Rob, Thanks for the great work on this (and other things) .... Now I can really try mine out !! (I read your code and you do good work.. real return codes!)..
BTW (Disclaimer) I have both types available in my online shop:
http://arduino-direct.com/sunshop/
I'm looking at sourcing other air environment sensors, and any suggestions would be appreciated...
Adder: Rob, may I use your Playground notes in my Wiki?? I'm trying to help users get many different input and output devices working on Arduino:
http://arduino-info.wikispaces.com/