XIAOMI lywsdcgq Temperature Humidity Calibration

ESPHome
1

Hello!

I see that there are no buttons to increase/decrease the values or readings of temperature and humidity. But there are several ways I know how to calibrate the humidity – salt and boveda.

Is there a way to +/- values to whatever the current reading on the LCD screen?

Say if my sensor reading is 77%, if my calibration shows that the sensor is 2% high, how do I subtract 2% to the value shown in HA?

Any help is appreciated!

2

Although given it measure relative humidity, absolute values are a little illusory.

3

If you want to adjust the reading that HASS uses, you can also use a custom sensor. Here’s one of my mqtt sensors where I’m adjusting the humidity reading by -1%.

  - platform: mqtt
    name: Acurite Basement Humidity
    state_topic: "/share/rtl433/Acurite-Tower/3084"
    availability_topic: "zigbee2mqtt/bridge/state"
    unit_of_measurement: "%"
    device_class: "humidity"
    value_template: "{{ value_json.humidity | float - 1 }}"
4

Wow, that’s a lot to digest, I just need to add 1 or 2 to whatever current value my sensor is.

5

Thanks for the tip. Anyway you can get this to work for this component?

6

I use this method in Esphome :

sensor:
  - platform: dht
    pin: GPIO2
    model: DHT11
    temperature:
      name: "ESP CAM Temperature"
      filters:
        - offset: -2.0
      unit_of_measurement: "°C"
    humidity:
      name: "ESP CAM Humidity"
    update_interval: 60s
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