This Instructable might just complete your plan to take over the world with the Raspberry Pi. Control R-Pi’s GPIO pins via a web page. Install some soft, type in a few commands, and you’re set. The base package includes:
– A server program that runs on the Raspberry Pi to read variables
– A MySQL database to store the variables in
– An Apache2 served webpage to allow control of the variables
MySQL to store gpio data sounds a bit like overkill ;-)
I have build a similar trick on a ngw100 Linux board a few years ago using Lua and used a Lua source file to read and write config.
Same trick can be used using php’s eval()