#include <LiquidCrystal.h>

const int analogInPin = A0;   // Analog input pin for current measurement
const float R1 = 1000.0;      // Resistance value of R1 in ohms
const float R2 = 1000.0;      // Resistance value of R2 in ohms

LiquidCrystal lcd(8, 9, 4, 5, 6, 7);  // Initialize the library with the numbers of the interface pins

void setup() {
    //Serial.begin(9600);  // Initialize serial communication
    lcd.begin(16, 2);    // Initialize the LCD with 16 columns and 2 rows
    lcd.print("Current:");  // Print initial message on LCD
}

void loop() {
    // Read the analog input
    int sensorValue = analogRead(analogInPin);

    // Convert analog reading to voltage
    float voltage = sensorValue * (5.0 / 1023.0);  // Assuming 5V reference

    // Calculate current using voltage divider formula
    float current = voltage / ((R1 + R2) / R2);  // I = V / (R1 + R2)

    // Print current value to serial monitor
    //Serial.print("Current: ");
    //Serial.print(current, 3);  // Print with 3 decimal places
    //Serial.println(" A");

    // Print current value to LCD
    lcd.setCursor(0, 1);  // Set cursor to column 0, row 1 (second row)
    lcd.print("           ");  // Clear the previous reading
    lcd.setCursor(0, 1);  // Reset cursor to column 0, row 1
    lcd.print(current, 3);  // Print current value with 3 decimal places

    delay(1000);  // Delay for readability
}