I try to enable that the build files are exported to the sketch directory. Unfortunatuly, I could not debug the problem at this moment. This gives the result at the compilation step that the ...

C:/Users/xxx/TuyaOpen/TEST_ARDUINO/src/hello_world.cpp:1:10: fatal error: Arduino.h: No such file or directory 1 | #include "Arduino.h" | ^~~~~~ compilation ...

Relief is here from long compile times when developing firmware for your Arduino project. [Paul] was puzzled by the fact that every file used in a sketch is fully recompiled every time you hit ...