// defining blynk connection settings
#define BLYNK_TEMPLATE_ID "TMPL3NR7Ow8Qe"
#define BLYNK_TEMPLATE_NAME "Motor"
#define BLYNK_AUTH_TOKEN "szYqC9r_vCGNGt00SiiotDMl7BA2rgK0"
#define BLYNK_PRINT Serial

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

// defining all pins for circuit connections
#define PIN_TRIG 26
#define PIN_ECHO 25
#define LOWLED 18
#define MIDLED 19
#define HIGHLED 21 
#define MOTOR 27
unsigned int level = 0;


// blynk connection details
char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

BlynkTimer timer;

BLYNK_WRITE(V1)
{
  int value = param.asInt();
  Blynk.virtualWrite(V1, value); 
  if(value == 1)
  { 
    Serial.println("MOTOR ON"); 
    digitalWrite(MOTOR, HIGH);
  }
  else if(value == 0)
  { 
    Serial.println("MOTOR Off"); 
    digitalWrite(MOTOR, LOW);
  }
}


void setup() 
{
  Serial.begin(115200);
  pinMode(PIN_TRIG, OUTPUT);
  pinMode(PIN_ECHO, INPUT);
  pinMode(LOWLED, OUTPUT);
  pinMode(MIDLED, OUTPUT);
  pinMode(HIGHLED, OUTPUT);
  pinMode(MOTOR, OUTPUT);

  Blynk.begin(auth, ssid, pass);
}

void loop() 
{

  Blynk.run();
  timer.run();

  digitalWrite(PIN_TRIG, HIGH);
  delayMicroseconds(10);
  digitalWrite(PIN_TRIG, LOW);


  int duration = pulseIn(PIN_ECHO, HIGH);
  Serial.print("Distance in CM:");
  Serial.println(duration / 58);
  Serial.print("Distance in inches : ");
  Serial.println(duration / 148);
  delay(1000);

  level = duration / 50;

  if (level < 100)
  {
    digitalWrite(LOWLED, LOW);
    digitalWrite(MIDLED, HIGH);
    digitalWrite(HIGHLED, HIGH);
    digitalWrite(MOTOR, HIGH);
  }
  else if ((level > 200) && (level < 400))
  {
    digitalWrite(LOWLED, HIGH);
    digitalWrite(MIDLED, LOW);
    digitalWrite(HIGHLED, HIGH);
    digitalWrite(MOTOR, HIGH);
  }
  else if (level >= 400)
  {
    digitalWrite(LOWLED, HIGH);
    digitalWrite(MIDLED, HIGH);
    digitalWrite(HIGHLED, LOW);
    digitalWrite(MOTOR, LOW);
  }
}