Once I upload a sketch to the board, how long can I expect it to stay working? I would like to use my seeeduino mega to get inputs from my house and send some sort of message to my computer. So if I program it to do this, and unplug from the compiler, how long can I expect it to run that sketch? is it burned into the eeprom or do I need to do that to make it work like that forever. . . or will the sketch disappear if left unplugged for a few weeks?
Thanks. Didnt know how to search for this answer on Google.