I'm using the free version of plot.ly to do plotting from an arduino. Here's a real-time feed, where you can see the effect of last night's irrigation on my soil moisture sensor readings: https://plot.ly/~WhiteRabbit/997 It's very similar to Xively, but I like how I can easily pan and zoom the data. That's helpful as you get a bigger dataset, like this: https://plot.ly/~WhiteRabbit/869/ Plot.ly has demo arduino code on their website you can use as a starting point. Also, I have read how some people are using mysql to collect their data and graph it. I'd like to learn how to do that too, as I think it would be a good data archiving tool, and would provide additional ways to slice and dice the data. With these solutions, you don't need to be dependent on owning or using a Vera. I'd be interested to read about what other solutions people are using.

@korttoma The only difference I see is that you put the entire url with parameters in the first argument of the http.request call and "run=run" as the second (don't know why you have that?). I use the base url as the first argument and the field list as the second r, s = http.request(baseUrl, "field1=XX&field2=XX") Hope that fixes the issue. Also You have to setup the "Channel" and "Plugin" in the website accordingly and name the fields there.

No, youre right, that wouldnt work for battery powered. I chop the ends off old cell phone chargers and try to keep a room's sensors down to a single box. The only one I've considered being battery powered is the "Mailbox opened" one but thats another project. The polling is really just to allow getting realtime data when you want it. If I think about it more, Ill probably leave it out. I was just thinking out loud near the end.