Introduction: LASER ALARM DEVICE MODEL
Foreword:
As the ultimate anti-theft alarm device in sci-fi movies, laser alarm device has its invisible infrared ray available for experience and utilization, allowing you to catch the thief easily… Actually, it can be also used in this way.
Step 1:
Your pet at home may be disobedient or go to a prohibited place. Why not making a laser anti-theft alarm emitter if you have no time to guard it?
Step 2:
Today, I will introduce a simple laser alarm device model to you.
Principle: A laser emitter sends a light beam and another laser receiver receives the laser beam. When the connection is established, the alarm will be triggered if any object blocks the laser beam.
Component:
DFRduino UNO R3(similar as Arduino UNO R3)
Gravity:Digital RED LED Light Module
Gravity: Digital Buzzer For Arduino
Laser Transmitter
Toggle Switches
9V battery
Making:
Step 3:
Measure relevant dimensions of laser emitter and receiver with vernier caliper and record such dimensions for using during user modeling.
Step 4:
Support of laser reception terminal
Step 5:
Base of laser reception terminal
Step 6:
Finished installation of reception terminal
Step 7:
Installation of receiver
Step 8:
Support of laser emission terminal
Step 9:
Support base of laser emission terminal
Step 10:
Support and support base
Step 11:
Switch installation
Step 12:
Welding
Step 13:
Insertion of support into the support base
Step 14:
Completion of emitter terminal
Step 15:
Done!
If you think one is not enough, you may make multiple alarm devices!
Step 16:
read original artical:https://www.dfrobot.com/forum/viewtopic.php?f=2&t=2906