GOCUPI Large Canvas and Paint Gondola
I’ve been experimenting with the GOCUPI drawbot beta board. I’m trying to create large designs on canvas with paint. I had to design and 3D print new motor mounts for canvas corners. I tried paint markers at first, but they’re expensive and unstable so I’ve been printing my own gondola paint pods.
You can download the canvas mount on thingiverse: http://www.thingiverse.com/thing:685404
You can download the paint gondola on thingiverse: http://www.thingiverse.com/thing:685434
Here are the 3D printed canvas mounts with c-clamps. I later added idler posts.
These mounts were too short to allow for full canvas coverage. So I made some extensions:
Of course it wouldn’t be complete with out a 3D printed case for the Raspberry Pi and the GOCUPI Beta board hat.
This is the first painting on canvas I did with GOCUPI:
(it was still drying in this photo ^ light is coming in from the back showing the canvas frame)
Before I started with the canvas, I ran a test print on paper.
I transferred my starting point from the paper to the canvas by poking a hole through the paper with a pen. This is where the gondola needed to start to make an exact copy of my test print.
Now I prepped the canvas with primer and edging effects.
And we’re off!
Everything is going good…
Then the Raspberry Pi crashes (I think it over heated maybe?). GOCUPI stopped and I have an unfinished painting. I decided to try and restart the machine, but only draw the unfinished lines. I took a photo of where it left off, brought it into Photoshop, made a mask to only show the unfinished lines, then ran the result though the TSP generator. I did it this way so I could know exactly how the remaining lines would connect. Since I’m not using the pen up servo, I wasn’t sure how the lines would connect if I just started deleting things in Inkscape.
Finally I sprayed on some oil based stain
Let dry and hang
Before I started this painting I ran a bunch of tests on paper:
I had some warping issues here, I’m pretty sure it was my poor measuring. I started using a laser measure and it helps a lot.
Here are some videos of it in action: