This was is a weird error I got when trying to upload my code to my Ardiono Nano. I was finally able to solve this.

Arduino Nano avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00

So basically this means that your computer can not talk to your Arduino Nano. There can be many causes but here is what I think is most likely.

You bought an Arduino Nano from amazon, ebay or any Chinese manufacturer. It uses a different chip-set that was made before 2018 January 1st and uses an older Bootloader, but your computer software is set to the newer Bootloader. Nothing wrong with that you just need to know about it.

Check for the bottom of the board for the board for the chip with label “CH340” or something very similar with maybe a different last digit.


You could get a new board from the following link: Arduino Nano.

Or try one of these solutions.

1. If you are using the default Arduino Desktop app to upload your code:

  1. In the Menu under Tools select Board: “Arduino Nano”
  2. Be sure to select ATmega328P (Old Bootloader)

2. If you are using Atom with

Here is a link if you are interested in this IDE. Platform IO IDE.

Your projects platformio.inifile should look like this.

platform = atmelavr
board = nanoatmega328
framework = arduino

Or if you are creating a complete new project be sure to select:Ardiono Nano ATmega 328 and NOT Arduiono Nano ATmega 328 (New Bootloader)

3. Update the Bootloader.

Update the Bootloader for the CH340 chip.

I did not go with this one but if you want to share your story let me know in the comment section.

Other Possible Causes:

Here are some other possible causes if this did not fix your problem:

  • A wire is connected to pin0
  • You have the wrong COM port selected (the IDE does not see your board)
  • Your Arduino drivers are not set properly.

First two should be an easy fix: disconnect pin 0 and select the right COM port.

Driver issue:

Check the bottom of your Arduino see the fine letters on the small chip.

If your Arduino was bough on amazon or ebay and made in china most likely your chip will say something like CH340 or CH341 or something along those lines. If your operating system does not recognize your Arduino here is the driver for you. Download the Windows CH340 Driver.

I hope this helped you, let me know in the comments. Cheers Lehel!