Wednesday, May 8, 2019

Laser anti theft circuit

Laser anti theft circuit (PCBWay.com)
This circuit is a simple laser anti theft alarm with SCR, laser, LDR and a few other components.
When the theft body cut the laser beam, the buzzer turns ON and latch (stay ON) until the Reset button pressed.
I designed the PCB in the shape of tiny house (my YouTube channel logo)

Parts list:
BT169
LDR (3pcs)
Laser 5V 5mW (3pcs)
Buzzer
10K Potentiometer
Push button 

Laser anti theft circuit


Circuit:

Laser anti theft circuit

Gerber file:


Video: