Soil Moisture Sensor with Arduino

1// Moisture Sensor Arduino Code
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4//By Circuitdigest 
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10#define ledPin 6
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13#define sensorPin A0
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19void setup() {
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22  Serial.begin(9600);
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25  pinMode(ledPin, OUTPUT);
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28  digitalWrite(ledPin, LOW);
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31}
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37void loop() {
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40  Serial.print("Analog output: ");
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43  Serial.println(readSensor());
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46  delay(500);
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49}
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52 
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55//  This function returns the analog data to calling function
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58int readSensor() {
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61  int sensorValue = analogRead(sensorPin);  // Read the analog value from sensor
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64  int outputValue = map(sensorValue, 0, 1023, 255, 0); // map the 10-bit data to 8-bit data
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67  analogWrite(ledPin, outputValue); // generate PWM signal
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70  return outputValue;             // Return analog moisture value
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73}