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Last modified by Dilisi S on 2025/04/23 19:23
From version 176.1
edited by Dilisi S
on 2025/03/26 20:27
Change comment: Mar 26 edits - part 1
To version 16.1
edited by Dilisi S
on 2025/03/03 02:45
Change comment: Mar 2 edits - part 2

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... ... @@ -6,216 +6,47 @@
6 6  Draft Document
7 7  {{/warning}}
8 8  
9 += Introduction =
9 9  
11 +This document guides you on integrating Dragino -NB and -CB series devices with ThingsBoard. For this guide, we use ThingsBoard Cloud, which is one of the ThingsBoard versions that allows you to try it for free.
10 10  
11 11  
12 -= 1. Introduction =
14 += Add New Device =
13 13  
16 +In the left navigation, click **Entities** and then click **Devices**.
14 14  
15 -This document guides you on integrating Dragino **-NB** and **-CB** series devices data with ThingsBoard. For this guide, we use ThingsBoard Cloud, which is one of the ThingsBoard versions that allows you to try it for free.
16 16  
17 -The **NB series** devices end with the suffix **-NB**, and the **CB series** devices end with the suffix **-CB**. For example, **S31B-NB** is an **NB device**, and **S31-CB** is a **CB device**.
19 +[[image:ThingsBoard-Device.png]]
18 18  
19 19  
20 -= 2. Prerequisites =
22 +On the ‘**Devices**’ page, click on the ‘**+**’ button, and then click on the ‘**Add new device**’ from the dropdown menu.
21 21  
22 -To complete this tutorial, you need to have the following:
23 23  
24 -* ThingsBoard cloud account
25 -* MQTT Broker (public or private) such as,
26 -** **[[HiveMQ Cloud>>https://www.hivemq.com]] - You can create a free account to try it or subscribe for a paid account. - We use HiveMQ Cloud as the MQTT broker to build example in this tutorial.**
27 -** [[emqx>>https://www.emqx.com/zh/mqtt/public-mqtt5-broker]] - The public MQTT server is only used for MOTT learning and testing, and should not be used in the production environment.
28 -** [[lns1.thingseye.io>>http://lns1.thingseye.io/]] - This is Dragino's MQTT broker, which requires a CA certificate to use.
25 +[[image:ThingsBoard-add-new-device.png||height="279" width="500"]]
29 29  
30 -== 2.1 ThingsBoard Cloud ==
31 31  
32 32  
33 -Go to [[https:~~/~~/thingsboard.io/>>https://thingsboard.io/]]
29 += Data Converters =
34 34  
35 -Click on the **Try it now**.
36 36  
32 +== Uplink ==
37 37  
38 -[[image:thingsboard-1.png]]
34 +In the left navigation, click ‘Integrations center’, and then click ‘Data converters’.
39 39  
40 40  
41 -Select either the **North America** or **Europe** region. Here, we use the Europe region.
37 +[[image:ThingsBoard-Data-Converters.png]]
42 42  
43 -[[image:thingsboard-2.png]]
44 44  
40 +On the ‘Data converters’ page, click on the ‘+’ button, and then click on the ‘Create new converter’ from the dropdown menu.
45 45  
46 -You can sign up with your **Google**, **GitHub**, **Facebook**, or **Apple** account. If not you can create an account with providing your **name**, **email address** and a **password**.
47 47  
48 -Click on the **Sign up** button.
43 +[[image:ThingsBoard-new-data-converter.png||height="282" width="500"]]
49 49  
50 -[[image:thingsboard-3.png||height="651" width="500"]]
51 51  
46 +The ‘Add data converter’ window will appear. Name it ‘**UDP Uplink Converter NB/CB**’ and select the Type as ‘Uplink’.
52 52  
53 -You will be navigated to the following page.
48 +Click on the ‘JavaScript’ button. Now copy and paste the following script to the ‘Decoder function’ section:
54 54  
55 -[[image:thingsboard-5.png||height="109" width="500"]]
56 -
57 -
58 -simultaneously, you will receive an email to confirm your email address. Click on the **Activate Your Account** button.
59 -
60 -
61 -[[image:thingsboard-4.png||height="249" width="500"]]
62 -
63 -
64 -Now losing to the account using your credentials:
65 -
66 -
67 -[[image:thingsboard-6.png||height="244" width="500"]]
68 -
69 -
70 -== 2.2 HiveMQ Cloud ==
71 -
72 -=== 2.2.1 HiveMQ Cloud ===
73 -
74 -
75 -Go to [[https:~~/~~/www.hivemq.com>>https://www.hivemq.com]]
76 -
77 -Click on the **Start Free** button.
78 -
79 -[[image:hivwmq-1.png]]
80 -
81 -
82 -Click on the **Sign Up FREE Now** button in the **HIVEMQ CLOUD** section.
83 -
84 -[[image:hivemq-2.png]]
85 -
86 -
87 -Click on the **Sign Up** button.
88 -
89 -You can sign up with HiveMQ using your **GitHub**, **Google**, or **LinkedIn** account.
90 -
91 -If not, provide your **email address** and a **password** to create an account by clicking on the **Sign Up** button.
92 -
93 -
94 -[[image:hivemq-3.png]]
95 -
96 -
97 -You will receive an email to verify your email address. Click on the **Confirm my account** button.
98 -
99 -
100 -[[image:hivemq-4.jpg||height="889" width="400"]]
101 -
102 -
103 -You will be redirected to a page asking you to complete your profile. Once done, click the **Continue** button.
104 -
105 -
106 -[[image:hivemq-5.png||height="655" width="700"]]
107 -
108 -
109 -Select the CloudMQ Cloud plan you need. For testing purposes, select the **Serverless FREE** plan by clicking on the **Create Serverless Cluster** button.
110 -
111 -
112 -[[image:hivemq-6.png]]
113 -
114 -
115 -You will be navigated to the **Your Clusters** page. Click on the **Manage Cluster** button.
116 -
117 -[[image:hivemq-7.png]]
118 -
119 -
120 -In your cluster page, you can find some useful parameters you need to create a MQTT connection.
121 -
122 -**URL**: This is the host name. Click on the copy button to copy it.
123 -
124 -**Port**: 8883
125 -
126 -
127 -Click on the **Getting Started** tab to setup the username and the password as the connection credentials.
128 -
129 -
130 -[[image:hivemq-8.png]]
131 -
132 -
133 -In the '**Create Connection Credentials**' section, provide a **username** and **password**, then click the **Add** button.
134 -
135 -
136 -[[image:hivemq-9.png]]
137 -
138 -
139 -
140 -If everything is successful, you will see the following message.
141 -
142 -
143 -[[image:hivemq-10.png||height="206" width="500"]]
144 -
145 -
146 -You will need these MQTT connection parameters when configuring the MQTT integration in the '**Add Integration**' section.
147 -
148 -
149 -=== 2.2.2 emqx ===
150 -
151 -
152 -The [[emqx>>https://www.emqx.com/zh/mqtt/public-mqtt5-broker]] public MQTT server is only used for MOTT learning and testing, and should not be used in the production environment.
153 -
154 -
155 -[[image:emqx.png||height="420" width="500"]]
156 -
157 -
158 -=== 2.2.3 Ins1.thingseye.io ===
159 -
160 -[[lns1.thingseye.io>>http://lns1.thingseye.io/]] is the Dragino's MQTT broker, which requires a CA certificate file, Certificate file, and the Private key file to use.
161 -
162 -If customers need to use this MQTT connection with ThingsBoard, they need to contact the TE team to obtain three license files.
163 -
164 -[[image:ins1.png||height="310" width="500"]]
165 -
166 -
167 -(% class="wikigeneratedid" %)
168 -= 3. Creating Devices =
169 -
170 -
171 -First, you need to create devices in ThingsBoard to represent your physical devices. For example, you can name it **Device A**, and the second device could be **Device B** or any name you prefer. The device name should be unique within the **Devices** space.
172 -
173 -
174 -In the left navigation, click Entities -> Devices.
175 -
176 -Click the **Add Device** button (the button with the **+** sign), and from the dropdown menu, click **Add new device**.
177 -
178 -In the **Add new device** dialog box, enter the device name in the **Name** text box. For example, we will use **Device A**.
179 -
180 -Click the **Add** button.
181 -
182 -Skip the **connectivity testing** by clicking the **Close** button.
183 -
184 -The device is created and listed on the **Devices** page. Note that its initial state is **Inactive** because it has not received any data yet.
185 -
186 -
187 -= 4. Data Converters =
188 -
189 -
190 -In **ThingsBoard**, **Data Converters** are components used to transform incoming or outgoing data between different formats, typically to convert raw telemetry data from devices into a structured format that ThingsBoard can understand, or vice versa.
191 -
192 -
193 -== 4.1 Uplink ==
194 -
195 -
196 -In the left navigation, click **Integrations center**, and then click **Data converters**.
197 -
198 -
199 -[[image:data-converters-list-empty.png]]
200 -
201 -
202 -On the **Data converters** page, click on the ‘**+**’ button, and then click on the **Create new converter** from the dropdown menu.
203 -
204 -
205 -
206 -[[image:create-new-converter-menu.png||height="259" width="500"]]
207 -
208 -
209 -The **Add data converter** window will appear. Name it ‘**MQTT Uplink Converter NB/CB**’ and select the Type as **Uplink**.
210 -
211 -Click on the **JavaScript** button.
212 -
213 -Delete the default decoder function in the code editor. Now copy and paste the following decoder function written in **JavaScript** in to the **code editor**. This decoder function is compatible for both NB and CB series devices.
214 -
215 -{{info}}
216 -Please note that the value assigned to the IMEI field in the payload will be used by ThingsBoard to create a device on the platform with the same name.
217 -{{/info}}
218 -
219 219  {{code language="JavaScript"}}
220 220  //Version: 0.1
221 221  // decode payload to string
... ... @@ -336,313 +336,138 @@
336 336  }
337 337  
338 338  return result;
170 +
339 339  {{/code}}
340 340  
173 +Click on the ‘Add’ button.
341 341  
342 -Click on the **Add** button.
343 343  
176 +[[image:ThingsBoard-add-data-converter-uplink.png||width="500"]]
344 344  
345 -[[image:mqtt-uplink.png||width="500"]]
346 346  
179 +The uplink data converter is added to ThingsBoard and appears on the ‘Data Converters’ page
347 347  
348 348  
349 -You should see that the newly added **MQTT Uplink converter **NB/CB is listed on the **Data Converters** page.
182 +== Downlink ==
350 350  
184 +On the ‘Data converters’ page, click on the ‘+’ button, and then click on the ‘Create new converter’ from the dropdown menu.
351 351  
352 -[[image:data-converter-list-showing-uplink-dc.png]]
353 353  
187 +[[image:ThingsBoard-new-data-converter.png||height="282" width="500"]]
354 354  
355 -= 5. Add Integration =
356 356  
190 +The ‘**Add data converter**’ window will appear. Name it ‘**UDP Downlink Converter NB/CB**’ and select the Type as ‘**Downlink**’.
357 357  
358 -In the left navigation, click **Integrations center**, and then click **Integrations**.
192 +Click on the ‘**JavaScript**’ button. Now copy and paste the following script to the ‘**Encoder function**’ section:
359 359  
360 360  
361 -[[image:integrations-list-empty.png]]
195 +{{code language="JavaScript"}}
196 +function hexToBase64(hexString) {
197 + // 将16进制字符串两个字符转换为一个字节
198 + var bytes = hexString.match(/.{2}/g);
199 + // 对每个字节进行解析，并转换为对应的字符
200 + var binaryString = bytes.map(function(byte) {
201 + return String.fromCharCode(parseInt(byte, 16));
202 + }).join('');
203 +
204 + // 使用btoa进行base64编码
205 + return btoa(binaryString);
206 +}
362 362  
208 +// Result object with encoded downlink payload
209 +var result = {
210 + // downlink data content type: JSON, TEXT or BINARY (base64 format)
211 + contentType: "BINARY",
363 363  
364 -On the **Integrations** page, click on the '**+**' button.
213 + // downlink data
214 + data:hexToBase64(metadata.shared_value)
365 365  
216 + // Optional metadata object presented in key/value format
217 + //metadata: {}
366 366  
367 -The **Add integration** window appears.
219 +};
368 368  
369 -In the **Add integration** window, configure the following settings:
221 +return result;
222 +{{/code}}
370 370  
371 371  
372 -**Basic settings:**
373 -
374 -* **Integration type**: MQTT
375 -* **Name**: MQTT integration NB/CB
376 -* **Enable integration**: YES
377 -* **Allows create devices or assets**: YES
378 -
379 -Click **Next** button.
380 -
381 -
382 -[[image:add-integration-basic-settings.png||height="511" width="500"]]
383 -
384 -
385 -**Uplink data converter:**
386 -
387 -* Click on the **Select existing** button.
388 -* **Uplink data converter**: Select **MQTT Uplink Converter NB/CB **from the dropdown list.
389 -
390 -Click **Next** button.
391 -
392 -
393 -[[image:add-integration-uplink-data-converter.png||height="511" width="500"]]
394 -
395 -
396 -**Downlink data converter:**
397 -
398 -Dragino NB/CB devices don't require a downlink data converter to decode their payloads, so you can skip this step.
399 -
400 -* Click on the **Skip **button in the Downlink data converter section.
401 -
402 -Click **Skip** button.
403 -
404 -
405 -[[image:integration-dl-skip.png||height="511" width="500"]]
406 -
407 -
408 -
409 -**Connection:**
410 -
411 -* **Host**: Cluster URL (Eg. 011731f7xxxxxxxxxxxfbbedfc63f4.s1.eu.hivemq.cloud)
412 -* **Port**: 8883
413 -* **Credentials**: Basic
414 -* **Enable SSL**: YES
415 -* **Username**: Username (from your HiveMQ Cloud Cluster with your credentials)
416 -* **Password:** Password (from your HiveMQ Cloud Cluster with your credentials)
417 -* **Topic: v1/devices/me/telemetry** (The topic can be anything; you can even use just the device name. For example, you can use your device name here, such as S31B-NB.)
418 -* **QoS:** 0-At most once
419 -
420 -
421 -[[image:add-integration-connection.png||height="511" width="500"]]
422 -
423 -
424 -Click on the **Advanced settings** button.
425 -
426 -* **Clean session:** YES
427 -* **Retained**: YES
428 -
429 -[[image:add-integration-connection-advanced-settings.png||height="510" width="500"]]
430 -
431 -
432 -Click on the **Check connection** button to verify the MQTT connection using the provided parameters.
433 -
434 -
435 -[[image:check-connection.png||height="83" width="300"]]
436 -
437 -
438 -If the connection is successful, you will see the **Connected** message. If not, check your connection parameters again.
439 -
440 -
441 -[[image:connection-success.png||height="511" width="500"]]
442 -
443 -
444 444  Click on the **Add** button.
445 445  
446 -You should see that the newly added integration is listed on the **Integrations** page.
447 447  
448 -Since we haven't received data from a device yet, the integration **Status** is shown as **Pending.**
228 +[[image:ThingsBoard-add-data-converter-downlink.png||height="532" width="500"]]
449 449  
450 450  
451 -[[image:new-integration-pending.png]]
231 += Add Integration =
452 452  
233 +In the left navigation, click ‘Integrations center’, and then click ‘Integrations’.
453 453  
454 -= 6. Verifying the receipt of data from virtual devices =
235 +On the ‘Integrations’ page, click on the “+” button.
455 455  
456 456  
457 -== 6.1 How does it work? ==
238 +[[image:ThingsBoard-add-integration.png]]
458 458  
459 459  
460 -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.
241 +The ‘Add integration’ window appears.
461 461  
462 -The Mosquitto client publishes messages (payloads) on the topic **v1/devices/me/telemetry**. Of course, you can use any topic for testing.
243 +In the Add Integration window, configure the following settings:
463 463  
464 -(% 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.
245 +**Basic settings:**
465 465  
466 -{{code language="none"}}
467 -{"IMEI": "S31B-NB", "temperature": 27, ......}
468 -{{/code}}
247 +* **Integration type**: UDP
248 +* **Name**: UDP Integration NB/CB
469 469  
470 -Once ThingsBoard receives this message, it automatically creates (provisions) the device mentioned in the **IMEI**, for example, S31B-NB.
250 +Click **Next** button.
471 471  
472 472  
473 -== 5.2 Sending messages ==
253 +[[image:add-integration-basic-settings.png||height="511" width="500"]]
474 474  
475 475  
476 -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.
256 +**Uplink data converter:**
477 477  
478 -{{code language="none"}}
479 -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}'
480 -{{/code}}
258 +* Click on the ‘**Select existing**’ button.
259 +* Uplink data converter: Select ‘**UDP Uplink Converter NB/CB**’ from the dropdown list.
481 481  
482 -If the integration was performed without errors, the status of the integration changes to 'Active' after the first telemetry transmission.
261 +Click **Next** button.
483 483  
484 484  
485 -[[image:integration-active.png]]
264 +[[image:add-integration-uplink-data-converter.png||height="511" width="500"]]
486 486  
487 487  
488 -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**.
267 +**Downlink data converter:**
489 489  
269 +* Click on the ‘**Select existing**’ button.
270 +* Downlink data converter: Select ‘**UDP Downlink Converter NB/CB**’ from the dropdown list.
490 490  
491 -[[image:new-device.png]]
492 492  
273 +Click **Next** button.
493 493  
494 -== 6.3 Viewing messages ==
495 495  
276 +[[image:add-integration-downlink-data-converter.png||height="512" width="500"]]
496 496  
497 -Go back to the **Integrations** page.
498 498  
499 -Click on the **MQTT integration NB/CB** in the **Integrations** page to see its details.
279 +**Connection:**
500 500  
501 -Click on the **Edit** button (//**pen icon**//).
281 +**Port**: 11582
502 502  
503 -Click on the **Disabled** button in the upper-right corner.
283 +**Size of the buffer for inbound socket (in KB)**: 64
504 504  
505 -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.
285 +**Cache Size**: 10000000
506 506  
507 -Click on the **Apply** button.
287 +**Cache time to live in minutes**: 1440
508 508  
509 -Then click on the **Apply changes** (//**tick icon**//) button.
510 510  
290 +Copy the two keys, **Integration key** and **Integration secret** into a text editor, as you will need them in the section ‘xxxxx’.
511 511  
512 -[[image:Screenshot 2025-03-18 at 09.23.10.png]]
513 -
514 -
515 -Now go to the **Events** tab.
516 -
517 -Select the Event type as **Debug** from the dropdown list.
518 -
519 -Now you can see all the Uplink messages you are simulating through the MQTT broker. The status should be OK if there is no errors in your integration.
520 -
521 -
522 -[[image:Screenshot 2025-03-16 at 18.38.59.png]]
523 -
524 -
525 -Then click on the **three dots (...)** in the **Message** column. You can see the uplink message's **payload** in the **Message** window.
526 -
527 -
528 -[[image:Screenshot 2025-03-16 at 18.39.12.png]]
529 -
530 -
531 -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.
532 -
533 -
534 -= 7. Creating a Dashboard =
535 -
536 -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.
537 -
538 -
539 -This section guides you on how to create a dashboard to display temperature and humidity data from the device on a time-series chart. You may also use other widgets in ThingsBoard to display data according to your requirements.
540 -
541 -
542 -First simulate a few messages using MQTT. This time, we have added the 'humidity' field to the payload. Eg:
543 -
544 -{{code language="none"}}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": 22, "humidity":80}'{{/code}}
545 -
546 -
547 -In **ThingsBoard**, from the left navigation menu, click **Dashboards**. Then, click the **+** button and select **Create new dashboard** from the dropdown menu.
548 -
549 -
550 -[[image:dashboard-1.png]]
551 -
552 -
553 -In the **Title** text box, enter **NB/CB Test Dashboard** as the title of the dashboard.
554 -
555 555  Click on the **Add** button.
556 556  
557 557  
558 -[[image:dashboard-2.png||height="526" width="500"]]
295 +[[image:add-integration-connection.png||height="511" width="500"]]
559 559  
560 560  
561 -Click on the **Add widget / Add new widget** button.
562 562  
299 += Verifying the receipt of data from the device =
563 563  
564 -[[image:dashboard-3.png]]
301 +Connect **S31B-NB** to transfer information. If the integration was performed without errors, after the transmission of the first telemetry, a new device with the name “xxxxx” will appear in the Devices → All. Also, you can verify the input and output data, respectively, before and after conversion in Data converters → UDP Uplink Converter NB/CB → Events.
565 565  
566 566  
567 -In the **Select widgets bundle** window, click **Charts**.
568 -
569 -
570 -[[image:dashboard-4.png||height="537" width="700"]]
571 -
572 -
573 -
574 -In the **Charts: select widget** window, click **Time series chart**.
575 -
576 -
577 -[[image:dashboard-5.png||height="525" width="700"]]
578 -
579 -
580 -Configure the **Time series chart** widget as follows:
581 -
582 -* **Datasource** - select S31B-NB device you provisioned.
583 -* **Series**:
584 -** **temperature** - you can see this key by default.
585 -** **humidity** - Click **Add series** button. Then add the **humidity** for the key and then type **%** as its unit.
586 -* Click on the **Add** button.
587 -
588 -[[image:timeseries-1.png||height="491" width="700"]]
589 -
590 -
591 -The time-series chart will appear in edit mode. Resize it by clicking and dragging the lower-right corner.
592 -
593 -Click the **Save** button to add the widget to the dashboard.
594 -
595 -
596 -[[image:timeseries-3.png||height="347" width="700"]]
597 -
598 -
599 -Now send the following MQTT messages from the terminal to simulate the data.
600 -
601 -
602 -{{code language="none"}}
603 -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": 22, "humidity":70}'
604 -
605 -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, "humidity":72}'
606 -
607 -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": 19, "humidity":80}'
608 -
609 -{{/code}}
610 -
611 -The chart will update with the values in realtime, as shown in the below image.
612 -
613 -
614 -[[image:timeseries-4.png||height="316" width="700"]]
615 -
616 -
617 -= 8. Configure NB-IoT Sensor =
618 -
619 -
620 -Now, let's experiment with sending data to ThingsBoard using a real NB-IoT device. For example, we will use the **TS01-NB**.
621 -
622 -First, configure the NB-IoT device with the necessary MQTT settings using AT commands. Below is a list of AT commands you can use.
623 -
624 -
625 -**AT Commands**
626 -
627 -* **AT+PRO=3,3    **~/~/ Use MQTT to connect to ThingsBoard. Payload Type set to 3.
628 -* **AT+SUBTOPIC=<MQTT subscribe topic> Eg: TS01-NB**
629 -* **AT+PUBTOPIC=<MQTT publish topic> Eg: TS01-NB**
630 -* **AT+CLIENT=null**
631 -* **AT+UNAME=<MQTT Username>**
632 -* **AT+PWD=<MQTT Password>**
633 -* **AT+SERVADDR=<Broker address, Port>**
634 -
635 -Test your uplink by pressing the ACT button for 1 second.
636 636  
637 -
638 -
639 -The following image shows the uplink payload of a real Dragino device. The publish topic is **TS01-NB**, and the device name is **861275077962896**, which is represented by the **IMEI**.
640 -
641 -{{info}}
642 -The ThingsBoard uses the device's IMEI number included in the payload to create a device in the Devices section.
643 -{{/info}}
644 -
645 -[[image:image-4.png]]
646 -
647 -
648 -
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