How to Build a “Simple Laser Security System” at Home

This tutorial, let’s understand how to make a “Simple Laser Security System” or a “Laser Sensor” in just a few steps. Step 1: Assembling the Electronic Components The components you will need for making this circuit are as follows: LDR (Light Dependent Diode) L.E.D (Light Emitting Diode) BC547 Transistor 100 ohm or 330 Ohm resistor… Continue reading How to Build a “Simple Laser Security System” at Home

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