#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 16 chars and 2 line display

const int redLedPin = 12;
const int greenLedPin = 10;
const int yellowLedPin = 8;
const int blueLedPin = 7;
const int analogA0Pin = A2;
const int analogA1Pin = A3;

void setup() {
    pinMode(redLedPin, OUTPUT);
    pinMode(greenLedPin, OUTPUT);
    pinMode(yellowLedPin, OUTPUT);
    pinMode(blueLedPin, OUTPUT);
    Serial.begin(9600);
      // LCD stuff
    lcd.init();
    lcd.backlight();
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Issokay");
    lcd.setCursor(0, 1);
    lcd.print("   ANDREW   ");
    delay(2000);
    lcd.clear();
}

void loop() {
    // Read voltage at pin A0
    float voltageA0 = analogRead(analogA0Pin) * 3.3 / 1023.0; // Convert to voltage (assuming 5V reference)
    
    // Read voltage at pin A1
    float voltageA1 = analogRead(analogA1Pin) * 3.3 / 1023.0; // Convert to voltage (assuming 5V reference)

    // Check voltage at pin A0
    if (voltageA0 >= 1.4 && voltageA0 <= 2.0) {
        digitalWrite(redLedPin, !digitalRead(redLedPin)); // Toggle red LED
    } else if (voltageA0 == 0.0) {
        digitalWrite(greenLedPin, !digitalRead(greenLedPin)); // Toggle green LED
    }

    // Check voltage at pin A1
    if (voltageA1 >= 1.4 && voltageA1 <= 2.0) {
        digitalWrite(yellowLedPin, !digitalRead(yellowLedPin)); // Toggle yellow LED
    } else if (voltageA1 == 0.0) {
        digitalWrite(blueLedPin, !digitalRead(blueLedPin)); // Toggle blue LED
    }

    // Print voltages to the LCD
    lcd.setCursor(0, 0);
    lcd.print("Voltage A0: ");
    lcd.setCursor(13, 0);
    lcd.print(voltageA0);
    lcd.setCursor(0, 1);
    lcd.print("Voltage A1: ");
    lcd.setCursor(13, 1);
    lcd.print(voltageA1);

    delay(100); // Adjust delay as needed
}