Need a helping hand

UAVFilm

Aright here is some info.

HiFly Handheld
http://brushlessgimbal.ca/index.php?main_page=product_info&cPath=20_22&products_id=459

Motors
http://www.iflight-rc.com/product/iPower-Brushless-Motor-iPower-GBM-Motor-iPower-GBM5208-150.html

3S Lipos ( same ones i use with my DJI Phantom )

32 Bits Controler from GotHeliRC
http://gothelirc.com/shopdisplayproducts.asp?id=231&cat=Brushless+Gimbal+Controllers

PID
https://www.facebook.com/photo.php?fbid=683598835029619&set=gm.300707106751687&type=1&theater

my Setup
https://www.facebook.com/photo.php?fbid=683597321696437&set=gm.300706293418435&type=1&theater

When i called it a night last night i was doing the mirror test and was fairly happy with Pitch and Roll, well that's until i went for a run with the gimble this afternoon, i m obviously far off... but here is my major concern and where i will need some help/advises. The YAW is practically useless it goes right and left whenever it wants to it does not stick to center and yes I re-balanced it before i started tuning, Here is my PID keep in mind i did have the YAW power at 180+ at some point but i tried several PID and only got Macktruck like vibrations at high power. the YAW is killing me right now.. useless if the camera can't stay centered... I m not even goign to venture into Follow mode till i get the basic sorted. help? pretty please. as of right now its a pretty cool 2Axis dildo...

I've tried 100+ losing lottery digits for YAW no matter what I do it erratic or get a dose of Parkinson syndrome. I don;t know if there are upper limits but I mentally gave up past 40 on P or D so I've not tried higher...

i could use some pointers, but its only my first attempt i have a few more days in me before i give up.

Octovisuals

Limit on P and D is 50.

Make sure your PID/power settings are correct.

Set to 0 all powers except for the yaw, which you should set as high as needed to give the motor enough torque to hold the axis in all movements you will be doing, and with your camera.

Then set P as high as it starts to vibrate. Then raise D by 1 or 2 units. Then raise P and so on until you can't raise D anymore without high or low-frequency vibrations. Make tests moving the axis in different angles and all. If you reach 50 and still don't get oscillations, enable High gyro sensivity, which doubles PID by 2.

I don't recommend any I for yaw axis, so it should be 0, or maybe 0.01, or 0.1, maximum 0.2.

With the correct settings it should do good, but sometimes some retuning is needed depending on the use and the camera.

Make sure you calibrate accelerometer correctly and gyro as well, this one frequently also.

Hope this helps. Best regards.

UAVFilm

Great reply Octo, I ll work on that today, thank you for your help, I ll report back shortly ;)

BodhiVisuals

Hi Octo,

I have the same problem. Roll pitch is working but for YAW Im going completely nuts.

If I go above 3-4 in D a "screaming sound" starts.

Here are my settings:
http://bodhivisuals.dk/Gimbal/gimbal-yaw-problems-32bit-basic.png
http://bodhivisuals.dk/Gimbal/gimbal-yaw-problems-32bit-advanced.png
http://bodhivisuals.dk/Gimbal/gimbal-yaw-problems-32bit-follow.png

The sound:
https://www.dropbox.com/s/31ecnrcs72cz0j5/Video 14-04-14 19.50.10.mov

Hifly Gimbal:
http://ebay.eu/1fFowui
Motors:
2 x BGM8108-90
2 x G5208-200

32bit card from Desire RC

Pleeeeeease help me :)

Howdy, Stranger!

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