- Download the latest Arduino IDE appropriate for your operating system (https://www.arduino.cc/en/software)
- Open the Arduino IDE
- Close/save the Preferences window
- Open the Boards Manager
- Type "esp32" in the search field and select "esp32 by Espressif Systems" (NOT "Arduino ESP32 Boards")
- Install version 3.3.7
- Type "esp32" in the search field and select "esp32 by Espressif Systems" (NOT "Arduino ESP32 Boards")
- Open the Libraries Manager
- Type "NTP" in the search field and select "NTP by Stefan Staub"
- Install version 1.8.0
- Type "NTP" in the search field and select "NTP by Stefan Staub"