I've completed a first version of a tinyos 2 app that logs temperature readings to the flash for future retrieval. Because I'm logging to the flash instead of the UART I can therefore stick in 2 batteries into my mote and take it with me. Then when I get back home, I simply plug in the USB and press the user button to write all the stuff on the flash to the UART so that I can view the data.
I'm only taking temperature readings for now but what might be interesting would be to take humidity and light readings also and then see if there exists a correlation between those 3 values.
I'll try to implement that when I have the time.
For now here's my first version of the app temperature.tar.gz
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