2.4 inch Nexion Display

[W9KJO]

I picked up a 2.4 inch nexion display for Jumbo Spot.

It is wired up and I have loaded the generic NX3224T024-L3.tft file and loaded it in the nexion

The display lights up and shows MMDVM on the screen and nothing else.

I have tried all sorts of settings.

When ever I set the Configuration to /dev/ttyAMAO and Nexion the Jumbo Spot stops receiving my radio transmissions. If I set to /dev/ttyAMAO and OLED all works perfectly.

I have tried all the different Layout settings in Expert for Nexion. No luck

Could someone share the settings they are using with this screen.

73, Thanks, W9KJO

[F1CXG]

When my Nextion is wired on my jumbospot I choose "Modem" for the output port instead "/dev/ttyAMAO"

(Now i use USB port, it's more easy !!!, not necessary to open the box)

73 de F1CXG

[W9KJO]

USB? Interesting.

How do I connect via USB?

I guess fabricate a cable that is USB Micro for Pi Zero and to the four pin connector on the display? Is there a specific pin out?

What about settings in pi-star?

73 Thanks W9KJO

[2E0LGZ]

USB TTL converter is what you need theres plenty on ebay dirt cheap.........have you wired the nextion correctly? tx-rx and rx-tx on the board i have a jumbospot with the 4 pin nextion screen pins soldered on the board and it is wired red yellow blue and black and ‘modem’ selected in pi-star configuration
Gary 2E0LGZ

[2E0LGZ]

close up of the jumbospot board with nextion wired to the standoff pins

[W9KJO]

I believe I have it wired correctly. The power must be correct and it is displaying the mmdvm logo.

I tried swapping the tx and rx just to see, no change. I'll try swapping to another jumbo spot this weekend. made this jumbo spot has a problem on the board.

73, W9KJO

[F1CXG]

Every time you change your wiring or ouput display port, you must reboot the PI Hotspot...

73 F1CXG

[W9KJO]

As it turns out the MMDVM hat was loaded with 1.3.4 firmware and would not display any data. I had to roll it back to 1.3.3 for it to display.

That was my cure for now unless someone has better information or which I am not aware.

W9KJO