Step 1: Components Required
*Pot(To increase or decrease the sensitivity of ldr)
*wires to connect to breadboard (if needed I pulled out some single strand wires from scratch)
A photo resistor or light-dependent resistor(LDR) or photocell is a light-controlled variable resistor. The resistance of a photo resistor decreases with increasing incident light intensity; in other words, it exhibits photo conductivity. A photo resistor can be applied in light-sensitive detector circuits, and light- and dark-activated switching circuits.
Step 2: Connecting Components
so we connect pot in series with LDR and sensor value is taken across LDR in terms of voltage developed.... due to light intensity....
Step 3: Coding
Step 4: Upload
secondly light is falling on ldr (two or three digit number)
Step 5: Adding Led