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3d - Printworx

Printing 3d Forum

Quick how to tune guide for BRUGI/martinez brushless gimbals

Started by powerlord, Monday,June 10, 2013, 20:18:23

Previous topic - Next topic

powerlord

Having been through it now more times than I care to remember:

Firstly - use latest firmware - currently 049r69.

connect to GUI either exe or tcl version (I use tcl as on a mac).

Now, zero everything for pitch and roll.

Now, choose roll: take P to 5, I to 5, D to 5, and start to increase max PWM.

If it is going all over the place - your IMU is wrong orientation, so try the ';switch Z'; and ';swtich X/Y'; buttons to get it right.

now as you increase PWM it should be stabilising. keep going until it starts to go mental/vibrate and now back off a bit.

you have have to adjust D to stop it vibrating here.

Now adjust P: increase P until it starts to vibrate, and back off.

Now check PWN again - you may be able to reduce it a bit and still have it stable.

Finally put P as high as you can without it vibrating.

Now increase D a bit to stop the vibration.


You are trying to get P and I as high as you can  get them, D as low as you can get it, and the PWN as low as it will go too.

don';t just do it on the bench - pick up the quad and move it about - jerky movements, slow movvements, etc.

Also, keep a very close eye on jow it adjusts to movement - the difference between the ';reverse'; tick boxes is tiny - if they are wrong way around the angle will be just a tiny bit off while it stablises - if so, try the opposite.

Now repeat for the pitch axis.

job done.

Gaza07


bongo

thanks very much for this guide, is the latest version as of July 8th ';BETA Version 049 r161 incl. GUI'; and from this source?

https://code.google.com/p/brushless-gimbal/downloads/list

powerlord

Yup that';s the only source.  I';ve not updated to the latest since r69 so not sure if guide has changed again massively

Sent from my HTC One using Tapatalk 4 Beta


bongo

thanks for all the good help, ive had a right to do with mine to get it this far, ive currently got 161 installed and running now, however the words baffling are coming to mind, so many terms and scales to get to grip with, would you be able to post up a few screenshots of your settings just so i can gauge wether maxPWM should actually be in terms of fugures, im adjusting mine but it doesnt seem to give consistent results and a few screenshots would help as a reference? just a though and again thanks

powerlord

Has someone got 4s settings for the rctimer on 049r161 they can post (the txt file) - I am struggling to setup this version

rickp

Thanks for the tips powerlord - just been out for the first flight with mine (on 4S) and its incredibly stable. I';ll grab the config from it for you later.
:beer2:

Marty McFly

hi Rick, would be grateful of the settings as well please,Marty. :scotland:

rickp

Attached are settings I';m using. Video to follow, but its working very well for me with about 2 minutes tuning in the lounge - but then I don';t loon around with the hexacopter, so ymmv ;)

So these are for the rc-timer brushless gimbal and controller board, on a jdrones hexacopter running 880kv motors spinning 12x4.5 rctimer carbon fibre props, on 4s battery.

coastersteve

I';ve not seen anyone mention the graph yet in the GUI.

I';ve been playing around with the settings and seeing the response in the graph. What you are looking for is a quick returns to centre without overshoot. I';ve had to use the zoom in slider and zoom right in to see what';s happening. What I';ve been doing is tilting a leg of the quad up then dropping it down, you';ll then be able to see what the response is and whether there';s any vibration/hunting going on.

Its OK using other';s settings and getting it near (Still good) but you can tweak a bit more and get it better.

powerlord

thanks guys - i was just tying myself in knots - i went back to defaults, tweeked a bit and all is well.

I';ll post my settings too.

For the first time I can get full 90 degrees down on the rc channel too.

I';ve done my goodluckbuy gimbal too - different settings required but now also working well. yeh!

stu

g1dtf

Can you post the settings for your Goodluckbuy gimbal and any other tips you may have to help with setup. I have a similar fibreglass gimbal (Unmanned Tech Shop) that uses the same motors so hopefully the setting may be similar. I have installed r161 firmware and having a torrid time getting anything resembling stability with mostly just a jittery mess. This is a new build so not familiar with the setup and looks like I have a lot to learn regards the gimbal setup.

Thanks

Andy.

g1dtf

I have managed to get it to the point where its just about working but cannot get the thr camera to pitch more than +/- 50 before it shrows a wobbly and bounces/vibrates up and down on the pitch axis. I want to try to get it to go -90 (straight down) before I do any fine tuning. Not really sure what to tune to get it past the +/- point so kinda stuck atm. I have read of others having similar probs but not seen any solutions.

Andy.

sevet

this is just the board configuration here, one of the most important things for the gimbal is complete balance on the roll - every angle you leavet it at and it will stay there, like prop balance, for the pitch you might be enough with it falling to center balance, but if you want to controll tilt from RC you have to balance the tilt the same - which ever angle you leave it and it will stay, and it should be nalnce both roll and tilt simultaniously - no matter what roll or pitch angle , it shoulf stay lile that, all that before ypu powet the board and start configuring, without balance it wont work

Sent from my HTC One X using Tapatalk 4 Beta


Francois

Hi

I have a RCtimer gimbal and it works fine with the current firmware. I don';t want to do any uppgrades, just tune from the GUI. Where do you get the GUI to communicate with the board? I have Arduino installed on my Mac, but all threads I find are about uppgrading the firmware, not installing the GUI.
Any ideas?

thanks

Francois

powerlord

Quote from: Francois on Saturday,August 31, 2013, 18:32:15
Hi

I have a RCtimer gimbal and it works fine with the current firmware. I don';t want to do any uppgrades, just tune from the GUI. Where do you get the GUI to communicate with the board? I have Arduino installed on my Mac, but all threads I find are about uppgrading the firmware, not installing the GUI.
Any ideas?

thanks

Francois


it comes with the download from brushlessgimbal.de

it';s a tickle file (tcl).

so you need to install up to date tcl on mac, then from command line:

wish whateverguiiscalled.tcl

and up it will come.

stu

coombs

Hello,

I just put together the RCTimer brushless gimbal with the RCTimer control board and I';m having a ton of trouble tuning it. I tried following the directions on this site, but can';t get it to work at all. I';ve tried reversing the axis and all that junk, but still no luck. Here are pictures of the setup and video of the thing going nuts when I turn it on. It like to turn around in circles in the pitch direction (towards the back).

Any ideas?

Thanks in advance.




Gaza07

It looks to me like you have the sensor board the wrong way around the markings on the board are wrong  ~~

I havent tried the latest firmware yet but I will as soon as i get chance  :beer2:




coombs

I';m still having trouble getting a stable tune on this thing. I fixed the orientation of the IMU and the best result I get is by using the defaults, but it';s not perfect. I';ve tried following the tuning steps at the start of this thread and no luck.

I wish you could just hit a button and auto-tune the damn thing. That would be amazing!! If anyone has any words of wisdom that would be awesome.

powerlord

Read the Alexmos manual and look on youtube for tuning guides.  It doesn';t matter so much that it is different software - it';s about learning how a PID system works.  Once you get your head around that,  you can tune anything that uses a PID control system.

Sent from my HTC One using Tapatalk


coombs

Quote from: powerlord on Thursday,December 05, 2013, 07:57:01
Read the Alexmos manual and look on youtube for tuning guides.  It doesn';t matter so much that it is different software - it';s about learning how a PID system works.  Once you get your head around that,  you can tune anything that uses a PID control system.

Sent from my HTC One using Tapatalk


I';ve tried and tried. I followed this guide and I tried to find good walkthroughs on YouTube on tuning gimbals, but I can';t find anything helpful. I';m ready to throw the towel in on this thing.

bulesz

Guys,

Many thanks for the guide! Is it possible to tune it to have ZERO horizontal drift? And why is the pitch so weak and slow compared to the roll axis??? The pitch is just "follow" the movement, not holding on the "horizon"... ?

Cheerz,
B