|
There's a cool system that has wireless sensors (a la Kill-a-Watt) that you plug in wherever you have appliances or devices. The base station tells you usage at each appliance, and also can turn off the attached appliances remotely. They have a web page, iPhone app, etc. However, to keep from using more energy at each unit than you save, you'd have to design them carefully to use as little energy as possible. Hence my question about Arduino-based sensors.
|