Design paradigms are the norm in each business and automatic machine instruments aren’t any totally different. Most 3D printers, for instance, operate in the same approach: every axis rides on rails, with belts pulled by fastened motors. Pen plotters are inclined to make the most of comparable kinematics. However generally we see builds that ignore established paradigms, like this DIY fixed-belt CNC pen plotter.

Not like most pen plotters, this machine strikes alongside fastened belts. This format treats the belts virtually like inflexible our bodies, just like a rack-and-pinion gear set. As a result of the belts stay fastened in place, the motors should transfer. The result’s a novel kind issue. On this case, creator tuenhidiy made heavy use of PVC pipe for the machine’s construction and enclosures. The supplies are very cheap, however this machine’s axes trip on hardened metal rods and so it’s nonetheless able to drawing very properly.

To maintain prices down with out sacrificing functionality, tuenhidiy selected to make use of an Arduino UNO Rev3 board for management. That reads GRBL G-code information via a microSD card module and controls the stepper motors via a CNC defend with A4988 stepper drivers. There may be additionally a easy Arduino Nano-based controller interface made with a 16×2 character LCD, button, and rotary encoder.

This can work with quite a lot of totally different open-source software program instruments, together with widespread plugins for Inkscape.