[Martin Raynsford] added a familiar red frame to his computer monitor with classic white knobs ... result in a perfectly usable digital Etch-a-Sketch. We’ve seen a lot of computer controlled ...

How do we know? Simple, Etch-a-Sketch is a registered trademark. Regardless, his project shows how an Arduino can drive a VGA monitor using the VGAx library. Sure, you can only do four colors ...