Tell us about yourself!
Is there a way to turn this into a door bell type. When you walk in a store and the chime says "Ding - Dong" when you break the laser contact. And the next person walking in the chime will ring again? I notice that you have to install a reset button to have the alarm reset over again once the beam has been broken. I would like to use this as a alarm when a customer walks in and not have to reset it again.Thanks.
Arduino Obstacle Avoiding Robot