Loving it!Test video with stationary camera strapped beside the GoPro.
Awesome! Do you have any feedback on the design? Do you like the latch or do you think a rubber band would work just fine? Which motors did you use? Was the gimbal balanced even though you used different motors? Was it easy to assemble? How did the vibration damping work out for you? Which rubber grommets are you using? Thanks!!
Hey, thanks for making your design available!
Overall feedback is that it works great, I like the latch but it doesn't really seem necessary - the GoPro is firmly stuck in the holder (takes a decent amount of effort to pry it out) lol. I have reversed the mounting plate, however, to make a little more room for my FPV camera.
I'm using some pretty cheap motors from(http://www.goodluckbuy.com/hengli-hl-z28-80t-2208-gimbal-motor-for-multicopter-gopro-gimbal-aerial-photography.html)http://www.goodluckbuy.com/hen... - really surprised at how well they perform for that price (something like £10 each - along with a clone alexmos board, the entire gimbal cost something like £30, which is a major bonus).
The balance is pretty good - with power off the roll axis stays in a good neutral position (I assume that's a decent indicator of balance?)
Assembly was a walk in the park, although I had to trim down my screws as I only had M2 & M3 x20mm lying around my parts box. I did have a bit of trouble printing the latch (part 2), it wouldn't print without supports and with supports it was a nightmare to clean up.
The vibration dampening works great - I'm using the grey rubber grommets, I forget what mass they're rated for, but they're quite soft. They do a pretty good job of removing vibration, but the gimbal isn't completely secure while using them - had to pop them back into place a few times after a little flight. I've tried threading cable ties through them to hold the rig in place, but that seemed to translate some vibration - I may pick up some stiffer grommets, to see if they hold the whole thing in place better. Definitely seems to be a great improvement over V2 though!
Thanks Chipper. I always get super excited when someone builds my gimbal, partly because I'm surprised it worked. I guess I'm not all that confident in my own engineering lol.
In my newest version I completely removed the latch because of the reasons you listed and that it added unnecessary complexity and weight (weight = cost on shapeways).
When the gimbal is balanced, you can position the camera in any orientation with the power off and it will stay there. If it tends to rotate back into some position then it means it's unbalanced. In the design I added a few mm of wiggle room to the motor mounts to account for small variations in motors and things.
I've had the same problem with the vibration grommets as you. I think what I might have to do is increase the number to 6 grommets or so to reduce the strain on each.