Electronic board

The brain of the project is in a single electronic board, I used a modification of my Atmega used in week 16 and whose first design was in week 9. I analyzed the quantities of inputs and outputs needed to place the terminals for a more solid wiring. The design used is as follows: And here is the Board. Finally, my Vaporex Board is ready! As you can see, apart from the sensors I used some LEDs that will indicate its operation and an LCD screen of the 20x4 format using the I2C communication protocol(Output week). By using this communication protocol(week14), I get less wiring with my electronic board. Thanks to this screen I will be able to visualize all the measured variables: temperature, pressure and level.

Control logic/Programming (Embedded programming)

When the machine is activated the microcontroller will make a measurement of all the values of the sensors and will show a message indicating that the system is ready.
In our project it will work under 4 main conditions that will allow the operation or not of our machine:

• The deposit must be above the level of resistance. Failure to comply with this condition could cause deterioration in a short period of time.
• The pressure must not exceed 3BAR, to avoid an overload of pressure and can explode as if it were a small bomb
• The interior temperature should not exceed 95º, if it exceeds this temperature the pressure will begin to increase, and we may have a problem.
• If the water level is above the maximum, you can enter our pressure sensor and cause a breakdown

Code

Here is a final code:

#include "Wire.h>
#include "LiquidCrystal_I2C.h>
#include "SoftwareSerial.h>
#include "OneWire.h>
#include "DallasTemperature.h>
SoftwareSerial mySerial(0,1);
LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 16 chars and 2 line display
#define ONE_WIRE_BUS 16
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
const float offset=1.0;
int rele=11;
int pinNivel1 = 8;//BAJO
int pinNivel2 = 9;//MITAD
int pinNivel3 = 10;//LLENO
int estadoNivelAgua1 = 0;//BAJO
int estadoNivelAgua2 = 0;//MEDIO
int estadoNivelAgua3 = 0;//LLENO
int rojo=6;
int blanco=5;
int verde=7;
void setup()
{
  sensors.begin();
  pinMode(rele,OUTPUT);
//  pinMode(pinNivel1, INPUT);
//  pinMode(pinNivel2, INPUT);
//  pinMode(pinNivel3, INPUT);
  pinMode(rojo,OUTPUT);
  pinMode(blanco,OUTPUT);
  pinMode(verde,OUTPUT);
  digitalWrite(rele,HIGH);
  lcd.init();                      // initialize the lcd
  lcd.init();
  // Print a message to the LCD.
  lcd.backlight();
  lcd.setCursor(7,1);
  lcd.print("Vaporex");
  delay(2500);
  lcd.setCursor(7,1);
  lcd.print("       ");
  lcd.setCursor(0,0);
  lcd.print("Data adquisition");
  float sensorValue = (analogRead(A3)*7.0/1023.0)-offset;
  lcd.setCursor(0,1);
  lcd.print("Pressure: ");
  lcd.setCursor(0,2);
  lcd.print("Temperature: ");
  lcd.setCursor(13,1);
  lcd.print(sensorValue);
  sensors.requestTemperatures();
  lcd.setCursor(13,2);
  lcd.print(sensors.getTempCByIndex(0));
  delay(2500);
  lcd.clear();
  lcd.setCursor(7,1);
  lcd.print("System");
  lcd.setCursor(7,2);
  lcd.print("Ready");
  delay(2500);
  mySerial.begin(9600);
}


void loop()
{
  float sensorValue = (analogRead(A3)*7.0/1023.0)-offset;
  sensors.requestTemperatures();
  float temp=sensors.getTempCByIndex(0);
  estadoNivelAgua1 = digitalRead(pinNivel1);
estadoNivelAgua2 = digitalRead(pinNivel2);
estadoNivelAgua3 = digitalRead(pinNivel3);
if (estadoNivelAgua1 == HIGH && estadoNivelAgua2 == HIGH && estadoNivelAgua3 == HIGH) {
mySerial.println("Full level");
digitalWrite(rojo,LOW);
digitalWrite(blanco,LOW);
digitalWrite(verde,HIGH);
}
if (estadoNivelAgua1 == LOW && estadoNivelAgua2 == HIGH && estadoNivelAgua3 == HIGH) {
mySerial.println("Medium level");
digitalWrite(rojo,LOW);
digitalWrite(blanco,HIGH);
digitalWrite(verde,LOW);
}
if (estadoNivelAgua1 == LOW && estadoNivelAgua2 == LOW && estadoNivelAgua3 == HIGH ) {
mySerial.println("low water level");
digitalWrite(rojo,HIGH);
digitalWrite(blanco,LOW);
digitalWrite(verde,LOW);
}
if(estadoNivelAgua1 == LOW && estadoNivelAgua2 == LOW && estadoNivelAgua3 == LOW){
mySerial.println("Tank empty.");
digitalWrite(rojo,HIGH);
digitalWrite(blanco,LOW);
digitalWrite(verde,LOW);
}
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Pressure: ");
  lcd.setCursor(0,1);
  lcd.print("Temperature: ");
  lcd.setCursor(10,0);
  lcd.print("       ");
  lcd.setCursor(10,0);
  lcd.print(sensorValue);
  lcd.setCursor(17,0);
  lcd.print("BAR");
  lcd.setCursor(13,1);
  lcd.print(temp);
  lcd.setCursor(18,1);
  lcd.print("C");
  mySerial.println(sensorValue);
  if(temp(<)22.0 && sensorValue(<)1.0){
    lcd.setCursor(0,2);
    lcd.print("LOW TTEMPERATURE");
    lcd.setCursor(0,3);
    lcd.print("JUST IRONING");
    digitalWrite(rojo,HIGH);
    digitalWrite(blanco,LOW);
    digitalWrite(verde,LOW);
    digitalWrite(rele,LOW);
  }
    if(temp(>)22.0 && temp(<)89.0 && sensorValue(<)3.0){
    digitalWrite(rele,LOW);
    digitalWrite(blanco,HIGH);
    digitalWrite(rojo,LOW);
    digitalWrite(verde,LOW);
    lcd.setCursor(0,2);
    lcd.print("WARM");
    lcd.setCursor(0,3);
    lcd.print("WAIT");
  }

  if(temp(>)90.0 && sensorValue(<)3.0){
    digitalWrite(rele,LOW);
    digitalWrite(verde,HIGH);
    digitalWrite(blanco,LOW);
    digitalWrite(rojo,LOW);
    lcd.setCursor(0,2);
    lcd.print("TEMPERATURE OK");
    lcd.setCursor(0,3);
    lcd.print("STEAM READY");
  }

  if(temp(>)95.0 || sensorValue(>=)3.0){
    digitalWrite(rele,HIGH);
    digitalWrite(rojo,LOW);
    digitalWrite(blanco,LOW);
    digitalWrite(verde,HIGH);
  }

  if(temp(>)100.0 || sensorValue(>=)3.0 || estadoNivelAgua1 == LOW && estadoNivelAgua2 == LOW && estadoNivelAgua3 == LOW || estadoNivelAgua1 == LOW && estadoNivelAgua2 == HIGH && estadoNivelAgua3 == HIGH){
    digitalWrite(rele,HIGH);
    digitalWrite(rojo,HIGH);
    digitalWrite(blanco,LOW);
    digitalWrite(verde,LOW);
    lcd.setCursor(0,2);
    lcd.print("WARNING");
    lcd.setCursor(0,3);
    lcd.print("WAIT");
  }

   delay(500);
}

Download

You can download this files Here:
Code
Final code
Board
Vaporex traces
Vaporex out traces
Vaporex schematic
Vaporex brd