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How to make a Laser Security Alarm for Science Project || DIY make a simple Laser Security Alarm

Опубликовано: 01 Июнь 2026
на канале: Kirru Ideas
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How to make a Laser Security Alarm for School Science Project

Requirements

LDR
BC547 transistor
2.2k resistor
LED bulb
1k resistor
Buzzer
Switch
Glass Pieces
Laser Light
Cardboard

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