That guide isn’t very specific about where to extract the .tar.xz file to. It just says: “When the download is finished, expand the Arduino tar.xz package into a folder where the Arduino Software (IDE) will run.”
The best place is probably under /opt/. If you want it there, move the .tar.xz file into /opt/ and extract it there. You may have to do this using sudo or as root and the same may apply to running the ./install.sh command but try each as your own user ID first.
However, if you just want it installed locally in your own Home folder, I wouldn’t put it in a folder on the Desktop. I’d create a folder under Home called something like ArduinoIDE (don’t use just Arduino). Move the .tar.xz file into this folder and extract it there.
Once installation is complete, you can delete the .tar.xz file, if you wish.
If you’ve installed a version of the Arduino IDE using your distribution’s package manager, you should uninstall that first.
It looks to me like the Arduino people have now added the Arduboy library to the list of available libraries. If this is true (someone else should try it), Step 2 of this guide should be changed to instruct on installing the library using the Library Manager.
From the IDE menus, select: Sketch -> Include Library -> Manage Libraries...
The Library Manager window will appear.
In the Filter your search… field, at the top right, enter arduboy. The Arduboy library should be listed.
Click on a blank area in the Arduboy library listing.
Select the latest version available from the drop down menu.
Click on Install. The word INSTALLED should appear at the top right of the listing.
Close the Library Manager window. The Arduboy library is now installed and ready for use.
Alright, so i’m not dealing with linux anymore. Just purchased a new PC. When I plug in the Arduboy, nothing displays on the computer. The Arduboy is not recognized. I have tried multiple usb ports. Nothing seems to popup on my computer when I plug into any of them.
If this is the case, then the Quick Start Guide should be updated to instruct that using the library manager is the primary method of installing the library. Downloading the .zip and installing manually should now be a secondary alternative.
Physically, the Arduboy (86 mm x 54 mm) is actually larger than a Leonardo (69 mm x 53 mm).
From a software point of view, they both use the ATmega32U4 processor and Leonardo bootloader, which is all that’s really required to look like a Leonardo. The main differences are the power supply circuitry, plus the OLED display, buttons, speaker and RGB LED added to the Arduboy, with the shield connection headers, ICSP header and external power jack removed.