DIS05035H (Elecrow CrowPanel 3.5") Config

ESPHome
1

Just wanted to share a basic working config for this device (DIS05035H) :slight_smile:

Heads-up: I try to keep the configs in these posts updated but sometimes the configs in my repo are more up-to-date!

Here are the device-specific bits of the config separated out from everything else:

esp32:
  board: odroid_esp32
  framework:
    type: arduino

i2c:
  sda: 22
  scl: 21

spi:
  id: tft
  clk_pin: 14
  mosi_pin: 13
  miso_pin: 33 #12 on v2.0
  interface: hardware

output:
  - id: gpio_backlight_pwm
    platform: ledc
    pin: 27
    inverted: False

light:
  - id: backlight
    name: Backlight
    platform: monochromatic
    output: gpio_backlight_pwm
    restore_mode: ALWAYS_ON

display:
  - platform: ili9xxx
    model: ILI9488_A
    dimensions:
      height: 480
      width: 320
    transform:
      mirror_x: true
    spi_id: tft
    cs_pin:
      number: 15
      ignore_strapping_warning: true
    dc_pin:
      number: 2
      ignore_strapping_warning: true
    invert_colors: false
    data_rate: 20MHz
    update_interval: never
    auto_clear_enabled: false

touchscreen:
  platform: xpt2046
  cs_pin:
    number: 12 #33 on v2.0
    ignore_strapping_warning: true
  interrupt_pin: 36
  update_interval: 50ms
  threshold: 400
  calibration:
    x_min: 280
    x_max: 3860
    y_min: 3860
    y_max: 340

lvgl:
  buffer_size: 25%

I like to keep device-specific code like that its own file separate from everything else so that I can use the Packages component to import it into multiple relevant projects, rather than duplicate the whole thing into each one. In my case I save it into a file called templates/DIS05035H.yaml.

In the spirit of not duplicating code into multiple projects, I create another file that is not device-specific but is common/repetitive among all my projects. In my case I chose to call it templates/common.yaml and it has code like so:

esphome:
  name: "${device_name}"
  friendly_name: "${friendly_name}"

logger:
  level: INFO

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

web_server:
  port: 80

ota:
  - platform: esphome

api:

Finally, this is how I use both of the above files together in a project.:

substitutions:
  device_name: crowpanel-3.5-test-device
  friendly_name: CrowPanel 3.5 Test Device

packages:
  common: !include templates/common.yaml
  device: !include templates/DIS05035H.yaml
  # dashboard: !include templates/dashboard_480x320.yaml

#sensor: ...

Note: The contents of the dashboard package referenced above aren’t in this post but I have it in the example to illustrate the power of setting up a config this way. In my case templates/dashboard_480x320.yaml is a file that I’ve created with HA sensors and LVGL pages in it, and it can be reused on any of my devices that support the same resolution as this one.

If someone wants to help get this device listed on devices.esphome.io then be my guest! I was too lazy to dig into that but hopefully posting here is just as helpful.

Concerns / Potential Improvements

  • This config is for hardware version 2.2 but there’s also a 2.0 which has 2 pins swapped.
  • Rotating the screen is a bit painful. This config rotates it 90 degrees (portrait with USB connector at the bottom). For other rotations you need to play with both the display transform settings as well as the touchscreen calibration settings.

More in my GitHub repo