This program written with Arduino Code running on ESP8266 (Wemos D1) is just a test to access, read status and control Tuya compatible WiFi Smart Devices (Plugs, Switches, Lights, Window Covers, etc.) ...

Code Arduino Due for test sensors (DronPi) Creative Commons License Disclaimer UNLESS OTHERWISE MUTUALLY AGREED TO BY THE PARTIES IN WRITING, LICENSOR OFFERS THE WORK AS-IS AND MAKES NO ...

A more advanced way to debug your Arduino code is to use breakpoints and watches, which are features of some external debugging tools, such as Visual Studio Code, PlatformIO, or Atmel Studio.