This is the multi-page printable view of this section. Click here to print...

For suitable output, we recommend to use Google Chrome (15+) or Microsoft Edge (79+).

As of 2025-09-10

Installing Arduino core for the ESP32

Installation procedure for ESP32 toolchain

This guide outlines the procedure for installing ESP32-specific compilers and libraries compatible with Arduino.

If you already have Arduino core for the ESP32 installed, you can skip this section.

For detailed installation instructions, refer to the official documentation.

Adding Board Information

Launch Arduino IDE 2.x and open Preferences from the toolbar.

Enter the following URL in the Additional Boards Manager URLs field and click OK:

https://espressif.github.io/arduino-esp32/package_esp32_index.json

Open the Boards Manager from the second icon from the top in the sidebar.

Type “ESP32” in the search box and install the esp32 board definition.

Select esp32, not Arduino ESP32 Boards.

We have verified compatibility with version 3.3.0.