Скачать или смотреть Laser Home Security System

How to make Laser Home Security System at home


COMPONENTS REQUIRED:

1. LDR
2. Laser light
3. BC 547 Transistor
4. 2.2 K Resistor
5. Buzzer + LED
6. 3.7 V li-ion (If you are using 9V battery then use 4.7 K resistor)

7. Paper home module
8. Mirror pieces



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