When you open the Arduino IDE, select Tools > Board, you will find that the Arduino IDE only has Arduino AVR Boards and no esp32.

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So we need to install the ESP32 board in the Arduino IDE. Follow these steps:

1.Open File >Preferences

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2.Add the development board management address URL.

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3.Copy the URL in the lower box and add it to the “Additional Boards Manager URLs”.

http://arduino.esp8266.com/stable/package_esp8266com_index.json https://www.arduino.me/package_esp32_index.json

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4. After adding the URL, click “OK”.

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5.Click Tools > Board > Boards Manager.

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6.Search for “ESP32” in the BOARDS MANAGER’s search bar and install it.

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7.If the following screen appears, please wait until the installation is complete then turn off the Arduino IDE.

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8.Open the Arduino IDE again and select Tools > Board. You will see the esp32 board appear.

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