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Last modified by Dilisi S on 2025/04/23 19:23
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edited by Dilisi S
on 2025/03/03 02:28
Change comment: Uploaded new attachment "ThingsBoard-add-data-converter-downlink.png", version {1}
To version 66.1
edited by Dilisi S
on 2025/03/08 03:35
Change comment: Deleted image "add-connection-success.png"

Summary

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2 2  
3 3  {{toc/}}
4 4  
5 +{{warning}}
6 +Draft Document
7 +{{/warning}}
5 5  
6 -= Introduction =
7 7  
8 -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.
9 9  
11 +
12 += 1. Introduction =
13 +
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 +
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**.
18 +
19 +
20 += 2. Add New Device =
21 +
22 +
23 +First, we will add a device to simulate data using MQTT. This device does not represent a real physical device but serves as a common virtual device for all Dragino NB/CB devices.
24 +
25 +In the left navigation, click **Entities** and then click **Devices**.
26 +
27 +[[image:device-list-empty.png]]
28 +
29 +
30 +On the **Devices **page, click on the ‘**+**’ button, and then click on the **Add new device **from the dropdown menu.
31 +
32 +[[image:ThingsBoard-add-new-device.png||height="279" width="500"]]
33 +
34 +
35 +The **Add new device** window appears. Name the device, for example '**Virtual NB/CB device**'.
36 +
37 +Click on the **Next: Credentials** button.
38 +
39 +[[image:new-device-device-details.png||height="529" width="500"]]
40 +
41 +
42 +Click the **Access token** button if it is not selected by default.
43 +
44 +Copy the **Access token** to a text editor, as you will need it in the section **'Sending data from an MQTT client'**.
45 +
46 +Click on the **Add** button.
47 +
48 +[[image:new-device-access-token.png||height="528" width="500"]]
49 +
50 +
51 +Click on the **MQTT** button.
52 +
53 +Then, select the operating system you are going to use with the **Mosquitto MQTT Broker**. This example shows sending a command from a computer running **MacOS**. First, install the necessary client tools on your computer.
54 +
55 +Copy the MQTT pub command in the '**Execute the following command**' section.
56 +
57 +{{code language="none"}}
58 +mosquitto_pub -d -q 1 -h mqtt.eu.thingsboard.cloud -p 1883 -t v1/devices/me/telemetry -u "24vk3w9h7sqdld1me5eh" -m "{temperature:25}"
59 +{{/code}}
60 +
61 +Note that the **State** is still shown as **'Inactive'** in the **Latest telemetry** section.
62 +
63 +[[image:new-device-check-connectivity.png||height="522" width="500"]]
64 +
65 +
66 +On the terminal, enter the command you copied. This command sends the MQTT payload **{temperature:25}** as telemetry data from a virtual device named **'me'**. Of course, you can replace **'me'** with a device name or use the wildcard character **'+'** to match any device name.
67 +
68 +
69 +[[image:mqtt-command-1.png||height="228" width="700"]]
70 +
71 +
72 +If the command is successful, you can see the telemetry data you sent under the **Latest telemetry** section. Note that the **State** is now **'Active'** in the **Latest telemetry** section.
73 +
74 +
75 +[[image:new-device-telemetry-test.png||height="520" width="500"]]
76 +
77 +
78 +Send the same command again, only changing the **temperature** value, to see how the **Latest telemetry** section updates its data.
79 +
80 +Once you are done experimenting with this, close the window by clicking the **Close** button.
81 +
82 +
83 +[[image:mqtt-command-2.png||height="227" width="700"]]
84 +
85 +
86 +
87 +[[image:virtual-device-active.png]]
88 +
89 +
90 += 3. Data Converters =
91 +
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 +
95 +
96 +== 3.1 Uplink ==
97 +
98 +
99 +In the left navigation, click **Integrations center**, and then click **Data converters**.
100 +
101 +[[image:data-converter-list-page.png]]
102 +
103 +
104 +On the **Data converters** page, click on the ‘+’ button, and then click on the **Create new converter** from the dropdown menu.
105 +
106 +[[image:ThingsBoard-new-data-converter.png||height="282" width="500"]]
107 +
108 +
109 +The **Add data converter** window will appear. Name it ‘**MQTT Uplink Converter NB/CB**’ and select the Type as **Uplink**.
110 +
111 +Click on the **JavaScript** button. Now copy and paste the following JavaScript to the **Decoder function** section. This decoder function is valid for both NB and CB series devices.
112 +
113 +{{code language="JavaScript"}}
114 +//Version: 0.1
115 +// decode payload to string
116 +var payloadStr = decodeToString(payload);
117 +
118 +// decode payload to JSON
119 +var objdata = {};
120 +var obj1 = {};
121 +var data = decodeToJson(payload);
122 +var deviceName = data.IMEI;
123 +delete data.IMEI;
124 +var modelname = "Dragino " + data.Model;
125 +//var mod = data.mod
126 +delete data.Model;
127 +//delete data.mod
128 +var timestamp = new Date().getTime();
129 +
130 +for (var key in data) {
131 +
132 + if (Number(key)) {
133 + obj1[key] = data[key];
134 + obj1[key][obj1[key].length - 1] = Number(new Date(
135 + obj1[key][obj1[key].length - 1]));
136 +
137 + }
138 +//Alec submitted25/02/25
139 +//turn old key into new
140 + else if (key === "Reading") {
141 + objdata["reading"] = data[key];
142 + } else if (key === "work mode") {
143 + objdata["work_mode"] = data[key];
144 + } else if (key === "hum") {
145 + objdata["humidity"] = data[key];
146 + }else if (key === "hum2") {
147 + objdata["humidity2"] = data[key];
148 + } else if (key === "hum3") {
149 + objdata["humidity3"] = data[key];
150 + } else if (key === "tem") {
151 + objdata["temperature"] = data[key];
152 + } else if (key === "tem2") {
153 + objdata["temperature2"] = data[key];
154 + } else if (key === "tem3") {
155 + objdata["temperature3"] = data[key];
156 + } else if (key === "DS18B20_Temp") {
157 + objdata["temperature_pro"] = data[key];
158 + } else if (key === "ds18b20_temperature") {
159 + objdata["temperature_pro"] = data[key];
160 + } else if (key === "DS18B20_temperature_pro") {
161 + objdata["temperature_pro"] = data[key];
162 + } else if (key === "tdc send flag") {
163 + objdata["tdc_send_flag"] = data[key];
164 + } else if (key === "trigger mode") {
165 + objdata["trigger_mode"] = data[key];
166 + } else if (key === "soil dielectric constant") {
167 + objdata["soil_dielectric_constant"] = data[key];
168 + } else if (key === "door open num") {
169 + objdata["door_open_num"] = data[key];
170 + } else if (key === "door duration") {
171 + objdata["door_duration"] = data[key];
172 + } else if (key === "count time") {
173 + objdata["count_time"] = data[key];
174 + } else if (key === "last open time2") {
175 + objdata["last_open_time2"] = data[key];
176 + } else if (key === "last open time3") {
177 + objdata["last_open_time3"] = data[key];
178 + }
179 +//Alec submitted25/02/25
180 + else {
181 + objdata[key] = data[key]
182 + }
183 +}
184 +var listdata = [{
185 + "ts": timestamp,
186 + "values": objdata
187 +}]
188 +for (var key1 in obj1) {
189 + if (modelname == "Dragino RS485-NB") {
190 + listdata.push({
191 + "ts": obj1[key1][obj1[key1].length - 1],
192 + "values": {
193 + "Payload": obj1[key1][0],
194 + }
195 + })
196 + } else {
197 + listdata.push({
198 + "ts": obj1[key1][obj1[key1].length - 1],
199 + "values": {
200 + "values": obj1[key1]
201 + },
202 + })
203 + }
204 +}
205 +var result = {
206 +
207 + deviceName: deviceName,
208 + deviceType: modelname,
209 + attributes: {
210 + model: modelname,
211 + //customerName: "NB-CB",
212 + //groupName: "NB-CB",
213 + //integrationName: metadata['integrationName']
214 +
215 + },
216 + telemetry: listdata
217 +}
218 +
219 +function decodeToString(payload) {
220 + return String.fromCharCode.apply(String, payload);
221 +}
222 +
223 +function decodeToJson(payload) {
224 + // covert payload to string.
225 + var str = decodeToString(payload);
226 +
227 + // parse string to JSON
228 + var data = JSON.parse(str);
229 + return data;
230 +}
231 +
232 +return result;
233 +
234 +{{/code}}
235 +
236 +
237 +Click on the **Add** button.
238 +
239 +[[image:uplink-data-converter.png||height="529" width="500"]]
240 +
241 +
242 +You should see that the newly added **uplink data converter** is listed on the **Data Converters** page.
243 +
244 +[[image:data-converter-list-showing-uplink-dc.png]]
245 +
246 +
247 +== 3.2 Downlink ==
248 +
249 +
250 +On the **Data converters** page, click on the ‘**+**’ button, and then click on the **Create new converter** from the dropdown menu.
251 +
252 +[[image:ThingsBoard-new-data-converter.png||height="282" width="500"]]
253 +
254 +
255 +The **Add data converter** window will appear. Name it ‘**MQTT Downlink Converter NB/CB**’ and select the Type as **Downlink**.
256 +
257 +Click on the **JavaScript** button. Now copy and paste the following JavaScript to the **Encoder function **section. This encoder function is valid for both NB and CB series devices.
258 +
259 +
260 +{{code language="JavaScript"}}
261 +function hexToBase64(hexString) {
262 + // 将16进制字符串两个字符转换为一个字节
263 + var bytes = hexString.match(/.{2}/g);
264 + // 对每个字节进行解析，并转换为对应的字符
265 + var binaryString = bytes.map(function(byte) {
266 + return String.fromCharCode(parseInt(byte, 16));
267 + }).join('');
10 10  
269 + // 使用btoa进行base64编码
270 + return btoa(binaryString);
271 +}
272 +
273 +// Result object with encoded downlink payload
274 +var result = {
275 + // downlink data content type: JSON, TEXT or BINARY (base64 format)
276 + contentType: "BINARY",
277 +
278 + // downlink data
279 + data:hexToBase64(metadata.shared_value)
280 +
281 + // Optional metadata object presented in key/value format
282 + //metadata: {}
283 +
284 +};
285 +
286 +return result;
287 +{{/code}}
288 +
289 +
290 +Click on the **Add** button.
291 +
292 +[[image:downlink-data-converter.png||height="530" width="500"]]
293 +
294 +
295 +You should see that the newly added **downlink data converter** is listed on the **Data Converters** page.
296 +
297 +[[image:data-converter-list.png]]
298 +
299 +
300 += 4. Add Integration =
301 +
302 +
303 +In the left navigation, click **Integrations center**, and then click **Integrations**.
304 +
305 +On the **Integrations** page, click on the '**+**' button.
306 +
307 +[[image:data-converter-list-page.png]]
308 +
309 +
310 +The **Add integration** window appears.
311 +
312 +In the **Add integration** window, configure the following settings:
313 +
314 +
315 +**Basic settings:**
316 +
317 +* **Integration type**: MQTT
318 +* **Name**: MQTT integration NB/CB
319 +
320 +Click **Next** button.
321 +
322 +[[image:add-integration-basic-settings.png||height="511" width="500"]]
323 +
324 +
325 +**Uplink data converter:**
326 +
327 +* Click on the **Select existing** button.
328 +* **Uplink data converter**: Select **MQTT Uplink Converter NB/CB **from the dropdown list.
329 +
330 +Click **Next** button.
331 +
332 +[[image:add-integration-uplink-data-converter.png||width="500"]]
333 +
334 +
335 +**Downlink data converter:**
336 +
337 +* Click on the **Select existing** button.
338 +* **Downlink data converter**: Select **MQTT Downlink Converter NB/CB **from the dropdown list.
339 +
340 +Click **Next** button.
341 +
342 +[[image:add-integration-downlink-data-converter.png||height="510" width="500"]]
343 +
344 +
345 +**Connection:**
346 +
347 +* **Host**: mqtt.eu.thingsboard.cloud (This is the host name you copied from the device - See section xxxxx for more information)
348 +* **Port**: 1883 (This is the port number you copied from the device - See section xxxxx for more information)
349 +* **Credentials**: Basic
350 +* **Username**: Access token (This is the access token you copied from the device)
351 +* **Password** - Leave it as blank
352 +* **Topic** - v1/devices/+/telemetry (sightly modify the topic 'v1/devices/me/telemetry' you copied from the device to enable receiving data from any 'device name')
353 +* **QoS** - 0-At most once
354 +
355 +Click on the **Check connection** button to verify the MQTT connection using the provided parameters.
356 +
357 +[[image:add-integration-connection.png||width="500"]]
358 +
359 +
360 +If the connection is successful, you will see the **Connected** message.
361 +
362 +Click on the **Add** button.
363 +
364 +[[image:add-connection-success.png||height="511" width="500"]]
365 +
366 +
367 +You should see that the newly added integration is listed on the **Integrations** page.
368 +
369 +Since we haven't received data from a device yet, the integration **Status** is shown as **Pending.**
370 +
371 +[[image:integrations-list-added-pending.png]]
372 +
373 +
374 += 5. Verifying the receipt of data from the device =
375 +
376 +
377 +On the terminal, issue the following MQTT command which simulates the device S31B-NB.
378 +
379 +{{code language="none"}}
380 +mosquitto_pub -d -q 1 -h mqtt.eu.thingsboard.cloud -p 1883 -t v1/devices/S31B-NB/telemetry -u "24vk3w9h7sqdld1me5eh" -m "{temperature:20}"
381 +{{/code}}
382 +
383 +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.
384 +
385 +
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