Microcontroller › 8051 › AUTOMATIC ROOM LIGHT ON / OFF WITH THE PRESENCE OF HUMAN › Hi Raju, Sensing the rapid
July 25, 2013 at 4:27 am #10195
Sensing the rapid change in temperature of the room is the best way I think. So try to use good quality temperature sensor.
Do some research if it is possible to sense the increase in rate of CO2, and hence sense the presence of large sized living things entered into the room.