[pedro1976]

Some time ago I was brain storming about something similar but with a different tech stack to be able to plot from the distance. I wanted to mount a spray can on a quad-copter and keep the power supply external initially. The ultimate goal was to mark an area of wall using a separate device (mobile phone maybe) and the quad-copter would then fly there and do its work.

[sleepybrett]

Check out GRL's old `l.a.s.e.r. tag` project. Projector based but used machine vision to draw on top of a laser pointer mark.

https://github.com/LeonFedotov/L.A.S.E.R.-TAG-GRL