Select your board type and port
You'll need to select the entry in the Tools > Board menu that corresponds to your Nano
board.
NOTE: We have updated the NANO board with a fresh bootloader. Boards sold from us from
January 2018 have this new bootloader, while boards manufactured before that date have the
old bootloader. First, make sure you have the Arduino AVR Core 1.16.21 or later looking at
the Board Manager. Then, to program the NEW Arduino NANO boards you need to chose
Processor > "ATmega328P". To program old boards you need to choose Processor >
"ATmega328P (Old Bootloader)". If you get an error while uploading or you are not sure
which bootloader you have, try each type of processor 328P until your board gets properly
programmed.
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Upload and Run your first Sketch
To upload the sketch to the Arduino Nano, click the Upload button in the upper left to load
and run the sketch on your board:
Wait a few seconds - you should see the RX and TX leds on the board flashing. If the upload
is successful, the message "Done uploading." will appear in the status bar.
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