I watched your video a year ago and thanks to you I had a very good starting point implement what I desire, so there is no words that can express my gratitude for your efforts with such a great explanation!

Thank you So much! I couldn't simply go without thanking you after watching this video.. Thanks for sharing your knowledge!

Wow, this looks fantastic. Can't wait to try it out. Many thanks for sharing and providing a very detailed and clear review of options that are available for Iot systems. Best wishes, Arthur

Martin, very well done! I've been looking toward MQTT broker in router (openwrt), but I think I favor this solution. By the comments and your responses this project is (will be) solving a dilemma many of us have faced. Bravo.

Hi Martin A very clear video about your project Your idea is great

Very well done overview and video presentation. One of the best I have seen. I will be checking out the esp_uMQTT_broker, it looks impressive. Thank you for taking the time to put together such a well thought-out and detailed introduction.

Excellent work! Thank you for sharing!

Ja genau was ich gesucht habe. Suche noch das folge Video um mehr zur der einfachen Programmsprache zu erfahren. Gute Arbeit für schmale Projekte ideal.Danke Martin für deine tolle Arbeit.

Excellent video..eagerly waiting for your next video

Wow... Thank you so much, almost use my very old laptop as broker. Excellent work! Thank you for sharing!

Really nice work. Broker works fine, and scripting language too! Thanks for sharing and keep on good work.

Thanks so much for this Martin, it's a really nice architecture. Have you ported it to ESP32 yet or know of anyone who has?

Great !! I was searching this months ago. Great work man

Great work! Thanks

Hi Thank you so much for sharing your knowledge

Hi Martin. First of all it's a great idea. Due to security concerns, I don't think it is good idea to expose uMQTT to internet. However, it should be really cool working in the internal network, acting in a mesh network. Best regards, Luiz Almeida.

Thank you very much, very nice presentation

It works! Thank you very much. I tested it with 2 clients, an ESP8266 client and an Android phone with MyMQTT. I will migrate all my machine-to-machine apps to MQTT.

will u please upload the video how to setup mqtt broker on nodemcu as soon as possible...thank you

Very nice project but it would had been great if you could had shown us step by step in installing broker and client in video

Hi Martin, thank you very much for this great project. Could you please create another video, how to implement and use your esp_uMQTT_broker library in an ESP32 please? Thanks a lot and with best wishes, Lars

I think that this is very clever, Martin Ger. I'm just starting to get into this stuff, but can imagine that if multiple ESP devices were set up to be client/brokers, it could create a mesh data network. Am I correct? Have you tried this with the ESP32s that have more memory and speed?

Wonderful!!! good work

Hi Martín! Great work, i really appreciate your generosity on sharing this with us. I've been using the broker on my nodemcu chip for a while, very stable by the way. I was wondering how could i use it as a library in lua. Is there any out there?

I am waiting for the next from you to load uMQTT inside of ESP

Thank you very much. It was quite helpful to decide on my requirements. One quick question.. Can I use the same architecture (using only ESPs ) to implement mqtt mesh for farm automation as wifi range of devices is concern to me. If so please can you suggest me a best mqtt mesh libraries for ESPs..

mqtt broker works fine but hard to connect with esp mqtt client to broker esp i get issue failed, rc=-2 try again in 5 seconds Attempting MQTT connection...failed, rc=-2 try again in 5 seconds

Martin - awesome work based on the video. I am eager to replace rpi with esp broker. Perhaps moving this to ESP32 would be better since more resources exist? So one question popped out based on the video, when you say max 8 connections, are these concurrent connections? Is there a config to determine the how long before connection becomes stale? Thanks again

Hi Martin, are there any plans for ESP32 or ESP32-S2 as well?

Hi Martin thanks for the upload. I read through your github uploads and fiddled with the uMQTTBroker example in the arduino IDE. Although I am not always certain which info to change in the code for my specific purpose for eg/: if it says topic in the arduino code is that a variable or shall I change that to my topic name. If you perhaps had time could you please go over dowloading the uMQTT broker on to an ESP module. thank you.

This is a great idea but when I try to use the mqtt_sub.IMO example I get an error MQTT does not name a type on MQTT myMqtt(CLEINT_ID,192.168.0.1.1883); What am I doing wrong?

Hi Im late to the party as usual, this looks like a great lil project, ideal for my BAN (eBike Area Network) initially a rgbled control system for lighting and indicator warning lighting..

Hi, great work! It's possible to do it with a Sonoff Zigbee Bridge? Thanks!

Good Job man

Hi Martine sir I need your answers for following questions. 1. Can we use esp8255 for industrial applications? If yes, then where we have to buy good quality esp8266 ?

Hello, I am having difficulty getting the data through an ESP01 client. I was able to make an ESP01 by generating an AP through it, being a publisher, and owning an internal broker. From the app "MyMQTT" present in the playstore I manage to make my smartphone a client. But I can't make an ESP01 connect as a client. Can you help me? Thanks.

Hi! looked at your code in the example for arduino, is delay (1000) required in the loop () function?

Hi, How do I compile all the files? I am currently using Arduino IDE, but I really need the MQTT broker on the esp8266, because it can handle the mqtt pub/subs and can work either offline as online, right? I want to make a wall-controller with buttons, build with esp8266 and I want to use multiple esp8266 for the lights, I don;t want to be depending on a mqtt server.

How would I set up an iphone app as a client with this to display sensor data. Can this go outside local network?

Hi, thanks for awesome video. Please guide me how can I use ESP as uMQTT broker and mobile app and another ESP as clients? It will be actually a stand alone network. Is that possible?

Hi, Thanks for the video, But I have no clue how to setup your code. If this video is for experts then I am sorry for asking the question. If not, then can U please explain how to set it up, where to set it up and how to run it?

Hi, good project. How can I add other commands like 'on','off', 'toggle', and 'blink', Thanks.

Good way it's create broker on router Xiaomi, 2 in one, router+mqtt broker (with modificate firmware)

Hi Martin, I don't know if you will see this message but I'll post anyway. I'm planning a Lora application where I'll have 20 Lora esp32 nodes geographically distributed within 1.5km. All nodes will communicate with a central hub device only. The hub device will also send response messages to the nodes so it's two-way communication. Each node will have a keypad whereby users will transmit approximately two bytes of data back to a central hub (maybe a raspberry pi with Lora shield). The central hub will then respond to an incoming message by communicating a "message received" response to the node that originally sent the data. My first question is what would be the best choice of device for the central hub, I'm thinking of raspberry pi4 with a Lora shield maybe My second question is what software do you recommend? Some of the problems I see are - how will the central hub handle two or more messages coming in at the same time - should I dedicate a second hub device to handle responding to nodes to make sure the receiving hub is not too busy - can the available open source mqtt software handle all this or am I hoping for too much Also just to say this is not a commercial project, I'm developing this to help out a sporting organisation which is struggling so there's no gain in this for myself Thanks for your video, very clear :)

Спасибо. Получилось запустить брокера на ESP8266.

Thank you very much Martin for this valuable work , As you know the most important part of IOT is its security , My question is about MQTT username and password and SSL connection to esp-broker , I'm using Arduino source code and I didn't get how to add a username and password in the ESP broker and connect to it using MQTT-Client , I will appreciate if you add an example about adding username and password in the sketch and use it on mqtt-client , Regards , M

A shame this has not gone further I see no other reference to running MQTT on an esp everybody wants to use a Raspberry I wish someone would do more on the subject 11-06-2021

Hello, Martin. I am very glad you shared your work. I set up an 8266 as a standalone MQTT server using the Arduino IDE according to the "fast-and-dirty hack" instructions in the README.md file from your esp_mqtt fork. It works! I loaded MQTT.fx on my Windows computer, and MQTT Snooper on my Android phone, and can publish and subscribe messages to topics between the two. Perfect. However, upon enabling Telnet on the PC, I cannot connect to the broker. The response was: "Connecting To 192.168.4.1...Could not open connection to the host, on port 7777: Connect failed" from Telnet. I tried the PuTTY clone, SmarTTY, getting similar results: "Connection test failed: No connection could be made because the target machine actively refused it 192.168.4.1:7777". Am I missing something? ...or is something not working right? Again, thanks for the very-nice broker implementation.

Could this be used on an ESP32? I wanted this for 15-20 total ESP32. One 'master' and many 'slaves'.

connect to esp8266computer's USB ports, everything working fine. But, if I connect esp8266 to separate charger that has USB port, then esp 8266not running code

Das klingt sehr interessant, aber wie bekomme ich das auf einen D1 mini drauf? Ich probier da jetzt schon stundenlang rum, aber im WLAN taucht MyAP einfach nicht auf. Mit Tasmota funktioniert es einwandfrei... Ich hab zuerst versucht, die .bin aus dem firmware Ordner mit ESPEasy Flasher einzeln aufzuspielen, dann hab ichs über Linux Mint und ESPtool erfolglos versucht, jetzt hab ich noch mit dem Download Tool von Espressif beide .bins versucht an jeweils 0x0... und 0x1... zu flashen. Auf drei Arten versucht den Flash zu erasen, mit GPIO0 auf low geflasht, zig mal resetted, aber ich bekomm einfach nie den "MyAP" angezeigt. Kann mir da jemand weiterhelfen?

Hi. I need to run ESP8266 as a Broker. There are a few places in uMQTTBroker.h library that I hang out with. 1) How to connect a broker with ESP8266 2) How do we assign a username and password to this broker when we run as ESP8266 Broker?

how can we connect this to cloud

Would it work and would it work any better on ESP32?

Works perfectly. I use umqqt broker in my project. Super great work. Thanks for the dirty hack for adding the library to esp repo.

how to interconnect esp8266 with each each sir ???

how to change port 1883 and (change username + password) ? Thanh you !

Static ip with Mqtt server... Local network is not real internet...

Well I'm a noob at this can someone help me ?

Has anyone used this successfully on a Shelly 1?

Martin, Great work! Some would say an ESP8266 MQTT broker is not practical and yet here is a broker plus more! This is true full utilization of an ESP8266 when a limited number of MQTT clients are planned. I am thinking about placing your broker code plus my existing client/control code into this ESP8266 RGB LED controller - tinkerman.cat/closer-look-h801-led-wifi-controller/#lightbox-gallery-kUiZ/4/. Actually I likely will switch also to your scripting/control - looks nice. Is flash usage with control and scripting such that OTA update support could be added? The H801 LED controller has an 8Mbit flash so code plus file system

Little more from my serial log data: MQTT_ClientCon_recv_cb(): 2 bytes of data received MQTT: TCP: data received 2 bytes (State: 17) MQTT: total_len: 2 MQTT: message_type: 12 MQTT: receive MQTT_MSG_TYPE_PINGREQ MQTT: Server task activated - state 17 MQTT: Sending, type: 13, id: 0000 MQTT_ClientCon_sent_cb(): Data sent MQTT_ClientCon_recv_cb(): 26 bytes of data received MQTT: TCP: data received 26 bytes (State: 17) MQTT: total_len: 26 MQTT: message_type: 3 MQTT: Publish received, message_len: 26 MQTT: Published topic "\GREENHOUSE\" MQTT: Matches to: MQTT: Client: Office Topic: "#" QoS: 0 MQTT: Next message to client: Office MQTT: Server task activated - state 17 MQTT: Sending, type: 3, id: 0000 MQTT_ClientCon_sent_cb(): Data sent WD : Uptime 21 ConnectFailures 20 FreeMem 17912 UDP : Send Sysinfo message EVENT: Rules#Timer=1 ACT : Publish GREENHOUSE/IP,192.168.0.70 ACT : timerSet,1,30 EVENT: Processing time:266 milliSeconds EVENT: Clock#Time=Mon,22:22 EVENT: Processing time:260 milliSeconds WD : Uptime 21 ConnectFailures 20 FreeMem 17912 UDP : Send Sysinfo message EVENT: Rules#Timer=1 ACT : Publish GREENHOUSE/IP,192.168.0.70 ACT : timerSet,1,30 EVENT: Processing time:266 milliSeconds MQTT_ClientCon_recv_cb(): 2 bytes of data received MQTT: TCP: data received 2 bytes (State: 17) MQTT: total_len: 2 MQTT: message_type: 12 MQTT: receive MQTT_MSG_TYPE_PINGREQ MQTT: Server task activated - state 17 MQTT: Sending, type: 13, id: 0000