Magic mirror dual screen

sdetweil

@1a2a3a MM only displays on one screen… you can run two instances, and have them display on different monitors… from the same mm folder. just two different config files.

see the MM_CONFIG_FILE env variable

to get an instance on the other monitor you need to add

electronOptions:{x:????,width:yyyy},

to the config.js before the modules:{} list

??? is the width of the 1st display in pixels
yyyy is the width of the second monitor

note that you can also do the MMM-Pages approach, and only display some on a logical page 1 and some on logical page 2 in rotation…

see my fork for a better way to define that
https://github.com/sdetweil/MMM-pages

1a2a3a

@sdetweil oh my just that simple 1 config file and I’m done? And when I run pm2 it will flash to 2 as well?

sdetweil

@1a2a3a have to run two scripts, one w the second config file

sdetweil

@sdetweil see the pm2_MagicMirror.json in ~/MagicMirror/installers

copy, change the name and script name, make a new script mm2.sh
and the env variable

pm2 start pm2_MagicMirror.json(new name)
pm2 save

that give the app pm2 manages a pretty name

you can test w another terminal window
set the env variable, using export variable=
then create the new config.js, w only the modules u want enabled.
then npm start

BKeyport

@sdetweil heck, I’m a little lost there. Can you explain it out a bit better for us? I’m currently running two Magicmirrors back to back with two MM Directories and custom mm.sh files, if I could simplify that, I want to.

BKeyport

@BKeyport What I did was two directories, with seperate configs, then mm.sh does:

cd /home/bkey1970/MagicMirror
DISPLAY=:0 npm start

and mm2.sh does:

cd /home/bkey1970/MagicMirror2
DISPLAY=:0 npm start

To get the 2nd on the 2nd monitor, I added:

        electronOptions: {
    x: 1920
},

to the 2nd config.js, right below the address line, and changed the port to 8081.

sdetweil

@BKeyport @1a2a3a

copy the second config.js to the first mm config directory as config2.js

edit the mm2.sh

cd to the first mm directory(instead of the second)
and add a line

export MM_CONFIG_FILE=${cwd}/config/config2.js
npm start

now. make sure all the modules needed by both instances are installed in the modules folder of the 1st instance.

if they aren’t used by a particular instance, no big deal, same as setting disabled:true on a module config

BKeyport

Interesting - although, now, it’s ignoring the electronOptions: item.

BKeyport

Here’s the answer for @1a2a3a (Edited to show below changes)

Here’s how to do it cleanly: (replace <username> with your pi login name., with width of first monitor)

create two starting scripts:

First, mm.sh is as follows:

cd /home/<username>/MagicMirror
DISPLAY=:0 npm start

Second, mm2.sh is as follows:

cd /home/<username>/MagicMirror
export MM_CONFIG_FILE=${pwd}/config/config2.js
DISPLAY=:0 npm start

Two config files in magicmirror/config next:

First, config.js (this is your second monitor):

       var config = { 
       electronOptions: { x: <width> },
        address: "0.0.0.0",
        port: 8080,
        ipWhitelist: [],
        language: "en",
        timeFormat: 12,
        units: "imperial",
        //logLevel: ["INFO", "LOG", "WARN", "ERROR", "DEBUG"],
        modules: [
...

Second config2.js (this is your first monitor):

       var config = { 
        address: "0.0.0.0",
        port: 8081,
        ipWhitelist: [],
        language: "en",
        timeFormat: 12,
        units: "imperial",
        //logLevel: ["INFO", "LOG", "WARN", "ERROR", "DEBUG"],
        modules: [
...

electronOptions will only work in the file that isn’t redirected to a new config - so use that in the config.js only.

sdetweil

@BKeyport nice description

BKeyport

@sdetweil I figured I might as well make it as clear as possible…

1a2a3a

Thanks all! I’ll give this a go once the monitor arrives!

sdetweil

@1a2a3a @BKeyport

the MM_CONFIG_FILE problem is mine

the correct stmt would be

export MM_CONFIG_FILE=$(pwd)/config/config2.js

notice I changed the brackets to parens and changed the command name

BKeyport

This post is deleted!

sdetweil

@BKeyport I just fixed it

BKeyport

It has to be brackets on my system, FYI.

sdetweil

@BKeyport ok…

1a2a3a

btw, how do i configure the css for the 2 screen?

sdetweil

@1a2a3a you would set the css filename in its config.js

so you would have css/custom.css and css/custom2.css, one for each instance

from the doc
https://docs.magicmirror.builders/configuration/introduction.html

customCss	The path of the custom.css stylesheet. The default is css/custom.css.

BKeyport

@sdetweil alternatively, use the single custom.css file if there’s no conflict.