Buderus CX100 support

[Chavife]

Is your feature request related to a problem? Please describe.

The CX100 is a USB Wifi module for AC climate systems. Originally it can be used through the MyBuderus application on the phone and nothing else.

Describe the solution you'd like

if possible, add support for the Buderus CX100 dongle

• turn on/off
• set temperature
• set fan speed
• change modes
• swing on/off

Describe alternatives you've considered

I did not found any alternatives for Buderus support into HA.

Additional context

I found that this HomeAssistant integration works with some of the Buderus devices and gave it a shot. The device was connected but not recognized in HA.

This is the CX100 sticker

I went through a debug/raw scan where I had some (actually none) success with HTTP IVT communication

bosch_cli scan -i -d --host=10.0.0.192 --token=101665322 --password=LWee-GCvN-bTPd-dzB7 --protocol=HTTP --device=IVT
Using slower stringprep, consider compiling the faster cython/libidn one.
2024-05-10 22:36:41 INFO (MainThread) [bosch_thermostat_client.bosch_cli] Debug mode active
2024-05-10 22:36:41 INFO (MainThread) [bosch_thermostat_client.bosch_cli] Running scan
2024-05-10 22:36:41 INFO (MainThread) [bosch_thermostat_client.bosch_cli] Successfully connected to gateway. Found UUID: None
2024-05-10 22:36:41 INFO (MainThread) [bosch_thermostat_client.bosch_cli] Successfully saved result to file: rawscan_None.json

with the output

[
    {
        "/systemStates": "not found"
    },
    {
        "/dhwCircuits": "not found"
    },
    {
        "/gateway": "not found"
    },
    {
        "/heatingCircuits": "not found"
    },
    {
        "/heatSources": "not found"
    },
    {
        "/notifications": "not found"
    },
    {
        "/system": "not found"
    },
    {
        "/solarCircuits": "not found"
    },
    {
        "/recordings": "not found"
    },
    {
        "/devices": "not found"
    },
    {
        "/energy": "not found"
    },
    {
        "/events": "not found"
    },
    {
        "/programs": "not found"
    },
    {
        "/zones": "not found"
    },
    {
        "/ecus": "not found"
    },
    {
        "/application": "not found"
    },
    {
        "/gservice_tariff": "not found"
    }
]

[pszafer]

I guess it's uses different uri's than heating modules; you'd need find main uri /SOMETHING, as bosch rest api doesn't allow to get all possible uri's

[Chavife]

Is there any good way/method to scan for them?

[pszafer]

I decrypted apk back in the days and sniff http communication of the module

[ddc5380]

Hello there i've got same issue/need with a MX300 gateway for a kb195i heating system - they are used to reach home system through myBuderus app but despite it seems same hardware/protocol than supported bosch devices, i can't configure it though bosch-custom-component. i'm new here but i think we should convert this issue into developper request

[CeeEll]

Hi, same here, also with MX300. bosch-custom-component seems to get some kind of connection but fails to identify devices.

[CeeEll]

Reached out to the manufacturer about this. API access is limited to MyBuderus App and MyEnergyManager and there are no plans for opening. The MyEnergyManager however uses the Bosch Smarthome Hub. Maybe there is a way. Will try to dig into this.

[goofy79]

I have exactly the same problem with an CX100 and would also be very interested in a solution 👍

[avrel-kb]

@CeeEll any success with your research? I might need a solution for Buderus devices soon. Thx for your feedback

[CeeEll]

Unfortunately not. Was able to connect heatpump to Bosch Hub but unable to control or see anything outside the manufacturer apps. A Bus Connection to the heatpump might be the only way there