The sys admin's daily grind: SparkFun
Trouble in the Air
Is your neighbor burning the wrong kind of wood or did a couple of VWs just pass by your house? Charly finds out with a sensor. For an attractive approach to visualizing boring measurement figures, you can either use your own web server or rely on a specialized service like SparkFun.
I ordered a particulate matter sensor from smog-experienced China (Figure 1), connected it to a Raspberry Pi, and can now see with up-to-the-minute accuracy when a neighbor has a fire in their wood-burning stove and even tell if the wood was properly dried. I use RRDtool to create illustrative graphs from the particulate matter readings that I get once every minute and upload them to my web server [1].
Figure 1: The particulate matter sensor from the Far East that Charly connected to his Raspberry Pi.
I could even do without the web server, because number of services handle storage and visualization of measurement data for you, if so desired. One of them, SparkFun, lets you store your data simply with an HTTP call.
[...]
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