Linak desk controller

ESPHome
26

Thanks @j5lien for writing this integration. I did a few issues like other trying to get ESPHome to talk to the Linak controller but after a few hours (days). I was able to get the integration working perfectly with Home Assistant.

My Steps:

I know some people have had issues with different versions of ESP32, I purchased mine off Amazon (https://www.amazon.com.au/gp/product/B097DCN76N/) and seems to work perfectly.

I had lots of issues with paring the desk using “esp32_ble_tracker” component. So, I switched to the older version which uses the BLE Arduino library. I found the mac address of the desk using an android application “BLE Scanner” and paired the desk to the ESP32. Once the pairing process was complete and I could control the desk. I switched to the latest version that uses esp32_ble_tracker and the connection has been rock steady.

Code for paring:

esphome:
  name: sam-idasen
  platform: ESP32
  board: esp32dev
  libraries:
    - "ESP32 BLE Arduino"
# Enable logging
logger:

wifi:
  ssid: !secret IoT_ssid
  password: !secret IoT_password

  # Enable fallback hotspot (for captive portal) in case wifi connection fails
  ap:
    ssid: "ESPHome $friendly_name"
    password: !secret ap_password

api:
  password: !secret api_ota_Password

ota:
  password: !secret api_ota_Password
  

external_components:
  - source: github://j5lien/[email protected]

idasen_desk_controller:
  mac_address: "00:00:00:00:00:00"

sensor:
  - platform: idasen_desk_controller
    desk_height:
      name: "Desk Height"

binary_sensor:
  - platform: idasen_desk_controller
    name: "Desk Connection"
    type: CONNECTION
  - platform: idasen_desk_controller
    name: "Desk Moving"
    type: MOVING

cover:
  - platform: idasen_desk_controller
    name: "Desk"

Once paring is complete and the desk responds to ESP Home/Home Assistant, update the code to the latest version:

esphome:
  name: sam-idasen
  platform: ESP32
  board: esp32dev

substitutions:
  friendly_name: Sam Idasen Desk

# Enable logging
logger:

# Enable Home Assistant API
wifi:
  ssid: !secret IoT_ssid
  password: !secret IoT_password

  # Enable fallback hotspot (for captive portal) in case wifi connection fails
  ap:
    ssid: "ESPHome $friendly_name"
    password: !secret ap_password

api:
  password: !secret api_ota_Password

ota:
  password: !secret api_ota_Password
    
external_components:
  - source: github://j5lien/[email protected]

esp32_ble_tracker:

globals:
  # To store the Desk Connection Status
  - id: ble_client_connected
    type: bool
    initial_value: 'false'

ble_client:
  - mac_address: "00:00:00:00:00:00"
    id: idasen_desk
    on_connect:
      then:
        # Update the Desk Connection Status
        - lambda: |-
            id(ble_client_connected) = true;
        - delay: 5s
        # Update desk height and speed sensors after bluetooth is connected
        - lambda: |-
            id(desk_height).update();
            id(desk_speed).update();
    on_disconnect:
      then:
        # Update the Desk Connection Status
        - lambda: |-
            id(ble_client_connected) = false;

idasen_desk_controller:
  ble_client_id: idasen_desk
  only_up_down_command: false

cover:
  - platform: idasen_desk_controller
    name: "Sam Desk"

sensor:
  # Desk Height Sensor
  - platform: ble_client
    ble_client_id: idasen_desk
    id: desk_height
    name: 'Sam Desk Height'
    service_uuid: '99fa0020-338a-1024-8a49-009c0215f78a'
    characteristic_uuid: '99fa0021-338a-1024-8a49-009c0215f78a'
    icon: 'mdi:arrow-up-down'
    unit_of_measurement: 'cm'
    accuracy_decimals: 1
    update_interval: never
    notify: true
    filters:
    - offset: 0.33
    lambda: |-
      uint16_t raw_height = ((uint16_t)x[1] << 8) | x[0];
      unsigned short height_mm = raw_height / 10;

      return (float) height_mm / 10;

  # Desk Speed Sensor
  - platform: ble_client
    ble_client_id: idasen_desk
    id: desk_speed
    name: 'Sam Desk Speed'
    service_uuid: '99fa0020-338a-1024-8a49-009c0215f78a'
    characteristic_uuid: '99fa0021-338a-1024-8a49-009c0215f78a'
    icon: 'mdi:speedometer'
    unit_of_measurement: 'cm/min' # I'm not sure this unit is correct
    accuracy_decimals: 0
    update_interval: never
    notify: true
    lambda: |-
      uint16_t raw_speed = ((uint16_t)x[3] << 8) | x[2];
      return raw_speed / 100;

binary_sensor:
  # Desk Bluetooth Connection Status
  - platform: template
    name: 'Sam Desk Connection'
    id: desk_connection
    lambda: 'return id(ble_client_connected);'

  # Desk Moving Status
  - platform: template
    name: 'Sam Desk Moving'
    id: desk_moving
    lambda: 'return id(desk_speed).state > 0;'
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