Detection of the light using photo resistor

Components
Code Compiler
int ldrPin = A1;
int ledPin = 11;
int sensorValue = 0;

void setup() {
pinMode(ldrPin, );
pinMode(ledPin, );
Serial.begin(9600);
}

void loop() {
sensorValue = analogRead(ldrPin);
delay(sensorValue );
int brightness =map(sensorValue, 0, 1023, 0, 255); Serial. println((brightness));
analogWrite(ledPin, brightness);
delay(100);
}

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