during my first prject with the arduino I ran into an unexpected problem, the USB/Serial converter MEGA16U2 seems to have overheated.
I wrote a simple sketch, which sends a IR-Signal using a IR-LED on pin 13 at a specified time using Time.h and TimeAlarms.h. When I left it running overnight the first time, I removed the USB-Connection and powered the Arduino via a 12V power supply. When I woke up the Arduino was really hot and the USB/Serial converter looks like the plastic melted a bit.
The sketch sends a current time every second via serial, could that be the reason for this or was I just unlucky?
Thanks for any input!