how to make laser light door alarm | Tech Industry
Hey guys welcome to tech industry we are your tech boys. In this video we are going to make laser light door alarm, this can be used to protect from thief's.
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Materials needed:
1. laser light: https://www.amazon.in/Pullox-Chain-De...
2. transistor bc 547: https://www.amazon.in/DAYDEALZ-BC547-...
3. 2k resistor: https://www.amazon.in/2-2-CARBON-FILM...
4. LDR: https://www.amazon.in/Component7-LDR-...
5. buzzer and battery: https://www.amazon.in/Buzzer-Hi-Wi-Ba...
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our using mobiles:
Vivo y93:Vivo Y93 https://g.co/kgs/By8oeY
Redmi note 4:
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Description writing mobile:https://www.hihonor.com/in/support/ph...
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our another channels:
1. Different invention: / channel
2.TPG gaming: / @tpggaming9918
3.super net: / @supernet4463
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