“I wanted to build a game console into the case of a small USB game pad (a NES controler look-alike). To make the work a challenge, I wanted to only use an Arduino Nano clocked at 16 Mhz and some passive components (diodes are OK) and create the best possible video and audio signal that is imaginable with such restrictions.
As it turned out, a monochrome 288p video signal with 4 gray scales is possible when progamming the controller at machine level. 4-channel music is also possible.
My game of choice is Tetris in a version that comes pretty close to the original GameBoy version with a very similar audio track.”