LDR to switch a led Day/Off Night/On
Post date: Dec 18, 2015 1:55:42 AM
Here is a schematic to switch on/off a led according to light condition.
Daytime, the led is off, Night time, the led is on.
I choose 12 V as Vcc because i want to use stock strip LED. The the resistor R3 and the Led are already inside the strip Led.
Components:
Components:
Resistor 1.5 M Ω x1
Resistor 1K Ω x1
LDR LDR VT90N2 x1
Transistor BC547 x1
1 Led from 12V strip Led x1