JSON link dead, is there an alternative?

[vtjballeng]

https://www.mattairtech.com/software/arduino/package_MattairTech_index.json is dead.

Is there an alternative library link?

[DeqingSun]

Not only the json is dead. I can find an archived version of json. The bigger problem is all packages, toolchains, etc, were also hosted on that dead server.

It seems there is another project https://github.com/wagiminator/SAMD-Development-Boards/tree/main/ArduinoCore-samd was based on this repo. Might worth trying.

[tomaskovacik]

https://github.com/ElectronicCats/ArduinoCore-samd