@KristjanESPERANTO It is working!! Awesome! Thanks you very much! :)

@KristjanESPERANTO You are welcome, It’s me who should thank you for all the great stuff! :) It’s almost working…
The error messages are gone, but it still shows and hides “both” modules (MMM-MotionEye in my example clip)… :)

Let me know if you want anything else? There is nothing in the “logs” now… :)

@KristjanESPERANTO
I have this problem that has been bugging me for a while…
Check this clip: https://photos.app.goo.gl/Zahc5xqttn33frbKA < From API

My mirror have lot’s of modules many are multi instances (like MMM-MotionEye in this example).
I see the same behavior (or similar) with other modules, mainly my “MMM-homeassistant-sensors”…
I often makes API-calls from Node Red in Home Assistant, like this clip: https://photos.app.goo.gl/K9ktuXGKawoyHEez5

Errors from the log:

0|mmdev  | [2026-01-05 12:24:13.812] [ERROR] undefined Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client
0|mmdev  |     at ServerResponse.setHeader (node:_http_outgoing:700:11)
0|mmdev  |     at ServerResponse.header (/var/www/html/magicmirror/m/node_modules/express/lib/response.js:686:10)
0|mmdev  |     at ServerResponse.json (/var/www/html/magicmirror/m/node_modules/express/lib/response.js:249:10)
0|mmdev  |     at Class.sendResponse (/var/www/html/magicmirror/m/modules/MMM-Remote-Control/node_helper.js:687:28)
0|mmdev  |     at Class.handleSimpleSocketNotification (/var/www/html/magicmirror/m/modules/MMM-Remote-Control/node_helper.js:965:10)
0|mmdev  |     at SHOW (/var/www/html/magicmirror/m/modules/MMM-Remote-Control/node_helper.js:1024:28)
0|mmdev  |     at Class.executeQuery (/var/www/html/magicmirror/m/modules/MMM-Remote-Control/node_helper.js:1049:7)
0|mmdev  |     at Class.answerModuleApi (/var/www/html/magicmirror/m/modules/MMM-Remote-Control/API/api.js:442:14)
0|mmdev  |     at /var/www/html/magicmirror/m/modules/MMM-Remote-Control/API/api.js:299:14
0|mmdev  |     at Layer.handleRequest (/var/www/html/magicmirror/m/node_modules/router/lib/layer.js:152:17)
0|mmdev  |     at next (/var/www/html/magicmirror/m/node_modules/router/lib/route.js:157:13)
0|mmdev  |     at Route.dispatch (/var/www/html/magicmirror/m/node_modules/router/lib/route.js:117:3)
0|mmdev  |     at handle (/var/www/html/magicmirror/m/node_modules/router/index.js:435:11)
0|mmdev  |     at Layer.handleRequest (/var/www/html/magicmirror/m/node_modules/router/lib/layer.js:152:17)
0|mmdev  |     at /var/www/html/magicmirror/m/node_modules/router/index.js:295:15
0|mmdev  |     at param (/var/www/html/magicmirror/m/node_modules/router/index.js:600:14)
0|mmdev  | [2026-01-05 12:24:28.662] [ERROR] undefined Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client
0|mmdev  |     at ServerResponse.setHeader (node:_http_outgoing:700:11)
0|mmdev  |     at ServerResponse.header (/var/www/html/magicmirror/m/node_modules/express/lib/response.js:686:10)
0|mmdev  |     at ServerResponse.send (/var/www/html/magicmirror/m/node_modules/express/lib/response.js:163:12)
0|mmdev  |     at ServerResponse.json (/var/www/html/magicmirror/m/node_modules/express/lib/response.js:252:15)
0|mmdev  |     at Class.sendResponse (/var/www/html/magicmirror/m/modules/MMM-Remote-Control/node_helper.js:687:28)
0|mmdev  |     at Class.handleSimpleSocketNotification (/var/www/html/magicmirror/m/modules/MMM-Remote-Control/node_helper.js:965:10)
0|mmdev  |     at HIDE (/var/www/html/magicmirror/m/modules/MMM-Remote-Control/node_helper.js:1023:28)
0|mmdev  |     at Class.executeQuery (/var/www/html/magicmirror/m/modules/MMM-Remote-Control/node_helper.js:1049:7)
0|mmdev  |     at Class.answerModuleApi (/var/www/html/magicmirror/m/modules/MMM-Remote-Control/API/api.js:442:14)
0|mmdev  |     at /var/www/html/magicmirror/m/modules/MMM-Remote-Control/API/api.js:299:14
0|mmdev  |     at Layer.handleRequest (/var/www/html/magicmirror/m/node_modules/router/lib/layer.js:152:17)
0|mmdev  |     at next (/var/www/html/magicmirror/m/node_modules/router/lib/route.js:157:13)
0|mmdev  |     at Route.dispatch (/var/www/html/magicmirror/m/node_modules/router/lib/route.js:117:3)
0|mmdev  |     at handle (/var/www/html/magicmirror/m/node_modules/router/index.js:435:11)
0|mmdev  |     at Layer.handleRequest (/var/www/html/magicmirror/m/node_modules/router/lib/layer.js:152:17)
0|mmdev  |     at /var/www/html/magicmirror/m/node_modules/router/index.js:295:15

I also experience that when calling a specific module to show with “module_number_modulename”, it often shows the “wrong” module-instance (of that type of module, like MMM-homeassistant-sensors, but the wrong one)… I don’t know if it’s related to this.

Let me know if you need anything more…
Thank you for this great module! :)

Awsome! This changes a lot in my “config”, my Mirror(s) are tightly integrated with Home Assistant.
Thank you for this module!!

I’m currently running 3 different mirrors, but two of them are “mixed” with each other in HA, the third (first one) are separate :). I’ll have to do some more investigating. Have you tested with multiple mirrors against one “HA-MQTT”?

Again, thank you for this! :)

Update: I did some cleaning in the MQTT-queue (with MQTT Explorer) and now it all works. I got to have had my config(s) mixed at some point during my testing. So, now it’s all good. :)

@nowayto Thank you! I’m glad to inspire!
If you have any questions, just write. :)

The mirror has It’s been in use in our family now for many years. Over time it’s been more and more integrated with my Home Assistant setup as well. It’s used for daily information such as news and weather. And of course, it’s been a big part of my daughters “Birthday Treasure Hunts” (check out last years hunt here). :)

I highly recommend to build one… It’s not until you built it you understand how much you need it. :)

Nicely done!
What computer hardware are you using? RPi5?

@justbob Thank you! Great to hear, please do! Share your ideas when you are done. It’s always fun to see what others do. :)

@Matuki Nice work!

@luisestrada Yes, however, It can only be “one” control sensor / HA-module. So, if you have a bunch of lights, and you want to have only one “show” only when that specific light is “on”. You will have to add the module one time / light…
But if you have a specific light that you want to use as a “control sensor” for all the lights, only one module is needed…
I think you could also use an “icon” and some trickery to only show an Icon when the light is lit and when it’s not, not show anything… But not sure… :)

Updated almost all information about this project. My Mirror has been the “information HUB” (together with HA) of the family for many years now!
Even the rest of the family(!) thinks it’s good!

If you want to know more, ask away! :)