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A database scheme for capturing sensor data

I’ve been monitoring a number of sensors in the house for a while now and storing the results in a simple database table. However the current structure isn’t very flexible. I have one table for electricity data, another for inside/outside temperature, humidity and light levels. Adding more sensors would mean adding more columns or new […]

New devices: Jeenodes

I have now built a trio of Jeenodes from Jee Labs based in the Netherlands. These are simply cut down versions of the Arduino with a built in RFM12B wireless module operating in the 868MHz band. They are designed to operate at 3.3V so are able to run on a set of batteries, which is […]