I buy a lot of electronics stuff on AliExpress. Don't Buy Modern AVRs (Anything this core supports) on AliExpress or From eBay International Sellers Users of 1.8.14 and later must use version 2.6.0 of megaTin圜ore. Prior to megaTin圜ore 2.6.0, manual installation of megaTin圜ore would cause V1.8.14 of the IDE to crash due to this bug when you install the core manually in your arduino folder. Be aware it does have a vulnerable version of Log4J. All the more recent ones gained bugs, and its the last version with a substantial improvement. V1.8.13 is the 'golden version' and the only one I recommend. If you use unsupported software please reproduce all issues in 1.8.13 before reporting.

This thread tracks known issues with 2.0 and workarounds.

These bugs in the IDE prevent board settings from being correctly recognized. If you use it, use the release not an old RC: all versions prior to 2.0.0-RC9.2 known to have critical regressions This core should not be expected to work on such versions, and no modifications will be made for the sake of fixing versions of the IDE that come from package managers for this reason. This is despite their knowing nothing about Arduino or embedded development in general, much less what they would need to know to modify it successfully Those version are notorious for subtle but serious issues caused by these unwise modifications.

The package managers often have the Arduino IDE - but have modified it. Only versions of the Arduino IDE downloaded from should be used, NEVER from a linux package manager. This corrects many of the bugs present in 2.6.xĢ.6.x introduces improved flash footprint of serial significantly while adding features, wire can wake slave from sleep without corrupting data, and much, much more, see the Changelog. When a problem is definitely a defect in the core, you will reduce the time taken to fix it if you create an issue, as I prioritize issues over catching up on discussions. We have a Github Discussions section now. MegaTin圜ore (sometimes 'mTC' informally) - Arduino support for all tinyAVR 0/1/2-Series Questions? Cases where you don't know whether the problem is in your code or the core? Things to show off?

Arduino mega pinout vector