How to use weather-node with Home assistant and ESPHome

[KinDR007]

Hi ,
its possible use node with Home assistant and ESPHome (esp32) ?

how to get data for use in home assistant?

[AlexIII]

Hi!
There's a line [ble_adv:053] 0x53A9: (length 6) in the log on your picture. That's where's the data is stored. You need a way to read and manually convert those 6 bytes to temperature (fist 2 bytes), humidity (2 bytes) and status (1 byte) according to this tabe. You can use 0x53A9 to distinguish this device from any other.

[KinDR007]

hi , thx for quick reaction

here its my code for ESPHome

 on_ble_manufacturer_data_advertise:
    - mac_address: DE:AD:BE:EF:00:01
      manufacturer_id: 53A9
      then:
        - lambda: |-
            id(humidity).publish_state((x[0] << 8) + x[1]);
            id(temp).publish_state(((x[2] << 8) + x[3]) / 10.0);
            id(battble).publish_state(((x[4] << 8) ) );    


sensor:
  - platform: template
    name: "BLE Sensor temp"
    id: temp
    unit_of_measurement: "C"
    accuracy_decimals: 1

  - platform: template
    name: "BLE Sensor humidity"
    id: humidity
    unit_of_measurement: "%"
    accuracy_decimals: 0
    
  - platform: template
    id: battble  
    
  - platform: template
    name: "BLE Sensor bat"
    id: batt    
    unit_of_measurement: "%"
    accuracy_decimals: 0
    lambda: |-
      int batperc;
      const int battlvl = id(battble).state;
      if (battlvl == 0)
      {
          batperc = 100;
      }
      else if (battlvl == 1)
      {
          batperc = 75;
      }
      else if (battlvl == 2)
      {
          batperc = 50;
      }
      else if (battlvl == 3)
      {
          batperc = 25;
      }
      return batperc;

I still have a question, what happens when the temperature value is negative?

[AlexIII]

Seems good to me. To support negative temperature you can do something like this

id(temp).publish_state( (x[2] & 0x80? -1 : 1) * (((x[2] & 0x7F) << 8) + x[3]) / 10.0);

The sign is the higher bit of x[2].
I also suggest you add 2-bit mask to read battery level

const int battlvl = id(battble).state & 0x03;

Do you mind telling what version you're using, nRF24LE1-based or Arduino-based?

[KinDR007]

Hi ,
I use Arduino pro mini board (mod. to 1.8volt@1Mhz) and nrf24l01
Old Mysensors node with HTU21D