Hi everyone, 

Recently, I found the following video: 

https://youtu.be/virDtVVt2Xo

The guy made a drawing plotter with automatic pen change as simple as possible. 

I was thinking it would be great to make something like this for our lab and put it to the Soc.Room for everybody who wants to play with it. 

If anybody interested to make that project, please, let me know :) 
Regards,
Vasilii