 // initialize the LCD screen
 Adafruit_ST7735 tft = Adafruit_ST7735(lcdCS, lcdDC, swReset);
 
-// Indicate status variables: 0 off; 1: on
-int start      =  OFF;
-int stopnow    =  ON;
-
 // shouldn't these be #defines or at least const double, const int, etc?
 double tempSet         =  350;        // farenheit
 double tempInc         =  3 ;         // Temperature increament per minutes

      currTime = millis()-startTime;
    }
    else if (status == RUNNING) {
      status = RUNNING;
      currTime = millis()-startTime;
    }
    else if (status == STOP) {

  Serial.println(tempAverage);
}

// Not sure exactly what this is doing.
// It's deciding how to update the heaters, anyway.
void set_heaters() {
  currTempSet=min(350, currTime/1000/60*tempInc+tempInitial);
  tempSetLow= currTempSet-tempErrRange;
  tempSetHigh= currTempSet+tempErrRange;  

  if (tempAverage < tempSetLow && tempAverage > 32) {
    if (tempAverage < tempSetLow - tempThreshold) all_heaters_on();
    else one_heater_on();
  }
  else {
    if (tempAverage > tempSetHigh + tempThreshold)
      all_heaters_off();
    else 
      one_heater_off();
  }
}

// Set up all the pins and serial connection
void setup() {
  Serial.begin(9600);
  
