We use the lib ITEADLIB_Nextion with screen Basic Series model NX8048T050 and NX8048T070 without problem. We don’t use features coming with the screen, we just change value text on the screen and use a couple of toggle switch. We don’t have problems using the Basic Series, the Boron/Argon can be online for long time without interruption.
The problem started when using the Enhanced Series model NX8048K050 (we have only this model to test). We can’t repeat the pattern to crash the Particle but something we make a panic, bus fault, panic, hard_fault. Specifications look the same for both series about current consumption. I don’t use the cell coin battery on the back of the screen and I don,t think is the reason.
I don’t know if @ScruffR can help with the lib but do we need to specify the series model in our firmware ?