//connections to MCU
//DHT22 PIN2>D2
//LDR AO > A0
//PIR DO > D3
#include <DHT.h>

#define DHTPIN 2
#define DHTTYPE DHT22

#define LDRPIN A0

#define PIRPIN 3

DHT dht(DHTPIN,DHTTYPE);


void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
dht.begin();
pinMode(LDRPIN, INPUT);
pinMode(PIRPIN, INPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  float t = dht.readTemperature();
  float h = dht.readHumidity();

int lightlevel = analogRead(LDRPIN);
int motion = digitalRead(PIRPIN);


//condition for temperature
if(t < 20)
{
  Serial.print("warning: low Temperature");
  Serial.print(" | ");
}
else if (t > 35)
{
  Serial.print("warning: High Temperature");
  Serial.print(" | ");
}
else
{
  Serial.print(" Normal Temperature");
  Serial.print(" | ");
}


//condition for Humidity

if(h < 30)
{
 Serial.print("warning: low Humidity");  
Serial.print(" | ");
}
else if (t > 70)
{
   Serial.print("warning: high Humidity");
   Serial.print(" | ");
}
else 
{
  Serial.print("normal Humidity");
  Serial.print(" | ");
}


//condition for Light level

if(lightlevel < 390)
{
 Serial.print("warning: low light");  
Serial.print(" | ");
}
else if (lightlevel > 168)
{
   Serial.print("warning: high light");
   Serial.print(" | ");
}
else 
{
  Serial.print("normal light");
  Serial.print(" | ");
}

//condition for Motion

if(motion == HIGH )
{
   Serial.print("warning: motion detected!");
   Serial.print(" | ");
}

else
{
 Serial.print("No motion detected"); 
}

//Serial.print(motion);

Serial.println("");  
delay(2000);
}