Update README.md

README.md

@@ -37,6 +37,7 @@ A curated list of code and resources for computer-controlled drawing machines an
 - [Polargraph](http://www.polargraph.co.uk) - The original polargraph hardware and software project.
 - [Makelangelo](http://www.makelangelo.com) - Open source polargraph artbot.
 - [BrachioGraph](https://brachiograph.readthedocs.io/en/latest/) - A cheap and simple plotter made from sticks, servos, and a Raspberry Pi running Python.
+- [Arduino CNC Drawing Machine](https://www.diymachines.co.uk/arduino-cnc-drawing-machine) - A fairly simple 3d-printed AxiDraw-style plotter with good video documentation.
 
 ### Motor Controllers