Scrappy Pen Plotter Draws "Meow!"

Arduino and grbl powered scrappy plotter (pen plotter) draws a drawing from the dailycatdrawings Tumblr!
Here's the original drawing "Meow!": dailycatdrawing...
follow dailycatdrawings on tumblr: www.tumblr.com...
And here's some more details on what I did here. I used Inkscape and the GcodeTools plugin. This plugin enables you to get Gcode out of a drawing like the one I used.
Here's a link to GcodeTools: github.com/cnc...
Once I had the Gcode, all there was left to do was to feed it to the Arduino via the serial port. On the Arduino I am running grbl. The grbl project allows you to get your Arduino to act as a very performant Gcode parser & stepping motor controller all at once.
The grbl project on Github: github.com/grb...
On the Arduino I use a CNC Shield with 2 A4988 stepper motor driver. The up down movement is done with a servo. Which reminds me that I didn't use the original grbl library, but rather a fork of it.
Github "robottini" made this very nice fork which let's you control a Servo motor via Gcode.
robottinis grbl fork: github.com/rob...
And Here's Scrappy Plotter drawing some calibration pattern:
• Scrappy Pen Plotter
And last but not least, my blog post about this project: electrondust.c...