These data are streaming in realtime from a sensor buried in the soil of a Eucalyptus tree I'm growing on the balcony of my apartment in Berkeley, CA. I'm no green thumb so I can this tool to determine when I need to water the plant.
I use an Arduino yun to stream data from a Sensirion SHT75 sensor. I wasn't able to find a free service (Temboo etc) that would store the data and plot it in real time so I added it here. Thanks to the good folks at Google who host all this all for free on app engine.
© 2017 David Vine.