I'm new to this forum...
I've had this Arduino for a few months now, and it's always worked well.
Yesterday I was running a test and at some point I tried to upload a sketch and I got the avrdude error:
avrdude: stk500_recv(): programmer is not responding
I looked up what could be the issue but they couldn't be drivers of course, since I have always used them with this board and I can upload fine onto any other Arduino.
I tried to run the loop back test and it fails: when I turn it on: the L LED is steady on, and if I send something to the board the RX LED lights up, but I get nothing back. The TX LED is always off.
Now, I am inclined to believe that I must have burnt something yesterday by accidentally sending a high voltage to a pin, but I just wanted to make sure that there weren't any other options / tests to run to possibly fix this.
Thank you very much!