https://www.projectsof8051.com/automatic-room-light-controller-with-visitor-counter/
Click on the link above for more information on this project.
Main concept behind this project is to measure and display the number of persons entering in any room like seminar hall, conference room. LCD display placed outside the room displays this value. And when number of persons inside the room are zero, power supply inside the room can be cut using a relay interface.
Post time: Jul-31-2017