You can Enhance this project and set the sensitivity of the LDR with a lazer light and keep it on the way of any door circuit at one side and lazer at other side of the door and a then you can make this project to buzz as soon as some one enters in a room
I personally set this project in my room with sensitivity of tube light and whenever i came in and turn my room’s tube light on
sourced by: rookieelectronics
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