{ "build": { "core": "teensy", "extra_flags": "-DTEENSY2PP", "f_cpu": "16000000L", "mcu": "at90usb1286" }, "frameworks": [ "arduino" ], "name": "at90usb1286.json", "upload": { "maximum_ram_size": 8192, "maximum_size": 122880, "require_upload_port": true, "protocol": "" }, "url": "https://github.com/MarlinFirmware/Marlin", "vendor": "various" }