Laser Security Alarm System Circuit Diagram

Layout or path draw of the pcb fig 2.

Laser security alarm system circuit diagram.

The laser security system works only if the laser is obstructed. Hi i made a laser security system with resistors 1k and 6 8k and fet. If used with a battery the laser security system can work even when there is a power outage. This video just to show how to make laser light security at home by using two transistor three resistance one photo resistance ldr and one led.

Your laser security alarm system is now ready. Laser door alarm is based on the interruption of laser beam. If the intruder passes without obstructing the laser it is considered as a failure. Working of security alarm circuit.

In this laser security alarm circuit we have used lm358 dual comparator ic for comparing voltages coming from ldr. Comparator is configured as non inverting mode and one 10k potentiometer is connected at its non inverting terminal. Normally laser door alarm circuit will have two sections. Easy laser light security system circuit at home.

Focus the laser diode light on the ldr and you will see the l e d and buzzer going off if you interrupt the laser light focusing on the ldr the circuit will trigger and the alarm will ring. Laser security system locks working along with circuit diagram. The circuit can be used as a laser door alarm laser motion detector laser proximity sensor or detector trip wire alarm and for other simple home security purposes. The laser pointer is used as the source of light beam.

If somebody tries to break the laser path then an alarm will be generated in a few seconds. Circuit diagram and explanation. Pull pin security alarm circuit. One of them can put in front of the locker while another one can be placed on the front door.

S1 and s2 are the two switches that are used in the circuit so that both can be put in two different places i e. The circuit construction and setup for the laser security system is very simple. Laser light circuit fig.