MQTT Report of door sensor state

BeaujolaisBill · February 20, 2024, 2:39pm

I’d like the door sensor state to be reported in the MQTT status stream to help control my add-on chamber lighting.

As-is, my lighting changes color based on status, running/good/bad - I’d like to be able to make the lighting revert to white when the door is open so having that signal available would be very helpful.

ondrej.janovsky · February 21, 2024, 8:27am

Door sensor state is in HomeFlag in MQTT message. It is 32bit number.

github.com

greghesp/ha-bambulab/blob/main/custom_components/bambu_lab/pybambu/const.py

import logging

from enum import (
    Enum,
    IntEnum,
)

LOGGER = logging.getLogger(__package__)


class Features(Enum):
    AUX_FAN = 1,
    CHAMBER_LIGHT = 2,
    CHAMBER_FAN = 3,
    CHAMBER_TEMPERATURE = 4,
    CURRENT_STAGE = 5,
    PRINT_LAYERS = 6,
    AMS = 7,
    EXTERNAL_SPOOL = 8,
    K_VALUE = 9,

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BeaujolaisBill · February 21, 2024, 12:42pm

Thank you - that’s exactly the lead I needed.

hyperkick · January 1, 2025, 7:12pm

The home_flag value remains unchanged no matter if the door is open or closed in my case.

In my case during the test: 6409480

Should i report it as a bug?

MalcTheOracle · January 1, 2025, 7:46pm

Do you have an X series printer?

There is no sensor on my P series printers. At least not one I can see.

hyperkick · January 1, 2025, 8:56pm

I regret i did not mention it but it is indeed the x1c.

Peter_Kolbus · July 2, 2025, 3:50am

From a bit of MQTT capture, I’m seeing that the door state is likely bit 23 of stat, not home_flag – at least with my H2D in LAN mode, with up to date firmware. For example 46A58000 when opened, 46258000 when closed. I’ve opened issue 1421 on the greghesp/ha-bambulab repository. .

I don’t have an X1 - could you check if stat changes for you? If it’s the same for you, that would support fixing the HA integration.

BeaujolaisBill · July 2, 2025, 4:56pm

I’m not using the MQTT feed anymore so I don’t have a good way to test.