How to use this node? Blauberg-Vento

General
1

Hello everyone,
I'm a beginner in node-red. I want to control my ventilationsystem with heat recovery. I found and installed this node:

https://libraries.io/npm/@michaelkrog%2Fnode-red-contrib-blauberg-vento

one
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In the settings I can only enter the ID of the device.

The communication via network works because the device emits a sound signal when I start the node.
You can find a description here:
https://libraries.io/npm/blaubergventojs

Unfortunately I have no idea how to start. Can anyone help me or give me a tip?

2

Since it doesn't even seem to have been released to npm there is not much you can do other than contact the author. Personally I would not use a node that had not been released unless I was confident of the source.

3

I would try anyway. I have nothing to lose. Can someone help me?

4

I would suggest opening an issue on the nodes GitHub Issues page asking the author ofr some documentation and help.

5

Ok I'll try.

6

Unfortunately, the author does not answer.
I edited the index file of the node:

var e,n;
e=this,
n=function(e){module.exports=function(n)
    {
    var d=new e.BlaubergVentoResource;
    n.nodes.registerType('blauberg-vento',(function(e){
        n.nodes.createNode(this,e),this.on('input',(n=>{
            this.id=e.id,null!=this.id&&(this.debug('Receieved message for device id '+this.id),d.findById(this.id).then((e=>{var i,o,t,s;
                if(null!=e){var l=n.payload;
                    e.speed=null!=(i=l.speed)?i:e.speed,e.mode=null!=(o=l.mode)?o:e.mode,
                    e.manualSpeed=null!=(t=l.manualSpeed)?t:e.manualSpeed,
                    e.on=null!=(s=l.on)?s:e.on,
                    this.debug('Sending message to device: '+e),
                    d.save(e)}else this.warn(`Device not found [id=${this.id}]`)
                }
                )
                )
                )
            }
            )
            )
                }
                    )
                    )
                }
                },
                    'object'==typeof exports&&'undefined'!=typeof module?n(require('blaubergventojs')):'function'==typeof define&&define.amd?define(['blaubergventojs'],n):n((e='undefined'!=typeof globalThis?globalThis:e||self).blaubergventojs);
//# sourceMappingURL=index.js.map

Can someone explain the code to me? Does it show how to use the node?

7

The communication via network works because the device emits a sound signal when I start the node.

The node appears to work but only accepts preformatted messages, you will have to create them yourself - this is not very simple. See the protocol specification
There are other people who did some heavy lifting already, if you are using mqtt, this python script might help you.

8

The node uses the following script:
https://github.com/michaelkrog/blaubergventojs.git
The description says:

"
The modules 2 levels of communication:
A low level client that mimics the communication protocol specified by Blauberg.
A high level resource that wraps the low level client for easier usage.

Low level Example

import { BlaubergVentoClient, FunctionType, Parameter, DataEntry } from 'blaugbergventojs'

const client = new BlaubergVentoClient();

// Find all devices on the local network
const addresses = await client.findDevices();

// Assemble package for reading ON_OFF state
const packet = new Packet(addresses[0].id, '1111', FunctionType.READ, [DataEntry.of(Parameter.ON_OFF)])

// Send package and wait for response.
const response = await client.send(packet, addresses[0].ip);

// Check value
const isOn = response.packet.dataEntries[0].value === 1;

High Level Example

import { BlaubergVentoResource, FunctionType, Parameter, DataEntry } from 'blaugbergventojs'

const resource = new BlaubergVentoResource();

// Find all devices on the local network
const devices = await resource.findAll();

// Change a device and save it
let device = devices.contents[0];
device.speed = 1;
device = await resource.save(device);

"

A "test" folder can be found there. It contains four files:

https://github.com/michaelkrog/blaubergventojs/blob/main/test/blauberg-vento-client.ispecs.ts

https://github.com/michaelkrog/blaubergventojs/blob/main/test/blauberg-vento-resource.ispec.ts

https://github.com/michaelkrog/blaubergventojs/blob/main/test/packet.spec.ts

https://github.com/michaelkrog/blaubergventojs/blob/main/test/setupJest.js

Can you read something from it?

9

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