I like the stacking of the analog/digital pin idea, it makes it clearer that the analog pins can do double duty as higher number digital pins.I don't really like the notes field interrupting the grid though. Having a continuous grid you can scan your eyes up and down really makes a chart like this much more readable. I think simply minimizing the notes as much as possible, and putting them in with the description is a better way to go. Some of the comments seem unrelated to pin requirements (Arduino ethernet/xbee)We could lobby for a wider playground page, that would alleviate this whole problem.
What do you think about the positioning of the description/notes field under the pin usage? It's really the only place to put that data, unless you have links to another section - but that gets complicated fast.
Hmm, wonder if I can make my webserver dynamic generate images like the one from Mark Bramwell...
But I'm having trouble with making an easy way to do that within pmWiki (e.g. table cell backgrounds with wikiStyles). I only managed to make the text color background change. Any ideas?