So after some accident I touched GND to 5V, and now it seems to do this. I can still pickup Serial.write('stuff') on computer Terminal, but no way does arduino respond to serial.read (or, whatever I send from PC). I can't see Rx LED turning on neither... what to do :S?

Can program but cannot communicate with Arduino

system April 20, 2012, 3:08pm 3

Interesting, it passed. This means atmega8u2 chip (aka serial chip) is working... But, AVR also does respond to programing. What the heck?

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