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Lanbon L9 Smart Switch Panel

Lanbon L9 Smart Switch Panel

Device Type: misc
Electrical Standard: us
Board: esp32
Difficulty: Plug-n-flash, 2/5

Product Image

Drivers

  • Processor: ESP32-S3-Wroom-1U
  • Touchscreen: 6336
  • Display: ST7789V2 (using ili9xxxx plaform)

GPIO Pinout

i80 (used for display)

PinFunction
GPIO13WR
GPIO18RD
GPIO6data[0]
GPIO7data[1]
GPIO15data[2]
GPIO16data[3]
GPIO10data[4]
GPIO9data[5]
GPIO46data[6]
GPIO3data[7]
GPIO21cs
GPIO17dc
GPIO4reset

I²C (used for touchscreen)

PinFunction
GPI035i2c SDA
GPIO0i2c SCL

Backlight

PinFunction
GPI42backlight

Relay

PinFunction
GPIO36relay

How To Flash

See BlackAdder's instruction on how to flash custom firmware for the L8, referring to the following diagram for the L9 connector pinout. No soldering required. IMPORTANT: Both 5v and 3.3v must be supplied.

Pinout Diagram

Example Configuration

psram:
  speed: 80MHz


output:
  - platform: ledc
    pin: GPIO42
    id: backlight_pwm
  - platform: gpio
    pin: GPIO36
    id: relay


light:
  - platform: monochromatic
    name: "Backlight"
    id: backlight
    output: backlight_pwm
    restore_mode: ALWAYS_ON
  - platform: binary
    id: local_light
    name: "Light"
    output: relay


power_supply:
  - id: 'i80_rd_pin'
    pin:
      number: 18
      inverted: true


spi:
  type: octal
  clk_pin: GPIO13  # WR pin
  data_pins:
    - GPIO6
    - GPIO7
    - GPIO15
    - GPIO16
    - GPIO10
    - GPIO9
    - ignore_strapping_warning: true
      number: GPIO46
    - ignore_strapping_warning: true
      number: GPIO3


i2c:
  sda: GPIO35
  scl:
    ignore_strapping_warning: true
    number: GPIO0


display:
  - id: langbon_L9
    platform: mipi_spi
    model: CUSTOM
    invert_colors: true
    dimensions:
      height: 320
      width: 170
      offset_width: 35
    bus_mode: octal
    dc_pin: GPIO17
    cs_pin: GPIO21
    reset_pin: GPIO4
    auto_clear_enabled: false
    update_interval: never
    rotation: 0


touchscreen:
  platform: ft63x6
  calibration:
    x_min: 0
    y_min: 3
    x_max: 169
    y_max: 319
  on_release:
    - if:
        condition: lvgl.is_paused
        then:
          - lvgl.resume:
          - lvgl.widget.redraw:
          - light.turn_on: backlight


lvgl:
  on_idle:
    timeout: !lambda "return 10000;"
    then:
      - light.turn_off: backlight
      - lvgl.pause:
  pages:
     ...
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