#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>


#define BLYNK_PRINT Serial


#define BLYNK_TEMPLATE_ID "TMPL6IsHG74PP"
#define BLYNK_TEMPLATE_NAME "water level"
#define BLYNK_AUTH_TOKEN "T8FYDddwgi5DkPOAymqmMRcOfcYn9RV3"


#define PIN_TRIG 4
#define PIN_ECHO 2
#define LowLevel 26
#define MidLevel 27
#define HighLevel 14
#define Motor 5




char ssid[] = "Wokwi-GUEST";
char pass[] = "";
BlynkTimer timer;


unsigned int level = 0;


void setup() {
  pinMode (LowLevel,OUTPUT);
  pinMode (MidLevel,OUTPUT);
  pinMode (HighLevel,OUTPUT);
  pinMode (Motor,OUTPUT);


  digitalWrite(LowLevel, LOW);
  digitalWrite(MidLevel, LOW);
  digitalWrite(HighLevel,  LOW);
  digitalWrite(Motor, LOW);
 
  Serial.begin(115200);
  pinMode(PIN_TRIG, OUTPUT);
  pinMode(PIN_ECHO, INPUT);


  Serial.begin(9600);
  Blynk.begin(BLYNK_AUTH_TOKEN,ssid,pass);
  timer.setInterval(100L, myTimerEvent);
  }


void myTimerEvent()
{
  Blynk.virtualWrite(V4, level);
}


void loop() {
    // Start a new measurement:
 
  digitalWrite(PIN_TRIG, HIGH);
  delayMicroseconds(10);
  digitalWrite(PIN_TRIG, LOW);


  // Read the result:
  int duration = pulseIn(PIN_ECHO, HIGH);
  Serial.print("Distance in CM: ");
  Serial.println(duration / 58);
  Serial.print("Distance in inches: ");
  Serial.println(duration / 148);


  level = duration / 58;
  Blynk.virtualWrite(V4,level);


  if (level<100)
  {
    digitalWrite(LowLevel, LOW);
    digitalWrite(MidLevel, HIGH);
    digitalWrite(HighLevel, HIGH);
    digitalWrite(Motor, HIGH);


    Blynk.virtualWrite(V0,HIGH);
    Blynk.virtualWrite(V1,LOW);
    Blynk.virtualWrite(V2,LOW);
    Blynk.virtualWrite(V3,HIGH);


  }
  else if((level>200)&(level<400))
  {
    digitalWrite(LowLevel, HIGH);
    digitalWrite(MidLevel, LOW);
    digitalWrite(HighLevel, HIGH);
    digitalWrite(Motor, HIGH);


    Blynk.virtualWrite(V0,LOW);
    Blynk.virtualWrite(V1,HIGH);
    Blynk.virtualWrite(V2,LOW);
  }
  else if (level>=400)
  {
   
    digitalWrite(HighLevel, LOW);
    digitalWrite(MidLevel, HIGH);
    digitalWrite(LowLevel, HIGH);
    digitalWrite(Motor, HIGH);


    Blynk.virtualWrite(V0,LOW);
    Blynk.virtualWrite(V1,LOW);
    Blynk.virtualWrite(V2,HIGH);
    Blynk.virtualWrite(V3,LOW);
  }


  delay(1000);
  Blynk.run();
  timer.run();
}