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random_object_build_challenge_2023:random_build_wouter

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random_object_build_challenge_2023:random_build_wouter [2023/11/20 11:35] – wrusmanrandom_object_build_challenge_2023:random_build_wouter [2023/12/04 12:07] (current) – wrusman
Line 33: Line 33:
 Het plaatje bovenop wordt mooi heet, de binnenkant niet zo koud als gehoopt, maar ik denk dat hij iets koels wel redelijk koel kan houden. Het plaatje bovenop wordt mooi heet, de binnenkant niet zo koud als gehoopt, maar ik denk dat hij iets koels wel redelijk koel kan houden.
  
 +<code>
 +#include <PID_v1.h>
 +#include <Thermistor.h>
 +#include <NTC_Thermistor.h>
 +#include <Wire.h> 
 +#include <LiquidCrystal_I2C.h>
  
 +#define SENSORTOP_PIN             A6
 +#define SENSORINSIDE_PIN          A7
 +
 +#define REFERENCE_RESISTANCE   10000
 +#define NOMINAL_RESISTANCE     10000
 +#define NOMINAL_TEMPERATURE    25
 +#define B_VALUE                4300
 +
 +//Define Variables we'll be connecting to
 +double Setpoint, Input, Output;
 +//Define the aggressive and conservative Tuning Parameters
 +
 +double aggKp=4, aggKi=0.2, aggKd=1;
 +double consKp=1, consKi=0.05, consKd=0.25;
 +
 +//Specify the links and initial tuning parameters
 +PID myPID(&Input, &Output, &Setpoint, consKp, consKi, consKd, DIRECT);
 +Thermistor* thermistorTop;
 +Thermistor* thermistorInside;
 +LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 16 chars and 2 line display
 +
 +void setup()
 +{
 +  Serial.begin(9600);
 +    Setpoint = 50;
 +
 +  thermistorTop = new NTC_Thermistor(
 +    SENSORTOP_PIN,
 +    REFERENCE_RESISTANCE,
 +    NOMINAL_RESISTANCE,
 +    NOMINAL_TEMPERATURE,
 +    B_VALUE
 +  );
 +  thermistorInside = new NTC_Thermistor(
 +    SENSORINSIDE_PIN,
 +    REFERENCE_RESISTANCE,
 +    NOMINAL_RESISTANCE,
 +    NOMINAL_TEMPERATURE,
 +    B_VALUE
 +  );
 +  myPID.SetMode(AUTOMATIC);
 +  
 +  lcd.init();                      // initialize the lcd 
 +  lcd.init();
 +  // Print a message to the LCD.
 +  lcd.backlight();
 +  lcd.setCursor(5,0);
 +  lcd.print("BiBrew");
 +  delay(1000);
 +  lcd.clear();
 +}
 +
 +void loop()
 +{
 +    // Reads temperature
 +  const double celsiusTop = thermistorTop->readCelsius();
 +  const double celsiusInside = thermistorInside->readCelsius();
 +  // Output of information
 +  Serial.print("Top Temperature: ");
 +  Serial.print(celsiusTop);
 +  Serial.println(" °C, ");
 +  Serial.print("Inside Temperature: ");
 +  Serial.print(celsiusInside);
 +  Serial.println(" °C, ");
 +
 +  Input = celsiusTop;
 +  
 +  double gap = abs(Setpoint-Input); //distance away from setpoint
 +  if (gap < 10)
 +  {  //we're close to setpoint, use conservative tuning parameters
 +    myPID.SetTunings(consKp, consKi, consKd);
 +  }
 +  else
 +  {
 +     //we're far from setpoint, use aggressive tuning parameters
 +     myPID.SetTunings(aggKp, aggKi, aggKd);
 +  }
 +  
 +  myPID.Compute();
 +  analogWrite(3,255-Output);
 +  Serial.print("Output Power: ");
 +  Serial.println(255-Output);
 +  Serial.println("");
 +  
 +
 +  lcd.setCursor(0,0);
 +  lcd.print("Top: ");
 +  lcd.print(celsiusTop);
 +  lcd.print(" \337C");
 +  
 +  lcd.setCursor(0,1);
 +  lcd.print("Inside: ");
 +  lcd.print(celsiusInside);
 +  lcd.print(" \337C");
 +  delay(1000);
 +}
 +
 +</code>
  
  
  
  
random_object_build_challenge_2023/random_build_wouter.1700476536.txt.gz · Last modified: 2023/11/20 11:35 by wrusman

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