Arduino Soldering Station

#include \ #include \ LiquidCrystal_I2C lcd(0x27,20,4); #define tempSensor A0 #define knob A7 #define iron 10 #define LED 3 int minTemp = 27,       //Minimum aquired iron tip temp during testing (°C) maxTemp = 525,      //Maximum aquired iron tip temp during testing (°C) minADC  = 234,      //Minimum aquired ADC value during minTemp testing maxADC  = 733,      //Maximum aquired ADC value during minTemp testing maxPWM    = 255,    //Maximum PWM Power avgCounts = 5,     //Number of avg samples lcdInterval = 80,   //LCD refresh rate (miliseconds) pwm = 0,            //System Variable tempRAW = 0,        //System Variable knobRAW = 0,        //System Variable counter = 0,        //System Variable setTemp = 0,        //System Variable setTempAVG = 0,     //System Variable currentTempAVG = 0, //System Variable previousMillis = 0; //System Variable float currentTemp = 0.0,  //System Variable store = 0.0,        //System Variable knobStore = 0.0;    //System Variable void setup(){   pinMode(tempSensor,INPUT); //Set Temp Sensor pin as INPUT   pinMode(knob,INPUT);       //Set Potentiometer Knob as INPUT   pinMode(iron,OUTPUT);      //Set MOSFET PWM pin as OUTPUT   pinMode(LED,OUTPUT);       //Set LED Status pin as OUTPUT   pinMode(A6,INPUT);       //Passthru Pin   lcd.backlight();   lcd.init();   lcd.clear();   lcd.setCursor(0,1);lcd.print("PRESET T: ");   lcd.setCursor(0,0);lcd.print("ACTUAL T:"); } void loop(){   //--------Gather Sensor Data--------//   knobRAW = analogRead(knob); //Get analog value of Potentiometer   setTemp = map(knobRAW,0,1023,minTemp,maxTemp);  //Scale pot analog value into temp unit   tempRAW = analogRead(tempSensor);  //Get analog value of temp sensor   currentTemp = map(analogRead(tempSensor),minADC,maxADC,minTemp,maxTemp);  //Sacle raw analog temp values as actual temp units   //--------Get Average of Temp Sensor and Knob--------//   if(counter