//[email protected] - 2024-07-29

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);  // TINKERCAD WANTS THIS TO BE LiquidCrystal_I2C lcd(32,16,2);

int timedata = A0; // analog pin0 , a Potentiometer is connected with A0 pin of Arduino.
int timerawdata = 0; // stores the value coming from the Potentiometer.
int settime = 1; // time duration in milliseconds (initial value)
int startb = 0;  // button to start the welding
int relay = 2;   // the output relay
int ReadyLed = 3; // when this LED is turned ON, it means you can start the welding
int Sflag = 0;   // stops the unnecessary repetition of code.
int spotcount = 0; // counts the amount of spot welds
int refresh = HIGH; // refresh the display
int forceddelay = 500; // forced delay between pulses (ms)


void setup(){
	Serial.begin(9600);
	lcd.init();
  lcd.begin(16,2);
	lcd.backlight();
 	pinMode(startb, INPUT_PULLUP);
 	digitalWrite(startb, HIGH);
	pinMode(timedata, INPUT); // POTENTIOMETER CONNECTED
 	pinMode(relay, OUTPUT);
 	digitalWrite(relay, LOW);
 	pinMode(ReadyLed, OUTPUT);
 	delay(100);
 	digitalWrite(ReadyLed, HIGH);
  
	lcd.clear();
	lcd.setCursor(0, 0);
	lcd.print("melissa ");
	lcd.setCursor(0, 1);
	lcd.print("VERSION 1.0");
  delay (2000);
	lcd.clear();  
}


void loop(){
  if (timerawdata - 100  >= analogRead(timedata) ||timerawdata + 100  <= analogRead(timedata) ){
    timerawdata = analogRead(timedata);
    settime = map(timerawdata, 0, 1023, 10, 1000); // 0.1 to 1000 milliseconds
    refresh = HIGH;
		Serial.println("refresh");
  }
  
  if (digitalRead(startb) == LOW){
    digitalWrite(ReadyLed, LOW);
	  digitalWrite(relay, HIGH);
	  delay(settime);
	  digitalWrite(relay, LOW);
	  digitalWrite(ReadyLed, HIGH);
	  spotcount = spotcount + 1;
	  refresh = HIGH;
	}
  
  if (refresh == HIGH){
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("ON Time:");
    lcd.print(settime);
    lcd.print("ms");
    lcd.setCursor(0, 1);
    lcd.print("Pulses:");
    lcd.print(spotcount);
    refresh = LOW;
  }
  
  if (spotcount > 0 && settime < forceddelay){
	  delay (forceddelay - settime);
	}

  if (digitalRead(startb) == HIGH && spotcount != 0) {
	  spotcount = 0;
	}
  
}