security alarm Laser detector or sensor for arduino Beginner
Hi, guys today me and u all are going to make a laser detector work with a Arduino and piezo. So how does it work. when the laser is blocked from the head of the module the piezo willalarm up. so lets start. :):):):):):):):):):):):):):):):):):):):):)!!!!!!!!!!!!! Gather your body parts 1. Laser D...By: hrhofkhan
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[original story: Instructables]