Wled mqtt example github

Wled mqtt example github. manage up to 16+2 thumbs to match WLED capabilities. To install: Add the enties in the WLED00 file to the top of the same file from Aircoookies WLED. Open. 4-0. The previous code only looked for certain keywords in the topic instead of comparing it completely. Hex has '#','h' or 'H Aug 18, 2021 · I am a newbie to WLED and MQTT. g. For example if mqttDeviceTopic is set to "lights/colorRGB" the MQTT interface is unusable because Jul 25, 2022 · WLED MQTT API support. in the router device overview. The MQTT client ID, which is similar in concept to a hostname but MQTT specific. The text was updated successfully, but these errors were encountered: Jul 3, 2021 · It is possible to interface WLED with home automation systems and other 3rd party software. May 4, 2020 · The WLED MQTT settings are as below: I would like to define the WLED thing and channels in a new things file called wled. wled. binding. Use WLED and its interfaces for controlling the light and showing effects. If i use the Settings in the HTTP UI of WLED the power state is also restored. The presets are restored but not the power state the device was in. For the case in point using Dec 25, 2018 · I just found jour WLED. This rewrite removes the Nextion/TJC hardware requirement by using the Light and Create a folder in this folder with a descriptive name (for example usermod_ds18b20_temp_sensor_mqtt) ; Include your custom files ; If your usermod requires changes to other WLED files, please write a readme. MQTT Broker (it doesn't matter if you use the embedded Moquette or an external Broker like Mosquitto) Installed MQTT 2. md at master · SJRepos/openHAB-WLED-over-MQTT-Integration Usermod to add HTU21DF temperature and humidity sensor to WLED and send data to Home Assistant via MQTT - GitHub - DudeShift/WLED-HTU21DF-MQTT-HA-: Usermod to add HTU21DF temperature and humidity s mqtt-musiz-viz. I would like to control my relays (usermod: multi_relay) via MQTT. md outlining the steps one needs to take ; Create a pull request! Enter the downloaded T-Display-S3/examples directory Select any example and double-click the any_example. Control WS2812B and many more types of digital RGB LEDs with an ESP8266 or ESP32 over WiFi! - WLED/CHANGELOG. 8. The webinterface stayed reachable together with MQTT and UDP active. Up to 250 user presets to save and load colors/effects easily, supports cycling through them. Long-pressing for more than 6 seconds will open the WLED-AP with the default password (wled1234). This page is intended for sample code and configs others use to control WLED from various 3rd party software: HomeAssistant and NodeRED flows. It's designed to support equipment that may not always be online, like automated devices built with microcontrollers. Simulates a gradual sunrise or sunset. md at main · Aircoookie/WLED. I'm not saying WLED should implement the same thing, I'm only saying I really like the way Tasmota does MQTT, and I believe that Tasmota is a great example of getting it right. May 5, 2021 · ledmap. Simply clone the repository and run composer install to install the required dependencies. When I then unplug it and attach my WS2812B 8 led stick (GND => GND, 5V => VCC, Pin D4 => IN) and start it up, it will not connect to my network any longer! Instead, it MQTT Programming. Merged pull request #766 by @pille: Fix E1. No value can be modified using this API. The color/effect that is shown in the Apr 4, 2023 · When in web interface and dragging brightness slider, it does not update MQTT topic with the value (topic wled/6064f0/g). Star 13. Wait maybe 2 hours (can't say how much time to wait since both time I had a server crash, it lasted more then 2 hours since I was away). You switched accounts on another tab or window. Also the web interface slider is not updated. PWM1 - Red Jan 27, 2021 · Now it would be nice to have a Button tied to WLED that you can press to confirm that you have perceived the notification and turns the light off. 9. A tag already exists with the provided branch name. May 3, 2022 · Shutdown inexpectly the mqtt server (not a gracefull with a shutdown message) and maybe dns too. Message Queueing Telemetry Transfer, or MQTT, is a lightweight IP-based messaging protocol designed for communication between sensors, controllers, and other devices. Thanks to Gregory Mallios) ; Hyperion ; UDP realtime ; Alexa voice control (including dimming and color) ; Sync to Philips hue lights Nov 24, 2020 · Hi, I've configured WLED with MQTT yesterday to connect to homeassistant MQTT broker (mosquitto). Issues. A series of blogs to help developers get started quickly with MQTT in PHP, Node. MQTT settings are configured and I can see any topics and values in my MQTT Broker. 168. payload settings: switch to edit mode with a collapse button. json and add as value a comma-seperated list of supported effects of your choice. To show digits (which WLED can't), see wled. Pretty much a buzzer that you can hit to confirm you have seen the notification. Closed. I just tried ither Ways to Control my WS2812 via NodeMcu. net; Hyperion; UDP realtime; Alexa voice control (including dimming and color) Sync to Philips hue lights; Adalight (PC ambilight via serial) and TPM2; Sync color of multiple WLED devices (UDP notifier) Infrared remotes (24-key RGB, receiver Control WS2812B and many more types of digital RGB LEDs with an ESP8266 or ESP32 over WiFi! - MQTT · Aircoookie/WLED Wiki Contribute to dmonty2/homeassistant_wled_mqtt development by creating an account on GitHub. I changed the IP address in the WLED settings to 192. I now have one Stripe with your WLEd and one i build before with McLightning. For example the effects must be setup by a list for the topics and the same values will be shown in the light entity. Control WS2812B and many more types of digital RGB LEDs with an ESP8266 or ESP32 over WiFi! - MQTT · Aircoookie/WLED Wiki Hello! This is a usermod to use the strip as a timer with some functions based on MQTT messages. Change Color. 30. 0 or above flashed; Keep in mind, that at some point this example might not work as the WLED is discussing if they are going to change the mqtt topic structure. But I'm not coder at all and I'm not sure in what part of wled17_mqtt. 31 out-of sequence detection. Could an MQTT topic such as /json be added to simply receive packets and send them off to the existing desterilise fun . You can use any API WLED provides (JSON, HTTP, UDP, MQTT), JSON is preferred. Feb 28, 2021 · After PlatformIO IDE is installed, restart VSCode and open your unzipped WLED source code folder. CONFIG_MQTT_SAMPLE_TRANSPORT_MESSAGE. Board: NodeMcu ESP8266 ESP (V3) und NodeMcu ESP8266 ESP (V2) Version: WLED_0. on/off esp32 wemos D1. Full OTA software updatability (HTTP + ArduinoOTA), password protectable. in the 1# spot enter NL=1&ND. exe) funktioniert das WLAN des NodeMCU wieder zuverlässig. The shared settings can be found in shared/config. Alternatively, the examples can be altered directly. When I send a mqtt command to the WLED Device from HA to change the color, the color changes and the mqtt messages get published. Thanks to Gregory Mallios) Hyperion; UDP realtime; Alexa voice control (including dimming and color) Sync to Philips hue lights; Adalight (PC ambilight via serial) and TPM2; Sync color of multiple WLED devices (UDP notifier) Oct 5, 2020 · The mDNS address in WiFi settings. 3V with a 10k resistor and the configured macro executes when the pin is pulled low (grounded). 2. For addressing the sensor, just doing the same as in a simple sensor example sketch should work. If the broker has no password, introduce “noPassword” CONFIG_MQTT_SAMPLE_TRANSPORT_CLIENT_ID. See "Establishing Wi-Fi or Ethernet Connection" section in examples/protocols/README. Led are turned off according to the remaining time of the timer. @Aircoookie How do I configure sending MQTT msg when Alexa voice command is given turn ON or OFF the Led stip. Can anyone see a mistake I am making? WLED settings: Home assistant / NODE red settings: Message. Allows to setup a list of colors (use refresh button if no colors appear). Binary from Jul 26, 2021 · The simplest macro example is getting a button to do your bidding. All LEDs fade to their opposite color and back again. Go to Time and Macros. Created changelog. 2 LEDs flash in secondary color while the rest is lit in primary. All values may be modified by the client (see below) Nov 8, 2019 · Team I would like to simply turn ON and OFF my WLED strip in automation calling for specific effect. The MQQT interface allows the HTTP style packets to be sent, however not JSON. Wled has quite more effects and the possibillity to easy switch off is great. 0 contains a major overhaul of presets, storing them in a /presets. me. Additionally a delay can be specified. To use your own effects you have an option "effects" you can add to your config. MQTT; E1. 1. things, as that bridge is used for other things too which are in their own separate files (such as Tasmota and zigbee2mqtt devices). ino. k. I use FHEM as home automation server and connect WLED via MQTT. [mqttDeviceTopic]/api. md for more details. 14. for mqtt implementation. payload &M=1. Oct 18, 2021 · Control WS2812B and many more types of digital RGB LEDs with an ESP8266 or ESP32 over WiFi! - MQTT · Aircoookie/WLED Wiki WLED app for Android and iOS; JSON and HTTP request APIs; MQTT; E1. MQTT server programs are called brokers. MQTT SDKs. Fork 2. to turn on a light). Sponsor. You may also obtain those objects individually using the URLs /json/state /json/info /json/eff, and /json/pal. turn on Rainbow for 1 min for example 9 Rainbow Displays rainbow colors along the whole strip So to turn ON Rainbow action: service: mqtt. The node supports a single segment, and can control the effect (including speed and intensity), palette, color, and brightness level of the segment. cpp. 11. 0, Segments are supported. 10. It's well integrated with home automation systems like Home-assistant, domoticz and others through MQTT broker. 41 and rebooted the Wemos. This allows a client supporting Zeroconf to resove xxx. #574. Set the FX to SOLID and 2. If you have started the ESP32 you can see on serial port some debugging info like wifi connection and broker connection, in mosquitto terminal tab also you can see our client connection like something like this: Jan 23, 2024 · @tech-byte That is what i am saying , there is no ON /OFF in mqtt response , what you are seeing after the = is just the mqtt client last command so not an mqtt response from wled , the offline stataus is not also related to the unit on/off but only related to if the device is seen on the mqtt broker meaning it is offline or online from network point of view , i hope the below video will make MQTT support for IoT; Entertainment API v2: per-channel support for Philips Gradient Strip and others; Automatic LUT calibration detects grabber model specific properties for the best quality of HDR/SDR; Optimized multi-instances. Shows primary and secondary color on alternating LEDs. button to distribute evenly the thumbs. CONFIG_MQTT_SAMPLE_TRIGGER_TIMEOUT_SECONDS. 0 protocols. use the current color selection UI for color stops (a. php. I think for simple color averaging even a real time stream using MQTT subscription is OK. draw a line between the thumb and the actual matching position on the palette (UX in openHAB MQTT Based Integration of the WLED Project by Aircookie - openHAB-WLED-over-MQTT-Integration/README. A simple Python script with Aubio to sync MQTT devices (Z2M, WLED, Tasmota) in time to music. I found here @debsahu workaround code to add to wled00. I found them useful for myself so I thought I'd share them as a Configure the project. md at master · regnets/openHAB-WLED-over-MQTT-Integration openHAB MQTT Based Integration of the WLED Project by Aircookie - openHAB-WLED-over-MQTT-Integration/README. This repository contains examples of MQTT clients using the MQTT 3. After checking the logs, it is also helpful to look at the mqtt topics with this command: mosquitto_sub -u usernamehere -P passwordhere -p 1883 -v -t 'wled/#'. Expected Behavior. Jun 29, 2018 · Hi, I also use Homeassistant and use currently McLightning this works perfect together with HA and could be a good example. [mqttDeviceTopic] -> Send brightness as ASCII number 0-255 or the strings "ON", "OFF", and "T" (for toggle) [mqttDeviceTopic]/col. . 6k. local to the WLED IP. To Reproduce Bug. ino file waits for 60 seconds, and checks to see if the MQTT server is connected (thanks Aircoookie). Nov 12, 2018 · So authentication is required to use full mqtt functionality. 30 c. Also to change secondary Color is quiet a great feature. You can edit the MQTT server to connect to, and add devices to the array (following the example of what's in there). Integrated level shifter, 4 outputs for LEDs strips, 1 fused out for LED strip, resettable fuse for the development board, exposed I2C interface for display or sensors, relay for energy-saving and 1-wire temperature sensor. I do not want to add it to bridge. publish data_template: topic: [Device Topic. If the last color is reached the next key press goes back to the beginning of the list. Relevant log/trace This starts an MQTT Broker on default port 1883. 6 only, WLED supports MQTT autodiscovery by the HomeAssistant software. things. No existing segments should be created, existing ones should be upgraded. All of the MQTT payloads are based on the same set of commands that can be entered in Tasmota's web-ui console, MQTT payload, or the HTTP api, all 100% consistent. This project is a re-implementation of the popular HASwitchPlate sketch created by aderusha. CONFIG_MQTT_SAMPLE_TRANSPORT_BROKER_PASSWORD. You signed out in another tab or window. Changes you make to color or effects will apply to all selected segments. Sep 23, 2019 · You could use a different sensor and a home automation platform or similar solution. MQTT Examples. Run a server taking commands via MQTT on Dec 7, 2021 · Removing the address from the DHCP server and setting same address in WLED the problem was still there. Obtaining light information. 5 Binding; Working ESP8266 or ESP32 with WLED 0. vic2kzz opened this issue on Jul 25, 2022 · 1 comment. 255 does not give full brightness, more like half brightness. net ; diyHue (Wled is supported by diyHue, including Hue Sync Entertainment under udp. blazoncek closed this as completed on Jan 25, 2023. It works well but so Aug 24, 2020 · WLED does support this via E1. 0_ESP8266. 82 KB. We have selected popular MQTT client SDKs in various programming languages and provided code examples to help you quickly understand the use of MQTT clients. In your MQTT program use topic wledcontrollernamehere/api. md - make tracking changes to code easier. Pull requests 60. log:set DEBUG org. Control your home-automation devices from a customizable touchscreen UI connected via MQTT. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Up to 3 LED outputs per ESP8266 instance and 10 LED outputs per ESP32 instance. Apr 14, 2019 · Hi, first of all thank you so much for this great software for the esp8622! It seems i have a problem with MQTT. There are a few nuances to consider: how to behave when the LED device is off (currently the color is set to black), what averaging algorithm to use (currently simple averaging, but HyperHDR has long since WLED versions since 0. ino and wled17_mqtt. You can use for example your TV LED strip and multiple WLED or Philips Hue light sources. Demo video on youtube. And WLED client can't publish any data to Mosquitto without authentication as far as I check it with MQTT Explorer. Open the browser and go to the device IP address. This is more advanced and configurable, but probably overkill for your and many other's needs. json file in an internal filesystem. Blame. WLED will subscribe to up to six topics to change the state of the lights. Oct 9, 2019 · Send JSON commands via MQTT #819. All values may be modified by the client (see below) info contains general information about the device. It is very rough and just been used personally. 198 lines (167 loc) · 5. What version of WLED? 0. It wasn't working until I notice the default password of mosquitto in homeassistant is too long for WLED. Notifications. wled/6064f0 the LED's do respond but not correctly, i. net, and while I agree that setting individual LEDs at a fast rate via MQTT or HTTP is not a good idea due to TCP overhead, only sending them periodically (like in your 8x8 image frame use case) would be a nice feature. The buttonpress shall then send a specific MQTT message to the configured MQTT broker. Price for components was about 18€ (see comment ). When using Make build system, set Default serial port under Serial flasher config. DIY board, 100% compatible with WLED project and WLED sound reactive fork. This action has two modes: Manual: Each key press switches to the next color from the color list. MQTT ; Blynk IoT ; E1. MIT license. To my surprise everything was stable. Feb 29, 2020 · Hi, i use &PS and &PL to store and reload settings via MQTT. js, Python, Golang, and other programming languages. Client’s ID. It has two parts broker/server and client. 31, Art-Net or TPM2. I can use Alexa commands but I need to send the MQTT msg so it can be monitored. All effects are found under Effects-List - WLED (Just use Names from the Effects and not from the palettes!!) sample additional option: Control WS2812B and many more types of digital RGB LEDs with an ESP8266 or ESP32 over WiFi! - MQTT · Aircoookie/WLED Wiki Feb 8, 2020 · wledPixel ESP8266 and MAX7219 dot matrix display management The latest firmware version can be found in Releases Supported key features: Home Assistant client [display sensor values] OpenWeatherMap client [display: temperature (C/F), humidity, pressure, wind speed, weather icon] MQTT client [each display zone support own topic] Wall NTP clock [NTP sync clock] Manual input Full controll through The mqtt light platform with JSON schema lets you control a MQTT-enabled light that can receive JSON messages. A node for controlling WLED devices from NodeRed. md at master · sjhangiani/openHAB-WLED-over-MQTT-Integration Build 2003121. 0 (ESP32-D0WDQ6 build 2310130) AP wifi name: wledPixel- [short MAC address] AP wifi password: 12345678. A Client can subscribe to a topic and publish messages Aug 4, 2023 · 1. It then poles the sensor, and published it using the MQTT service already running, using the main topic programmed in the WLED UI. When I send a value (ON, OFF or TOGGLE) vi The default (built-in) actions for button 0 are short-press: toggle on/off and long-press: select random color. Aug 31, 2020 · Set the "timed Light" to sunrise in the drop down and set the brightness to 255 (full brightness) and the "time" is how long you want the sun to rise. The default pin to which a button can be connected is GPIO 0 (D3 on NodeMCU, D1 Mini and others). openhab. #Introduction MQTT is a protocol like HTTP or HTTPS, but it is simple, secure, fast and based on TCP/IP . 4 implement a powerful JSON API over HTTP. 0-windows-x64. When publishing MQTT value 0-255 to topic i. This pin is ideally pulled high to 3. Aug 30, 2021 · WLED Wemos shield. net; diyHue (Wled is supported by diyHue, including Hue Sync Entertainment under udp. WLED should reconnect to the mqtt server. The server description in UI settings is also used as the IP layer hostname and displayed e. a. Answered by awawa-dev on Aug 4, 2023. e. Configure multiple segments with multiple JSON messages trough MQTT, one at a time. py menuconfig) Configure Wi-Fi or Ethernet under "Example Connection Configuration" menu. Dies habe ich jetzt mehrmals ausprobiert. This enables many new features, you can now have up to 250 presets and each of them can save all segments which are set up! Speaking of segments, the maximum number has been increased to 12 on ESP8266 and 16 on ESP32! node-red-contrib-wled2. When creating a new preset, the entered name may be replaced by a timestamp; the preset contents may be replaced by the current state MoonModules/WLED#114. Spin-up mqtt and dns. WLED 0. ino to open it Open ArduinoIDE , Tools ，Make your selection according to the table below 16x16 pixel RGB LED matrix with support for WLED and text (digits only for now). Binary from WLED. I see some problems with the current wled behavior. Additional context By Karl_S via Discord #learning The . The HASPone project uses a Wemos D1 mini and requires a Nextion/TJC HMI display. Describe the solution you'd like A checkbox for setting whether publishes from WLED should retain or not. May 8, 2021 · You signed in with another tab or window. Broker’s password. What version of WLED? Installed version: WLED 0. -> Send color as HEX (#WWRRGGBB or #RRGGBB) or 32bit DEC. When the timer starts, the strip is filled with the color of the solid effect. Connect to this AP and configure your wifi settings (connect to your wifi network) When the device connects to the WIFI network, the device's IP address will be displayed on the zone0. Automatic: The colors automatically change after a given time. Jun 8, 2021 · Effects. thumbs) manage thumbs collisions. ino should I add Sep 12, 2022 · Hi. Cannot retrieve latest commit at this time. Mar 13, 2020 · Im using home assistant, with plex integration, I dont think MQTT is used. For further buttons, the default action for short press is cycling effects, long press ramp brightness, and double press cycle palettes. Hello! This is a usermod to use the strip as a timer with some functions based on MQTT messages. The position of values in the array is the "natural" order of LEDs and the value entered is the new position. Install Method. Emstar mentioned this issue on Jan 28. I have selected all the segments in the wled mobile app, however when the call service is triggered only segment 0 changes effect, the others remain the same. Aircoookie / WLED Public. 1, 3. You can then run the examples one by one, but please don't forget to change the shared settings like the MQTT broker host and port before. Code. 31, Art-Net, DDP and TPM2. Contribute to dmonty2/homeassistant_wled_mqtt development by creating an account on GitHub. Mar 1, 2024 · When the color is changed via the WLED WebUI the mqtt messages are published correctly. json file needs to be a JSON formatted file with the the key being "map" and the value being an array of numbers representing the new order of pixels. Overview. ino file. Now you need to find which GPIO pins go to which color and make these adjustments in your code. What was the last working version of Home Assistant Core? No response openHAB MQTT Based Integration of the WLED Project by Aircookie - openHAB-WLED-over-MQTT-Integration/README. #Mqtt-Example using javascript , nodejs This is an example of Mqtt server-client implementation with mosca and mqtt module. We normally use MQTT to avoid dependency on Home assistant , having generic solution like MQTT will help provide more options and it is a door to more advanced control . This feature allows you to set different zones on the LED strip, each running a different effect or color. Oct 29, 2019 · It will open an AP and let me enter my wifi (and mqtt) credentials. Open the project configuration menu ( idf. Reload to refresh your session. XYZ ]/Segment/switch/set payload: on topic: [Device Topic. The ArduinoJSON library is extremely white-space sensitive. This schema supports on/off, brightness, RGB colors, XY colors, color temperature, transitions and short/long flashing. Code the desired behavior yourself in the wled06_usermod. Aug 8, 2020 · Sobald ich MQTT deaktiviere (durch ESPHome-Flasher-1. The flashing LEDs wander from start to end. Which microcontroller/board are you seeing the problem on? ESP8266, ESP32. I've tried to setup my MQTT towards WLED, yet I am unable to get response. h" /* * MQTT communication protocol for home automation */ #ifdef WLED_ENABLE_MQTT #define MQTT_KEEP_ALIVE_TIME 60 // contact the MQTT broker every 60 seconds void parseMQTTBriPayload (char* payload) { if (strstr (payload, "ON WLED will subscribe to up to six topics to change the state of the lights. Oct 10, 2021 · WLED MQTT messages are mostly retained, this could lead to broker storage issues and/or annoying residual messages. This has been removed because of bootloop issues and in favor of the native HomeAssistant integration. Thanks to Gregory Mallios) Hyperion; UDP realtime; Alexa voice control (including dimming and color) Sync to Philips hue lights; Adalight (PC ambilight via serial) and TPM2; Sync color of multiple WLED devices (UDP notifier) Nov 24, 2019 · I have a strange behaviour when I connect my Wemos D1 mini R1 running to an MQTT-Server listening to a port other than 1883 ( in my case 1884): A soon as WLED connects to the MQTT-Server it freezes totally. This causes the LEDs to run the selected effect until the delay expires, then switch May 2, 2020 · sjude68 commented on May 2, 2020. WLED app for Android and iOS; JSON and HTTP request APIs; MQTT; Blynk IoT; E1. Nov 9, 2020 · Is it possible to reset the WLED with a API/MQTT command, so i dont have to go into the garden :-) I have looked at the examples and wiki but was not listed. Dec 8, 2023 · mqtt status takes a long time to update esp8266 wled/wled/status 30 seconds esp32 wled/wled/status 2 minutes which is very long. py which sends pixel information to WLED via UDP. If changing the colour is not working or taking a while, be sure to 1. The messages sent to/from the lights look similar to this, omitting fields when they aren’t needed. Control topics, of the form setXXX, are published by MQTT-Thing in order to control device state (e. 9k. Then click save. It is accessible using the /json subpage. When I then restart, it will connect to my network (I can ping it and wled/# will receive mqtt payloads). Segments to set different effects and colors to parts of the LEDs. I used variants of these usermods recently to share the ESP8266 boards WLED was running on with various sensors, reporting over MQTT. that a sensor has detected something or a control topic action has been performed). In v0. 0-b4. bin; Format: Binary Sep 20, 2019 · Single LED color via API support · Issue #226 · Aircoookie/WLED · GitHub. Publishing period in Mar 27, 2019 · The response consists of four objects: state contains the current state of the light. What version of Home Assistant Core has the issue? 2024. MQTT message that will be published on the publishing topic. A segment is selected if the checkmark next to the segment number is checked. Is that possible? Starting in WLED 0. Sending a GET request will return an object similar to the sample below The response consists of four objects: state contains the current state of the light. #include "wled. XYZ ]/Segment/fx/set payload: 9 and to turn OFF A tag already exists with the provided branch name. Thanks to Gregory Mallios) Hyperion; UDP realtime; Alexa voice control (including dimming and color) mqtt. I've used the same settings for my SONOFF MINI + RF BRIDGE (except for different topics etc) and this is working fine. Status/notification topics, of the form getXXX, are published by the device to notify MQTT-Thing that something has occurred (e. Describe alternatives you've considered Editing mqtt. I also added 4-relays with MQTT. 3. 1, and 5. Hex has '#','h' or 'H' as prefix. Pixel led MQTT panel (wLed) wLed panel it's dot matrix display to show information from MQTT topics. button to delete current thumb. You can use these examples to learn about the MQTT protocol and how to use MQTT clients with any MQTT broker. ry jh rl aj gi at jw cu zd ze