u/Oli_Vier_0x3b29

▲ 585 r/arduino+1 crossposts

Today was the first full scale test of my mural plotter Dot-Bot using 3 motor stations and real spray cans. In my last timelapse, the canvas was small and the loads were negligible but here, the third motor station really makes a huge difference taking the bulk of the forces in the upper center

For years now, I am working iteratively on my wall plotter project called Dot-Bot. During the first full scale tests, we ran into issues with the forces being too high on the side motors when the gondola moves in the upper middle portion of the canvas. This led to wavy lines since the GT2 belts started to oscillate like guitar stings under high loads. With this third center station, we are able to decrease the force on the side motors dramatically improving quality noticeably where it matters the most, in the center of the wall.

u/Oli_Vier_0x3b29 — 3 days ago

▲ 543 r/arduino+1 crossposts

Due to physics, gondola weight quickly becomes a limiting factor for polargraphs. Since I want to use regular 400ml spraycans (and therefore have to carry a certain weight), I opted to add a third center motor to lift the bulk of the weight and it works surprisingly well. Image gen. with spiralux

I am working on a 100% custom wall plotter project that can carry regular 400ml cans of spraypaint, and this is the next step in the journey to get it perfected and in the hands of an artist to have fun with it :-) The image comes from an open source tool developed by a friend of mine and can be tested out here https://select.github.io/spiralux/ code can be found here https://github.com/select/spiralux

u/Oli_Vier_0x3b29 — 15 days ago