The Zarplotter is a four motor drawing robot originally created (to our knowledge) By Randy Szarzynski et al in California. They sell a fully finished machine which you can purchase at https://www.zarplotter.com/.
I designed a similar machine to test my changes to the Makelangelo software and Makelangelo firmware](marginallyclever.com/product/makelangelo-firmware/). It's a natural step on the path to making a skycam/spidercam, which has a very similar shape.
You can get all the details - including the full list of parts to build your own - and meet other enthusiasts through the official Marginally Clever Zarplotter page.
The digital download of the Bill of Materials - the list of parts for our Zarplotter design - costs a small amount. Less than shipping costs from our lab to you! By purchasing this bill of materials you support us in our research & development of creating open source robots.
Since you seem like the kind of can-do person that would want to use recycled parts or find a better deal on hardware, we say cool! Here's the list of what you need, go get the bits yourself. We ask that you purchase the Bill of Materials once for each robot you build, whether for yourself or for others. Thank you for your honesty & support. <3
Print this many parts:
- 1x plotter bottom
- 1x pen holder
- 1x servo frame
- 1x pen adapter
- 8x twist clamp
- 8x motor idler
- 4x tensioner
- 4x motor ceiling
- 4x motor floor
Default settings, worked great.
Start at the beginning
I used Fusion360 to model a Sharpie, then the plotter that lifts and moves the sharpie.
Knowing the plotter set constraints on the design of the motor mounts, which I modelled once and repeated four times.
Finally I assembled everything virtually to check for interference and unexpected problems.
Lastly I built and tested a working model.