A home-built camera motion rig has features found in complex and expensive commercial systems, but was built at home for under $400.
If you visit Ryan Grayston's house, you'll find a fairly impressive piece of camera equipment previously only held by high-end video production facilities. Ryan has made a motion-controlled camera rig that allows him to use a 3D animation software to program movements for later playback.
Using Blender 3D, an open-source and free 3d modeling and animation software, Ryan can manipulate his rig, tweak angles, speed, zoom, and focus, then play back this motion on the actual physical rig. This allows for complex shots that would have been quite difficult to reproduce by hand, especially when doing timelapse videos.
The "chaise" or physical base was milled with the help of his local community workshop, Saskatoon Techworks. It also has a healthy dose of lego in the mix, thanks largely to the help of Ryan's son. The chaise houses the electronics, allows for a dolly movement in one direction, and has a pan-and-tilt head installed on it. Stepper motors control the dolly, pan, tilt, and zoom/ focus. These steppers are driving belts, so it would be possible to swap out their pulley and belt for different torque if necessary. Ryan says the rig is quite fast as is though, so he doesn’t anticipate needing to do this in the near future.
On the software side, he has recreated the entire rig in Blender 3D as you can see below. He can then take his time animating the different aspects and fine tuning their movement. He can play back the movement within blender to see in real-time what needs tweaked. Once he’s ready, some python scripts translate that keyframe data from blender out to an Arduino pro mini within the chaise.
Of course playing back animations isn’t going to be optimal for every scenario, so you can also manually control the rig with keyboard commands. Ryan says that he prefers to use a bluetooth keyboard so he doesn’t have to be right there by the machine.
Ryan is still improving on the design, with plans of implementing real-time motion tracking, lighting controls, and a better interface with blender. He’s even selling basic kits and says you can reproduce the entire rig, minus camera, for under $400!
That's an attractive offer Rylangraston. I'm not the one to help you, but I hope you find a team. I like that option a lot better than charging people a penny -- it's worth more than that, not that you need to make billions. But there should be a good return on your efforts. Best of luck!
@rylangrayston Very cool! Would you be interesting in blogging about your progress here? It's a great to document your work, and also get some free technical advice and help from our community! If so, please email me at email@example.com and we'll get you set up.
I would love to prod i sized The hard ware side of this project.. but id want to build a team to pull that off.. so if any one wants to be on such a team contact me!
Another option would to be a forced donation of 0.01 dollors, to use the pro version of the soft ware.
It would still be open but I like the idea of implementing this becuse it would get people past the fact that they dont donate becuse there to lazzy. I think that if people are foced to go thrue the process of donateing a cent they will probably choose to donate the recomended 5 dollors.
This could be a great funding modle for open projects. Just like it has been for some music artists!
I built this rig supper cheap because it just a beta revision to code on.
This is def a labour of love ! ... For my brother Nathan Grayston actualy. He is into film
and we have lots of ideas we cant do without this rig! Many of them reqire complex actions
inbetween time lapse frames, there are some things you just cant with the avalible closed software systems avaible, Altho I commend dragon frame for suporting Arduino!, it still isnt a solution for us.