I tryed with char caractere[5], now the error is: "incompatible types in assigment of 'int' to 'char [5]'" in the line " caracter = Serial.read();"
I tryed with char caractere[5], now the error is: "incompatible types in assigment of 'int' to 'char [5]'" in the line " caracter = Serial.read();"