Frankly speaking i didnt get the idea behind your requirement. Whenever an appliance is powered, you may connect an Indicator bulb across the power line to detect its status. (Wether Powered or Not) Why do you need a micro controller there?...cheers
tx to all.. the thing is i want to control the electrical devices remotely as well i need the feedback of their status. so in my GUI i need to show their status...
if i use sensors, then i have to built different ccts for each appliances...how to use current sensor?? is this is the best solution( cost)?
instead of using different kind of sensors simply use the current sensors with each device, if the current is flowing it means the device is working thatz it