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Last modified by Dilisi S on 2025/04/23 19:23
From version 158.1
edited by Dilisi S
on 2025/03/18 03:15
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To version 167.1
edited by Dilisi S
on 2025/03/19 03:36
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Summary

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500 500  
501 501  We use the Mosquitto MQTT client to simulate MQTT messages, acting as a virtual device. First, install the Mosquitto client on your computer from [[this link>>url:https://mosquitto.org/download/]]. The Mosquitto client publishes messages to the MQTT broker (HiveMQ) on a specified MQTT topic. ThingsBoard subscribes to these messages using the same topic.
502 502  
503 -The Mosquitto client publishes messages on the topic v1/devices/[device_name]/telemetry. The [device_name]placeholder can be replaced with any device name, for example, 'S31B-NB'. Then, the MQTT topic would be v1/devices/S31B-NB/telemetry.
503 +The Mosquitto client publishes messages (payloads) on the topic **v1/devices/me/telemetry**. Of course, you can use any topic for testing.
504 504  
505 -On the ThingsBoard side, we configure the MQTT topic subscription as v1/devices/+/telemetry. The + wildcard represents any device name and allows ThingsBoard to automatically create (provision) a device with that name, such as S31B-NB, for example.
505 +(% id="cke_bm_37386S" style="display:none" %) (%%)The MQTT payload format is as follows, which is common for all **~-~-NB** and **~-~-CB** series devices. The **IMEI** field is mandatory and is used to provision a new device with the name assigned to it in ThingsBoard.
506 506  
507 -
508 -**The new device is created the first time the MQTT topic is received. For subsequent MQTT topics with the same device name, no duplicate devices will be created.**
509 -
510 -
511 -For example, if you send two MQTT messages with different device names in the topic:
512 -
513 -1. v1/devices/**S31B-NB**/telemetry
514 -1. v1/devices/**LDS25-NB**/telemetry
515 -
516 -ThingsBoard will create two devices named **S31B-NB** and **LDS25-NB** in the **//Devices//** section.
517 -
518 -
519 -The MQTT payload format is as follows, which is common for all ~-~-NB and ~-~-CB series devices:
520 -
521 521  {{code language="none"}}
522 -{"temperature":10.4, "humidity":85}
508 +{"IMEI": "S31B-NB", "temperature": 27, ......}
523 523  {{/code}}
524 524  
511 +Once ThingsBoard receives this message, it automatically creates (provisions) the device mentioned in the **IMEI**, for example, S31B-NB.
525 525  
513 +
526 526  == 5.2 Sending messages ==
527 527  
528 528  
529 -On the terminal, issue the following MQTT command which simulates the device S31B-NB. The message payload contains the fields temperature and humidity, which hold the values 10.4 and 85, respectively. This payload is also (technically) known as telemetry.
517 +On the terminal, issue the following MQTT command which simulates the device S31B-NB. The message payload contains the fields temperature and humidity, which hold the values S31B-NB and 27, respectively. This payload is also (technically) known as telemetry.
530 530  
531 531  {{code language="none"}}
532 -mosquitto_pub -d -q 1 -h 011731f7928xxxxx.s1.eu.hivemq.cloud -p 8883 -t "tb/mqtt-integration-tutorial/sensors/S31B-NB/telemetry" -u "xxxxx" -P "xxxxx" -m '{"temperature":10.4, "humidity":85}'
520 +mosquitto_pub -d -q 1 -h 011731f7928xxxxx.s1.eu.hivemq.cloud -p 8883 -t "v1/devices/me/telemetry" -u "xxxxx" -P "xxxxx" -m '{"IMEI": "S31B-NB", "temperature": 27}'
533 533  {{/code}}
534 534  
535 535  If the integration was performed without errors, the status of the integration changes to 'Active' after the first telemetry transmission.
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541 541  Also, a new device named **S31B-NB** will appear under **//Entities -> Devices -> All//**. This means the first MQTT message triggers ThingsBoard to provision a device named **S31B-NB**.
542 542  
543 543  
544 -[[image:device-provision-1.png]]
532 +[[image:new-device.png]]
545 545  
546 546  
547 -Click on the device S31B-NB on the devices list to see its details.
535 +== 5.3 Viewing messages ==
548 548  
549 -Then go to the **Latest telemetry** tab.
550 550  
551 -You can see the fields temperature and humidity with the values you previously sent using the MQTT message.
552 552  
539 +Go back to the **Integrations** page.
553 553  
554 -[[image:telemetry-1.png]]
541 +Click on the **MQTT integration NB/CB** in the **Integrations** page to see its details.
555 555  
543 +Click on the **Edit** button (//**pen icon**//).
556 556  
557 -Now, change the values of the fields and send the MQTT message again. For example, set temperature to 20 and humidity to 70. Observe how the values update in //Latest Telemetry//.
545 +Click on the **Disabled** button in the upper-right corner.
558 558  
547 +Turn on the **All messages (15 min)** option. This will enable displaying all messages in the **Events** tab. This setting will expire in 15 minutes, and you will need to repeat the same steps if you want to view the messages in the Events tab later.
559 559  
560 -[[image:telemetry-2.png]]
549 +Click on the **Apply** button.
561 561  
551 +Then click on the **Apply changes** (//**tick icon**//) button.
562 562  
563 -Let's provision the second device named **LDS25-NB **with initial telemetry. Use the following MQTT message.
564 564  
554 +[[image:Screenshot 2025-03-18 at 09.23.10.png]]
565 565  
566 -{{code language="none"}}
567 -mosquitto_pub -d -q 1 -h 011731f7928541588a6cdfbbedfc63f4.s1.eu.hivemq.cloud -p 8883 -t "tb/mqtt-integration-tutorial/sensors/LDS25-NB/telemetry" -u "pradeeka" -P "Kalpani123@" -m '{"temperature":11, "humidity":87}'
568 -{{/code}}
569 569  
570 -Now, refresh the **Devices** page, and you will see the second device, **LDS25-NB**, which was recently provisioned.
557 +Now go to the **Events** tab.
571 571  
559 +Select the Event type as **Debug** from the dropdown list.
572 572  
573 -[[image:device-provision-2.png]]
561 +Now you can see all the Uplink messages you are simulating through the MQTT broker. The status should
574 574  
575 575  
564 +[[image:Screenshot 2025-03-16 at 18.38.59.png]]
565 +
566 +
567 +Then click on the **three dots (...)** in the **Message** column. You can see the uplink message's **payload** in the **Message** window.
568 +
569 +
570 +[[image:Screenshot 2025-03-16 at 18.39.12.png]]
571 +
572 +
573 +Now, you have successfully tested your integration with a simulated uplink payload and verified that it is received by ThingsBoard, and the device is provisioned.
574 +
575 +
576 576  = 6. Creating a Dashboard =
577 577  
578 578  ThingsBoard **Dashboards** provide a powerful way to visualize and monitor real-time and historical data from connected devices. They allow users to create interactive, customizable panels displaying telemetry data, device status, and other key metrics. With a variety of widgets, including charts, maps, and tables, dashboards help users gain insights, track trends, and manage IoT deployments efficiently.
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670 670  * **AT+SERVADDR=<Broker address, Port>**
671 671  
672 672  Test your uplink by pressing the ACT button for 1 second.
673 +
674 +
675 +
676 +
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