From Digi International: Tweeting Pet Bowl
Attention pet owners! Do you ever walk past your pet’s bowl and wonder how long it has been empty?
Using a force-sensitive resistor and two Digi XBee cellular modules, the pet bowl senses when the water level or amount of food in the bowl is low. It will then send a tweet to alert the owner that the bowl needs to be refilled – a complete wireless solution.
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