Make Dark Sensor By Using 1N4007 Diode Without LDR..Automatic Street Light..Automatic Light Switch.. - YouTube
uxcell Photosensitive Diode Sensor Light Detection Photodiode Module with Digital and Analog Output for Smart Car 3pcs: Amazon.com: Industrial & Scientific
Photo Transistor Light Sensor : ID 2831 : $0.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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