Comment by Jeff E on August 23, 2011 at 10:12pm

when is it gonna be listed on jdrones?

JDrones Comment by Jani Hirvinen on August 23, 2011 at 11:38pm

I expect in 1-2 weeks, We are waiting final parts to arrive from factory so we can be sure that everything fits perfectly. 

Moderator Comment by Roberto Navoni on August 24, 2011 at 2:09am

Great Job Jani ,

I would see the quantity of vibration do you have during the fly . It's very important that you check this problem ...

If you have vibration you can have rolling shutter on your image so your video could be bad :(

Best

Roberto

Comment by Denny Rowland on September 5, 2011 at 3:51am

Looking st the design I would say that for sure you will have a vibration issue. One solution would be to fix the battery on the camera base plate. The more mass at that point the better. The tilt will also be a problem as it is almost 1:1 ratio. Would have been better to have a 3:1 belt or gear drive.

JDrones Comment by Jani Hirvinen on September 5, 2011 at 3:53am

Denny, that is old prototype models on the picture. New is a bit different and having direct drive on camera plates etc.

Comment by Denny Rowland on September 5, 2011 at 4:16am

I know that direct drive is a good simple solution but depending on how good you want your camera movements to look then direct drive does not have very good resolution and it will have to be slowed down to avoid the usual problems. Sorry to be a bit negative. If you take a look at how a security camera is controlled you will see that the gearing is very low ratio, And it works in slew mode. If you need to know more about slew mode then let me know.

JDrones Comment by Jani Hirvinen on September 5, 2011 at 9:22am

i'm always open as you know... we have been working on different type anti-vibration mounts etc and also direct drives. Direct drive gives best results so far

Comment by Denny Rowland on September 5, 2011 at 11:29pm

This is just an idea, If you had a gear driven pitch movement, then you make the servo continuous rotation and then you lock the pot in the mid position. You now have slew mode. This means that as the sick input moves away from neutral the servo starts to move nice and slowly and will speed up as the stick input increases. It will park with a nice slow movement in a new neutral position when you release the stick. the roll function can be normal proportional control as once it is leveled there is no need to touch it again. Servo City have some good gear sets with servo splines already done for you. It is a little more work but can make for a nice difference.

Just a suggestion as I know you are doing a good job.   

Comment by Denny Rowland on September 8, 2011 at 2:18am

Jani

Again just out of interest OpenPilot have been playing with stabilizers and this 35 usd camera mount on test here shows it in action,

http://www.youtube.com/watch?v=D96eGlOU6fQ&feature=related

it has a vibration issue but the concept is quite good I thought. 

JDrones Comment by Jani Hirvinen on September 8, 2011 at 2:40am

Yep I've been working with similar mount used on that video. Downside is that it is only for GoPro and there are a lot of people who want to have pocket cameras and similar on-board. I will continue working and finding best ways to have all possibilities open. In mean while I will finish my GoPro specific mount as soon as possible and work with this bigger mount. We just had some test flights with latest version of it. Biggest problem what we currently have is caused servo jittering.

Looks like that video was recorded in 60fps mode and played back on 30fps mode which always makes it to look better.

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