/*
 * Humidity warning
 * Contest instructables 
 * Lighting Challence
 * August 2020
 * 
 * Mark Donners
 * mark.donners@judoles.nl
*/
// first libary stuff
#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
  #include <avr/power.h>
#endif
#include <dht.h>

#define PIN        8 // serial pin neopixels, change is you connect to other pin
#define NUMPIXELS 4 // number of leds ( neopixels) that u are using
#define DHT11_PIN 7  // change this to whatever pin u are using to connect to your humidity sensor

// Next define some variables to use

dht DHT;
int r=0; // for the red color of the neopixel
int g=0; // for the green color of the neopixel
int b=0; // for the blue color of the neopixel


Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);


void setup(){
  Serial.begin(9600);
  #if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)
  clock_prescale_set(clock_div_1);
  #endif

  pixels.begin(); // initiate the neopixels
  pixels.clear(); // make sure all are off after startup
}

void loop(){ // you can comment the following lines about serial output if you don't need them.
  int chk = DHT.read11(DHT11_PIN);
  Serial.print("Temperature = ");
  Serial.println(DHT.temperature);
  Serial.print("Humidity = ");
  Serial.println(DHT.humidity);
// now the actual check of humidity and output to the neopixels
// humans are most happy when humidity is between 40 and 60%--> green color
//When it is above 40%, the color will change to orange
//When it is below 40%, the color will change to red
 if(DHT.humidity<40){r=200;g=0;b=0;}  //red color
  else if(DHT.humidity<60){r=0;g=200;b=0;} // green color
  else if(DHT.humidity<100){r=200;g=100;b=000;} // orange color
  for(int i=0; i<NUMPIXELS; i++) {
    pixels.setPixelColor(i, pixels.Color(r,g,b));
    pixels.show(); 
  }
  
 delay(5000); //hold for 5 seconds...we don't need to update every second
}