Arduino Uno - Serial Communication Problem

Forum 2005-2010 (read only) Hardware Bugs & Suggestions
10

No I didn't say that.
You asked:-

guys, how do you physically connect tx/rx pins to your PC?

and I told you.
Now you are asking about alternative TX/RX . The answer to that one is simpler.

  1. Have you got a serial port on the PC - Yes use a MAX202 to connect it up - if no the go to 2:-
  2. Get a serial port on your PC by a USB to RS232 serial adaptor cable and go back to 1.

OR

  1. Get a USB to serial TTL adaptor and wire that directly to the arduino.