How to Install Arduino IDE 2.0 in Fedora 42

Getting Started

4. 4. Launching Arduino IDE

   Finally, Launch and Enjoy the Arduino IDE
   Use the Desktop Launcher:

   
   Or launch from the terminal:

   flatpak run cc.arduino.IDE2

   The Flatpak build of Arduino IDE 2.x requires USB permissions to upload sketches. Ideally, the user should be part of the dialout group.
   Alternatively, add the following rules to /etc/udev/rules.d/50-arduino.rules:
   Using the nano editor:

   sudo nano /etc/udev/rules.d/50-arduino.rules

   Paste in the following:

   KERNEL=="ttyUSB[0-9]*",MODE="0666"
   
   KERNEL=="ttyACM[0-9]*",MODE="0666"
   

   Use Ctrl+Shift+V to paste in nano.
   Then press Ctrl+X to save and exit.

5. 5. Arduino IDE Getting Started

   Getting Started with the Arduino IDE on GNU/Linux

   Arduino IDE QuickStart Guide

   Getting Started with Arduino IDE on Fedora Tutorial