curl -fsSL https://raw.githubusercontent.com/arduino/arduino-cli/master/install.sh | sh
Please see https://arduino.github.io/arduino-cli/installation/ for more details around the installation of arduino-cli.
By default the ESP32 board is not supported by arduino-cli. Point the arduino-cli configuration to the ESP32 board package via the URL
arduino-cli config init --additional-urls https://dl.espressif.com/dl/package_esp32_index.json
If you already have arduino-cli installed this command could result in the following response message Config file already exists, use --overwrite to discard the existing one.. Please check with arduino-cli config dump if the additional_urls property contains the esp32 URL (https://dl.espressif.com/dl/package_esp32_index.json). If that is not the case you can the URL via the command arduino-cli config add --additional-urls https://dl.espressif.com/dl/package_esp32_index.json.
arduino-cli core update-index
arduino-cli core install esp32:esp32
arduino-cli compile --fqbn esp32:esp32:esp32 ./src/01-blinky
A more detailed guide of these steps can be found at https://www.survivingwithandroid.com/arduino-cli-compile-upload-manage-libraries-cores-boards/
All the sketches in this repository are tested on an ESP32 ESPRESSIF ESP32-WROOM-32 development board. This board is an ESP32 Development Board with 2.4 Ghz WiFi + Bluetooth Ultra Low Power Consumption Dual Cores ESP-32 Board.
On the internet there are multiple ESP32 board suppliers. For this project I bought the ESP32 Development Board WiFi+bluetooth Ultra Low Power Consumption Dual Cores ESP-32 ESP-32S Board board from Banggood but there are many other suppliers who are selling ESP32 boards, for example Amazon, Ebay and Aliexpress.