Humidity Sensor

//www.elegoo.com
//2016.12.9
// Atiriya Iyer

#include <SimpleDHT.h>

// for DHT11,
//      VCC: 5V or 3V
//      GND: GND
//      DATA: 2
int pinDHT11 = 7;
SimpleDHT11 dht11;
const int pinLEDblue= 9;
const int pinLEDgreen= 10;
const int pinLEDred= 11;

void setup() {
  Serial.begin(9600);
  pinMode (pinLEDblue, OUTPUT);
  pinMode (pinLEDgreen, OUTPUT);
  pinMode (pinLEDred, OUTPUT);

  analogWrite (pinLEDblue, 255);
  delay(500);
  analogWrite (pinLEDblue, 0);
  delay(500);
  analogWrite (pinLEDgreen, 255);
  delay(500);
  analogWrite (pinLEDgreen, 0);
  delay(500);
  analogWrite (pinLEDred, 255);
  delay(500);
  analogWrite (pinLEDred, 0);
}

void loop() {
  // start working...
  Serial.println("=================================");
  Serial.println("Sample DHT11...");

  // read with raw sample data.
  byte temperature = 0;
  byte humidity = 0;
  byte data[40] = {0};
  if (dht11.read(pinDHT11, &temperature, &humidity, data)) {
    Serial.print("Read DHT11 failed");
    return;
  }

  Serial.print("Sample RAW Bits: ");
  for (int i = 0; i < 40; i++) {
    Serial.print((int)data[i]);
    if (i > 0 && ((i + 1) % 4) == 0) {
      Serial.print(' ');
    }
  }
  Serial.println("");

  Serial.print("Sample OK: ");
  Serial.print((int)temperature); Serial.print(" *C, ");
  Serial.print((int)humidity); Serial.println(" %");

  // DHT11 sampling rate is 1HZ.
  delay(1000);

  if (humidity <= 70)
  {
    analogWrite (pinLEDred, 200);
    delay (1000);
    analogWrite (pinLEDred, 0);
  }

  if (humidity >= 70)
  {
    analogWrite (pinLEDgreen, 200);
    delay (1000);
    analogWrite (pinLEDgreen, 0);
  }
}