Hello all, long time reader/first time poster here. I have what might be a simple question: if I have Serial.print() in my code but do not have the serial monitor open, does the Arduino not proceed until I open it? I ask because when I have my board plugged in to the computer via USB, the program seems to execute just fine. Yet when my project stands alone (not connected to the computer) and I power it up I am not convinced that the program is being executed.
Thanks for any advice