Smart Home Automation Forum

 Before using KC868-A16, you need to set the parameters of the preference
Copy the following URL: https://dl.espressif.com/dl/package_esp32_index.json

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I have tried to make my first Sketch including Arduino.h & PCF8574.h for testing I-O and get to know how to program in ARDUINO IDE 2.0.4

As recommended in above thread I have selected the NodeMCU-32S board and the IDE tells me that debugging is not supported by NodeMCU-32S

Which of the other esp32 boards can I use that will support debugging?

There are two requirements for support to be available for use of the Arduino IDE integrated debugger with the ESP32 boards:

The debugger extension must have support for the ESP32 target
The ESP32 boards platform authors must configure their platform to provide the necessary information to the debugger

details you can search by "google".