 // Blynk IOT Smart Plant Monitoring System

/* Connections
Relay. D3
Btn.   D6
Soil.  A0
PIR.   D5
SDA.   D2
SCL.   D1
Temp.  D4
RELAY2.D0
*/

//Include the library files
#include <Wire.h>
#define BLYNK_PRINT Serial  


#include <BlynkSimpleEsp8266.h>
#include <DHT.h>
#include <Blynk.h>

    



char auth[] = "  c1GLEuiFjB9MBti4_oQEHvdyrL0g50BJ ";  //Enter your Blynk Auth token
char ssid[] = " kumkum    ";                          //Enter your WIFI SSID
char pass[] = "    kumkum00 ";                        //Enter your WIFI Password

DHT dht(D4, DHT11);  //(DHT sensor pin,sensor type)  D4 DHT11 Temperature Sensor
BlynkTimer timer;

//Define component pins
#define soil A0  //A0 Soil Moisture Sensor
#define PIR D5   //D5 PIR Motion Sensor
int PIR_ToggleValue;

void checkPhysicalButton();
int relay1State = LOW;
int pushButton1State = HIGH;
 
#define relay 0 //D3
#define RELAY_PIN_1 D3    //D3 Relay
#define RELAY_PIN_2 D0     //D0 Relay
#define PUSH_BUTTON_1 D7  //D7 Button
#define VPIN_BUTTON_1 V12

//visitor counter
#define inSensor D7
#define outSensor D8

int inStatus;
int outStatus;
 
int countin = 0;
int countout = 0;
 
int in;
int out;
int now;

WidgetLED light(V0);


//Create three variables for pressure
double T, P;
char status;

void setup() {
  Serial.begin(9600);
  
  
  pinMode(PIR, INPUT);

  pinMode(RELAY_PIN_1, OUTPUT);
  digitalWrite(RELAY_PIN_1, LOW);
  pinMode(PUSH_BUTTON_1, INPUT_PULLUP);
  digitalWrite(RELAY_PIN_1, relay1State);


  Blynk.begin(auth, ssid, pass, "blynk.cloud", 80);
  dht.begin();

  //visitor counter
 pinMode(inSensor, INPUT);
  pinMode(outSensor, INPUT);
  pinMode(relay, OUTPUT);
  digitalWrite(relay, HIGH);



  for (int a = 5; a <= 10; a++) {
    
    
    delay(500);
  }
  
  //Call the function
  timer.setInterval(100L, soilMoistureSensor);
  timer.setInterval(100L, DHT11sensor);
  timer.setInterval(500L, checkPhysicalButton);
}


//Get the DHT11 sensor values
void DHT11sensor() {
  float h = dht.readHumidity();
  float t = dht.readTemperature();

  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }
  Blynk.virtualWrite(V0, t);
  Blynk.virtualWrite(V1, h);

  
  
}


//Get the soil moisture values
void soilMoistureSensor() {
  int value = analogRead(soil);
  value = map(value, 0, 1024, 0, 100);
  value = (value - 100) * -1;

  Blynk.virtualWrite(V3, value);
  
}

//Get the PIR sensor values
void PIRsensor() {
  bool value = digitalRead(PIR);
  if (value) {
    Blynk.logEvent("pirmotion", "WARNNG! Motion Detected!");  //Enter your Event Name
    WidgetLED LED(V5);
    LED.on();
  } else {
    WidgetLED LED(V5);
    LED.off();
  }
}

BLYNK_WRITE(V6) {
  PIR_ToggleValue = param.asInt();
}


BLYNK_CONNECTED() {
  // Request the latest state from the server
  Blynk.syncVirtual(VPIN_BUTTON_1);
}

BLYNK_WRITE(VPIN_BUTTON_1) {
  relay1State = param.asInt();
  digitalWrite(RELAY_PIN_1, relay1State);
}

void checkPhysicalButton() {
  if (digitalRead(PUSH_BUTTON_1) == LOW) {
    // pushButton1State is used to avoid sequential toggles
    if (pushButton1State != LOW) {

      // Toggle Relay state
      relay1State = !relay1State;
      digitalWrite(RELAY_PIN_1, relay1State);

      // Update Button Widget
      Blynk.virtualWrite(VPIN_BUTTON_1, relay1State);
    }
    pushButton1State = LOW;
  } else {
    pushButton1State = HIGH;
  }
}


void loop() 
 
{
  Blynk.run(); // Initiates Blynk
  inStatus =  digitalRead(inSensor);
  outStatus = digitalRead(outSensor);
  if (inStatus == 0)
  {
    in = countin++;
  }
 
  if (outStatus == 0)
  {
    out = countout++;
  }
 
  now = in - out;
 
  if (now <= 0)
  {
digitalWrite(relay, HIGH);
    light.off();
delay(500);
 }
  else
  {
    digitalWrite(relay, LOW);
    light.on();
  delay(500);



    
  }
 
  Blynk.virtualWrite(V1, in); // Visitors In
  Blynk.virtualWrite(V2, out); // Visitors Out
  Blynk.virtualWrite(V3, now); // Current Visitors
 


  Blynk.run();  //Run the Blynk library
  timer.run();  //Run the Blynk ti
}

created 2 years ago

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