Search found 27 matches

by zwiebacksaege
Tue Feb 04, 2014 10:54 am
Forum: Software development
Topic: Helicopter integration
Replies: 318
Views: 109683

Re: Helicopter integration

Hi guys, as far as I read this Topic it seems that MultiWii works only good with FBL Systems. Is there no Chance to take the FB of a traditional FB-head into account by decreasing the PID of roll/nick (so that Software doesn't fight against FB) and just realizing the leveling of the copter by the AC...
by zwiebacksaege
Fri Jun 21, 2013 8:26 am
Forum: MultiWii tweaking - flying experience
Topic: Multiwii 2.2 - GPS hold
Replies: 93
Views: 124560

Re: Multiwii 2.2 - GPS hold

up to now I got medium good results in position hold... when I change the position manually it even works holding new corrected position.. at least on a calm day... but changing just the heading results into problems amost everytime... it behaves as if he would not be aware of new heading... and dri...
by zwiebacksaege
Wed Jun 19, 2013 6:54 pm
Forum: MultiWii tweaking - flying experience
Topic: Multiwii 2.2 - GPS hold
Replies: 93
Views: 124560

Re: Multiwii 2.2 - GPS hold

As I promised I wanted to report my results of shielding the mag with some paramagnetic metal from old HDDs. The result was rather poor so that I really favorite some software-correction of the mag error due to throttle changes. I can really see some nearly linear behaviour of the heading error and ...
by zwiebacksaege
Wed Jun 19, 2013 6:47 pm
Forum: Ideas
Topic: Mag current compensation
Replies: 5
Views: 2315

Re: Mag current compensation

I fully agree to this nice idea. Although I think it might just be too much effort to really calibrate it over GUI or so ... I just wish some factor to set maybe via config.h which compensates this problem. I also agree that workarounds like this are not the way of proper engineering but for some of...
by zwiebacksaege
Mon Jun 17, 2013 8:33 am
Forum: MultiWii tweaking - flying experience
Topic: Multiwii 2.2 - GPS hold
Replies: 93
Views: 124560

Re: Multiwii 2.2 - GPS hold

sorry guys not time for testing up to now... family sucks every minute :-D
but i'm on it.. if someone else is faster... I would appreciate it :-)
by zwiebacksaege
Fri Jun 14, 2013 9:15 am
Forum: MultiWii tweaking - flying experience
Topic: Multiwii 2.2 - GPS hold
Replies: 93
Views: 124560

Re: Multiwii 2.2 - GPS hold

i'm planing to try it this evening.. will post the result then immediately
by zwiebacksaege
Wed Jun 12, 2013 8:34 pm
Forum: MultiWii tweaking - flying experience
Topic: Multiwii 2.2 - GPS hold
Replies: 93
Views: 124560

Re: Multiwii 2.2 - GPS hold

thanks.. I will try.
but I also considered those thin metal sheets you can find at every (old) HDD for magnetic isolation. since they are for free and I got plenty of old HDDs I will give them a try too.
by zwiebacksaege
Wed Jun 12, 2013 1:40 pm
Forum: MultiWii tweaking - flying experience
Topic: Multiwii 2.2 - GPS hold
Replies: 93
Views: 124560

Re: Multiwii 2.2 - GPS hold

so I got this 10° at full throttle boosts.. .this makes a big difference! It's nothing special that your copter circles wide around if you're getting complete heading mess at full throttle. meanwhile I tweaked my powerdistribution by hiding all the ESC feeding cables inside my frame-profiles. but th...
by zwiebacksaege
Mon Jun 10, 2013 10:36 am
Forum: MultiWii tweaking - flying experience
Topic: GPS Hold YAW
Replies: 0
Views: 788

GPS Hold YAW

Hello guys, have a strange problem: when going into GPS Hold, my copter sometimes manages to stay in position +/- 2 or 3m in good conditions without wind. But when he gets into some bigger correction-driftes he often starts turning over YAW axis constantly. Not oscilating or slightly drifting in YAW...
by zwiebacksaege
Mon Jun 10, 2013 10:22 am
Forum: Software development
Topic: GPS: combining flightmode-options
Replies: 25
Views: 8993

Re: GPS: combining flightmode-options

okay thanks for this information... i was not thinking of disabling direct flight controls nor of some unforseen consequences when losing sats.
So maybe just forget about this idea... at least for me :-(
by zwiebacksaege
Sat Jun 08, 2013 1:12 pm
Forum: Software development
Topic: GPS: combining flightmode-options
Replies: 25
Views: 8993

Re: GPS: combining flightmode-options

as far as I understood the code, the PH is also realized by the same code used for waypoint travelling...
so is no one out there to correct my code idea that I can test it?
by zwiebacksaege
Fri Jun 07, 2013 10:39 am
Forum: Software development
Topic: GPS: combining flightmode-options
Replies: 25
Views: 8993

Re: GPS: combining flightmode-options

so I guess the lines GPS_hold[LAT] = GPS_coord[LAT]; GPS_hold[LON] = GPS_coord[LON]; may be just changed to something like GPS_hold[LAT] = GPS_hold[LAT]+increment_rate; GPS_hold[LON] = GPS_hold[LON]+increment_rate; while I am too stupid to make a right expression for <increment_rate> as I don't know...
by zwiebacksaege
Fri Jun 07, 2013 10:17 am
Forum: Software development
Topic: GPS: combining flightmode-options
Replies: 25
Views: 8993

Re: GPS: combining flightmode-options

okay so I understand right: this AP mode is intended to work as some kind of changing the hold position but in your eyes it's not realized in a good way? or am I still misunderstanding this line of code? when I read your last sentense, you mean it would be nice to have the stick input as some kind o...
by zwiebacksaege
Thu Jun 06, 2013 9:32 am
Forum: MultiWii tweaking - flying experience
Topic: please someone explain BARO to me!
Replies: 6
Views: 2383

please someone explain BARO to me!

Hi guys... I was playing a little with my new board including a baro sensor. Now I wanted to check ALT_HOLD but i'm not sure what to do with throttle meanwhile. The code says there is some default deadband of 40 for throttle. Does it mean 40 from exact midposition of throttle or from the actual thro...
by zwiebacksaege
Thu Jun 06, 2013 9:24 am
Forum: MultiWii tweaking - flying experience
Topic: Multiwii 2.2 - GPS hold
Replies: 93
Views: 124560

Re: Multiwii 2.2 - GPS hold

Hi guys... same issue for me. I'm using a MEGA board with Sensor plate right on top of the ditributor-plate (maybe 3cm space). During the last days I had some problems with PH and wanted to check my MAG behaviour during flight. Through my minimOSD I can now observe that the MAG error is about 5-10° ...
by zwiebacksaege
Thu Jun 06, 2013 8:37 am
Forum: Software development
Topic: GPS: combining flightmode-options
Replies: 25
Views: 8993

Re: GPS: combining flightmode-options

you mean some kind of loiter? isn't it already inplemented in the 2.2 code? i thought so: /************************ AP FlightMode **********************************/ /* Temporarily Disables GPS_HOLD_MODE to be able to make it possible to adjust the Hold-position when moving the sticks.*/ #define AP_...
by zwiebacksaege
Sun Jun 02, 2013 6:52 pm
Forum: Software development
Topic: GPS: combining flightmode-options
Replies: 25
Views: 8993

GPS: combining flightmode-options

Hi guys, I recently got new hardware (finally!) and made first tests with GPS PH. Now I got some questions about the AUX-options. As far as I was teached I need to set ANGLE, MAG, and GPS PH in order to get the desired result (correct me if I'm wrong). Facing this I asked myself, why isn't all those...
by zwiebacksaege
Sun Jun 02, 2013 6:44 pm
Forum: Software development
Topic: List of problems in Version2.2
Replies: 58
Views: 20561

Re: List of problems in Version2.2

I noticed, that my settings for the AUX definitions where not stored when saving the settings. Anyone else got this?
by zwiebacksaege
Sat Mar 09, 2013 11:06 am
Forum: Software development
Topic: Is the D-term in the multiwii reversed...?
Replies: 21
Views: 5035

Re: Is the D-term in the multiwii reversed...?

noone to help me understanding this code?
by zwiebacksaege
Fri Mar 08, 2013 1:56 pm
Forum: Software development
Topic: Is the D-term in the multiwii reversed...?
Replies: 21
Views: 5035

Re: Is the D-term in the multiwii reversed...?

Hey guys, confusion about the source code again... maybe you can help me another time: As I interprete the last lines in the MultiWii.ino the PTerm for Level is (roughly) calculated as errorAngle*P(level) - gyroData*P(axis) This means, they are mixing angles with angular velocity. This sounds just s...
by zwiebacksaege
Fri Mar 08, 2013 8:22 am
Forum: Software development
Topic: Is the D-term in the multiwii reversed...?
Replies: 21
Views: 5035

Re: Is the D-term in the multiwii reversed...?

I can not confirm your complains about yaw. My nanoWii sticks to the heading very good. No noticeable difference to my former 6S Heli with 401 gyro.
I use default settings for yaw.
by zwiebacksaege
Thu Mar 07, 2013 1:13 pm
Forum: Software development
Topic: Is the D-term in the multiwii reversed...?
Replies: 21
Views: 5035

Re: Is the D-term in the multiwii reversed...?

The PTerm and DTerm are defined with opposite signs. So it is somehow like minus and minus makes plus again: PTerm = - gyroData*PVal DTerm = + delta(gyroData)*DVal Thanks for this information! That finally solves the mistery of the "inversed" D-Term... win-win-situation the piece missing ...
by zwiebacksaege
Thu Mar 07, 2013 11:34 am
Forum: Software development
Topic: Is the D-term in the multiwii reversed...?
Replies: 21
Views: 5035

Re: Is the D-term in the multiwii reversed...?

okay I think I found my mistake.

The PTerm and DTerm are defined with opposite signs. So it is somehow like minus and minus makes plus again:

PTerm = - gyroData*PVal
DTerm = + delta(gyroData)*DVal
by zwiebacksaege
Thu Mar 07, 2013 11:21 am
Forum: Software development
Topic: Is the D-term in the multiwii reversed...?
Replies: 21
Views: 5035

Re: Is the D-term in the multiwii reversed...?

thanks very much to this big piece of information... i was not aware of those hardware as i only know acc-sensors from my work, we use for vibration measurement. Then my confusion is half gone, as this now fits to the code for me. in ACC mode i'm aware that it uses the angle-sensors instead. But rem...
by zwiebacksaege
Thu Mar 07, 2013 10:49 am
Forum: Software development
Topic: Is the D-term in the multiwii reversed...?
Replies: 21
Views: 5035

Re: Is the D-term in the multiwii reversed...?

as far as I know the technics of gyros, there are always some small mass which will bend or move or deform something when they get accelerated. This causes some change in electrical state (voltage, capacity, resistance or whatever) and you can measure a signal proportional to the acceleration. This ...
by zwiebacksaege
Thu Mar 07, 2013 10:35 am
Forum: Software development
Topic: Is the D-term in the multiwii reversed...?
Replies: 21
Views: 5035

Re: Is the D-term in the multiwii reversed...?

this means, that the integration is done by hardware? because you can only measure accelerations by physical devices...
by zwiebacksaege
Thu Mar 07, 2013 10:27 am
Forum: Software development
Topic: Is the D-term in the multiwii reversed...?
Replies: 21
Views: 5035

Re: Is the D-term in the multiwii reversed...?

Hej there, first of all, greetings to this forum, as I'm new here - but flying the nanoWii for a year now. Now as the spring comes, I reviewed my settings and digged deeper to understand the PID regulation. I got the same problem in understanding as Berndt. For me the D works also in wrong direction...