Yes, i noticed what 12V RS-232 COM port works with 5V (i've checked that by tester) Serial. That's a little strange, but 5V duino's pin must recive for sure! But he didn't. Any idea what else can i check ??
Yes, i noticed what 12V RS-232 COM port works with 5V (i've checked that by tester) Serial. That's a little strange, but 5V duino's pin must recive for sure! But he didn't. Any idea what else can i check ??