I have been doing home automation for my home using Arduino and Android. I have been able to control the device through WiFi successfully.
Here is the scenario.
- Since all the appliance that I control has been pre-wired when my house was built, it can be controlled through physical switches from switch board.
- Also I can wire up the appliances to control through my Arduino WiFi.
My problem is how to get the status of the appliance? If I switch ON the appliance through my Arduino, I will know the status of each appliance that I control. But how to get the status of the appliance that has been controlled through physical switches? Is there any electronic circuits available to get the physical status of the switch? Thanks in advance.