With the ulanzi-hardware and esphome 2024.2.0 you have to remove all the rtttl stuff to make things work!!!
The hardware design of the ulanzi isn't perfect. If your ulanzi makes a crazy beeping noise after removinf the rtttl-component you may use this setting to make it silent again.
output:
- platform: gpio
pin:
number: GPIO15
ignore_strapping_warning: true
id: buzzer_pin
Some updates of esphome will interfere with EspHoMaTriXv2, like the update of esphome to 2023.7.0. It made a change to all YAML files necessary.
You have to add this to your YAML
image:
- file: 1pixel.gif
id: breaking20237
animation:
- file: 1pixel.gif
id: breaking202371You have also to copy the file 1pixel.gif from the copy2esphome folder to the directory with your yaml.
Also there might be breaking changes due to a redesign of EspHoMaTriXv2.
If you like this project, please donate a star on GitHub and consider sponsoring me!
An easy to setup and extensible DIY LED Matrix status display built with a 8x32 RGB LED panel, (Example: ULANZI TC001) all implemented with esphome.io
If you like to customize and tinker you can use this custom component as a satellite voice control microphone for home assistant. Youtube
For additional tips and tricks be sure to check out the WIKI
There are some “RGB-matrices” status displays/clocks out there, the commercial ones from LaMetric and Ulanzi, and also some excellent DIY alternatives.
- LaMetric commercial ~ €199
- Ulanzi TC001 commercial ~ €50
- AWTRIX (project has been discontinued after more than 4 years in August 2022)
- Pixel It (the project is under active development)
- AWTRIX-Light From the developer of AWTRIX, optimized for the Ulanzi TC001 hardware
All of the various solutions have their pros and cons. I tried some and used AWTRIX for a long time, but I found it lacking in a lot of ways (in my opinion,) so I started work on an esphome.io variant. Targeted for an optimized and extensible Home Assistant integration without paid blueprints, MQTT broker requirement, or the need to upload files to the ESP board.
Based on a 8x32 RGB matrix, it displays a clock, the date and up to 24 other 'screens' provided by Home Assistant. Each screen (value/text) can be associated with a 8x8 bit RGB icon or GIF animation (see installation). The values/text can be updated or deleted from the display queue. Each screen has a lifetime, if not refreshed in its lifetime, it will disappear. Even 8x32 GIF animations are possible. You can control nearly everything of the component.
After the v1 component became popular and received additional feature requests it became clear that yhe v1 v1code was a bit of a mess. I reworked all of the code and restructured it to hopefully be much more extensible. This software is still heavily in development, before updating please check the Breaking Changes
It is highly recommended to use an ESP32 device. There are conditions where the RAM size is too limited in a ESP8266 device so some of the features had to be removed for these boards (Example: bitmap_screen).
There is a little hype around the Ulanzi TC001 pixel clock. The easy way works with the Ulanzi TC001 hardware. For more customization and other hardware, look here.
In easy mode you'll have a clock with auto brightness control and after step 3 you can send states to the display and toggle on or off additional screen elements.
Copy these files from the source folder copy2esphome:
ulanzi-simple.yaml- Optional:
1pixel.gifSee: Attention
to your esphome directory (usually /config/esphome).
Grab the font files, that are used in ulanzi-simple.yaml from https://github.com/trip5/Matrix-Fonts and save them in /config/esphome/fonts.
In your esphome dashboard, you will find a new device named ulanzi-easy.
Connect your Ulanzi device to your host with USB-C and flash the firmware.
Copy the blueprints EHMTX_easy_*.yaml to your blueprint path (usually /config/blueprints/automation/) in a subfolder named ehmtxv2.
Reload your automations and have fun after configuring some automations with this blueprint.
The device should boot
and after a while (~30 seconds) it should display the correct time.
.
If not, check the esphome logs for further investigations.
This is for the more advanced users. If you understand the concept of esphome, you can display nearly everything with this component. You can also create your own customized esphome based display with multiple sensors, or even use it as a microphone for the new voice assist feature from home assistant.
You can add screens to a queue and all these screens are displayed one after another.
Each screen can display different information or animation or text, even in rainbow color. They all have a lifetime, if a screen isn't refreshed during its lifetime it will be removed from the queue. If there is nothing left in the queue, the date and time screens are displayed. Some screens can show additional features like an alarm or rindicator see elements.
You can add screens from home assistant with service-calls or from esphome via lambdas in your YAML.
You can call this from, e.g., the developer tools service
clock_screen => {"lifetime", "screen_time", "default_font", "r", "g", "b"}
rainbow_clock_screen => {"lifetime", "screen_time", "default_font"}
date_screen => {"lifetime", "screen_time", "default_font", "r", "g", "b"}
rainbow_date_screen => {"lifetime", "screen_time", "default_font"}The rainbow_* variants don't display the day of week bar.
You can use these in lambdas in your esphome YAML.
all parameters have a default value.
void clock_screen(int lifetime=D_LIFETIME, int screen_time=D_SCREEN_TIME,bool default_font=true,int r=C_RED, int g=C_GREEN, int b=C_BLUE);
void rainbow_clock_screen(int lifetime=D_LIFETIME, int screen_time=D_SCREEN_TIME, bool default_font=true);
void date_screen(int lifetime=D_LIFETIME, int screen_time=D_SCREEN_TIME,bool default_font=true, int r=C_RED, int g=C_GREEN, int b=C_BLUE); 
icon_screen => {"icon_name", "text", "lifetime", "screen_time", "default_font", "r", "g", "b"}
rainbow_icon_screen => {"icon_name", "text", "lifetime", "screen_time", "default_font"}void icon_screen(std::string icon, std::string text, int lifetime=D_LIFETIME, int screen_time=D_SCREEN_TIME,bool default_font=true,int r=C_RED, int g=C_GREEN, int b=C_BLUE);
void rainbow_icon_screen(std::string icon, std::string text, int lifetime=D_LIFETIME, int screen_time=D_SCREEN_TIME,bool default_font=true);For 8x32 icons or animations
full_screen => {"icon_name", "lifetime", "screen_time"}void full_screen(string iconname, int =D_LIFETIME, int screen_time=D_SCREEN_TIME);This feature is only available on ESP32 platform!!!!!
For 8x32 images as text. You can generate these images with, e.g., Pixel Bitmap Creator (8x32)
bitmap_screen => {"[0,4523,0,2342,0,..... (256 values 16bit values rgb565)]", "lifetime", "screen_time"}void bitmap_screen(string text, int =D_LIFETIME, int screen_time=D_SCREEN_TIME);
The alarm is displayed in the upper-right corner on all screen types! You can set its color and its size.
show_alarm => { "r", "g", "b","size"}void EHMTX::show_alarm(int r, int g, int b, int size=2);r, g, b: 0-255 color components size: 0-3 (zero turns it off)
To remove it, call:
hide_alarm => no parametervoid hide_alarm();The rindicator is in the lower-left corner, but not displayed in full screen 8x32 animations. You can set its color.
show_rindicator => { "r", "g", "b","size"}void show_rindicator(int r, int g, int ,int size=3);r, g, b: 0-255 color components size: 0-3 (zero turns it off)
To remove it, call:
hide_rindicator => no parametervoid hide_rindicator();Same as above but in the lower-left corner, this is not visible while icons are displayed.
The gauge is displayed in the leftmost column. You can set its color and its value from 0-100, the resolution is limited to 8 pixels, so it is not a precision gauge.
show_gauge => {"value","r", "g", "b","bg_r", "bg_g", "bg_b"}void show_gauge(int percent, int r, int g, int b, int bg_r, int bg_g, int bg_b);percent: 0-100 (resolution: one pixel per 12.5%) r, g, b: 0-255 foreground color components bg_r, bg_g, bg_b: 0-255 background color components
To remove it, call:
hide_gauge => no parametervoid hide_gauge();EspHoMaTriXv2 is a custom component, you have to include it in your YAML configuration. To always use the newest features, you should use the repo, to use a stable version, you copy a working version to your esphome installation.
If you download the components-folder from the repo and install it in your esphome you have a stable installation. But if there are new features, you won't see them. If needed, customize the YAML to your folder structure.
external_components:
- source:
type: local
path: components # e.g. /config/esphome/componentsUse the GitHub repo as a component. Esphome refreshes the external components “only” once a day, perhaps you have to refresh it manually. In this mode, there may be breaking changes, so read the changelog and check the logs while installing the firmware.
external_components:
- source:
type: git
url: https://github.com/lubeda/EspHoMaTriXv2
ref: stable # optional select a special branch or tagThe EspHoMaTriXv2 component requires a 8x32 pixel addressable_light, it is referenced by the ID matrix_component.
See the default options
There are some different matrices-types on the market, to adapt them to EspHoMaTriXv2 you have to find the proper pixel mapper. If there is garbage on your display, try the other pixel_mapper. Here are the most common types for flexible 8x32 matrices:
Common for 8x32 RGB flexible matrices.
Under the display tag, specify this pixel mapper:
display:
- platform: addressable_light
.....
pixel_mapper: |-
if (x % 2 == 0) {
return (x * 8) + y;
}
return (x * 8) + (7 - y);
.....Under the display tag, specify this pixel mapper:
display:
- platform: addressable_light
.....
pixel_mapper: |-
if (y % 2 == 0) {
return (y * 32) + x;
}
return (y * 32) + (31 - x);
.....display:
- platform: addressable_light
.....
pixel_mapper: |-
return ((int) (x/8 * 64)) + x % 8 + y * 8;
.....You have to configure this lambda under the display: section to use the EspHoMaTriXv2 component
display:
- platform: addressable_light
id: ehmtx_display
.....
auto_clear_enabled: true
lambda: |-
id(rgb8x32)->tick();
id(rgb8x32)->draw();The light component is used by the addressable_light component and referenced by ID under addressable_light_id:.
To use the light component directly from home assistant, add the sample lambdason_turn_on and on_turn_off to the light component.
Sample
light:
- platform: neopixelbus
id: ehmtx_light
....
on_turn_on:
lambda: |-
id(ehmtx_display)->set_enabled(false);
on_turn_off:
lambda: |-
id(ehmtx_display)->set_enabled(true);To hide the light component in home assistant use: internal: true
light:
- platform: neopixelbus
id: ehmtx_light
internal: true
...Since it is a clock, you need a time component, e.g., home assistant. It is referenced by its ID under time_component: The display shows !t! until the time source is synchronized and valid.
In the easy configuration is a TTF-font included, it is based on this font. Or you can search for a font you like more.
Not all fonts are suitable for this minimalistic display. There are public domain fonts which work well on the display, e.g., DMDSmall, details on alternative fonts are here.
You can configure two fonts if you like.
Trip5 is also providing special fonts for 8x32 matrices in his repo
dbuezas has also contributed tow optimized fonts with umlauts for this kind of display mateine.ttf and mateineThin.ttf. They are included in the copy2esphome folder
font:
- file: mateine.ttf
id: default_font
size: 16
glyphs: |
!"%()+*=,-_.:°0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz€@Download and install all needed icons (.jpg/.png) and animations (.GIF) under the ehmtxv2: key. All icons have to be 8x8 or 8x32 pixels in size. If necessary, scale them with gimp, check “as animation” for GIFs.
You can also specify a URL to directly download the image file. The URLs will only be downloaded once at compile time, so there is no additional traffic on the hosting website.
The icons and animations from the AWTRIX and AWTRIX-light could be used, but have to be scaled down to 8x32 or 8x8 pixels. Check the license before using them!
There are maximum 90 icons possible.
Sample
emhtx:
icons:
- id: boot
file: icons/rocket.GIF
duration: 75
- id: temp
file: temperature.png
- id: yoga
file: icons/yoga-bridge.GIF
pingpong: true
- id: jackshome
url: https://awtrix.blueforcer.de/animations/JackHomePage
resize: 32x8
- id: garage
lameid: 1234
duration: 100
- id: homeassistant
url: https://github.com/home-assistant/assets/raw/master/logo/logo-special.png The ID of the icons is used later to configure the screens to display. So, you should name them wisely. If you like to group icons, you should prefix them, e.g., with “weather_” (see Service del_screen)
The first defined icon will be used as a fallback icon, in case of an error, e.g., if you use a non-existing icon ID.
GIFs are limited to 110 frames to limit the used amount of flash space.
All other solutions provide ready-made icons, especially Lametric has a big database of icons. Please check the copyright of the icons you use. The maximum number of icons is limited to 90 in the code and also by the flash space and the RAM of your board.
See also icon parameter
This component is highly customizable.
Example
ehmtxv2:
id: rgb8x32
show_seconds: true
matrix_component: ehmtx_display
time_component: ehmtx_time
icons2html: true
default_font_id: default_font
default_font_yoffset: 6
special_font_id: special_font
special_font_yoffset: 7
brightness: 80 # percent
time_format: "%H:%M"
date_format: "%d.%m."
rtl: false # write vom left to right
week_start_monday: true # false equals sunday
scroll_count: 2 # scroll long text at least two times
scroll_interval: 80 # milliseconds
rainbow_interval: 32 # milliseconds
icons:
.....Parameters
id (required, ID): Manually specify the ID used for code generation and in service definitions.
date_format (optional, string): formats the date display with strftime syntax, defaults "%d.%m." (use "%m.%d." for the US)
show_seconds (optional, boolean): toggle/blink an indicator-pixel each seconds while the clock is displayed (default: false)
time_format (optional, string): formats the date display with strftime syntax, defaults "%H:%M" (use "%I:%M%p" for the US)
default_font_yoffset (optional, pixel): yoffset the text is aligned BASELINE_LEFT, the baseline defaults to 6
default_font_xoffset (optional, pixel): xoffset the text is aligned BASELINE_LEFT, the left defaults to 1
special_font_yoffset (optional, pixel): yoffset the text is aligned BASELINE_LEFT, the baseline defaults to 6
special_font_xoffset (optional, pixel): xoffset the text is aligned BASELINE_LEFT, the left defaults to 1
scroll_small_text (optional, bool): normally small text is centered on the display if possible, with this set to true even small text is scrolled in text_screen and rainbow_text_screen (default: false)
allow_empty_screen (optional, bool): When the queue for messages to be displayed is empty and the time screen has been removed, the time screen is normally reactivated. This option can be used to disable this behavior by setting allow_empty_screen to true. (default: false)
rtl (optional, boolean): if true write text (but only the scroll direction, the words and numbers aren't changed!) from right to left (Arabic, Hebrew etc.). Default is false
matrix_component (required, ID): ID of the addressable display
show_date (optional, bool): show the date in the loop (rainbow and normal), defaults to true.
show_dow (optional, bool): draw the day of week rindicator on the bottom of the clock screen. Disable, e.g., if you want larger fonts, defaults to true.
blend_steps (optional, int): on screen transition you can blend in the new screen, a value of 16 works nice, defaults 0.
time_component (required, ID): ID of the time component. The display shows !t! until the time source is valid.
default_font (required, ID): ID of the default font
special_font (required, ID): ID of the special font, you can reuse your default font, but occasionally, it's nice to have a special font to minimize scrolling
week_start_monday (optional, bool): default Monday is first day of week, false => Sunday
default_clock_font (optional, boolean): If true, use the default font for clock and date otherwise use the special font. (default = true)
scroll_interval (optional, ms): the interval in ms to scroll the text (default=80), should be a multiple of the update_interval of the display
clock_interval (optional, s): the interval in seconds to force the clock display. By default, the clock screen, if any, will be displayed according to the position in the queue. If you set the clock_interval close to the screen_time of the clock, you will only see the clock! (default=0)
boot_logo (optional, string , only on ESP32): Display a fullscreen logo defined as rgb565 array.
boot_logo: "[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,63519,63519,63519,63519,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,63519,0,0,0,0,2016,0,0,0,0,0,0,0,0,0,0,31,0,0,0,0,0,0,0,0,0,63488,0,63488,0,0,0,63519,0,0,0,0,2016,2016,0,0,0,65514,0,65514,0,0,0,31,0,0,0,64512,0,0,64512,0,63488,63488,0,63488,63488,0,0,63519,63519,63519,0,0,2016,0,2016,0,65514,0,65514,0,65514,0,31,31,31,0,0,0,64512,64512,0,0,63488,63488,63488,63488,63488,0,0,63519,0,0,0,0,2016,0,2016,0,65514,0,65514,0,65514,0,0,31,0,0,0,0,64512,64512,0,0,0,63488,63488,63488,0,0,0,63519,63519,63519,63519,0,2016,0,2016,0,65514,0,65514,0,65514,0,0,0,31,31,0,64512,0,0,64512,0,0,0,63488,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]" If defined you can use the services display_boot_logo and display_version to display the defined logo or the version of ehmtx.
icons2html (optional, boolean): If true, generate the HTML-file (filename.html) to show all included icons. (default = false)
always_show_rl_indicators (optional, boolean): If true, always show the r/l indicators on all screens. Default is to not show either on clock, date, full, and bitmap screens, left on icon, or if display gauge displayed. (default = false)
Example output:
Parameters See icon details
-
frame_duration (optional, ms): in the case of a GIF-file, the component tries to read the default interval for each frame. The default/fallback interval is 192 ms. In case you need to override the default value, set the duration per icon.
-
pingpong (optional, boolean): in the case of a GIF-file, you can reverse the frames instead of starting from the first frame.
-
file (Exclusive, filename): a local filename
-
url (Exclusive, url): a URL to download the icon
-
lameid (Exclusive, number): the ID from the LaMetric icon database
-
resize (Optional, "8x8" or "32x8"): If the source file hasn't the right dimensions.
Example
- id: jackshome
url: https://awtrix.blueforcer.de/animations/JackHomePage
resize: 32x8Numerous features are accessible with services from home assistant and lambdas that you can use in your YAML.
| service | parameter | result |
|---|---|---|
get_status |
none | write some status information to the esphome logs |
display_on |
none | turn display off |
display_off |
none | turn display on |
hold_screen |
none | show the screen that is currently displayed for the number of seconds longer |
hide_rindicator |
none | hides the rindicator |
hide_gauge |
none | hides the gauge |
hide_alarm |
none | hides the alarm |
show_gauge" |
"percent", "r", "g", "b" | set the height of the gauge according to the percentage in the given color |
show_alarm |
"r", "g", "b", "size" | shows the color with the given size in the upper-right corner |
show_rindicator |
"r", "g", "b", "size" | shows the color with the given size in the lower-right corner |
set_today_color |
"r", "g", "b" | set the special color for today in the day of week line |
set_weekday_color |
"r", "g", "b" | set the default color in the day of week line |
set_clock_color |
"r", "g", "b" | set the default color of clock and date display |
del_screen |
"icon_name", “mode” | deletes the specified icon screen from the queue, the mode is a filter |
force_screen |
"icon_name", “mode” | displays the selected the specified icon screen from the queue, the mode is a filter |
full_screen |
"icon_name", "lifetime", "screen_time" | show the specified 8x32 icon as full screen |
icon_screen |
"icon_name", "text", "lifetime", "screen_time", "default_font", "r", "g", "b" | show the specified icon with text |
rainbow_icon_screen |
"icon_name", "text", "lifetime", "screen_time", "default_font" | show the specified icon with text in rainbow color |
text_screen |
"text", "lifetime", "screen_time", "default_font", "r", "g", "b" | show the specified text |
rainbow_text_screen |
"text", "lifetime", "screen_time", "default_font" | show the specified text in rainbow colors |
clock_screen |
"lifetime", "screen_time", "default_font", "r", "g", "b" | show the clock |
rainbow_clock_screen |
"lifetime", "screen_time", "default_font" | show the clock in rainbow color |
blank_screen |
"lifetime", "screen_time" | "show" an empty screen |
date_screen |
"lifetime", "screen_time", "default_font", "r", "g", "b" | show the date |
brightness |
"value" | set the display brightness |
"r", "g", "b": Color components for red, green, and blue 0..255
"size": The size of the rindicator or alarm, 1-3
"percent": values from 0..100
"icon_name": the id of the icon to show, as defined in the YAML file
"text": a text message to display
"lifetime": how long does this screen stay in the queue (minutes)
"screen_time": how long is this screen display in the loop (seconds). For short text without scrolling it is shown the defined time, longer text is scrolled at least scroll_count times.
"default_font": use the default font (true) or the special font (false)
"value": the brightness 0..255
You can add screens locally and display data directly from any local sensor. See this sample:
Take care that the char text[30]; has enough space to store the formatted text.
sensor:
- platform: bh1750
id: sensorlx
...
on_value:
then:
lambda: |-
char text[30];
sprintf(text,"Light: %2.1f lx", id(sensorlx).state);
// 5 Minutes,each time at least 11 seconds,no alarm
id(rgb8x32)->icon_screen("sun", text); // uses default values for color etc.Force the selected icon_screen icon_name to be displayed next. Afterward, the loop continues from this screen. e.g., helpful for alarms. Or after an update of the value/text.
id(rgb8x32)->force_screen("homeassistant");Configuration variables/functions:
Experienced programmers can use these public methods:
To use the display without home assistant automations, you may use the advanced functionality with triggers. The triggers can be fired by sensors, time or by the ehmtxv2 component.
There is a trigger available to do some local magic. The trigger on_add_screen is triggered every time a new screen with an icon is added to the queue. In lambda's you can use two local variables:
icon (Name of the icon, std::string): value to use in lambda
mode (mode of the screen, uint8_t): value to use in lambda
See the examples:
ehmtxv2:
....
on_add_screen:
then:
- logger.log:
format: 'add screen: %s, mode: %d'
tag: "EHMTXv2 sample"
args:
- icon.c_str()
- modeThe trigger on_start_running is triggered when the display starts. It is triggered when time sync is done, and initial clock / date / version screens are loaded. This is to allow you to customize the default screens (for instance set colours for the clock).
The trigger on_icon_error is triggered if you try to add a screen with a non defined icon. In lambda's you can use one local string variable:
icon (Name of the icon, std::string): value to use in lambda
See the examples:
ehmtxv2:
....
on_next_screen:
lambda: |-
ESP_LOGD("Check CONFIG","Iconname: %s",icon.c_str());The trigger on_next_screen is triggered every time a new screen is displayed (it doesn't trigger on the clock/date display!!). In lambda's you can use two local string variables:
icon (Name of the icon, std::string): value to use in lambda
text (displayed text, std::string): value to use in lambda
See the examples:
ehmtxv2:
....
on_next_screen:
lambda: |-
ESP_LOGD("TriggerTest","Iconname: %s",icon.c_str());
ESP_LOGI("TriggerTest","Text: %s",text.c_str());To send data back to home assistant, you can use events.
ehmtxv2:
....
on_next_screen:
- homeassistant.event:
event: esphome.next_screen
data_template:
iconname: !lambda "return icon.c_str();"
text: !lambda "return text.c_str();"Result
The trigger on_next_clock is triggered every time a new clock display circle starts.
See the examples:
ehmtxv2:
....
on_next_clock:
lambda: |-
id(rgb8x32)->.......(D) Service brightness
Sets the overall brightness of the display (0..255)
parameters:
brightness: from dark to bright (0..255) (default =80) as set in the light component bycolor_correct: [30%, 30%, 30%]
There's an easier way, by using a number component:
number:
- platform: template
name: "LED brightness"
min_value: 0
max_value: 255
step: 1
lambda: |-
return id(rgb8x32)->get_brightness();
set_action:
lambda: |-
id(rgb8x32)->set_brightness(x);(D) Service del_screen
Removes a screen from the display by icon name. If this screen is actually displayed while sending this command, the screen will be displayed until its "show_screen"-time has ended.
Optionally, you can suffix a * to the icon name to perform a wildcard delete, which will delete all screens beginning with the icon_name specified.
For example, if you have multiple icons named weather_sunny, weather_rain & weather_cloudy, you can issue a del_screen weather_* to remove whichever screen is currently in a slot and replace it with a new weather screen.
Parameters:
icon_name: Iconiddefined in the YAML (see installation)mode: The mode is a filter to select different screen types e. g. use5for icon_screen
| mode | value |
|---|---|
| MODE_BLANK | 1 |
| MODE_CLOCK | 2 |
| MODE_DATE | 3 |
| MODE_FULL_SCREEN | 4 |
| MODE_ICON_SCREEN | 5 |
| MODE_TEXT_SCREEN | 6 |
| MODE_RAINBOW_ICON | 7 |
| MODE_RAINBOW_TEXT | 8 |
| MODE_RAINBOW_CLOCK | 9 |
| MODE_RAINBOW_DATE | 10 |
| MODE_BITMAP_SCREEN | 11 |
| MODE_BITMAP_SMALL | 12 |
(D) Service display_on / display_off
Turns the display on or off
There's an easier way in using a switch component:
Sample
switch:
- platform: template
name: "$devicename Display"
icon: "mdi:power"
restore_mode: ALWAYS_ON
lambda: |-
return id(rgb8x32)->show_display;
turn_on_action:
lambda: |-
id(rgb8x32)->set_display_on();
turn_off_action:
lambda: |-
id(rgb8x32)->set_display_off();Service skip_screen
If there is more than one screen in the queue, it skips the actual displayed screen to the next screen.
e.g., on the Ulanzi TC001
binary_sensor:
- platform: gpio
pin:
number: $left_button_pin
inverted: true
on_press:
lambda:
id(rgb8x32)->skip_screen();Service hold_screen
Displays the current screen for a configured amount (default=30) seconds longer.
e.g., on the Ulanzi TC001
binary_sensor:
- platform: gpio
pin:
number: $right_button_pin
inverted: true
on_press:
lambda:
id(rgb8x32)->hold_screen(120);(D) Service get_status
This service displays the running queue and a list of icons in the logs
[13:10:10][I][EHMTX:175]: status status: 1 as: 1
[13:10:10][I][EHMTX:176]: status screen count: 3
[13:10:10][I][EHMTX:181]: status slot: 0 icon: 36 text: 47.9°C end: 400
[13:10:10][I][EHMTX:181]: status slot: 1 icon: 23 text: Supa langer Text end: 310
[13:10:10][I][EHMTX:181]: status slot: 2 icon: 1 text: 10.3°C end: 363
[13:10:10][I][EHMTX:186]: status icon: 0 name: boot
[13:10:10][I][EHMTX:186]: status icon: 1 name: temp
[13:10:10][I][EHMTX:186]: status icon: 2 name: garage
[13:10:10][I][EHMTX:186]: status icon: 3 name: wind
[13:10:10][I][EHMTX:186]: status icon: 4 name: rain
To control your display, it has to be integrated in Home Assistant. Then it provides several services, all prefixed with the configured devicename e.g.,, "ehmtx". See the default services marked as (D) above, but you can add your own (see alarm and screen).
All communication with Home Assistant use the homeasistant-api. The services can be provided by default or also defined additionally in the YAML. To define the additional services, you need the id of the ehmtx-component e.g. id(rgb8x32).
The easiest way to use ehmtx as a status display is to use the icon names as trigger id. In my example, I have an icon named “wind” when the sensor.wind_speed has a new state, this automation sends the new data to the screen with the icon named “wind” and so on.
alias: EHMTX 8266 Test
description: ''
trigger:
- platform: numeric_state
entity_id: sensor.wind_speed
id: wind
- platform: state
entity_id: sensor.actual_temperature
id: temp
- platform: state
entity_id: sensor.wg_cover_device
id: cover
condition: []
action:
- service: esphome.ehmtx8266_icon_screen
data:
icon_name: '{{trigger.id}}'
text: >-
{{trigger.to_state.state}}{{trigger.to_state.attributes.unit_of_measurement}}
mode: queued
max: 10See templating for possibilities to optimize the output
e.g.
{{ states(sensor.solarpower, rounded=True) }} kWh
Add an icon per weather condition to the ehmtxv2 component
- id: weather_clear_night
lameid: 52163
- id: weather_cloudy
lameid: 25991
- id: weather_fog
lameid: 52167
......Sample automation to show the weather with local temperature
alias: EHMTX weather
description: weather with icon per condition
trigger:
- platform: state
entity_id: weather.metno
action:
- service: esphome.ulanzi_del_screen
data:
icon_name: weather_*
mode: 5
- service: esphome.ulanzi_icon_screen
data:
icon_name: weather_{{ trigger.to_state.state }}
text: >-
{{ states("sensor.external_actual_temperature") }}°C
....or another sample automation for the trashcan type
alias: "EHMTX Müllanzeige"
description: Anzeige welche Tonne raus muss. iconnamen gekürzt
trigger:
- platform: time
at:
- "06:30"
- "08:30"
- "10:30"
- "15:00"
- "17:00"
- "19:00"
condition:
- condition: numeric_state
entity_id: sensor.mulltrigger
below: "3"
action:
- service: esphome.ulanzi_del_screen
data:
icon_name: trash_*
mode: 5
- service: esphome.ulanzi_icon_screen
data:
icon_name: >-
trash_{{ states("sensor.mulldetails") | replace("Biotonne", "brow")|
replace("Papiertonne","blue")| replace("Restmüll", "grey")|
replace("gelbe Tonne","yell|") | truncate(4,true,"") }}
text: >-
{{ states("sensor.mulldetails")|replace(" in","")|replace(" days","
Tagen") | replace ("0 Tagen","heute") | replace ("1 Tagen","morgen")}}
lifetime: 120
...Add entities to the Home Assistant UI for interactive control of the display
number:
- platform: template
name: "$devicename brightness"
min_value: 0
max_value: 255
step: 1
lambda: |-
return id(rgb8x32)->get_brightness();
set_action:
lambda: |-
id(rgb8x32)->set_brightness(x);switch:
- platform: template
name: "$devicename Display"
icon: "mdi:power"
restore_mode: ALWAYS_ON
lambda: |-
return id(rgb8x32)->show_display;
turn_on_action:
lambda: |-
id(rgb8x32)->set_display_on();
turn_off_action:
lambda: |-
id(rgb8x32)->set_display_off();Awtrix and PixelIt have hard-coded functionality. EHMTX is also capable of building something like that with lambdas. Feel free to expierement as you see fit. See the Ulanzi simple YAML as a guide.
Example: automatic brightness control with a bh1570 sensor
sensor:
- platform: bh1570
# ...
on_value:
then:
lambda: |-
if (x > 200)
{
id(rgb8x32)->set_brightness(50);
} else {
id(rgb8x32)->set_brightness(250);
}- removed automatic boot logo display
- removed set_clock_color since clock_screen and date_screen will set color anyway
Due to this change, these values are fixed, e.g. you can not change the date or time format during runtime anymore!!
- changed *_interval to be set only on compile time
- change scroll_count to be set only on compile time
- change font_offsets to be set only on compile time
- change date/time_format to be set only on compile time
- renamed
indicatortorindicatorbecause there is now also alindicator
See this German tutorial video with information on setting up your display RGB-LED Status Display für Home Assistant mit ESPHome | ESPHoMaTrix.
Another german tutorial video focused on the Ulanzi Smarte Pixel Clock über Home Assistant steuern - Entitäten / Icons und mehr in der Ulanzi
See this nice article about EsphoMaTrix on a Ulanzi TC001 from blakadder.
Short video on Instagram @blak_adder
See these english discussions: Share your projects ESPHOME
It was also mentioned in the blog Building the Open Home and in the home assistant livestream
Or in German: Showroom
THE SOFTWARE IS PROVIDED “AS IS”, use at your own risk!
- blakadder for his contribution (cleanup README.md, fixed sample)
- dbuezas for his fonts infos
- jfurtner for his the on_start_running trigger and a new parameter
- andrew-codechimp for his contribution (display on/off & del_screen "*" & show_clock with 0) and improved blueprint slelection
- jd1 for his contributions
- aptonline for his work on the Ulanzi hardware
- wsbtak for the work on the Ulanzi hardware
- ofirsnb for his contributions
- trip5 for his work on optimized fonts and user support and work on the wiki
- pplucky for his 8x32 GIF animation
- dennisse Auto brightness for the Ulanzi
- hco fixing documentation
- geekofweek fixed sample YAML, cleanup documentation
- joncar fixed scroll small text
- Everybody who found bugs/issues and reported them!
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