Volume Control via Node-Red

Help and Support Help
1

Hello,

I have installed on a second RbPi “Node-Red” with the palette “node-red-contrib-volumio”

I found a “Flow” which works fine with [Play, Stop, Playlist, …].
I tried to extend the flow to control Volume [plus , minus] with out any luck.
The closest I got was to get have Volumio jump to the max. Volume.

I have tried now for hours various ways to format the “eventPush”
================ one of many attempts ================
--------- inject-node: ---------
volume, 40

-----function------
var name = msg.payload;
msg.payload = {
event: “volume”,
volume: name
}
return msg;

Sorry, but I do not understand how I need to format a proper “request”

Can anyone out there please help me on how to set up the flow?
Any Idea is welcome
Thank you very much in advance

2

Thanks to the creator of the palette I got it to work.
Here is the solution:

Luca wrote on Github:

Volume control works for me.

In the following example i put
{“event”:“volume”,“data”:50}
in “volume 50” palette (as msg.payload)

================================
Maybe this is useful for others as well.

Thanks again Luca - you had made my day

3

I second that. Thanks a lot for the right format. :smiley:

4

I think I am completely missing something. I can get play, pause, stop to work, but not volume. Hopefully someone sees my error. I get the error of pushEvent not defined:

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I can send just “volume” and nothing really happens, but when I try to send a volume level I get the above error.

Thank You

5

So… I found a german website and through pictures, I got it to send a volume command.
https://smart-wohnen.org/homematic-den-volumio-music-player-in-die-hausautomatisierung-einbinden/

Any idea how I can pass the data: 10 in the inject node to the to the function nodes data variable?

image
image1219×654 29.7 KB

Thank you again.

6

I figured it out (I think). Hope this helps someone, and thanks to the German website.

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7

The control of volume is working.
I can start, stop the music.

But i will start a soundfile (mp3) directly from my second PI

Pi1 = Node-red PI
Pi2 = Volumio PI

Now, i will start a command from PI_Nodered to start the sound on PI_Volumio

The Sound file is on my PI_Volumio (USB/Music/Test.mp3)

PI_Nodered-IP = 192.168.2.69
PI_Volumio-IP = 192.168.2.70

My try: (with a function node)

var event = msg.payload;

msg.payload = {
event: event,
uri: “mnt/USB/AUDIO/Test/2.mp3”,
}

return msg;

…but it doesn`t work…

my next try:

“event”: “replaceAndPlay”,
“pushEvent”: “pushState”,

but it doesn`t try again!