In next days I will try the ATMEGA standalone with internal 8MHZ.
I did download the "hardware breadboard" sketches and I did insert in documents folder (Arduino IDE did recognize them).
But at the moment I'm deloping with the Arduino directly.
Everytime I compile a sketch, it functions very well but I have this warning in bottom output:
"Warning: Board breadboard:avr:atmega328bb doesn't define a 'build.board' preference. Auto-set to: AVR_ATMEGA328BB"
Do you have some idea? Thank you very much!