Create Integration Solesta 2.0 Zonneboiler

Configuration
1

Since a couple of weeks i’ve installed a Solesta 2.0 Zonneboiler. The system communicates with the Solesta Server for service purposes. It would be nice to have a integration in HA, so i can display the information in lovelace dashboard.

I’ve no clue how to do this. Does anybody already started the development?

2

Today a Solesta 2.0 Zonneboiler is installed at my place to, so I am interested too.

I guess values can probably be obtained from a java script, in the website source I find this
https://monitor.solesta.nl/systeem-status/static/js/main.67292e11.chunk.js
Maybe phantomjs with get.js will do the trick.

So far it looks like Solesta is using esp32/arduino in its boiler, I sent a mail to Solesta to inform if the have an API or they can modify the boiler software to talk to a local MQTT server (temperature and device status - standby / circulating).

3

I did some investigation to the BuildIn Arduino of the Solesta boiler, and could get some data of it. However also noticed there is a non-critical problem with security. I informed the manufacturer about this, I will not share these on the internet.
When I spoke to the manufacturer, they liked the idea to sent data to homeassistant or a similar platform. So we have to wait for this.
Meanwhile I found another solution for homeassistant by using a Wemos D1 Mini (bought a bag full of them at AliExpress) and a Dallas DS18b20 one-wire temperature sensor (again AliExpress).
Software: ESPEasy, just to keep it simple with a MQTT controller as broker.

I placed the Dallas Sensor in the insulation under the pump, so now I am measuring the coldest water at te bottom of the boiler. If this works (yes it works) I am thinking about a second Dallas Sensor so you van measure the temperature that is coming from the roof.

Now waiting what will happen

4

Hi Han,

I am very curious what the results are with the Dallas sensor you installed. Did you receive a reaction from the manufacturer about the non-critical problem?

Can you help me how I can achieve getting data from solesta to HA?

Kind regards

5

@RV1978 @HanSyt , is this what you both eventually did?

Meanwhile I found another solution for homeassistant by using a Wemos D1 Mini (bought a bag full of them at AliExpress) and a Dallas DS18b20 one-wire temperature sensor (again AliExpress).
I placed the Dallas Sensor in the insulation under the pump, so now I am measuring the coldest water at te bottom of the boiler. If this works (yes it works) I am thinking about a second Dallas Sensor so you van measure the temperature that is coming from the roof.

And any news regarding below?

When I spoke to the manufacturer, they liked the idea to sent data to homeassistant or a similar platform. So we have to wait for this.

6

unfortunately I have no further updates about the server of Solesta. The sensor with the dallas at the bottom tube functions, not as good as I would like, since it cools down and does not represent the temperature of the boiler.

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7

What I ended up doing is the following. I looked at the way you can sign in at monitor.solesta.nl and mimicked the behavior on the command line. It turns out that they do have api endpoints available.

With following statement you can retrieve the client_id that you need in the setup that follows below:

bash -c "rm -f solesta_cookies.txt && curl -s -c solesta_cookies.txt --location https://monitor.solesta.nl/api/login --header 'Content-Type: application/json' --data '{\"email\": \"<YOUR_EMAIL>\", \"password\": \"<YOUR_PASSWORD>\"}' >> /dev/null && curl -s --cookie solesta_cookies.txt --header 'Content-Type: application/json' --location https://monitor.solesta.nl/api/customer_account_info"

This will return a json payload and just look for something like "client_id":"<YOUR_CLIENT_ID>".

Now my command line statement in HA looks like:

command_line:
  - sensor:
      name: Solesta water temperatuur
      command: bash -c "rm -f solesta_cookies.txt >> /dev/null && curl -s -c solesta_cookies.txt --location https://monitor.solesta.nl/api/login --header 'Content-Type: application/json' --data '{\"email\": \"<YOUR_EMAIL>\", \"password\": \"<YOUR_PASSWORD>\"}' >> /dev/null && curl -s --cookie solesta_cookies.txt --header 'Content-Type: application/json'  --location https://monitor.solesta.nl/api/get_system_info?client_id=<YOUR_CLIENT_ID>"
      unit_of_measurement: "°C"
      value_template: "{{ value_json.water_temp | float }}"
      json_attributes:
        - energy_tank_kwh
        - pump_status
        - showers
        - system_status
      scan_interval: 300

This also returns some of the other values that are available and set them as attributes on your sensor.