Problem loading ATTinyCore

using Arduino IDE 1.8.19, I'm trying to add ATtinycore (by Spence Konde) but it keeps throwing an error.

My File | Preferences | Additional Boards Manager URLs: is

https://raw.githubusercontent.com/damellis/attiny/ide-1.6.x-boards-manager/package_damellis_attiny_index.json
http://drazzy.com/package_drazzy.com_index.json
https://mcudude.github.io/MicroCore/package_MCUdude_MicroCore_index.json

I can download megaTinyCore and MicroCore but when I try to Install 1.5.2 (current) version, I get the following error on the Board Manager dialog screen:

Error downloading https://azduino.com/bin/micronucleus-cli-2.5-azd1b-i686-mingw32.zip

Please, copy/paste that error report here. Use the < CODE > button in the reply box to format the pasted text.

The Konde's core has dependencies that it should download from azduino.com but apparently the site no longer exists.

I recommend reporting the problem to SpenceKonde/@DrAzzy by submitting an issue to the GitHub repository:

https://github.com/SpenceKonde/ATTinyCore/issues

I checked the issue trackers of the various repositories that might be affected and didn't find any existing reports (there are some about the SSL certificate of the site having expired, but that was a separate problem which had been resolved before the time this new problem started).


If we had a copy of the micronucleus-cli-2.5-azd1b-i686-mingw32.zip file, I could provide instructions for a workaround to the problem. Unfortunately I don't have a copy of that file though. Maybe one of the other forum helpers do.

For the forum helpers, you should have it on your computer if you ever used Arduino Boards Manager to install ATTinyCore version 1.5.2 on a Windows 32-bit computer. If you find it, you can share it here by adding it as an attachment to a reply. We have the checksum for the file so I can verify it is legit.

The file would be located at this path:

C:\Users\<username>\AppData\Local\Arduino15\staging\packages\micronucleus-cli-2.5-azd1b-i686-mingw32.zip

(where <username> is your Windows username)

Note that the AppData folder is hidden by default in "File Explorer". You can make it visible by opening the "View" menu, then checking the box next to "☐ Hidden items".

It looks like the azduino.com website is back online now! Please try installing ATTinyCore again just as you did before @happymac85. Hopefully it will work this time.

I just tried an uninstall and re-install on my PC and it worked for me.

Thanks (I was trying to set up a dev environment for my neighbour and got stuck here).

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