Build an emulator for the intel 4004 processor in Javascript.
LINK
Build a Robot based on an Arduino, that can run an updated version of software from an old Build Your Own Robot book. It is a self programming robot that should be able to learn and be trained like a simple pet.
LINK
Design and build a Digital Signal Generator.
LINK
Build a Picomite boot to Basic computer Kit I bought from Silicon Chip Magazine.
LINK
Design and build my own 8-bit computer based mostly on TTL logic chips.
LINK
Build the Cybot robot kit from Real Robots magazine.
LINK
Build a fold away Arcade Cabinet that can hang on the wall and plays old games like Asteroids, Space Invagers, Galaxian, Gauntlet, Frogger, etc.
LINK
Build an electric Wool Spinning Machine.
LINK