Keyestudio Ks0428, Manual

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Serial.begin(9600);
}
void loop() {
sensorValue = analogRead(sensorPin); // read the value from the
sensor:
Serial.println(sensorValue); //Serial port prints the resistance value
delay(500);
}
//******************************************************
(5) Test Result
Upload code on development board, open serial monitor, check if
its value diminishes when covering photoresistor. However, the
value increases when uncovered.
(6) Code Explanation