#include <LiquidCrystal_I2C.h>
#define NB_MAX_DE_ZERO  10 + 1

LiquidCrystal_I2C ecranLCD(0x27, 20, 4);

char variable[NB_MAX_DE_ZERO];

void setup() {
  Serial.begin(9600);
  Serial.print("Defi 2");

  ecranLCD.begin(20,4);
  ecranLCD.setCursor(0,0);
  ecranLCD.print("T.Ecoule");

}

void loop() {
  long unsigned int secondes = millis();

  ecranLCD.setCursor(10,0);
  snprintf(variable, NB_MAX_DE_ZERO, "%010lu \n", secondes);
  ecranLCD.print(variable);
  

}