Power-saving Snoozing

Because motes are wireless they can't be plugged in, so they need batteries. However, the batteries don't last very long if the motes are constantly switched on. To solve this problem, our motes have been programmed to be asleep for most of the time. They wake up about every 30 seconds. The sensors take their readings, and then transmit the data back to base. All this only takes a second - saving lots of battery power. Now the batteries can last a month instead of a few days.

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