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Topic: 3020 timeout after 400ms (Read 20983 times) previous topic - next topic


Just a few days ago I had no problem running the Arduino editor with my chromebook but all of a sudden the past two days every time I try to upload to my Sparkfun Inventors Kit redboard I keep getting this error. Can anyone help?

Sending 3020: receiveData timeout after 400ms


There have been some issues since Friday.
The team are back in the morning so hopefully they will catch up with those and yours will be fixed too.

It may not be the answer you were looking for but its the one I am giving based on either experience, educated guess, google (who would have thunk it ! ) or the fact that you gave nothing to go with in the first place so I used my wonky crystal ball.


Hi @frogballet,

Unfortunately, the Sparkfun Redboard is not one of the boards officially supported by the Arduino Create Chrome app (for a full list please see: http://forum.arduino.cc/index.php?topic=465962.0).

Some suggestions:
  • Try a different USB cable
  • Try loading a sketch from a non-Chrome OS based PC using Create and/or the regular IDE
  • Try pressing reset from before the sketch starts uploading.


We have been experiencing the same error when trying to upload the blink on a Nano but selecting Uno from the Select Board modal. @sandeepmistry you can try to reproduce like that maybe


How is this still such a big issue?
Running into it with an Arduino UNO here...


Hi there,

We've tested with the Uno again on both the Chrome OS devices we have access to and have not encountered the issue.

Could you please provide more info?

  • What version of Chrome OS are you using? chrome://version
  • What Chrome OS device are you using
  • Was this working previously? Does upload work intermediately?
  • Does this issue appear when a particular sketch is load?
  • Do you have access to a non-Chrome OS PC to test if the Uno is functional


I am currently having this same issue with the new Arduino Create for Education App with our student's Dell 11 Chromebooks.

We are using: Version 63.0.3239.140 (Official Build) (64-bit)

It was working previously on Macs before we switched to the Create for Education App on the Chromebooks. It does upload at first, but then the error happens and it will not upload after that without changing Arduino boards

One of the sketches we are using is: https://create.arduino.cc/editor/dan_bell/737f2abe-d3be-4aee-a5f0-ef05a88ef8ac/preview (it's for the Adafruit Neomatrix light boards).


Hi @dan_bell,

Are you using an Uno board? Is the Neomatrix plugged in during sketch upload?


Feb 08, 2018, 07:15 pm Last Edit: Feb 09, 2018, 08:24 pm by dan_bell

Yes to both.

Again, we've recently switched from the CPU-based IDE on MacBook Pros to the Create for Education App and have changed nothing else. It usually uploads normally to the Uno once or twice before this error occurs.


@dan_bell would you be able to try again without the Neomatrix connected, I'm wondering if the Chrome OS devices might not be able to supply enough current over USB?



We've actually also tried with the Uno's plugged in with a separate power source. We still get the error message.


@dan_bell thanks.

I've been able to reproduce the issue here, but only when the Serial monitor of Create is open and I quickly load a sketch right after the other. I'm not sure if it's the same scenario as what you are hitting.

Do you have the serial monitor of Create open when loading the sketch by any chance?



We don't have the serial monitor open when we get the error. Thanks so much for looking into this for us.


There will be a new v1.0.11 release on the Chrome Web Store today, which includes fix for this if the serial monitor was open during sketch upload and sketches were uploaded quickly.

@dan_bell I don't expect it to solve the scenario you are seeing, but let us know. Also, if you refresh the Arduino Create page, does the issue still occur?



Yes, students do still experience the issue after refreshing the app/page.

I did see the new version for Arduino Create on the Chrome App Store, but we are using the version for education, which is pushed out to us via our Google Admin. Is this version of the app updated as well? Would we need to have it reinstalled by our admin to update?

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