacer Multirotor Talk 18 Feb 19, 2013 08:20 AM
Discussion My First Quad Finally Flies jseyfert3 Scratchbuilt Multirotors 14 Feb 05, 2013 03:15 AM
Discussion My First Quad Build Parts List Byrdman Scratchbuilt Multirotors 2 Feb 01, 2013 12:39 PM