Instant Green Thumb

#include <RCSwitch.h>
#include "DHT.h"

RCSwitch mySwitch = RCSwitch();

//#define
#define MOISTURE A0
#define DHTPIN 2
#define DHTTYPE DHT11
DHT dht(DHTPIN, DHTTYPE, 15);

//initial states
int moisturecurrent = 0;
int distancecurrent = 0;
int duration = 0;

//pins
int TRIGGER = 5;
int ECHO = 4;
int POWER = 7;

/************************SETUP****************************/
void setup() {

  dht.begin();

  // set pin as an input/output
  pinMode(MOISTURE, INPUT_PULLUP);
  pinMode(POWER, OUTPUT);
  pinMode(TRIGGER, OUTPUT);
  pinMode(ECHO, INPUT);

  Serial.begin(115200);

  // Transmitter Arduino Pin
  mySwitch.enableTransmit(12);
  mySwitch.setPulseLength(306);

}

/*******************************LOOP**************************/
void loop() {

  //switch off radio-controlled power socket
  mySwitch.send(4212052, 24);
  delay(1000);
  mySwitch.send(4212052, 24);
  delay(1000);

  /*IF1:Temperature>5°C********************************/

  int humidity_data = (int)dht.readHumidity();
  int temperature_data = (int)dht.readTemperature();

  Serial.print(F("Temperature: "));
  Serial.println(temperature_data);

  Serial.print(F("Humidity: "));
  Serial.println(humidity_data);

  if (temperature_data > 5)
  {
    Serial.println(F("Temperature ok"));

    /*IF2:Distance<25cm***************************/

    //Read sensor data: distance
    digitalWrite(TRIGGER, LOW);
    delay(5);
    digitalWrite(TRIGGER, HIGH);
    delay(10);
    digitalWrite(TRIGGER, LOW);
    duration = pulseIn(ECHO , HIGH);
    distancecurrent = (duration / 2) / 29.1;
    delay(1000);

    int distance_data = (int)distancecurrent;

    //publish
    Serial.print(F("Distance: "));
    Serial.print(distance_data);
    Serial.println(" cm");

    //dry-run safeguard for water pump:
    //distance to bottom of water bucket: 30cm; min. water level: 5cm
    //this will probably need adjusting to your specific setup
    if (distance_data < 25)
    {

      /*IF3:moisture<300****************************/

      //Read sensor data: moisture
      digitalWrite(POWER, HIGH);
      moisturecurrent = analogRead(MOISTURE);
      delay(1000);
      digitalWrite(POWER, LOW);

      int moisture_data = (int)moisturecurrent;

      //publish
      Serial.print(F("Soil moisture: "));
      Serial.println(moisture_data);

      if (moisture_data < 400)
      {
        //switch on radio-controlled power socket
        mySwitch.send(4212049, 24);
        delay(1000);
        mySwitch.send(4212049, 24);
        delay(1000);

        //water for 10 seconds
        Serial.println(F("...Watering..."));
        delay(10 * 1000);

        //switch off power socket
        mySwitch.send(4212052, 24);
        delay(1000);
        mySwitch.send(4212052, 24);
        delay(1000);

        Serial.println(F("Waiting 1 min."));
        for (int i = 1; i <= 1; i = i + 1) {
          delay(20 * 1000);
          Serial.print(F("."));
          delay(20 * 1000);
          Serial.print(F("."));
          delay(20 * 1000);
          Serial.println(F("."));
        }

      } //ENDIF3

      else
      {



        Serial.println(F("Watering not necessary at the moment."));
        Serial.println(F("Waiting 10 min."));
        for (int i = 1; i <= 10; i = i + 1) {
          delay(20 * 1000);
          Serial.print(F("."));
          delay(20 * 1000);
          Serial.print(F("."));
          delay(20 * 1000);
          Serial.println(F("."));
        }
      }

    }  //ENDIF2
    else
    {
      if (distance_data > 30)
      {
        Serial.println(F("Error. Unplausible water level."));
      }
      else
      {
        Serial.println(F("Water bucket empty. Refill necessary!"));
      }
      Serial.println(F("Waiting 5 min."));
        for (int i = 1; i <= 5; i = i + 1) {
          delay(20 * 1000);
          Serial.print(F("."));
          delay(20 * 1000);
          Serial.print(F("."));
          delay(20 * 1000);
          Serial.println(F("."));
        }
    }

  }  //ENDIF1
  else {
    Serial.println(F("Too cold for watering"));
  }

} //End loop