Get ready for 0.1.0

- tuning once more the pid
- enabling fan while on full power
- detect missing sensor
- ...

firmware/weckkubator/weckkubator.ino

@@ -1,3 +1,12 @@
+/* Weckkubator - Weck(topf)-(In)kubator
+ * 
+ * Version 0.1.0
+ * 
+ * Fliegerjohn - 06.05.2024
+ */
+
+
+
 #include <Wire.h>  // Support for I2C --> LCD
 #include <LiquidCrystal_I2C.h>  // Support for PCF8574 --> LCD
 #include <OneWire.h>  // 1-Wiresupport for DS18B20
@@ -16,7 +25,7 @@ DallasTemperature sensors(&oneWire);  // declare sensors
 double pidset, watertemp, output;
 
 // PID adjustment
-double Kp=500, Ki=10, Kd=0;
+double Kp=500, Ki=3, Kd=1;
 PID myPID(&watertemp, &output, &pidset, Kp, Ki, Kd, DIRECT);
 int WindowSize = 5000;
 unsigned long windowStartTime;
@@ -27,6 +36,7 @@ int poti;
 
 // time
 unsigned long previousMillis;
+unsigned long previousMillisFan;
 
 
 // °C for LCD
@@ -60,31 +70,15 @@ void setup() {
   // Setup PID
   windowStartTime = millis();
   myPID.SetOutputLimits(0, WindowSize);  //tell the PID to range between 0 and the full window size
-  myPID.SetMode(AUTOMATIC);  //turn the PID on
+  myPID.SetMode(AUTOMATIC);  //turn on the PID
   
   // Greetings
-  lcd.print("Weckkubator 0.0.1");
+  lcd.print("Weckkubator 0.1.0");
   delay(3000);
-  lcd.clear();
+
 
   // Setup LCD
-  // Output temperatureset
-  lcd.setCursor(0, 1);
-  lcd.print("set:    ");
-  lcd.print(pidset);
-  lcd.write((byte)0);
-
-  // Output watertemp
-  lcd.setCursor(0, 2);
-  lcd.print("temp:   ");
-  lcd.print(watertemp);
-  lcd.write((byte)0);
-  lcd.print("C");
-
-  // output PID
-  lcd.setCursor (0, 3);
-  lcd.print("output: ");
-  lcd.print(output);
+  setupdisplay();
 
 }
 
@@ -92,7 +86,7 @@ void loop() {
 
   // run pid
   pid();
-
+  
   // update LCD
   unsigned long currentMillis = millis();
   if (currentMillis - previousMillis >= 250) {
@@ -101,7 +95,13 @@ void loop() {
     lcdoutput();
     previousMillis = currentMillis;
   }
-  
+
+  // start fan if heating on full power
+  if (currentMillis - previousMillisFan >= 10000) {
+    if (output >= 4800) digitalWrite(fan, HIGH);
+    else digitalWrite(fan, LOW);
+    previousMillisFan = currentMillis;
+  }
 }
 
 //------------------------------------------
@@ -127,6 +127,8 @@ void readtemp() {
    */
   sensors.requestTemperatures();
   watertemp = sensors.getTempCByIndex(0);
+
+  if (watertemp == -127.00) missingsensor();
   
 }
 
@@ -170,3 +172,50 @@ void settemp() {
 
   
 }
+//------------------------------------------
+// Missing Sensor
+void missingsensor() {
+  // turn of all output
+  digitalWrite(wecktopf, LOW);
+  digitalWrite(fan, LOW);
+
+  // Clear LCD
+    lcd.clear();
+    
+  do {
+    lcd.setCursor(0, 0);
+    lcd.print("Error:");
+    lcd.setCursor(0, 1);
+    lcd.print("Missing Sensor");
+    sensors.requestTemperatures();
+    watertemp = sensors.getTempCByIndex(0);
+    } while (watertemp == -127.00);
+
+  setupdisplay();
+}
+
+//------------------------------------------
+// Setup LCD
+void setupdisplay() {
+
+  // Clear LCD
+  lcd.clear();
+  
+  // Output temperatureset
+  lcd.setCursor(0, 1);
+  lcd.print("set:    ");
+  lcd.print(pidset);
+  lcd.write((byte)0);
+
+  // Output watertemp
+  lcd.setCursor(0, 2);
+  lcd.print("temp:   ");
+  lcd.print(watertemp);
+  lcd.write((byte)0);
+  lcd.print("C");
+
+  // output PID
+  lcd.setCursor (0, 3);
+  lcd.print("output: ");
+  lcd.print(output);
+}