Very similar to this post, I have now set up two sensors to share their data with the world on Thingspeak. The difference is that it will be powered by a wall adapter to have data over a bigger time period. I did this because some civil engineering architecture students are doing an exercise next week for which they could use this data. But it’s also useful for myself because I still need to learn how to receive data from Thingspeak (over a bigger time period) and do something useful with it.
ThingSpeak is an open source “Internet of Things” application and API to store and retrieve data from things using HTTP over the Internet or via a Local Area Network. With ThingSpeak, you can create sensor logging applications, location tracking applications, and a social network of things with status updates. (source)