# MQTT not working **URL:** \ **Category:** Flows\ **Created:** [August 28, 2019, 12:23pm UTC](https://community.homey.app/t/mqtt-not-working/17437 "2019-08-28T12:23:07Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Jeroen\_Kokhuis](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jeroen_kokhuis/32/12592_2.png) [@Jeroen\_Kokhuis](https://community.homey.app/u/Jeroen_Kokhuis)\ **Post date:** [August 28, 2019, 12:23pm UTC](https://community.homey.app/t/mqtt-not-working/17437/1 "2019-08-28T12:23:07Z")
I start with MQtt. Installed the client and the broker. In MQTT.fx is see this: ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/2X/f/fbd7a93d975da6a85364d374850a06074e4d5936.png) so it’s working. But when I want to use the card “Receive topic triggers” the flow is not triggered. Nothing happend. ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/2X/e/e77af1232618256ed0ec65a130146a8361f68551.png) I have nothing in the “And” section, so the flow has tobe trigger when the state of the topic changed. Or am I wrong? ---
**Author:** ![Rocodamelshekima](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rocodamelshekima/32/8209_2.png) [@Rocodamelshekima](https://community.homey.app/u/Rocodamelshekima)\ **Post date:** [August 28, 2019, 12:32pm UTC](https://community.homey.app/t/mqtt-not-working/17437/2 "2019-08-28T12:32:00Z")
Moved to English. ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [August 28, 2019, 12:38pm UTC](https://community.homey.app/t/mqtt-not-working/17437/3 "2019-08-28T12:38:41Z")
Are you sure that the client is using the correct settings? It doesn’t look like it’s checking to see if the values that you enter are actually valid. ---
**Author:** ![Jeroen\_Kokhuis](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jeroen_kokhuis/32/12592_2.png) [@Jeroen\_Kokhuis](https://community.homey.app/u/Jeroen_Kokhuis)\ **Post date:** [August 29, 2019, 8:56am UTC](https://community.homey.app/t/mqtt-not-working/17437/4 "2019-08-29T08:56:25Z")
This client is use the correct settings. See the log: `20190829-10:53:02 successfully subscribed to topic /ESP_Doorbell/Switch1/State` ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [August 29, 2019, 9:08am UTC](https://community.homey.app/t/mqtt-not-working/17437/5 "2019-08-29T09:08:43Z")
I can’t reproduce the issue, it works fine for me with that particular topic. Formally speaking, _“so the flow has to trigger when the state of the topic changed”_ isn’t correct: it will trigger when a new message is sent to that topic, no matter what the value is. ---
**Author:** ![Jeroen\_Kokhuis](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jeroen_kokhuis/32/12592_2.png) [@Jeroen\_Kokhuis](https://community.homey.app/u/Jeroen_Kokhuis)\ **Post date:** [August 29, 2019, 9:19am UTC](https://community.homey.app/t/mqtt-not-working/17437/6 "2019-08-29T09:19:38Z")
This is the flow. I keep it simple for testing. ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/2X/c/cfca6fb3d0c7fe4b2b1fdd82eb06e8ec6558c7c1.jpeg) I use a switch to trigger. In MQTT.fx it works fine. ---
**Author:** ![Jeroen\_Kokhuis](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jeroen_kokhuis/32/12592_2.png) [@Jeroen\_Kokhuis](https://community.homey.app/u/Jeroen_Kokhuis)\ **Post date:** [August 29, 2019, 9:31am UTC](https://community.homey.app/t/mqtt-not-working/17437/7 "2019-08-29T09:31:38Z")
It doesn’t work with telegram. It does work with “send message to mobile” ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [August 29, 2019, 10:59am UTC](https://community.homey.app/t/mqtt-not-working/17437/8 "2019-08-29T10:59:22Z")
Okay, so the problem is the Telegram app , not the MQTT client app 🙂 ---
**Author:** ![Jeroen\_Kokhuis](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jeroen_kokhuis/32/12592_2.png) [@Jeroen\_Kokhuis](https://community.homey.app/u/Jeroen_Kokhuis)\ **Post date:** [August 29, 2019, 11:36am UTC](https://community.homey.app/t/mqtt-not-working/17437/9 "2019-08-29T11:36:28Z")
With other flows Telegram works fine. It’s strange Met vriendelijke groet, Jeroen Kokhuis Op 29 aug. 2019, om 13:09, Robert Klep via Homey Community Forum [athom@discoursemail.com](mailto:athom@discoursemail.com) schreef: ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [August 29, 2019, 11:42am UTC](https://community.homey.app/t/mqtt-not-working/17437/10 "2019-08-29T11:42:21Z")
Try a simpler Telegram card, one with fixed texts instead of using tags. ---
**Author:** ![Jeroen\_Kokhuis](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jeroen_kokhuis/32/12592_2.png) [@Jeroen\_Kokhuis](https://community.homey.app/u/Jeroen_Kokhuis)\ **Post date:** [August 31, 2019, 11:16am UTC](https://community.homey.app/t/mqtt-not-working/17437/11 "2019-08-31T11:16:29Z")
The telergram app crashed. It’s now working. Thanks ---
**Author:** ![DanGer61](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/danger61/32/9996_2.png) [@DanGer61](https://community.homey.app/u/DanGer61)\ **Post date:** [March 27, 2020, 12:32pm UTC](https://community.homey.app/t/mqtt-not-working/17437/12 "2020-03-27T12:32:15Z")
I installed the Mosquitto server in Windows 10. ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/4/3/438db6fba5ebf5a03598a868954d8520b88b223c.png) Is the ip-address of the Mosquitto server then : 192.168.0.157:1883 ? In Homey I installed the apps MQTT Client and MQTT Hub. ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/8/f/8ff9674ba6a57599f41f62060c9fa91fb79c171e.png) ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/d/5/d52b36c3bdf96e47aa3cc9aeeedeb7fc61fbce1e.png) Triggering in Homey works. When a publish a message in MQTT-explorer the trigger in Homey doesn’t do anything. What I a doing wrong. ---
**Author:** ![PascalB](https://avatars.discourse-cdn.com/v4/letter/p/dbc845/32.png) [@PascalB](https://community.homey.app/u/PascalB)\ **Post date:** [March 27, 2020, 2:13pm UTC](https://community.homey.app/t/mqtt-not-working/17437/13 "2020-03-27T14:13:53Z")
Do you see state changes in MQTT explorer when you switch something on/off in Homey? Also, what topic are you publishing to with MQTT explorer? ---
**Author:** ![DanGer61](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/danger61/32/9996_2.png) [@DanGer61](https://community.homey.app/u/DanGer61)\ **Post date:** [March 27, 2020, 2:39pm UTC](https://community.homey.app/t/mqtt-not-working/17437/14 "2020-03-27T14:39:28Z")
![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/f/4/f469ecc3af959ca603d796dd147cd193f2ec9c44.png) ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/d/3/d322a5666d080952c0969eed0bfe10ec40e886d4.png) ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/3/1/31b660a85e3f9cf2b40abaf13047db55da1e1a53.png) ---
**Author:** ![PascalB](https://avatars.discourse-cdn.com/v4/letter/p/dbc845/32.png) [@PascalB](https://community.homey.app/u/PascalB)\ **Post date:** [March 27, 2020, 3:05pm UTC](https://community.homey.app/t/mqtt-not-working/17437/16 "2020-03-27T15:05:32Z")
I don’t see any devices that populate your MQTT explorer? Have you activated broadcast? Also, try to use the topic homie/homey-danger61/DEVICE/onoff/ to set the state with true/false. Then there should be no need for the flow you posted… ---
**Author:** ![DanGer61](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/danger61/32/9996_2.png) [@DanGer61](https://community.homey.app/u/DanGer61)\ **Post date:** [March 27, 2020, 3:39pm UTC](https://community.homey.app/t/mqtt-not-working/17437/17 "2020-03-27T15:39:01Z")
I did a broadcast . ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/0/2/0253daf3e47a36bb346a1cadfaf925eb534511d3.png) ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/6/6/66bdced5762be954a06fa80db401a836c9802a64.png) ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/e/6/e659061a81348e0f63c0e9fa86525dd3777d5edb.png) ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/c/7/c72b471c96483ede6c5774b4fe090ec1cfda9b3d.png) ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/3/4/349497e16a1df532c3774c9352ed2101df0f87b3.png) ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/8/4/84304c746815c0e09482edbcde29265ed50d1afc.png) ---
**Author:** ![DanGer61](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/danger61/32/9996_2.png) [@DanGer61](https://community.homey.app/u/DanGer61)\ **Post date:** [March 27, 2020, 3:41pm UTC](https://community.homey.app/t/mqtt-not-working/17437/18 "2020-03-27T15:41:20Z")
![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/e/9/e9ae1ed8f5aedccf5b8f09b7b3d58e89480a6504.png) ---
**Author:** ![PascalB](https://avatars.discourse-cdn.com/v4/letter/p/dbc845/32.png) [@PascalB](https://community.homey.app/u/PascalB)\ **Post date:** [March 27, 2020, 4:28pm UTC](https://community.homey.app/t/mqtt-not-working/17437/19 "2020-03-27T16:28:36Z")
You should be seeing A LOT more devices. Also, you should be seeing a $SYS topic. So my guess is your settings in MQTT explorer are not correct… Maybe try disabling the certificate check? Otherwise I would advise to try some other MQTT broker, eg Homey app or Mosquitto on Raspberry Pi. ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/6/7/671ed75c85e0c457c6d5bd3153e1bdc235fa4b68.png) ---
**Author:** ![DanGer61](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/danger61/32/9996_2.png) [@DanGer61](https://community.homey.app/u/DanGer61)\ **Post date:** [March 27, 2020, 5:16pm UTC](https://community.homey.app/t/mqtt-not-working/17437/20 "2020-03-27T17:16:56Z")
Ok but when I use te Homey broker what is his IP-adress ? Is this the IP-address of the Homey + port 1883 and can i access the Homey broker from OpenHAB or Home-Assistant. I know i deleted the $SYS topic 🥵 I gonna try ---
**Author:** ![PascalB](https://avatars.discourse-cdn.com/v4/letter/p/dbc845/32.png) [@PascalB](https://community.homey.app/u/PascalB)\ **Post date:** [March 27, 2020, 6:37pm UTC](https://community.homey.app/t/mqtt-not-working/17437/21 "2020-03-27T18:37:28Z")
IP address is the same as your Homey’s, look it up in your router (and while you’re at it, give it a static IP). You can use this broker with other clients too, MQTT is a language which makes that easy. [Next page](https://community.homey.app/t/mqtt-not-working/17437.md?page=2)