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• Source Code

  rockfishon • 12/11/2014 at 18:08 • 0 comments

  https://gist.github.com/rockfishon/9ff774cac8dc306963d6/2d7cdfda8622ca834ae21b5ce2a0e1bff0f32264

• Code

  rockfishon • 12/11/2014 at 17:48 • 0 comments

  // stove ver 110 
  #include <Adafruit_MAX31855.h> 
  #include <LiquidCrystal.h> 
  #include <Servo.h> 
  #include <PID_v1.h> 
  // define integers 
  int x = 0; 
  int setBeepBuzzer= 1; 
  int muteBuzzer = LOW; 
  int overTemp = LOW; 
  int stoveMode = HIGH; 
  int stoveShutdown = LOW; 
  double stoveRunTemp = 500; 
  int overtempSetPoint = 600; 
  int servoPos = 15; 
  int roomTempSetPoint = 72; 
  int minStoveDamperSetting = 45; 
  int stoveShutdownSetting = 31; 
  double fdiff = 0; 
  double insideTemp = 70; 
  double f = 0; 
  int fInt = f; 
  int cfg = 0; 
  double Output; 
  double fnew; 
  const int pulseWidthMin = 500; 
  const int pulseWidthMax = 2100; 
  int stoveRunTempInt = stoveRunTemp; 
  // define pin constants 
  const int buttonMutePin = 2; 
  const int thermoCLK = 3; 
  const int thermoCS = 4; 
  const int thermoDO = 5; 
  const int buttonStoveTempSetPointUp = 6; 
  const int buttonStoveTempSetPointDown = 18; 
  const int lcd1 = 7; 
  const int lcd2 = 8; 
  const int lcd3 = 9; 
  const int lcd4 = 10; 
  const int lcd5 = 11; 
  const int lcd6 = 12; 
  const int buzzerPin = 15; 
  const int servoPin = 14; 
  const int buttonRoomTempSetPointUp = 16; 
  const int buttonRoomTempSetPointDown = 17; 
  Servo myservo; 
  Adafruit_MAX31855 thermocouple(thermoCLK, thermoCS, thermoDO); 
  LiquidCrystal lcd(lcd1, lcd2, lcd3, lcd4, lcd5, lcd6); 
  PID myPID(&f, &Output, &stoveRunTemp, 4, .2, 1, DIRECT); 
  void setup() { 
   myservo.attach(servoPin, pulseWidthMin, pulseWidthMax); 
   pinMode(buzzerPin, OUTPUT); 
   pinMode(buttonRoomTempSetPointUp, INPUT); 
   pinMode(buttonRoomTempSetPointDown, INPUT); 
   pinMode(buttonMutePin, INPUT); 
   pinMode(buttonStoveTempSetPointUp, INPUT); 
   pinMode(buttonStoveTempSetPointDown, INPUT); 
   Serial.begin(9600); 
   lcd.begin(16, 2); 
   myservo.write(180); 
   myPID.SetOutputLimits(minStoveDamperSetting, 180); 
   myPID.SetMode(AUTOMATIC); 
   // 1234567890123456 
   lcd.print("Stove Control 8"); 
   lcd.setCursor(0, 1); 
   // 1234567890123456 
   lcd.print("by ROCKFISHON"); 
  // wait for MAX chip to stabilize 
   delay(1000); 
  } 
  void loop() { 
  // read thermocouple and subtract internal heat from lcd and interface board 
   insideTemp = (thermocouple.readInternal() * 9 / 5 + 29); 
   fnew = thermocouple.readFarenheit(); 
   while (isnan(fnew)) { 
   fnew = thermocouple.readFarenheit(); 
   lcd.print("T/C Problem"); 
   } 
   fdiff = fnew - f; 
   f = fnew; 
   fInt = f; 
  // Compute PID 
   myPID.Compute(); 
  //**************************************************** 
  // Damper control section 
  // servoPos = 0 then damper is closed 
  // servoPos = 180 then damper is fully opened 
   if (!stoveShutdown && f <= insideTemp + 10) { // close the damper if the fire is out 
   stoveShutdown = HIGH; 
   } 
   if (stoveShutdown && f >= insideTemp +20) { // open the damper when the fire is started 
   stoveShutdown = LOW; 
   } 
   if (insideTemp <= roomTempSetPoint-.25) { 
   stoveMode = HIGH; 
   } 
   if (insideTemp >= roomTempSetPoint+.25 || overTemp == HIGH) { 
   stoveMode = LOW; 
   } 
   if (stoveShutdown) { 
   myservo.write(stoveShutdownSetting); 
   servoPos = stoveShutdownSetting; 
   } 
   else { 
   if (stoveMode) { 
   myservo.write(Output); 
   servoPos = Output; 
   } 
   else 
   { 
   myservo.write(minStoveDamperSetting); 
   servoPos = minStoveDamperSetting; 
   } 
   } 
  // input loop for 5 seconds 
   for (int y = 0; y < 50; y++) { 
  // read mute button 
   if (muteBuzzer == LOW) { 
   muteBuzzer = digitalRead(buttonMutePin); 
   } 
  // buzzer overtemp alarm section 
   if (muteBuzzer) { 
   if (f < overtempSetPoint) { //resets the mute buzzer variable if the stove temp goes below the set temp 
   muteBuzzer = LOW; 
   overTemp = LOW; 
   } 
   digitalWrite(buzzerPin, LOW); 
   } 
   else 
   { 
   if (f > overtempSetPoint) { 
   digitalWrite(buzzerPin, HIGH); 
   overTemp = HIGH; 
   } 
   else 
   { 
   digitalWrite(buzzerPin, LOW); 
   overTemp = LOW; 
   } 
   } 
  // beep buzzer to remind to close damper 
   if (setBeepBuzzer == 0 && fInt <=175) { 
   setBeepBuzzer = 1; 
   } 
   if (setBeepBuzzer ==1 && fInt >=200) { 
   for (int x = 0; x < 5; x++) { 
   digitalWrite(buzzerPin, HIGH); 
   delay (100); 
   digitalWrite(buzzerPin, LOW); 
   delay (500); 
   } 
   setBeepBuzzer = 2; 
   } 
   // beep buzzer to remind to close drawer 
   if (setBeepBuzzer == 2 && fInt >=400) { 
   for (int x = 0; x < 5; x++)...

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