Node-Red / Xiaomi

[jerome]

Hello everyone,

With the arrival of Node-Red on Gladys, I was wondering if someone could help me configure my 2 double switches and 1 single switch to manage them via Gladys.

I followed Pierre Gilles’ video to the letter and so far, no issues.

I installed node-red-contrib-xiaomi-smart-devices to connect my Xiaomi devices and I can detect my switches and sensors.

However, I’m stuck on managing my single switch (to start before trying the doubles) to connect it to Gladys.

On the Gladys side, I created my MQTT topic and added my switch to the dashboard.

On the Node-red side, MQTT node created and connected, the switch node with the debug on/off also works. My Xiaomi device is also recognized and connected.

I’m missing the link between the two, with the right function between the switch and the device I think.

A little help please. I specify that I am far from being an expert and even less Node-red, I am more of a DIYer.

Tell me the screenshots you will need.

[pierre-gilles]

Hello @jerome, let’s look at this together!

@jerome

I’m missing the link between the two, I think with the right function between the switch and the device.

Doesn’t it work just to connect the switch with your « bedroom switch » like I do in the video?

Can you turn your switch on/off from Node-RED?

[jerome]

Hello @pierre-gilles

No, I can’t turn the switch on/off either. It’s connected, but when I connect a switch or an injector, there’s no result. Here’s what is specified in Node-RED:

Inputs

payload.channel_0. string

on - if you want to turn on
off - turn off
switch - change state on → off, off → on

payload.channel_1 string

on - if you want to turn on
off - turn off
switch - change state on → off, off → on

Outputs

Passes the complete json object received from the node to the output

Sample message of Wired Single-Button:

{ « fromip »:« 192.168.0.110:4321 », « ip »:« 192.168.0.110 », « port »:4321, « payload »:{ « channel_0 »:« on », « time »:1556987229523, « sid »:« 158d000128f9dd », « model »:« ctrl_ln1 » } }

Sample message of Wireless Double-Buttons:

{ « fromip »:« 192.168.0.110:4321 », « ip »:« 192.168.0.110 », « port »:4321, « payload »:{ « channel_1 »:« click », « time »:1556987769175, « sid »:« 158d000242275f », « model »:« 86sw2 » } }

Do I need to add a function in between? I probably need to specify channel_0 somewhere?

Thanks for your help because I’ve been looking for tutorials or information on the internet and I haven’t found much about node-red-contrib-xiaomi-smart-devices.

[pierre-gilles]

You need to use an « Inject » node

You can inject data into the payload:

Then you connect your « inject » node to your xiaomi node

You can test if it works by clicking the button on the « inject » node

[jerome]

I tried this operation but nothing happens. In debug mode, I get this message:

msg : string[62]
« Error: Invalid property expression: unexpected at position 8 »

[pierre-gilles]

Can you send me a screenshot of your inject node + a JSON export if possible?

[jerome]

The error I found is because I tested with the space after payload. channel_0 like your screenshot seemed weird to me.

But I had tested without it before, same no debug return though

Export the json??? Is that what’s missing between the two?

[pierre-gilles]

@jerome

The error I found is because I tested with a space after payload. channel_0 like your screenshot seemed weird to me.

Oh no, but there is no space after payload., it’s my mistake, I just took a screenshot quickly ^^

You can put your debug right after your inject to see what your payload looks like?

@jerome

Export the json??? Is that what I’m missing between the two?

No, I was just asking for an export so I can see what you’re doing. It’s not a big deal, the screenshot is fine too

[jerome]

Hello @pierre-gilles

Thanks to debugging, I can finally turn the light on and off via my switch

Here is the result:

I will try to control it via Gladys now

[pierre-gilles]

Great! Keep us updated, and if you can, when you get there, make a small tutorial in the « Tutorials » category of the forum, that will help other people!

[jerome]

I’m a bit stuck here.

I can’t figure out how to connect MQTT to the actuator for my Xiaomi switch.

Phase 1: As in the video, OK in debug I receive the value 0 and 1
Phase 2: With the input I can turn the light on or off

However, between the switch and the actuator, what node should I add? I thought about using a function, but since I’m not very familiar with coding, it’s not straightforward.

For me, it should be told that:
msg.payload = msg.payload.channel_0
that 0 = Off and 1 = On
and that the device is the SID: …

Am I on the wrong track or not?

[pierre-gilles]

@jerome

However, between the switch and the shareholder, which node should I add?

From the switch to the « Off » button, you just need to draw a line with your mouse, all the work is already done You’re really just 1 millimeter away from the result haha

[jerome]

I’ve already tried and it’s not possible with these two outputs. I don’t have an input on the inject.

[pierre-gilles]

Oh my bad! I know there’s a node that does the same as the inject but with an input

[jerome]

There is the switch or the button in the dashboard but I can’t set them up.

[VonOx]

For me, the switch is useless, you just need to format the payload if necessary for your actuator.

[jerome]

Format the payload? You lost me, sorry

[VonOx]

If msg.payload = 1 then msg.payload.channel0 = on

What your actuator receives is the payload (which must be in the correct format)

You can perform this transformation with a function block

Function - The Core Nodes : Node-RED

if (msg.payload === 0) {
msg.payload.channel0 = off
} else {
.....

[jerome]

Something like this?

if (msg.payload === 0) {
var cmd = {
« sid » : « XXXXXXXXXXX »
}
msg.payload.channel0 = off
}
else { (msg.payload === 1)
msg.payload.channel0 = on
}
return msg;

[pierre-gilles]

Sinon @jerome @VonOx, the « Change » function might be more suitable if you’re not comfortable with the code The Core Nodes : Node-RED

In your case, you can place it after your switch, and do a « set » where you set the correct property, I don’t know if that’s clear for you @jerome …