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119 lines
4.6 KiB
119 lines
4.6 KiB
---
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title: My 7-Inch DMR Dashboard
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aliases: /posts/2020-03-28-my-7inch-dmr-dashboard
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summary: >
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I did not like the small screen and the small housing of my last Hotspot so
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I decided to make a bigger housing where I needed a bigger screen. Look what
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I got myself up and running, with some major options to control the hotspot
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just right off the screen itself. Make sure to install the NextionDrivers
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when you use this layout -- it offers way more possibilities.
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categories: [amateur-radio]
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tags: [nextion,dmr]
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date: 2020-03-28T12:42:44+01:00
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lastmod: 2023-12-31T16:04:50+0000
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---
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I got a Nextion `NX8048K070_011` recently and I built a DMR Dashboard (again)
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for this screen. You see the last five heard stations along with the timestamp
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(hour, minute), the used timeslot and the used talkgroup. For your own
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transmissions the RSSI information as well as the calculated BER will be
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displayed.
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## Model and overview
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I've lost a few words about this topic (Nextion) in general on my first post
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about my 2.4 inch nextion screen
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[in a previous article]({{< ref "6-nextion-dmr-last-heard-dashboard" >}}#the-editor).
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{{< figure src="nxt07_00.jpg" alt="Nextion back view / model" caption="" >}}
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Have a look at the debug preview made within the Nextion Editor. The main screen
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is on the left and on the right side you see the system screen, this screen is
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for system tasks and you need a working NextionDriver installation to use all
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the buttons. Read more about the system screen on the chapter
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[Management view](#management-view).
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{{< figure src="nxt07_01.png" alt="Screen Debug Preview" caption="" >}}
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{{< alert >}}
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You will need NextionDriver installed to use **all the buttons** on the
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SYSTEM page.
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{{< /alert >}}
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~~I have not tested it yet with Pi-Star v4 but it should work as long as MMDVMHost
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runs as root user.~~ Otherwise you should download the HMI files and modify it
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in your NextionEditor LTS.
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{{< alert circle-info >}}
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**Update on March 31, 2020**
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The screen works fine on Pi-Star v4, but without NextionDrivers you won't be
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able to use the start/stop buttons on the system page. In fact, you won't be
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able to use any buttons that execute code on the linux box. Also the version and
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serial number does not get loaded without NextionDrivers.
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{{< /alert >}}
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Choose Nextion Layout L3 HS on Pi-Star -- the screen runs with **115200 baud**.
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### Get NextionDriver
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- <https://github.com/on7lds/NextionDriver>
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You may also find [NextionDriverInstaller] helpful.
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[NextionDriverInstaller]: https://github.com/on7lds/NextionDriverInstaller
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## Get the files (HMI and TFT)
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Download the files from my github repository.
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- <https://codeberg.org/dominic/MMDVM-Nextion-Screen-Layouts>
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*Have a look at the **releases** tab as there are more older versions available
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(the older layout looks ugly on the system page, but has buttons for
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DMRGateway and DAPNETGateway).*
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## Management view
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By "clicking" the page (mainly the header on the top of the screen) you will see
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a management screen with a lot of buttons. I think these are self-explanatory.
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Although I hate to say it, but I had to run MMDVMHost as user *root* -- otherwise
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the screen went all black. I'd rather like to have MMDVMHost running as a
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non-privileged user *mmdvm*. Please let me know if you found a solution to run
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MMDVMHost as user *mmdvm* again.
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Maybe this is the reason why MMDVMHost runs as root on Pi-Star v4 too.
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{{< video "nextion-7inch-dash" >}}
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Above is a short demonstration of the system screen. ~~The Layout might change
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in the future, but you might~~ edit the layout on your own. Just retext the
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buttons and modify the executed command line.
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At the moment the `SHRINK LOGS` button executes `/usr/local/sbin/shrinklog`
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and the `PHP-DASHBOARD ON` and `PHP-DASHBOARD OFF` buttons execute
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`/usr/local/sbin/dashboard start` and `/usr/local/sbin/dashboard stop`
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respectively.
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Most of the code in `shrinklog` has been taken from Pi-Star, which is why I
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won't release that file here, you gonna take the code from Pi-Star and modify
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it to your needs. `dashboard` starts and stops `php-fpm` and places (or removes)
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an `index.html` file in the webroot so it displays a message, that the dashboard
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is offline. Otherwise nginx would display a simple **Bad Gateway** error message.
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## Pictures and images
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The dashboard looks something like this. On your own transmissions there is also
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RSSI and BER information available.
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{{< figure src="nxt07_02.jpg" alt="7 inch dashboard" caption="" >}}
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The duration of the transmission does not match with the duration on the web
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dashboard, but it gives a simple idea of its lenght. I'm not a good programmer
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so I'll let this for now.
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## Resources
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- <https://www.on7lds.net/42/nextion-displays>
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