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abc.ino
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abc.ino
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#include <DHT.h>;
//Constants
#define DHTPIN 7 // what pin we're connected to
#define DHTTYPE DHT11// DHT 22 (AM2302)
DHT dht(DHTPIN, DHTTYPE);
#include <DHT.h>;
#define DHTPIN 7 // what pin we're connected to
#define DHTTYPE DHT11 // DHT 22 (AM2302)
#define soilWet 500 // Define max value we consider soil 'wet'
#define soilDry 750 // Define min value we consider soil 'dry'
// Sensor pins
#define sensorPower 7
#define sensorPin A0
const int analogInPin = A1; // Analog input pin that the potentiometer is attached to
const int analogOutPin = 9; // Analog output pin that the LED is attached to
int sensorValue = 0; // value read from the pot
int outputValue = 0;
// value output to the PWM (analog out)
//Variables
int chk;
float hum; //Stores humidity value
float temp; //Stores temperature value
void setup() {
pinMode(sensorPower, OUTPUT);
//pinMode(sensorPin,OUTPUT);
pinMode(analogInPin,INPUT);
pinMode(analogOutPin,OUTPUT);
pinMode(sensorValue,INPUT);
pinMode(outputValue,OUTPUT);
// Initially keep the sensor OFF
digitalWrite(sensorPower, LOW);
// initialize serial communications at 9600 bps:
Serial.begin(9600);
dht.begin();
}
void loop() {
delay(2000);
//Read data and store it to variables hum and temp
hum = dht.readHumidity();
temp= dht.readTemperature();
//Print temp and humidity values to serial monitor
Serial.print("Humidity: ");
Serial.print(hum);
Serial.print(" %, Temp: ");
Serial.print(temp);
Serial.println(" Celsius");
delay(10000); //Delay 2 sec.
int waterMoisture = readSensorWater();
Serial.print("Water Output: ");
Serial.println(waterMoisture);
int moisture = readSensorSoil();
Serial.print("Soil Output: ");
Serial.println(moisture);
// Determine status of our soil
if (moisture < soilWet) {
Serial.println("Status: Soil is too wet");
} else if (moisture >= soilWet && moisture < soilDry) {
Serial.println("Status: Soil moisture is perfect");
} else {
Serial.println("Status: Soil is too dry - time to water!");
}
delay(1000); // Take a reading every second for testing
Serial.println();
}
int readSensorWater() {
// read the analog in value:
sensorValue = analogRead(analogInPin);
// map it to the range of the analog out:
outputValue = map(sensorValue, 0, 1023, 0, 255);
// change the analog out value:
analogWrite(analogOutPin, outputValue);
delay(2);
return outputValue;
}
int readSensorSoil() {
digitalWrite(sensorPower, HIGH); // Turn the sensor ON
delay(10); // Allow power to settle
int val = analogRead(sensorPin); // Read the analog value form sensor
digitalWrite(sensorPower, LOW); // Turn the sensor OFF
return val; // Return analog moisture value
}