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Light / Dark Activated Relay

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There's two schematics, one for light activated relay and one for dark activated relay. When the light / dark hits the sensor a relay will be activated. This can be useful if you want to turn on outside lights automatically at night.

 

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Parts List:
Component:

Value:

Datasheet: Qty:
Resistor [R1] Photoresistor Not Available 01
Resistor [R2] 50K Pot Not Available 01
Resistor [R3] 1K Not Available 01
Transistor [Q1] 2N2222 Available 01
Diode [D1] 1N914 Available 01
Relay 5V to 6V Not Available 01

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