Be careful of different Displays and Nextion Screens

[K0CJC]

I found that some of the displays you can load onto the Nextion will set the baud rate on the screen and you may need to switch to the HS variant in pi-star. It's fairly straight forward to change the screen back to the lower baud rate - but if you are seeing the communication across the serial line but not seeing updates on the screen, this might be the issue.

Look for 'bauds=X' in the nextion editor under PreInitialization Events when you are pulling up a layout. This will set the default baud rate in the screen itself and it will persist through reboots.

bauds=9600 for Low Speed (Normal) layout [ON7LDS L3]
bauds=115200 for the High Speed (HS) layout [ON7LDS L3 HS]

[W4JEW]

Where is the "Preinitialization Events" option? I'm looking through the various settings in the Nextion Editor and can't find it.

Any time I upload the HMI file, I'm able to select 115,200 and I don't see any errors from the Nextion Editor software. Would it be safe to assume the display is capable of supporting the ON7LDS L3 HS option if that's the case?

[K0CJC]

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