plymouth1.ino

// Using Plot.ly's Arduino API to visualize Temperature and Humidity Readings from A DHT22 Sensor

#define DELAY_OFFSET 11
#define BEEP_PIN 5
#define audioLOW 250
#define audioHIGH 2000

#define tempLOW 0
#define tempCHILLY 18
#define tempMED 30
#define tempHIGH 36

#include <thermistor.h>
// Calibration coeffs for RSBR-302J-Z50 Teflon-Coated 3k Thermistor
#define A 3.3501
#define B 0.5899
#define C 0.0104
#define R_25C 3000.0 /*ohms*/
#define R_STANDARD 3003.0 /*ohms*/

Thermistor firstThermistor(A,B,C,R_25C,R_STANDARD);

#define greenPIN 9
#define bluePIN 8
#define redPIN 7

int tempRange=tempHIGH-tempLOW;
int tempStep=tempRange/3.;

void beep(unsigned long hz, unsigned long ms);

void setup() {
 
    Serial.begin(9600);
  firstThermistor.begin(0);
  pinMode(BEEP_PIN, OUTPUT);
  
  pinMode(bluePIN, OUTPUT);
  pinMode(greenPIN, OUTPUT);
  pinMode(redPIN, OUTPUT);
  

//digitalWrite(13, HIGH);
}

void loop() {
  
   Serial.println(tempStep);
   // Thermistor stuff 
      double V = firstThermistor.readVoltage();
    double R = firstThermistor.readResistance();
    float T = firstThermistor.readTemperature();
    
   
delay(200);

    Serial.println("---");
    Serial.print("voltage: ");
    Serial.println(V);
    Serial.print("resistance: ");
    Serial.println(R);
    Serial.print("temperature: ");
    Serial.println(T);
    
    
    //T=15;
    //decide which LED to blink, and blink it
    //turn all pins off
    digitalWrite(redPIN, LOW);
    digitalWrite(bluePIN, LOW);
    digitalWrite(greenPIN, LOW);
    
    int blinkPIN;
    
    blinkPIN=redPIN;  
    if (T<tempMED) blinkPIN=greenPIN;
    if (T<tempCHILLY) blinkPIN=bluePIN;
    /*
    if (T<=(tempLOW+2*tempStep)) blinkPIN=greenPIN;
    if (T<=(tempLOW+tempStep)) blinkPIN=bluePIN;
    */
     int j=map(T,tempLOW,tempHIGH,audioLOW, audioHIGH);
beep(j, 250);
Serial.println(j);
 int thisDelay = map(T, tempLOW,tempHIGH, 1500,20);
 
    digitalWrite(blinkPIN, HIGH);
    delay(thisDelay);
    digitalWrite(blinkPIN, LOW);
    
  }
  
  void beep(unsigned long hz, unsigned long ms) {
// reference: 440hz = 2273 usec/cycle, 1136 usec/half-cycle
unsigned long us = (500000 / hz) - DELAY_OFFSET;
unsigned long rep = (ms * 500L) / (us + DELAY_OFFSET);
for (int i = 0; i < rep; i++) {
digitalWrite(BEEP_PIN, HIGH);
delayMicroseconds(us);
digitalWrite(BEEP_PIN, LOW);
delayMicroseconds(us);
}
  }