Getting Started with Arduino IDE 2

An introductory guide to the Arduino IDE 2.

Guide and Tutorial | Getting Started with Arduino IDE 2

Makers, students & professionals have been using the classic Arduino IDE (Integrated Development Environment) ever since Arduino was born.

The Arduino IDE 2 is an improvement of the classic IDE, with increased performance, improved user interface and many new features, such as autocompletion, a built-in debugger and syncing sketches with Arduino Cloud.

In this guide, we will cover the basics of the Arduino IDE 2, where you will find links to more detailed resources on how to use specific features!

You can download the IDE 2 from the Software page.

You can also follow the downloading and installing the Arduino IDE 2.0 tutorial for more detailed guide on how to install the editor.



The Arduino IDE 2 features a new sidebar, making the most commonly used tools more accessible.

Arduino IDE 2

  • Verify / Upload - compile and upload your code to your Arduino Board.
  • Select Board & Port - detected Arduino boards automatically show up here, along with the port number.
  • Sketchbook - here you will find all of your sketches locally stored on your computer. Additionally, you can sync with the Arduino Cloud, and also obtain your sketches from the online environment.
  • Boards Manager - browse through Arduino & third party packages that can be installed. For example, using a MKR WiFi 1010 board requires the Arduino SAMD Boards package installed.
  • Library Manager - browse through thousands of Arduino libraries, made by Arduino & its community.
  • Debugger - test and debug programs in real time.
  • Search - search for keywords in your code.
  • Open Serial Monitor - opens the Serial Monitor tool, as a new tab in the console.


The Arduino IDE 2 is a versatile editor with many features. You can install libraries directly, sync your sketches with Arduino Cloud, debug your sketches and much more. In this section, some of the core features are listed, along with a link to a more detailed article.


Arduino Sketchbook.

Your sketchbook is where your code files are stored. Arduino sketches are saved as .ino files, and must be stored in a folder of the exact name. For example, a sketch named my_sketch.ino must be stored in a folder named my_sketch.

Typically, your sketches are saved in a folder named Arduino in your Documents folder.

To access your sketchbook, click on the folder icon located in the sidebar.

Boards Manager

Boards Manager.

With the Boards Manager, you can browse and install board packages. A board package contains the "instructions" for compiling your code to the boards that are included in the board package.

There are several Arduino board packages available, such as avr, samd, megaavr and more.

To learn more about the Boards Manager, visit the Installing new boards tutorial.

Library Manager

Library Manager.

With the library manager you can browse and install thousands of libraries. Libraries are extensions of the Arduino API, and makes it easier to for example control a servo motor, read specific sensors, or use a Wi-Fi module.

To learn more about the library manager, visit the Installing libraries tutorial.

Serial Monitor

Serial Monitor.

The Serial Monitor is a tool that allows you to view data streaming from your board, via for example the Serial.print() command.

Historically, this tool has been located in a separate window, but is now integrated with the editor. This makes it easy to have multiple instances running at the same time on your computer.

To learn more about the Serial Monitor, visit the Serial Monitor tutorial.

Serial Plotter

Serial Plotter.

The Serial Plotter tool is great for visualizing data using graphs, and to monitor for example peaks in voltage.

You can monitor several variables simultaneously, with options to enable only certain types.

To learn more about the Serial Plotter, visit the Serial Plotter tutorial.

Example Sketches

An important part of the Arduino Documentation are the example sketches that come bundled with libraries. They will show examples of the functions used in practice, illustrating the intended use and features of a library.

Libraries that come bundled as a part of a boards package may also include libraries, and those libraries often include example sketches.

To open the example sketches bundled in either the libraries you have installed manually or that come bundled in board packages, navigate to File > Examples and find the library you're searching for in the list that appears.

Example sketches

In the image above, you can see what the examples list looks like when a UNO R4 WiFi board is connected to your computer.

From here, you can for example navigate to File > Examples > LED_Matrix > MatrixIntro and upload the sketch to your board to show the Tetris animation that came pre-loaded on your UNO R4 WiFi when you first took it out of its box.


Debugger tool.

The debugger tool is used to test and debug programs, hence the name. It can be used to navigate through a program's execution in a controlled manner.

To learn more about the debugger tool, visit the Debugging tutorial.


Autocompletion tool.

Autocompletion is a must-have for code editors, and the 2 version comes well equipped. When writing code, this is useful to understand more about the elements of the Arduino API.

Note that you always need to select your board for autocompletion to work.

To learn more about the Autocompletion tool, visit the Autocompletion tutorial.

Remote Sketchbook

Push and pull your sketches.

The Remote Sketchbook feature lets you sync sketches from your Arduino Cloud sketchbook with your local computer. To enable this feature, you will need to login to your Arduino Cloud account.

You can also create a new Cloud sketch directly in the IDE.

New Cloud sketch

To learn more about the Remote Sketchbook feature, visit the Synchronizing Sketches tutorial.

Firmware & Certificate Uploader

Firmware & Certificate Uploader.

You can upgrade and downgrade the firmware version for your Wi-Fi boards (with a NINA module), and upload SSL Root Certificates directly in the IDE.

To learn more, visit the Firmware & Certificate Uploader tutorial.

The Arduino IDE 2 is an open-source project that is free for anyone to download. You can contribute to the project through donations, or by reporting issues to our GitHub repository.


In this guide, we have presented a series of features & more detailed articles to follow, so that you can enjoy each and every one of the features included in the IDE 2.