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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 204.1
edited by Dilisi S
on 2025/04/21 16:49
Change comment: April 21 edits - part 1

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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.
... ... @@ -80,154 +80,153 @@
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 -};
140 140  
141 -/** Helper functions 'decodeToString' and 'decodeToJson' are already built-in **/
168 += 3. Data Converters =
142 142  
143 -return result;
144 -{{/code}}
145 145  
171 +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.
146 146  
147 -Click on the **Add** button.
173 +**In this section, you will create a universal uplink data converter for all Dragino NB-IoT devices. The uplink decoder converts any MQTT message coming from a device into key-value pairs that can be used to display and visualize data using various widgets on the dashboard**.
148 148  
149 149  
176 +== 3.1 Uplink ==
150 150  
151 -[[image:add-uplink-data-converter.png||height="529" width="500"]]
152 152  
179 +In the left navigation, click **Integrations center**, and then click **Data converters**.
153 153  
154 -You should see that the newly added **MQTT Uplink converter **NB/CB is listed on the **Data Converters** page.
155 155  
156 -[[image:data-converter-list-showing-uplink-dc.png]]
182 +[[image:data-converters-list-empty.png]]
157 157  
158 158  
185 +On the **Data converters** page, click on the ‘**+**’ button, and then click on **Create new converter** from the dropdown menu.
159 159  
160 -== 3.2 Downlink ==
161 161  
162 162  
163 -On the **Data converters** page, click on the ‘**+**’ button, and then click on the **Create new converter** from the dropdown menu.
189 +[[image:create-new-converter-menu.png||height="259" width="500"]]
164 164  
165 165  
166 -[[image:create-new-converter-menu.png||width="500"]]
192 +The **Add data converter** window appears.
167 167  
194 +Name it ‘**MQTT Uplink Converter**’ and select the Type as **Uplink**.
168 168  
196 +Click on the **TBEL** button if it has not been selected by default.
169 169  
170 -The **Add data converter** window will appear. Name it ‘**MQTT Downlink Converter NB/CB**’ and select the Type as **Downlink**.
198 +Replace the default TBEL decoder function with the following universal TBEL decoder function, which decodes MQTT payload from any Dragino NB-IoT device.
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.
173 173  
174 -
175 175  {{code language="JavaScript"}}
176 -// Encode downlink data from incoming Rule Engine message
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 -
183 -/** Encoder **/
184 -
185 -var data = {};
186 -
187 -// Process data from incoming message and metadata
188 -
189 -data.tempFreq = msg.temperatureUploadFrequency;
190 -data.humFreq = msg.humidityUploadFrequency;
191 -
192 -data.devSerialNumber = metadata['ss_serialNumber'];
193 -
194 -// Result object with encoded downlink payload
195 -var result = {
196 -
197 - // downlink data content type: JSON, TEXT or BINARY (base64 format)
198 - contentType: "JSON",
199 -
200 - // downlink data
201 - data: JSON.stringify(data),
202 -
203 - // Optional metadata object presented in key/value format
204 - metadata: {
205 - topic: metadata['deviceType']+'/'+metadata['deviceName']+'/upload'
202 +// decode payload to JSON
203 +var pattern = "yyyy/MM/dd HH:mm:ss";
204 +var objdata = {};
205 +var obj1 = {};
206 +var data = decodeToJson(payload);
207 +var deviceName = data.IMEI;
208 +data.remove("IMEI");
209 +var modelname = "Dragino "+ data.Model;
210 +//var mod = data.mod
211 +data.remove("Model");
212 +//delete data.mod
213 +var timestamp = new Date().getTime();
214 +foreach (entry: data.entrySet()) {
215 + var key = entry.getKey();
216 + var value = entry.getValue();
217 + //objdata[key] = data[key]
218 + if(key.matches("^-?\\d+$")){ //is number
219 + obj1[key]=data[key];
220 + var index = obj1[key].length-1;
221 + obj1[key][index]=new Date(obj1[key][index],pattern).getTime();
206 206   }
207 -
223 + else if (key==="bat"||key==="BAT"){
224 + objdata["battery"] = data[key];
225 + }
226 + else{
227 + objdata[key] = data[key];
228 +}}
229 +var listdata = [{"ts":timestamp,"values":objdata}];
230 +foreach ( entry1: obj1.entrySet()){
231 + var key1 = entry1.getKey();
232 + var value1 = entry1.getValue();
233 + var index = obj1[key1].length-1;
234 + var ts = obj1[key1][index];
235 + if (modelname=="Dragino RS485-NB"){
236 + listdata.push({"ts":ts,"values":{"Payload":obj1[key1][0]}});
237 + }
238 + else{
239 + listdata.push({"ts":ts,"values":{"values":obj1[key1]}});
240 + }
241 +}
242 + var result = {
243 + deviceName: deviceName,
244 + deviceType: modelname,
245 + attributes: {
246 + model: modelname
247 + //customerName: "NB-CB",
248 + //groupName: "NB-CB",
249 + //integrationName: metadata['integrationName']
250 + },
251 + telemetry: listdata
208 208  };
209 -
210 210  return result;
211 211  {{/code}}
212 212  
213 213  
214 -Click on the **Add** button.
257 +Once you modify the decoder function, click on the **Add** button.
215 215  
216 216  
260 +[[image:mqtt-uplink-converter.png||height="498" width="500"]]
217 217  
218 -[[image:add-downlink-data-converter.png||height="529" 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.
264 +You should see that the newly added **MQTT Uplink converter **NB/CB is listed on the **Data Converters** page.
222 222  
223 223  
267 +
224 224  [[image:data-converters-list.png]]
225 225  
226 226  
271 += 4. Add Integration =
227 227  
228 -= 3. Add Integration =
229 229  
230 -
231 231  In the left navigation, click **Integrations center**, and then click **Integrations**.
232 232  
233 233  
... ... @@ -245,17 +245,18 @@
245 245  **Basic settings:**
246 246  
247 247  * **Integration type**: MQTT
248 -* **Name**: MQTT integration NB/CB
291 +* **Name**: MQTT integration - Device A
249 249  * **Enable integration**: YES
250 -* **Allows create devices or assets**: YES
293 +* **Allow create devices or assets**: YES
251 251  
252 252  Click **Next** button.
253 253  
254 254  
298 +[[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  
302 +
259 259  **Uplink data converter:**
260 260  
261 261  * Click on the **Select existing** button.
... ... @@ -264,40 +264,41 @@
264 264  Click **Next** button.
265 265  
266 266  
311 +[[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.
317 +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.
319 +* Click on the **Skip **button in the Downlink data converter section.
277 277  
321 +Click **Skip** button.
278 278  
279 279  
280 -[[image:add-integration-downlink-data-converter.png||height="511" width="500"]]
324 +[[image:integration-dl-skip.png||height="511" width="500"]]
281 281  
282 282  
327 +
283 283  **Connection:**
284 284  
285 -* **Host**: Cluster URL (Eg. 011731f7928541588a6cdfbbedfc63f4.s1.eu.hivemq.cloud)
330 +* **Host**: Host URL (Eg. **//011731f7xxxxxxxxxxxfbbedfc63f4.s1.eu.hivemq.cloud//**)
286 286  * **Port**: 8883
287 -* **Credentials**: Basic
288 -* **Enable SSL**: YES
332 +* **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)
335 +* **Enable SSL**: YES
336 +* **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"]]
339 +[[image:add-integartion-connection.png||height="505" width="500"]]
295 295  
296 296  
297 297  Click on the **Advanced settings** button.
298 298  
299 -* **Clean session:** NO
300 -* **Retained**: NO
344 +* **Clean session:** YES
345 +* **Retained**: YES
301 301  
302 302  [[image:add-integration-connection-advanced-settings.png||height="510" width="500"]]
303 303  
... ... @@ -321,17 +321,204 @@
321 321  Since we haven't received data from a device yet, the integration **Status** is shown as **Pending.**
322 322  
323 323  
369 +[[image:integration-added.png]]
324 324  
325 -[[image:new-integration-pending.png]]
326 326  
327 327  
328 -= 5. Verifying the receipt of data from the device =
373 += 5. 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.
376 +== 5.1 How does it work? ==
332 332  
378 +
379 +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.
380 +
381 +The Mosquitto client publishes messages (payloads) on the topic **/device/a**. Of course, you can use any topic for testing.
382 +
383 +(% id="cke_bm_37386S" style="display:none" %) (%%)The MQTT payload format is as follows:
384 +
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}"
386 +{"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.
389 +Once ThingsBoard receives this message, it forwards this payload to the matching device through the integration.
390 +
391 +
392 +== 5.2 Sending messages ==
393 +
394 +
395 +On your computer's terminal, issue the following MQTT command which simulates the device '**Device A'**. The message payload contains the fields IMEI, temperature, humidity, and pressure, which hold the values 350693903995577, 30, 80, and 1005 respectively. This payload is also (technically) known as telemetry.
396 +
397 +{{code language="none"}}
398 +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}'
399 +{{/code}}
400 +
401 +If the integration was performed without errors, the status of the integration changes to 'Active' after the first telemetry transmission.
402 +
403 +
404 +[[image:integration-active.png]]
405 +
406 +
407 +== 5.3 Viewing messages ==
408 +
409 +
410 +Go back to the **Integrations** page.
411 +
412 +Click on the **MQTT integration NB/CB** in the **Integrations** page to see its details.
413 +
414 +Click on the **Edit** button (//**pen icon**//).
415 +
416 +Click on the **Disabled** button in the upper-right corner.
417 +
418 +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.
419 +
420 +Click on the **Apply** button.
421 +
422 +Then click on the **Apply changes** (//**tick icon**//) button.
423 +
424 +
425 +[[image:debug-enabled.png||height="301" width="700"]]
426 +
427 +
428 +
429 +
430 +Now go to the **Events** tab.
431 +
432 +Select the **Event type** as **Debug** from the dropdown list.
433 +
434 +Publish another message (of course, you can repeat the previous message by pressing the UP arrow on your keyboard and then press Enter key) to your MQTT broker from your terminal, for example:
435 +
436 +{{code language="none"}}
437 +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}'
438 +{{/code}}
439 +
440 +Now you can see that uplink message in the **Events** tab (Click the **refresh** button if you didn't see any messages in the Events tab). The status should be **OK **if there is no errors in your integration.
441 +
442 +
443 +[[image:Screenshot 2025-03-26 at 19.49.31.png]]
444 +
445 +
446 +
447 +Then click on the **three dots (...)** in the **Message** column. You can see the uplink message's **payload** in the **Message** window.
448 +
449 +
450 +[[image:Screenshot 2025-03-26 at 19.47.52.png]]
451 +
452 +
453 +
454 +
455 +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.
456 +
457 +
458 += 6. Creating a Dashboard =
459 +
460 +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.
461 +
462 +
463 +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.
464 +
465 +
466 +First simulate a few messages using MQTT. This time, we have added the 'humidity' field to the payload. Eg:
467 +
468 +{{code language="none"}}mosquitto_pub -d -q 1 -h 011731f7928xxxxx.s1.eu.hivemq.cloud -p 8883 -u "xxxxx" -P "xxxxx" -t "device/a" -m '{"IMEI":"350693903995577", "temperature":22, "humidity":80, "pressure":1005}'{{/code}}
469 +
470 +
471 +In **ThingsBoard**, from the left navigation menu, click **Dashboards**. Then, click the **+** button and select **Create new dashboard** from the dropdown menu.
472 +
473 +
474 +[[image:dashboard-1.png]]
475 +
476 +
477 +In the **Title** text box, enter **NB/CB Test Dashboard** as the title of the dashboard.
478 +
479 +Click on the **Add** button.
480 +
481 +
482 +[[image:dashboard-2.png||height="526" width="500"]]
483 +
484 +
485 +Click on the **Add widget / Add new widget** button.
486 +
487 +
488 +[[image:dashboard-3.png]]
489 +
490 +
491 +In the **Select widgets bundle** window, click **Charts**.
492 +
493 +
494 +[[image:dashboard-4.png||height="537" width="700"]]
495 +
496 +
497 +
498 +In the **Charts: select widget** window, click **Time series chart**.
499 +
500 +
501 +[[image:dashboard-5.png||height="525" width="700"]]
502 +
503 +
504 +Configure the **Time series chart** widget as follows:
505 +
506 +* **Datasource** - select **Device A** device you provisioned.
507 +* **Series**:
508 +** **temperature** - you can see this key by default.
509 +** **humidity** - Click **Add series** button. Then add the **humidity** for the key and then type **%** as its unit.
510 +* Click on the **Add** button.
511 +
512 +{{info}}
513 +You can add only the relevant fields from the device's payload to display data on a widget. These fields are called 'keys'.
514 +{{/info}}
515 +
516 +[[image:Screenshot 2025-03-31 at 06.51.15.png||height="485" width="700"]]
517 +
518 +
519 +The time-series chart will appear in edit mode. Resize it by clicking and dragging the lower-right corner.
520 +
521 +Click the **Save** button to add the widget to the dashboard.
522 +
523 +
524 +[[image:timeseries-3.png||height="347" width="700"]]
525 +
526 +
527 +Now send the following MQTT messages from the terminal to simulate the data.
528 +
529 +
530 +{{code language="none"}}
531 +mosquitto_pub -d -q 1 -h 011731f7928xxxxx.s1.eu.hivemq.cloud -p 8883 -u "xxxxx" -P "xxxxx" -t "device/a" -m '{"IMEI":"350693903995577", "temperature":22, "humidity":70, "pressure":1005}'
532 +
533 +mosquitto_pub -d -q 1 -h 011731f7928xxxxx.s1.eu.hivemq.cloud -p 8883 -u "xxxxx" -P "xxxxx" -t "device/a" -m '{"IMEI":"350693903995577", "temperature":27, "humidity":72, "pressure":1005}'
534 +
535 +mosquitto_pub -d -q 1 -h 011731f7928xxxxx.s1.eu.hivemq.cloud -p 8883 -u "xxxxx" -P "xxxxx" -t "device/a" -m '{"IMEI":"350693903995577", "temperature":19, "humidity":80, "pressure":1005}'
536 +{{/code}}
537 +
538 +The chart will update with the values in realtime, as shown in the below image.
539 +
540 +
541 +[[image:timeseries-4.png||height="316" width="700"]]
542 +
543 +
544 += 8. Configure Physical NB-IoT Sensor =
545 +
546 +
547 +Now, let's experiment with sending data to ThingsBoard using a real NB-IoT device. For example, we will use the **TS01-NB**.
548 +
549 +First, configure the NB-IoT device with the necessary MQTT settings using AT commands. Below is a list of AT commands you can use.
550 +
551 +
552 +**AT Commands**
553 +
554 +* **AT+PRO=3,3    **~/~/ Use MQTT to connect to ThingsBoard. Payload Type set to 3.
555 +* **AT+SUBTOPIC=<MQTT subscribe topic> Eg: TS01-NB**
556 +* **AT+PUBTOPIC=<MQTT publish topic> Eg: TS01-NB**
557 +* **AT+CLIENT=null**
558 +* **AT+UNAME=<MQTT Username>**
559 +* **AT+PWD=<MQTT Password>**
560 +* **AT+SERVADDR=<Broker address, Port>**
561 +
562 +Test your uplink by pressing the ACT button for 1 second.
563 +
564 +
565 +
566 +The following image shows the uplink payload of a real Dragino device. The publish topic is '**TS01-NB' that contains fields in the payload, IMEI, IMSI, Model, temperature, etc**. Note that we have created a device named **TS01-NB** in the **Devices** section in advance.
567 +
568 +
569 +[[image:image-4.png]]
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