[code]void setup() { myFile = SD.open("totali.txt", FILE_READ); if (myFile) char buffer [7] = {0}; for (byte i = 0; myFile.available() && i < 6; i++) { char c = myFile.read(); buffer [i] = c; } sommapar = atoi (buffer); } else { sommapar = 0; } myFile.close();}void loop() { SD.begin(); if (SD.exists("totali.txt")) { SD.remove("totali.txt"); } myFile = SD.open("totali.txt", FILE_WRITE); if (myFile) { myFile.println(sommapar); myFile.close();}