Submitted by milapse on Sat, 01/30/2010 - 18:44
Posted in
All tests on Vimeo in HD: http://vimeo.com/9626538
We're working hard behind the scenes to get some tangible results from the openmoco engine and get you all some looks at hardware solutions. Finally pulled all the pieces together on our first dolly concept and found the results to be very encouraging (to say the least). Here's a sample video on youtube and the source file for close inspection. I'm running the system using the windows pearl slim interface. From what I'm seeing the youtube compression is causing a little studdering but check out the source file to inspect the super smooth operation): Enjoy and look forward to more info as we continue to move forward! Not cool enough for you? Okay, okay how about verticle moves...
Yes It's possible to get
Yes It's possible to get quite accurate repeat movements with the dolly and openmoco system. Using stepper motors is probably the best for repeat stop motion moves.
Repeatability
Hey, those are very pretty results!
I have, togheter with other students and the teatcher of Audiovisual Design, the intent of creating a motion control research and developing center (more on the side of stop-motion filmmaking) at the UEMG university, here in Brazil. We have some decent tools at our workshop and we need at the moment, above all, know-how. Hope you get interested.
So, to begin with: how repeatable are the runs in this dolly? Can i get precise (and how precisely) multiple takes with the same path (i know i'm already considering more than one axle, just planning ahead).
Agree with Milapse, you can
Agree with Milapse, you can get precise, repeatable moves.
For absolute, guaranteed precision, you'll want to _not_ use microstepping (take whole steps) and add an encoder to each of your motor axes to get feedback on each of your moves.
!c
Great work guys
Well I guess I'll playcatch-up here.
-Are you still using the Arduino microcontroller as described in the DIY section?
-Will you cover the stepper drivers and the interface to the Arduino?
edit: nvrmd found the info here:
http://openmoco.org/node/9
Looks like you're getting some great results.
Brilliant
This is absolutely brilliant!
Great work.
Nice!
This looks very sweet. How fast can it move? Aside from the movie and timelapse applications, there is a need for camera systems like this for science research, for monitoring plant growth in growth chambers and at field sites. Any idea how configurable it will be and a vague cost estimate?
Tim
Not really sure how fast
Not really sure how fast it can move, it's tuned for small accurate movements & definitely not speed. Plans are too move toward 'continuious movement' in the future. We need to knock off the timelapse functions first as that is 'phase 1'. Not sure what the 'configurable' question is referring to?? This prototype ran about 700 but we are working on value engineering it down as I type... Stay tuned and feel free to join the conversation. Lot's of ground yet to cover!
Very Cool !
Isn't it fun when the images finally start to move ;-)
I like the elevator best. What are the dimensions of your track and dolly. Whats the weight ?
Matthias
Nice work
It looks very nice. Looking forward to see the design details. I'm in the beging of designing a pan/tilt head. Keep moving forward!!