ble_monitor

ble_monitor copied to clipboard

Sensor Description

SwitchBot IP65 Indoor/Outdoor Thermo-Hygrometer

Additional information

Seems to be a simpler version of the already-supported Switchbot Meter (with LCD): https://eu.switch-bot.com/pages/switchbot-indoor-outdoor-thermo-hygrometer

I have already managed to extract temp/hygro and battery from the two BLE advertisements (see below):

    if sdid == 22:
        # "service data"
        battery = int(value[8:10], 16)
    elif sdid == 255:
        # "manufacturer specific data"
        byte10 = int(value[20:22],16)
        byte11 = int(value[22:24],16)
        byte12 = int(value[24:26],16)
        tempc = ((byte10 & 0x0F) * 0.1 + (byte11 & 0x7F)) * (1 if ((byte11 & 0x80) > 0) else -1)
        humidity = byte12 & 0x7F

Happy to help with the integration (new to BLE and BLE monitor, but know my way around Python).

BLE advertisements

2023-07-06 08:02:37.644 INFO (Thread-13) [custom_components.ble_monitor.ble_parser] BLE advertisement received from MAC/UUID d65d706dc117: service data: [b'\x06\x16=\xfdw\x00\xe4']manufacturer specific data: []local name: UUID16: None,UUID128: None
2023-07-06 08:02:39.649 INFO (Thread-13) [custom_components.ble_monitor.ble_parser] BLE advertisement received from MAC/UUID d65d706dc117: service data: []manufacturer specific data: [b'\x0f\xffi\t\xd6]pm\xc1\x17\xc7\x03\x00\x97;\x00']local name: UUID16: None,UUID128: None

BTW, I am currently detecting the models by identifying the 6909 at the beginning of the manufacturer string. But that seems to be tied to all Switchbot devices. Not sure where to find a more specific ID.

Update:

Digging around in the code a bit, I was able to add support for parsing the service data. Adding this condition to parse_switchbot():

    elif msg_length == 7 and device_id == 0x77:
        device_type = "METER THO"
        firmware = "Switchbot"
        result = {
           "battery": data[-1]
        }
    else:
        device_type = "unknown"

The battery info seems to be parsed and returned, but for some reason does not appear in the entity attribute in HAAS interface 😞

For temp/humidity, we need to parse the manufacturer data packet, which might be a bit more hackish to spot: we can check that is starts with 6909 + device MAC address + 6 bytes (containing temp-humidity)…

I have released 12.4.0-beta for testing (enable beta versions in HACS).

There is an issue with the battery parsing, as I get 228 as result. And temperature is also a bit low (-0.7°C). However, with this version, the sensors should be created and you can try to modify the code to make it work. Let me know what I have to change, when you have figured it out.

@Ernst79 Thanks… Since I posted this, the latest version of HA seems to have added out-of-the-box detection and support for it… So I am no longer using this component for it.

It might be worth looking at their code to see how they parse battery and temp info?

Ah, ok. Its better to use the core HA integration anyways. But I'll check the code.

Hi, I tried updating to beta 12.4.0 but the device doesn't show up. I tried adding manually but didn't work too. I can see the packets picked up in the ESPHome. I have turned on Active scan as well. Thank you.

@dsaul560 I need some debug logging to figure out what is wrong. Please follow these instructions to provide me with the necessary info.

https://custom-components.github.io/ble_monitor/sensor_request#getting-ble-advertisements-with-the-home-assistant-logger