Nextion wired to a DVMEGA

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2E0LGZ
Posts: 35
Joined: Sat Jun 16, 2018 3:10 pm

Nextion wired to a DVMEGA

Post by 2E0LGZ » Fri Sep 14, 2018 12:35 pm

I had a spare UHF DVMEGA and have wired a nextion screen directly to the board it powers up but does not display any information callsigns etc i have enabled ‘modem’ Dev’ etc in the configuration menu on pistar and have the correct TX-RX and RX-TX but still no joy i wonder if theres a procedure i have to do first maybe?
Gary 2E0LGZ

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KE0FHS
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Location: Colorado, USA
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Re: Nextion wired to a DVMEGA

Post by KE0FHS » Fri Sep 14, 2018 1:28 pm

Are you sure you programmed the Nextion screen correctly? For more info about that, Rob van Rheenen, PDØDIB, has posted some great instructions on the Nextion Ham-Radio Screens  Facebook group: https://www.facebook.com/groups/Nextion/

More info:
Last edited by KE0FHS on Fri Sep 14, 2018 2:40 pm, edited 1 time in total.
73, Toshen, KE0FHS
Playing with Pi-Star (unofficial notes about setting up and using Pi-Star):
http://pi-star.hamnotes.com

2E0LGZ
Posts: 35
Joined: Sat Jun 16, 2018 3:10 pm

Re: Nextion wired to a DVMEGA

Post by 2E0LGZ » Fri Sep 14, 2018 2:00 pm

Hi Toshen,unfortunately im not on facebook for personal reasons but i have a nextion file on the screen that i was using on another hotspot and thought i would use the same screen to try out with the dvmega but no information i.e callsign/dmr id,time.WLan information or callsigns etc can be displayed but it works with a usb TTL connected to the pi,i was led to believe that the pins on the dvmega would pass the information to the screen.....there must be a procedure somewere that i havent done ?

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KE0FHS
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Re: Nextion wired to a DVMEGA

Post by KE0FHS » Fri Sep 14, 2018 2:37 pm

I avoid FB as much as I possibly can, but share links to it because I know a lot of people use it. I wish there was a file section to this forum.

Rob has documentation on GitHub that may help: https://github.com/PD0DIB/Nextion_HAM-radio-screens

From a quick look online, it seems you may need to use a USB to TTL UART Serial Converter, but maybe someone more knowledgeable knows an alternative method.
73, Toshen, KE0FHS
Playing with Pi-Star (unofficial notes about setting up and using Pi-Star):
http://pi-star.hamnotes.com

2E0LGZ
Posts: 35
Joined: Sat Jun 16, 2018 3:10 pm

Re: Nextion wired to a DVMEGA

Post by 2E0LGZ » Fri Sep 14, 2018 4:14 pm

Ok Toshen thanks for all the info i shall press on and see what happens if nothing then back to using the TTL it would have been nice to box it all away and not have a usb wire and TTL trailing along side and just having the nextion soldered to the DVMEGA hat
best wishes
Gary 2E0LGZ

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