I feel a strong need to write wiki pages that talk to the Raspberry Pi's general purpose I/O pins.
Plugin
I'd like to have a plugin with markup that could configure buttons and lights and then sync them with the Pi.
I'd like for these configurations to be usefully shared. This raises the question, who's Pi is it talking to?
I'd like the Pi specific modifications to the Node server to be concentrated in plugins only. We've yet to figure out how this works with streams.
This thinking was first explored with Realtime Txtzyme.
Resources
StackExchange has much Q/A related to GPIO search
There is a Python package for GPIO. website
I found a sample Perl program that blinks out the ip address of a headless node. gist
The linux kernel has provisions for talking to GPIO through the filesystem. doc
There is a comprehensive wiki page describing many details and lots of links. wiki
The Pi discussion board explains how to Blink the OK LED from the command line. post