techno_hippieGuy's Robo3D Smooth Rod Upgrade for 495mm Rods (REMIX)
EDIT: Sorry, completely forgot about the camera parts. I've uploaded the .stl files for both mount styles, along with the connector for the gopro style. They come from these designs:
GoPro Style:
http://www.thingiverse.com/thing:192364
Standard:
http://www.thingiverse.com/thing:239268
EDIT: And the bed retaining plate, haha. Sorry, been sick, sleeping a lot, little out of it. Should have all the parts now.
So I really liked this design:
http://www.thingiverse.com/thing:439036
But I needed more out of it. The rods I purchased were 495mm long, and I didn't want to deal with cutting them, so I took this and extended it a bit to fit.
I'm also setting up an Octopi controller with a raspberry pi. So I integrated a camera mount with a slot for the ribbon. There is also a second style of mount in case you end up printing a taller object. I'll be including an extension arm soon which will raise the height of the camera. It hasn't been measured for standard gopro mounts, but I'll get a small adapter arm for one of those as well.
Lastly, I just copied over another belt attachment so that both sides of the bed can be held at the same tension. I've been having issues where the right side of the bed would slide loose a bit and the bed would be able to jiggle. A second belt should prevent this from happening.