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Blinking LED? Answered

When I connect the Arduino to my laptop, the LED blinks 3 times and goes out. If I disconnect the Arduino and reconnect, it blinks 3 times again!!

1 Replies

bekathwiaBest Answer (author)2017-03-09

Yep, that would be the chip running it's startup routine, which flashes to let you know it's on and checking for a new program through the USB cable. If no code upload is detected, it then goes on to run whichever program has been uploaded most recently!

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