#include <LCD_I2C.h>

LCD_I2C lcd(0x27, 16, 2);

uint32_t time {millis()};

void setup() {
  lcd.begin();
  lcd.backlight();
}

void loop() {
  delay(500);
  lcd.clear();
  lcd.print("Pot: ");
  lcd.print(analogRead(A7));
  
  lcd.setCursor(0,1);   // col, lin   0-1
  uint32_t tim = millis();
  lcd.print("Tiempo: ");
  lcd.print(tim-time);

  time = tim;
}