#include <LiquidCrystal.h>
LiquidCrystal lcd(7, 6, 5, 4, 3, 2);

void setup() {
  lcd.begin(16, 2);
}

void loop() {
  int value = analogRead(A0);
  float voltage = value / 1023.0 * 5000.0;
  float current = voltage / 250.0;
  lcd.setCursor(0,0);
  lcd.print("G.tri dong dien: ");
  lcd.setCursor(0,1);
  lcd.print(current);
  lcd.print(" mA");
  delay(200);
}