How to make a Laser Security Alarm / Sinhala
Required Materials
BC 547 Transistor
LDR
1.5k Ohm resistor
Buzzer
Laser
9V Battery
9V Battery Connector
Card Board
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How to make a Laser Security Alarm / Sinhala
Required Materials
BC 547 Transistor
LDR
1.5k Ohm resistor
Buzzer
Laser
9V Battery
9V Battery Connector
Card Board
Пікірлер: 10