Can't compile or upload?

Issues can occur when compiling or uploading a sketch. If an error message appears in the console, a quick way to find a solution is to copy and paste it into the search bar. Learn how to:

Fix compilation issues Fix upload issues

Board not detected?

Learn what to do if your Arduino board is missing from the board selector or from the Tools > Port menu.

Fix board detection issues

If the Arduino IDE is unresponsive

Learn what to do if the Arduino IDE hangs, freezes, or becomes unresponsive.

Fix issues with Arduino IDE

Find files used by Arduino IDE

Find where sketches, libraries, board platforms, and other files used by Arduino IDE are stored on your computer. This can be useful for project organization and troubleshooting.

Locate Arduino IDE files

Install a custom core version

The IDE allows for multiple versions of the same core to be installed simultaneously. This can be useful for testing purposes, or for solving compatibility issues with a specific core version.

Learn how to install and use a custom core version

Libraries

Learn more about managing libraries:

Add libraries to Arduino IDE Uninstall a library from Arduino IDE Submit a 3rd-part library to the manager

Text and display size settings

Learn how to change text and display size in Arduino IDE

Change text and display size

Autocomplete feature

Learn how to enable the autocomplete feature in Arduino IDE.

Enable autocomplete

Serial monitor

The serial monitor can be used for debugging, testing concepts, or communicating with the Arduino board

Learn more about the serial monitor

Serial plotter

The serial plotter is a tool for tracking and visualising different data that is sent from your Arduino board.

Learn more about the serial plotter