938521.fig.0012a
(a)
938521.fig.0012b
(b)
Figure 12: Hardware for the sensor nodes. (a) Triosensor node on a tripod. On top is the microphone, buzzer, solar panel, and user and reset buttons. On the sides are the windows for the passive infrared sensors. (b) A live picture from the two-target PEG experiment. The targets are circled.