This is an improved version of my first Light Seeking Robot.
I’ve been attempting to control an LCD using my brand new Arduino and a 74HC595N shift register, in which I failed (for now). I also tried the MCP23016 pin expander, which I got working after quite some experimentation. I even wrote a library for it!
To get me started, both on this blog and with my brand new Arduino Uno, I’ve built this Light Seeking Robot and I have documented it here for your entertainment.