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Govee Temperature/Humidity BLE Home Assistant Component

NOTICE Jul, 15,2021:
Govee support has been added to Passive BLE Monitor integration as of version 4.1.0.

For any new users I would strongly suggest using that integration. BLE Monitor has better support Bluetooth support (including Intel NUC), more sensors and sensor discovery so there is no longer a need to list MAC addresses.

Existing users: I will continue to support this component for the foreseeable future but new development will likely only occur for Passive BLE Monitor integration. Sadly, you will not be able to use both components at the same time.

Thank you @Ernst79 for adding the Govee devices. Ultimately, it makes more sense for you, the end users, to have one component that does everything well and to pool development resources to ensure issues can be resolved quickly.

Govee Temperature/Humidity BLE Home Assistant Component

A custom component for Home Assistant that listens for the advertisement message broadcast by Govee Bluetooth Thermometer/Hygrometers.

hacs_badge hassfest_badge

Supported Devices

Installation

1. Install the custom component:

  • The easiest way is to install it with HACS. First install HACS if you don't have it yet. After installation, the custom component can be found in the HACS store under integrations.

  • Alternatively, you can install it manually. Just copy paste the content of the sensor.goveetemp_bt_hci/custom_components folder in your config/custom_components directory. As example, you will get the sensor.py file in the following path: /config/custom_components/govee_ble_hci/sensor.py.

NOTE: the following instructions about setting device permissions are an edge case for a very specific set up. (If you do not understand it, do not worry about).

  • If running Home Assistant without root access the Bleson Python library used for accessing bluetooth requires the following permissions applied to the Python 3 binary. If using a virtual environment for HA, this binary will be in the virtual environment path.

    NOTE: Replace "path" with the path to the Python3 binary (example: /srv/homeassistant/bin/python3)

    sudo setcap cap_net_raw,cap_net_admin+eip $(eval readlink -f path)
    

2. Stop and start Home Assistant:

  • Stop and start Home Assistant. Make sure you first stop Home Assistant and then start Home Assistant again. Do this before step 5, as Home Assistant will otherwise complain that your configuration is not valid (as it still uses the build in govee_ble_hci integration), and won't restart when hitting restart in the server management menu.

3. Add the platform to your configuration.yaml file (see below)

4. Restart Home Assistant:

  • A second restart may be required to load the configuration. Within a few minutes, the sensors should be added to your home-assistant automatically (at least two period may be required. If the period is set to a time greater than two minutes, at least four period may be required).

5. If the entities are still not displaying data, a restart of the host device may be required.

Troubleshooting and help

Any questions or support should be asked on this component's Home Assistant community post.

Configuration Variables

Specify the sensor platform govee_ble_hci and a list of devices with unique MAC address.

NOTE: device name is optional. If not provided, devices will be labeled using the MAC address

sensor:
  - platform: govee_ble_hci
    govee_devices:
      - mac: "A4:C1:38:A1:A2:A3"
        name: Bedroom
      - mac: "A4:C1:38:B1:B2:B3"
      - mac: "A4:C1:38:C1:C2:C3"
        name: Kitchen
Additional component configuration options
Option Type Default Value Description
rounding Boolean True Enable/disable rounding of the average of all measurements taken within the number seconds specified with 'period'.
decimals positive integer 2 Number of decimal places to round if rounding is enabled. NOTE: the raw Celsius is rounded and setting decimals: 0 will still result in decimal values returned for Fahrenheit as well as temperatures being off by up to 1 degree F.
period positive integer 60 The period in seconds during which the sensor readings are collected and transmitted to Home Assistant after averaging. The Govee devices broadcast roughly once per second so this limits amount of mostly duplicate data stored in Home Assistant's database.
log_spikes Boolean False Puts information about each erroneous spike in the Home Assistant log.
use_median Boolean False Use median as sensor output instead of mean (helps with "spiky" sensors). Please note that both the median and the mean values in any case are present as the sensor state attributes.
hci_device string hci0 HCI device name used for scanning.
temp_range_min_celsius float -20.0 Set the lower bound of reasonable measurements, in Celsius. Temperature measurements lower than this will be discarded. Warning: temperatures returned by the Govee device that are outside of the specified range may not be accurate. It is not advised to change this value.
temp_range_max_celsius float 60.0 Set the upper bound of reasonable measurements, in Celsius. Temperature measurements higher than this will be discarded. Warning: temperatures returned by the Govee device that are outside of the specified range may not be accurate. It is not advised to change this value.

Example with all defaults:

sensor:
  - platform: govee_ble_hci
    rounding: True
    decimals: 2
    period: 60
    log_spikes: False
    hci_device: hci0
    govee_devices:
      - mac: "A4:C1:38:A1:A2:A3"
        name: Bedroom
      - mac: "A4:C1:38:B1:B2:B3"
      - mac: "A4:C1:38:C1:C2:C3"
        name: Kitchen

Credits

This was originally based on/shamelessly copied from custom-components/sensor.mitemp_bt. I want to thank @tsymbaliuk and @Magalex for providing a blueprint for developing my Home Assistant component.