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Last modified by Dilisi S on 2025/04/23 19:23
From version 120.1
edited by Dilisi S
on 2025/03/08 20:25
Change comment: Uploaded new attachment "hivemq-10.png", version {1}
To version 192.1
edited by Dilisi S
on 2025/03/27 23:20
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Summary

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... ... @@ -21,13 +21,57 @@
21 21  
22 22  To complete this tutorial, you need to have the following:
23 23  
24 -* ThingsBoard cloud account -
25 -* HiveMQ Cloud account
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.
26 26  
30 +== 2.1 ThingsBoard Cloud ==
27 27  
28 -== 2.1 HiveMQ Cloud ==
29 29  
33 +Go to [[https:~~/~~/thingsboard.io/>>https://thingsboard.io/]]
30 30  
35 +Click on the **Try it now**.
36 +
37 +
38 +[[image:thingsboard-1.png]]
39 +
40 +
41 +Select either the **North America** or **Europe** region. Here, we use the Europe region.
42 +
43 +[[image:thingsboard-2.png]]
44 +
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 +
48 +Click on the **Sign up** button.
49 +
50 +[[image:thingsboard-3.png||height="651" width="500"]]
51 +
52 +
53 +You will be navigated to the following page.
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 +
31 31  Go to [[https:~~/~~/www.hivemq.com>>https://www.hivemq.com]]
32 32  
33 33  Click on the **Start Free** button.
... ... @@ -80,152 +80,179 @@
80 80  **Port**: 8883
81 81  
82 82  
83 -Click on the **Getting Started** tab to setup the username and the password.
127 +Click on the **Getting Started** tab to setup the username and the password as the connection credentials.
84 84  
85 85  
86 86  [[image:hivemq-8.png]]
87 87  
88 88  
133 +In the '**Create Connection Credentials**' section, provide a **username** and **password**, then click the **Add** button.
89 89  
90 -= 2. Data Converters =
91 91  
136 +[[image:hivemq-9.png]]
92 92  
93 -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.
94 94  
95 95  
96 -== 2.1 Uplink ==
140 +If everything is successful, you will see the following message.
97 97  
98 98  
99 -In the left navigation, click **Integrations center**, and then click **Data converters**.
143 +[[image:hivemq-10.png||height="206" width="500"]]
100 100  
101 101  
146 +You will need these MQTT connection parameters when configuring the MQTT integration in the '**Add Integration**' section.
102 102  
103 -[[image:data-converters-list-empty.png]]
104 104  
149 +=== 2.2.2 emqx ===
105 105  
106 -On the **Data converters** page, click on the ‘**+**’ button, and then click on the **Create new converter** from the dropdown menu.
107 107  
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.
108 108  
109 109  
110 -[[image:create-new-converter-menu.png||height="259" width="500"]]
155 +[[image:emqx.png||height="420" width="500"]]
111 111  
112 112  
113 -The **Add data converter** window will appear. Name it ‘**MQTT Uplink Converter NB/CB**’ and select the Type as **Uplink**.
158 +=== 2.2.3 Ins1.thingseye.io ===
114 114  
115 -Click on the **TBEL** button if not selected it by default. Delete the existing decoder function in the code editor. Now copy and paste the following decoder function written in **TBEL (ThingsBoard Expression Language)** in to the **code editor**. This decoder function is compatible for both NB and CB series devices.
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.
116 116  
117 -{{code language="JavaScript"}}
118 -/** Decoder **/
162 +If customers need to use this MQTT connection with ThingsBoard, they need to contact the TE team to obtain three license files.
119 119  
120 -// decode payload to string
121 -var payloadStr = decodeToString(payload);
122 -var data = JSON.parse(payloadStr);
164 +[[image:ins1.png||height="310" width="500"]]
123 123  
124 -var deviceName = metadata.topic.split("/")[3];
125 -// decode payload to JSON
126 -var deviceType = 'sensor';
127 127  
128 -// Result object with device attributes/telemetry data
129 -var result = {
130 - deviceName: deviceName,
131 - deviceType: deviceType,
132 - attributes: {
133 - integrationName: metadata['integrationName'],
134 - },
135 - telemetry: {
136 - temperature: data.temperature,
137 - humidity: data.humidity,
138 - }
139 -};
167 += 3. Creating Devices =
140 140  
141 -/** Helper functions 'decodeToString' and 'decodeToJson' are already built-in **/
142 142  
143 -return result;
144 -{{/code}}
170 +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.
145 145  
146 146  
147 -Click on the **Add** button.
173 +In the left navigation, click Entities -> Devices.
148 148  
175 +Click the **Add Device** button (the button with the **+** sign), and from the dropdown menu, click **Add new device**.
149 149  
177 +In the **Add new device** dialog box, enter the device name in the **Name** text box. For example, we will use **Device A**.
150 150  
151 -[[image:add-uplink-data-converter.png||height="529" width="500"]]
179 +Click the **Add** button.
152 152  
181 +Skip the **connectivity testing** by clicking the **Close** button.
153 153  
154 -You should see that the newly added **MQTT Uplink converter **NB/CB is listed on the **Data Converters** page.
183 +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.
155 155  
156 -[[image:data-converter-list-showing-uplink-dc.png]]
157 157  
186 += 4. Data Converters =
158 158  
159 159  
160 -== 3.2 Downlink ==
189 +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.
161 161  
162 162  
192 +== 4.1 Uplink ==
193 +
194 +
195 +In the left navigation, click **Integrations center**, and then click **Data converters**.
196 +
197 +
198 +[[image:data-converters-list-empty.png]]
199 +
200 +
163 163  On the **Data converters** page, click on the ‘**+**’ button, and then click on the **Create new converter** from the dropdown menu.
164 164  
165 165  
166 -[[image:create-new-converter-menu.png||width="500"]]
167 167  
205 +[[image:create-new-converter-menu.png||height="259" width="500"]]
168 168  
169 169  
170 -The **Add data converter** window will appear. Name it ‘**MQTT Downlink Converter NB/CB**’ and select the Type as **Downlink**.
208 +The **Add data converter** window will appear.
171 171  
172 -Click on the **TBEL** button if not selected it by default. Now copy and paste the following encoder function written in **TBEL (ThingsBoard Expression Language)** in to the **code editor**. This encoder function is compatible for both NB and CB series devices.
210 +Let's create an uplink data converter for the device named '**Device A**'. Name it ‘**MQTT Uplink Converter - Device A**’ and select the Type as **Uplink**.
173 173  
212 +Click on the **TBEL** button if it has not been selected by default.
174 174  
175 -{{code language="JavaScript"}}
176 -// Encode downlink data from incoming Rule Engine message
214 +Modify the default TBEL function to match with your device as described below:
177 177  
178 -// msg - JSON message payload downlink message json
179 -// msgType - type of message, for ex. 'ATTRIBUTES_UPDATED', 'POST_TELEMETRY_REQUEST', etc.
180 -// metadata - list of key-value pairs with additional data about the message
181 -// integrationMetadata - list of key-value pairs with additional data defined in Integration executing this converter
182 182  
183 -/** Encoder **/
217 +* Uncomment** line 11**:
184 184  
185 -var data = {};
219 +//var data = decodeToJson(payload)//
186 186  
187 -// Process data from incoming message and metadata
188 188  
189 -data.tempFreq = msg.temperatureUploadFrequency;
190 -data.humFreq = msg.humidityUploadFrequency;
222 +* **Line 13**: Assign your device name to the **deviceName** field. - We used **Device A** as it is to match with our device, **Device A **in the Devices section.
223 +* From **line 38**: Modify the telemetry section to allow parsed data to be assigned to the fields.
191 191  
192 -data.devSerialNumber = metadata['ss_serialNumber'];
225 +//telemetry: {
226 + temperature: data.temperature,
227 + humidity: data.humidity,
228 + rawData: payloadStr
229 + }//
193 193  
194 -// Result object with encoded downlink payload
195 -var result = {
196 196  
197 - // downlink data content type: JSON, TEXT or BINARY (base64 format)
198 - contentType: "JSON",
232 +The modified uplink decoder function to match with **Device A** is shown below.
199 199  
200 - // downlink data
201 - data: JSON.stringify(data),
234 +{{code language="JavaScript"}}
235 +// Decode an uplink message from a buffer
236 +// payload - array of bytes
237 +// metadata - key/value object
202 202  
203 - // Optional metadata object presented in key/value format
204 - metadata: {
205 - topic: metadata['deviceType']+'/'+metadata['deviceName']+'/upload'
206 - }
239 +/** Decoder **/
207 207  
241 +// decode payload to string
242 +var payloadStr = decodeToString(payload);
243 +
244 +// decode payload to JSON
245 +var data = decodeToJson(payload);
246 +
247 +var deviceName = 'Device A';
248 +var deviceType = 'thermostat';
249 +var customerName = 'Customer C';
250 +var groupName = 'thermostat devices';
251 +var manufacturer = 'Example corporation';
252 +// use assetName and assetType instead of deviceName and deviceType
253 +// to automatically create assets instead of devices.
254 +// var assetName = 'Asset A';
255 +// var assetType = 'building';
256 +
257 +// Result object with device/asset attributes/telemetry data
258 +var result = {
259 +// Use deviceName and deviceType or assetName and assetType, but not both.
260 + deviceName: deviceName,
261 + deviceType: deviceType,
262 +// assetName: assetName,
263 +// assetType: assetType,
264 +// customerName: customerName,
265 + groupName: groupName,
266 + attributes: {
267 + model: 'Model A',
268 + serialNumber: 'SN111',
269 + integrationName: metadata['integrationName'],
270 + manufacturer: manufacturer
271 + },
272 + telemetry: {
273 + temperature: data.temperature,
274 + humidity: data.humidity,
275 + rawData: payloadStr
276 + }
208 208  };
209 209  
279 +/** Helper functions 'decodeToString' and 'decodeToJson' are already built-in **/
280 +
210 210  return result;
211 211  {{/code}}
212 212  
213 213  
214 -Click on the **Add** button.
285 +Once you modify the decoder function, click on the **Add** button.
215 215  
216 216  
217 217  
218 -[[image:add-downlink-data-converter.png||height="529" width="500"]]
289 +[[image:ul-data-converter-device-a.png||height="524" width="500"]]
219 219  
220 220  
221 -You should see that the newly added **MQTT Downlink** Converter NB/CB is listed on the **Data Converters** page.
292 +You should see that the newly added **MQTT Uplink converter **NB/CB is listed on the **Data Converters** page.
222 222  
223 223  
224 -[[image:data-converters-list.png]]
295 +[[image:ul-data-converter-added.png||height="257"]]
225 225  
226 226  
227 227  
228 -= 3. Add Integration =
299 += 5. Add Integration =
229 229  
230 230  
231 231  In the left navigation, click **Integrations center**, and then click **Integrations**.
... ... @@ -245,7 +245,7 @@
245 245  **Basic settings:**
246 246  
247 247  * **Integration type**: MQTT
248 -* **Name**: MQTT integration NB/CB
319 +* **Name**: MQTT integration - Device A
249 249  * **Enable integration**: YES
250 250  * **Allows create devices or assets**: YES
251 251  
... ... @@ -252,10 +252,11 @@
252 252  Click **Next** button.
253 253  
254 254  
326 +[[image:add-integration-basic-settings.png||height="504" width="500"]]
255 255  
256 -[[image:add-integration-basic-settings.png||height="511" width="500"]]
257 257  
258 258  
330 +
259 259  **Uplink data converter:**
260 260  
261 261  * Click on the **Select existing** button.
... ... @@ -264,40 +264,43 @@
264 264  Click **Next** button.
265 265  
266 266  
339 +[[image:add-integration-ul-data-converter.png||height="505" width="500"]]
267 267  
268 -[[image:add-integration-uplink-data-converter.png||height="511" width="500"]]
269 269  
270 270  
271 271  **Downlink data converter:**
272 272  
273 -* Click on the **Select existing** button.
274 -* **Downlink data converter**: Select **MQTT Downlink Converter NB/CB **from the dropdown list.
345 +Dragino NB/CB devices don't require a downlink data converter to decode their payloads, so you can skip this step.
275 275  
276 -Click **Next** button.
347 +* Click on the **Skip **button in the Downlink data converter section.
277 277  
349 +Click **Skip** button.
278 278  
279 279  
280 -[[image:add-integration-downlink-data-converter.png||height="511" width="500"]]
352 +[[image:integration-dl-skip.png||height="511" width="500"]]
281 281  
282 282  
355 +
283 283  **Connection:**
284 284  
285 -* **Host**: Cluster URL (Eg. 011731f7928541588a6cdfbbedfc63f4.s1.eu.hivemq.cloud)
358 +* **Host**: Host URL (Eg. **//011731f7xxxxxxxxxxxfbbedfc63f4.s1.eu.hivemq.cloud//**)
286 286  * **Port**: 8883
287 -* **Credentials**: Basic
288 -* **Enable SSL**: YES
360 +* **Credentials type**: Basic
289 289  * **Username**: Username (from your HiveMQ Cloud Cluster with your credentials)
290 290  * **Password:** Password (from your HiveMQ Cloud Cluster with your credentials)
291 -* **Topic:** tb/mqtt-integration-tutorial/sensors/+/telemetry (the + replaces any 'device name' and creates devices in the Entities -> Devices)
363 +* **Enable SSL**: YES
364 +* **Topic: device/a** (The topic can be anything; you can even use just the device name.)
292 292  * **QoS:** 0-At most once
293 293  
294 -[[image:add-integration-connection.png||height="511" width="500"]]
295 295  
296 296  
369 +[[image:add-integartion-connection.png||height="505" width="500"]]
370 +
371 +
297 297  Click on the **Advanced settings** button.
298 298  
299 -* **Clean session:** NO
300 -* **Retained**: NO
374 +* **Clean session:** YES
375 +* **Retained**: YES
301 301  
302 302  [[image:add-integration-connection-advanced-settings.png||height="510" width="500"]]
303 303  
... ... @@ -321,17 +321,200 @@
321 321  Since we haven't received data from a device yet, the integration **Status** is shown as **Pending.**
322 322  
323 323  
324 -
325 325  [[image:new-integration-pending.png]]
326 326  
327 327  
328 -= 5. Verifying the receipt of data from the device =
402 += 6. Verifying the receipt of data from virtual devices =
329 329  
330 330  
331 -On the terminal, issue the following MQTT command which simulates the device S31B-NB.
405 +== 6.1 How does it work? ==
332 332  
407 +
408 +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.
409 +
410 +The Mosquitto client publishes messages (payloads) on the topic **/device/a**. Of course, you can use any topic for testing.
411 +
412 +(% id="cke_bm_37386S" style="display:none" %) (%%)The MQTT payload format is as follows:
413 +
333 333  {{code language="none"}}
334 -mosquitto_pub -d -q 1 -h mqtt.eu.thingsboard.cloud -p 1883 -t v1/devices/S31B-NB/telemetry -u "24vk3w9h7sqdld1me5eh" -m "{temperature:20}"
415 +{"IMEI": "350693903995577", "temperature":25, "humidity":80, "pressure":1005}
335 335  {{/code}}
336 336  
337 -If the integration was performed without errors, after the transmission of the first telemetry, a new device with the name “S31B-NB” 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.
418 +Once ThingsBoard receives this message, it forwards this payload to the matching device through the integration.
419 +
420 +
421 +== 5.2 Sending messages ==
422 +
423 +
424 +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.
425 +
426 +{{code language="none"}}
427 +mosquitto_pub -d -q 1 -h 011731f7928xxxxx.s1.eu.hivemq.cloud -p 8883 -u "xxxxx" -P "xxxxx" -t "device/a" -m '{"IMEI":"350693903995577", "temperature":30, "humidity":80, "pressure":1005}'
428 +{{/code}}
429 +
430 +If the integration was performed without errors, the status of the integration changes to 'Active' after the first telemetry transmission.
431 +
432 +
433 +[[image:integration-active.png]]
434 +
435 +
436 +
437 +
438 +== 6.3 Viewing messages ==
439 +
440 +
441 +Go back to the **Integrations** page.
442 +
443 +Click on the **MQTT integration NB/CB** in the **Integrations** page to see its details.
444 +
445 +Click on the **Edit** button (//**pen icon**//).
446 +
447 +Click on the **Disabled** button in the upper-right corner.
448 +
449 +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.
450 +
451 +Click on the **Apply** button.
452 +
453 +Then click on the **Apply changes** (//**tick icon**//) button.
454 +
455 +
456 +[[image:Screenshot 2025-03-18 at 09.23.10.png]]
457 +
458 +
459 +Now go to the **Events** tab.
460 +
461 +Select the Event type as **Debug** from the dropdown list.
462 +
463 +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.
464 +
465 +
466 +[[image:Screenshot 2025-03-26 at 19.49.31.png]]
467 +
468 +
469 +
470 +
471 +Then click on the **three dots (...)** in the **Message** column. You can see the uplink message's **payload** in the **Message** window.
472 +
473 +
474 +[[image:Screenshot 2025-03-26 at 19.47.52.png]]
475 +
476 +
477 +
478 +
479 +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.
480 +
481 +
482 += 7. Creating a Dashboard =
483 +
484 +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.
485 +
486 +
487 +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.
488 +
489 +
490 +First simulate a few messages using MQTT. This time, we have added the 'humidity' field to the payload. Eg:
491 +
492 +{{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}}
493 +
494 +
495 +In **ThingsBoard**, from the left navigation menu, click **Dashboards**. Then, click the **+** button and select **Create new dashboard** from the dropdown menu.
496 +
497 +
498 +[[image:dashboard-1.png]]
499 +
500 +
501 +In the **Title** text box, enter **NB/CB Test Dashboard** as the title of the dashboard.
502 +
503 +Click on the **Add** button.
504 +
505 +
506 +[[image:dashboard-2.png||height="526" width="500"]]
507 +
508 +
509 +Click on the **Add widget / Add new widget** button.
510 +
511 +
512 +[[image:dashboard-3.png]]
513 +
514 +
515 +In the **Select widgets bundle** window, click **Charts**.
516 +
517 +
518 +[[image:dashboard-4.png||height="537" width="700"]]
519 +
520 +
521 +
522 +In the **Charts: select widget** window, click **Time series chart**.
523 +
524 +
525 +[[image:dashboard-5.png||height="525" width="700"]]
526 +
527 +
528 +Configure the **Time series chart** widget as follows:
529 +
530 +* **Datasource** - select S31B-NB device you provisioned.
531 +* **Series**:
532 +** **temperature** - you can see this key by default.
533 +** **humidity** - Click **Add series** button. Then add the **humidity** for the key and then type **%** as its unit.
534 +* Click on the **Add** button.
535 +
536 +[[image:timeseries-1.png||height="491" width="700"]]
537 +
538 +
539 +The time-series chart will appear in edit mode. Resize it by clicking and dragging the lower-right corner.
540 +
541 +Click the **Save** button to add the widget to the dashboard.
542 +
543 +
544 +[[image:timeseries-3.png||height="347" width="700"]]
545 +
546 +
547 +Now send the following MQTT messages from the terminal to simulate the data.
548 +
549 +
550 +{{code language="none"}}
551 +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}'
552 +
553 +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}'
554 +
555 +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}'
556 +
557 +{{/code}}
558 +
559 +The chart will update with the values in realtime, as shown in the below image.
560 +
561 +
562 +[[image:timeseries-4.png||height="316" width="700"]]
563 +
564 +
565 += 8. Configure NB-IoT Sensor =
566 +
567 +
568 +Now, let's experiment with sending data to ThingsBoard using a real NB-IoT device. For example, we will use the **TS01-NB**.
569 +
570 +First, configure the NB-IoT device with the necessary MQTT settings using AT commands. Below is a list of AT commands you can use.
571 +
572 +
573 +**AT Commands**
574 +
575 +* **AT+PRO=3,3    **~/~/ Use MQTT to connect to ThingsBoard. Payload Type set to 3.
576 +* **AT+SUBTOPIC=<MQTT subscribe topic> Eg: TS01-NB**
577 +* **AT+PUBTOPIC=<MQTT publish topic> Eg: TS01-NB**
578 +* **AT+CLIENT=null**
579 +* **AT+UNAME=<MQTT Username>**
580 +* **AT+PWD=<MQTT Password>**
581 +* **AT+SERVADDR=<Broker address, Port>**
582 +
583 +Test your uplink by pressing the ACT button for 1 second.
584 +
585 +
586 +
587 +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**.
588 +
589 +{{info}}
590 +The ThingsBoard uses the device's IMEI number included in the payload to create a device in the Devices section.
591 +{{/info}}
592 +
593 +[[image:image-4.png]]
594 +
595 +
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