Octovisuals

Feel free to visit my webpage: http://www.octovisuals.com/

LeViteZer Gimbal test videos.
Yeah, it's really difficult, one needs a lot of practice to do that... Or we could just create a gimbal with another axis, maybe. :D

Comment by Octovisuals November 2015 permalink
LeViteZer Gimbal test videos.
Good work! Most of the shots are so smooth and stable!

Comment by Octovisuals November 2015 permalink
Roll vibrations...
I'm reviewing the videos, even frame by frame, and I definitely don't see any relevant jitter, judder, stuttering... It must be YouTube, but I don't see anything myself there either. It's not a perfect horizontal movement because…

Comment by Octovisuals November 2015 permalink
Roll vibrations...
What frames per second did you use in that panning, with which shutter speed? Some jitter when doing pan movements is normal when using less than 30 (29.97) FPS, especially depending on the movement speed, the shutter speed, the distance to the subj…

Comment by Octovisuals November 2015 permalink
Roll vibrations...
The camera is OK (I'm a professional ;)), but it's true that particular panning isn't very smooth. I'm guessing it was done when the yaw wasn't that well configured yet, and the movement by RC was this jittery. It's may…

Comment by Octovisuals November 2015 permalink
Follow mode jumpy
I think it's too much Speed, too little Deadband. You want enough Deadband in order to make the movement smooth enough and avoid unwanted yaw movements like there wasn't yaw axis at all. Speed only helps to make the movement faster, but to…

Comment by Octovisuals November 2015 permalink
Roll vibrations...
So, here's some testing video I made using the octocopter, the 3-axis brushless gimbal and the GH4, from a testing flight some months ago: https://youtu.be/UpMGaHpZdVQ This is without lens stabilization and of course without software stabiliz…

Comment by Octovisuals November 2015 permalink
what can I do to make my gimbal more wind resistant?
Small cameras and gimbals are prone to vibrations and rolling shutter (jello effect), so they are a bit more demanding in terms of balance, stiffness, smoth and proper operation and fine-tuned settings than those bigger, heavier setups with GH4 or R…

Comment by Octovisuals November 2015 permalink
Roll loses horizontal angle randomly
Thanks for the reply, Garug. I always try to have them both precisely calibrated. I usually recalibrate the acc. everytime I use the software (once per month at least), and always recalibrate the gyro almost before every use (with the radio, when t…

Comment by Octovisuals October 2015 permalink
Roll loses horizontal angle randomly
I think it's the IMU, when it's affected by temperature... When it's calibrated in a temperature that differs notably from the one when working with the gimbal. Can we assume that when the roll isn't level when the gimbal is sta…

Comment by Octovisuals October 2015 permalink
Follow and RC movement
Now follow yaw RC movement seems to be working perfectly as before (and as nonfollow profile), even when I set some yaw expo curve value, and follow yaw speed. I don't exactly know which change got it to work back properly, setting the correct …

Comment by Octovisuals September 2015 permalink
Follow and RC movement
OK, thanks a lot for the useful info. I think I'll leave yaw offset to 0, then.

Comment by Octovisuals September 2015 permalink
Roll vibrations...
Nice stability! OK, thanks again, I'll keep testing.

Comment by Octovisuals September 2015 permalink
Follow and RC movement
Another strange behaviour I noticed is yaw offset seems to change every time. When I set a value for yaw offset in follow for the yaw and the rest of the gimbal and the camera to point exactly forward, then move the gimbal around and then leave it …

Comment by Octovisuals September 2015 permalink
Roll vibrations...
Yes, I also don't like very much the landing gear being permanently attached to the stabilized part of the gimbal, but the other option, retractable gear as it's available currently, seems even worse just because it tends to be unreliable …

Comment by Octovisuals September 2015 permalink
Roll vibrations...
I can't thank you enough, Garug. I'll test it today and comment how it goes. I never imagined the use of the belt would require different number of poles value. That's what happens when someone sells you something as complex as a br…

Comment by Octovisuals September 2015 permalink
Roll vibrations...
Yes, it's definitely stiffer than a rubber band... Some photos below: http://s2.postimg.org/hje3g1xq1/image.jpg http://s29.postimg.org/5o4azcson/image.jpg I think it definitely isn't 1:1 gear ratio... I'm confused about this. What…

Comment by Octovisuals September 2015 permalink
LeViteZer Gimbal test videos.
Nice!

Comment by Octovisuals July 2015 permalink
Roll vibrations...
Maybe I'll raise P again to 24, since the shaking wasn't so bad, at least noticeably in the video. It's much worse the yaw not holding position very well... Would lowering slighly power and raising P be the same, or could it be better…

Comment by Octovisuals June 2015 permalink
8-bit dies randomly
I checked, and I think the soldering is good, because every wire is firmly attached and is isolated from the others, and there's no sign of burning. Is that way how you evaluate good soldering? The l2C is the white connector at the bottom? I c…

Comment by Octovisuals June 2015 permalink
Follow and RC movement
I tested, and more follow speed didn't seem to help. But I need to test more. Precisely, a question I wanted to ask for some time is if min. angle and max. angle in RC is OK at -45 and 45 to move it 360°, or rather without limitation. It has a…

Comment by Octovisuals June 2015 permalink
Normal physical limitations?
After all this time I found using an adequate design, proper materials, good balance and achieving perfect firmware config/tuning, almost every brushless gimbal can be very stable when used correctly (the operator is very important as well). There …

Comment by Octovisuals June 2015 permalink
Roll motor stiffness
Well, I'm happy since lately I'm achieving already a surprisingly good stabilization for a DIY 8-bit gimbal without lens, body or software stabilization. I think I still can use this gimbal for some more time! :D The roll motor stiffness …

Comment by Octovisuals June 2015 permalink
Roll vibrations...
So, everything is well balanced now, firmware settings are mostly OK, and I'm about to achieve perfect PID/power tuning already (manually...). The gimbal is working much better now at last, and it's surprisingly stable in general even wit…

Comment by Octovisuals June 2015 permalink
Follow and RC movement
As requested, the firmware configuration when the problem appears: http://s14.postimg.org/whh7kj7v5/2015_06_15_Follow_mode.png http://s28.postimg.org/c04xtd9gt/2015_06_15_RC_settings.png I redid the Auto, none of the three motors are inverted. Po…

Comment by Octovisuals June 2015 permalink
8-bit dies randomly

Comment by Octovisuals June 2015 permalink
How to set camera angles after calibration?
I think for 8-bit, the initial angle is a combination of offset values and accelerometer/roll calibration... That's how pitch restarts at 0 degree, and roll, and yaw can achieve the desired angle. Is this correct?

Comment by Octovisuals June 2015 permalink
8-bit dies randomly
Thank you. It seems pretty normal. The wiring seems OK. The board is in a box, I opened it, and cleaned the board with a brush. I'll post some photos I took, anyway, in case you can see something I don't. Tomorrow I'm going to fly …

Comment by Octovisuals June 2015 permalink
Tilt Oscillation in Flight- I can think of anything Left I can try.
Glad you fixed it and explained how. Best regards.

Comment by Octovisuals June 2015 permalink
Tilt Oscillation in Flight- I can think of anything Left I can try.
Wow, that's vibration all right! I agree with Garug. That's mechanical. The gimbal needs to be reworked, no other solution. However, if you want to be really sure, you could perform a really cheap test I'm thinking: really low Power…

Comment by Octovisuals June 2015 permalink

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Username: Octovisuals
Email: octovisualsatgmaildotcom
Joined: January 2014
Visits: 244
Last Active: April 2018
Roles: Member