Fans installed in lift lobbies are generally switched on at all times and after passengers board the lift the switched on fan is a source of wasting electricity. In these places, there is no way to detect if there are people waiting for the lift or not. A solution to this problem is a smart switch which can be attached to any electrical appliance; in this case a fan, and would be switched on only in presence of a person. Smart fan switch was a project that was done as a part of course embedded systems at IIT Delhi under the guidance of Prof M Balakrishnan. The final prototype of this project was on display at th e 13 th Open House IIT Delhi. The components we used in our project were: Raspberry pi 3.0 Webcamera Circuit board Transformer (220V to 5V) Transistor SD card Relays Resistors Fan Raspberry pi The first and foremost task is to get familiarized with this micro-controller and know about all its components. It is a very popular micro-controller, costs around
The journey of our project: A switch based on face detection and image processing algorithm to operate only when a camera detects face of a person