So I'm trying to run the script below as a test for reading from the serial. I open the serial monitor, write letters to it, type 'x' to see that it stored the letters. I now close the serial monitor, reopen it, then the L LED on my Arduino UNO flashes 4 times quickly, and then when I type "x" in th…

Variables reset when opening/closing serial monitor

MichaelMeissner November 2, 2012, 3:06pm 2

When you reopen the serial monitor on the Uno R3, it causes a reset signal, and the processor starts over.

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