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Version 84.14 by Xiaoling on 2023/09/11 15:26
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1 (% style="text-align:center" %)
2 [[image:image-20230911134259-1.png||height="570" width="570"]]
3
4
5 **Table of Contents:**
6
7 {{toc/}}
8
9
10
11
12
13
14 = 1. Introduction =
15
16 == 1.1 What is DDS20-NB NB-IoT Ultrasonic liquid level Sensor ==
17
18
19 The Dragino DDS20-NB is a (% style="color:blue" %)**NB-IoT Ultrasonic liquid level sensor**(%%) for Internet of Things solution. It uses (% style="color:blue" %)**none-contact method **(%%)to measure the (% style="color:blue" %)**height of liquid**(%%) in a container without opening the container, and send IoT platform via NB-IoT network.
20
21 The DDS20-NB sensor is installed directly below the container to detect the height of the liquid level. User doesn't need to open a hole on the container to be tested. The none-contact measurement makes the measurement safety, easier and possible for some strict situation. 
22
23 DDS20-NB uses (% style="color:blue" %)**ultrasonic sensing technology**(%%) for distance measurement. DDS20-NB is of high accuracy to measure various liquid such as: (% style="color:blue" %)**toxic substances**, **strong acids**, **strong alkalis**(%%) and (% style="color:blue" %)**various pure liquids**(%%) in high-temperature and high-pressure airtight containers.
24
25 DDS20-NB supports different uplink methods including (% style="color:blue" %)**MQTT, MQTTs, UDP & TCP**(%%) for different application requirement, and support uplinks to various IoT Servers.
26
27 DDS20-NB (% style="color:blue" %)**supports BLE configure **(%%)and(% style="color:blue" %)** OTA update**(%%) which make user easy to use.
28
29 DDS20-NB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long-term use up to severa years.
30
31 DDS20-NB has optional built-in SIM card and default IoT server connection version. Which makes it works with simple configuration.
32
33
34 [[image:image-20230911140426-2.png||height="320" width="951"]]
35
36
37 == 1.2 ​Features ==
38
39
40 * NB-IoT Bands: B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B28/B66/B70/B85 @H-FDD
41 * Ultra-low power consumption
42 * Liquid Level Measurement by Ultrasonic technology
43 * Measure through container, No need to contact Liquid
44 * Valid level range 20mm - 2000mm
45 * Accuracy: ±(5mm+S*0.5%) (S: Measure Value)
46 * Multiply Sampling and one uplink
47 * Support Bluetooth v5.1 remote configure and update firmware
48 * Uplink on periodically
49 * Downlink to change configure
50 * IP66 Waterproof Enclosure
51 * 8500mAh Battery for long term use
52 * Nano SIM card slot for NB-IoT SIM
53
54 == 1.3 Specification ==
55
56
57 (% style="color:blue" %)**Common DC Characteristics:**
58
59 * Supply Voltage: 2.5v ~~ 3.6v
60 * Operating Temperature: -40 ~~ 85°C
61
62 (% style="color:blue" %)**NB-IoT Spec:**
63
64 (% style="color:#037691" %)**NB-IoT Module: BC660K-GL**
65
66 (% style="color:#037691" %)**Support Bands:**
67
68 * B1 @H-FDD: 2100MHz
69 * B2 @H-FDD: 1900MHz
70 * B3 @H-FDD: 1800MHz
71 * B4 @H-FDD: 2100MHz
72 * B5 @H-FDD: 860MHz
73 * B8 @H-FDD: 900MHz
74 * B12 @H-FDD: 720MHz
75 * B13 @H-FDD: 740MHz
76 * B17 @H-FDD: 730MHz
77 * B18 @H-FDD: 870MHz
78 * B19 @H-FDD: 870MHz
79 * B20 @H-FDD: 790MHz
80 * B25 @H-FDD: 1900MHz
81 * B28 @H-FDD: 750MHz
82 * B66 @H-FDD: 2000MHz
83 * B70 @H-FDD: 2000MHz
84 * B85 @H-FDD: 700MHz
85
86 (% style="color:blue" %)**Battery:**
87
88 * Li/SOCI2 un-chargeable battery
89 * Capacity: 8500mAh
90 * Self Discharge: <1% / Year @ 25°C
91 * Max continuously current: 130mA
92 * Max boost current: 2A, 1 second
93
94 (% style="color:blue" %)**Power Consumption**
95
96 * STOP Mode: 10uA @ 3.3v
97 * Max transmit power: 350mA@3.3v
98
99 == 1.4 Suitable Container & Liquid ==
100
101
102 * Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
103 * Container shape is regular, and surface is smooth.
104 * Container Thickness:
105 ** Pure metal material.  2~~8mm, best is 3~~5mm
106 ** Pure non metal material: <10 mm
107 * Pure liquid without irregular deposition.
108
109 (% style="display:none" %)
110
111 == 1.5 Install DDS20-NB ==
112
113
114 (% style="color:blue" %)**Step 1**(%%):  ** Choose the installation point.**
115
116 DDS20-NB (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
117
118 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615091045-3.png?rev=1.1||alt="image-20220615091045-3.png"]]
119
120
121 (((
122 (% style="color:blue" %)**Step 2**(%%):  **Polish the installation point.**
123 )))
124
125 (((
126 For Metal Surface with paint, it is important to polish the surface, first use crude sand paper to polish the paint level , then use exquisite sand paper to polish the metal level to make it shine & smooth.
127 )))
128
129 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/DDS20-LB_LoRaWAN_Ultrasonic_Liquid_Level_Sensor_User_Manual/WebHome/image-20230613143052-5.png?rev=1.1||alt="image-20230613143052-5.png"]]
130
131
132 No polish needed if the container is shine metal surface without paint or non-metal container.
133
134 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/DDS20-LB_LoRaWAN_Ultrasonic_Liquid_Level_Sensor_User_Manual/WebHome/image-20230613143125-6.png?rev=1.1||alt="image-20230613143125-6.png"]]
135
136
137 (((
138 (% style="color:blue" %)**Step3:   **(%%)**Test the installation point.**
139 )))
140
141 (((
142 Power on DDS20-NB, check if the blue LED is on, If the blue LED is on, means the sensor works. Then put ultrasonic coupling paste on the sensor and put it tightly on the installation point.
143 )))
144
145 (((
146 It is necessary to put the coupling paste between the sensor and the container, otherwise DDS20-NB won't detect the liquid level.
147 )))
148
149 (((
150 After paste the DDS20-NB well, power on DDS20-NB. In the first 30 seconds of booting, device will check the sensors status and BLUE LED will show the status as below. After 30 seconds, BLUE LED will be off to save battery life.
151 )))
152
153
154 (((
155 (% style="color:blue" %)**LED Status:**
156 )))
157
158 * (((
159 **Onboard LED**: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
160 )))
161
162 * (((
163 (% style="color:blue" %)**BLUE LED**(% style="color:red" %)** always ON**(%%): Sensor is power on but doesn't detect liquid. There is problem in installation point.
164 )))
165 * (((
166 (% style="color:blue" %)**BLUE LED**(% style="color:red" %)** slowly blinking**(%%): Sensor detects Liquid Level, The installation point is good.
167 )))
168
169 (((
170 DDS20-NB will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
171 )))
172
173
174 (((
175 (% style="color:red" %)**Note :**(%%)** (% style="color:blue" %)Ultrasonic coupling paste(%%)**(% style="color:blue" %) (%%) is subjected in most shipping way. So the default package doesn't include it and user needs to purchase locally.
176 )))
177
178
179 (((
180 (% style="color:blue" %)**Step4:   **(%%)**Install use Epoxy ab glue.**
181 )))
182
183 (((
184 Prepare Eproxy AB glue.
185 )))
186
187 (((
188 Put Eproxy AB glue in the sensor and press it hard on the container installation point.
189 )))
190
191 (((
192 Reset DDS20-NB and see if the BLUE LED is slowly blinking.
193 )))
194
195 [[image:image-20230809172509-1.png]]
196
197 (((
198 (% style="color:red" %)**Note :**(% style="color:red; display:none" %)** **
199
200 (% style="color:red" %)**1:**(%%)** (% style="color:blue" %)Eproxy AB glue(%%)** needs 3~~ 5 minutes to stable attached. we can use other glue material to keep it in the position.
201 )))
202
203 (((
204 (% style="color:red" %)**2:**(%%)** (% style="color:blue" %)Eproxy AB glue(%%)** is subjected in most shipping way. So the default package doesn't include it and user needs to purchase locally.
205 )))
206
207
208 == 1.6 Applications ==
209
210
211 * Smart liquid control solution
212
213 * Smart liquefied gas solution
214
215 == 1.7 Precautions ==
216
217
218 * At room temperature, containers of different materials, such as steel, glass, iron, ceramics, non-foamed plastics and other dense materials, have different detection blind areas and detection limit heights.
219
220 * For containers of the same material at room temperature, the detection blind zone and detection limit height are also different for the thickness of the container.
221
222 * When the detected liquid level exceeds the effective detection value of the sensor, and the liquid level of the liquid to be measured shakes or tilts, the detected liquid height is unstable.
223
224 (% style="display:none" %)
225
226
227
228 == 1.8 Sleep mode and working mode ==
229
230
231 (% style="color:blue" %)**Deep Sleep Mode: **(%%)Sensor doesn't have any LoRaWAN activate. This mode is used for storage and shipping to save battery life.
232
233 (% style="color:blue" %)**Working Mode:** (%%)In this mode, Sensor will work as LoRaWAN Sensor to Join LoRaWAN network and send out sensor data to server. Between each sampling/tx/rx periodically, sensor will be in IDLE mode), in IDLE mode, sensor has the same power consumption as Deep Sleep mode.
234
235
236 == 1.9 Button & LEDs ==
237
238
239 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
240
241
242 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
243 |=(% style="width: 167px;background-color:#4F81BD;color:white" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width:225px;background-color:#4F81BD;color:white" %)**Action**
244 |(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
245 If sensor has already attached to NB-IoT network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
246 Meanwhile, BLE module will be active and user can connect via BLE to configure device.
247 )))
248 |(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
249 (% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:#037691" %)**OTA mode**(%%) for 3 seconds. And then start to attach NB-IoT network.
250 (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
251 Once sensor is active, BLE module will be active and user can connect via BLE to configure device, no matter if device attach NB-IoT network or not.
252 )))
253 |(% style="width:167px" %)Fast press ACT 5 times.|(% style="width:117px" %)Deactivate Device|(% style="width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means device is in Deep Sleep Mode.
254
255 == 1.10 BLE connection ==
256
257
258 DDS20-NB support BLE remote configure and firmware update.
259
260
261 BLE can be used to configure the parameter of sensor or see the console output from sensor. BLE will be only activate on below case:
262
263 * Press button to send an uplink
264 * Press button to active device.
265 * Device Power on or reset.
266
267 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
268
269
270 == 1.11 Pin Definitions & Switch ==
271
272
273 [[image:image-20230819104805-5.png]]
274
275
276 === 1.11.1 Jumper JP2 ===
277
278
279 Power on Device when put this jumper.
280
281
282 === 1.11.2 BOOT MODE / SW1 ===
283
284
285 **1)** (% style="color:blue" %)**ISP**(%%): upgrade mode, device won't have any signal in this mode. but ready for upgrade firmware. LED won't work. Firmware won't run.
286
287 **2)** (% style="color:blue" %)**Flash**(%%): work mode, device starts to work and send out console output for further debug
288
289
290 === 1.11.3 Reset Button ===
291
292
293 Press to reboot the device.
294
295 (% style="display:none" %)
296
297
298 == 1.12 Mechanical ==
299
300
301 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675143884058-338.png?rev=1.1||alt="1675143884058-338.png"]]
302
303 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675143899218-599.png?rev=1.1||alt="1675143899218-599.png"]]
304
305 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675143909447-639.png?rev=1.1||alt="1675143909447-639.png"]]
306
307
308 (% style="color:blue" %)**Probe Mechanical:**
309
310 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615090910-1.png?rev=1.1||alt="image-20220615090910-1.png"]]
311
312 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615090910-2.png?rev=1.1||alt="image-20220615090910-2.png"]]
313
314
315 = 2. Use DDS20-NB to communicate with IoT Server =
316
317 == 2.1 Send data to IoT server via NB-IoT network ==
318
319
320 The DDS20-NB is equipped with a NB-IoT module, the pre-loaded firmware in DDS20-NB will get environment data from sensors and send the value to local NB-IoT network via the NB-IoT module.  The NB-IoT network will forward this value to IoT server via the protocol defined by DDS20-NB.
321
322
323 Below shows the network structure:
324
325 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/DDS20-NB_NB-IoT_Ultrasonic_Liquid_Level_Sensor_User_Manual/WebHome/image-20230911140426-2.png?width=951&height=320&rev=1.1||alt="image-20230911140426-2.png"]]
326
327
328 There are two version: (% style="color:blue" %)**-GE**(%%) and (% style="color:blue" %)**-1D**(%%) version of DDS20-NB.
329
330
331 (% style="color:blue" %)**GE Version**(%%): This version doesn't include SIM card or point to any IoT server. User needs to use AT Commands to configure below two steps to set DDS20-NB send data to IoT server.
332
333 * Install NB-IoT SIM card and configure APN. See instruction of [[Attach Network>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H2.AttachNetwork]].
334
335 * Set up sensor to point to IoT Server. See instruction of [[Configure to Connect Different Servers>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.Configuretoconnecttodifferentservers]]. 
336
337 Below shows result of different server as a glance.
338
339 (% border="1" cellspacing="4" style="width:515px" %)
340 |(% style="background-color:#4f81bd; color:white; width:100px" %)**Servers**|(% style="background-color:#4f81bd; color:white; width:300px" %)**Dash Board**|(% style="background-color:#4f81bd; color:white; width:115px" %)**Comments**
341 |(% style="width:127px" %)[[Node-Red>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.5A0Node-RedA028viaA0MQTT29]]|(% style="width:385px" %)(((
342 (% style="text-align:center" %)
343 [[image:image-20230819113244-8.png||height="183" width="367"]]
344 )))|(% style="width:170px" %)
345 |(% style="width:127px" %)[[DataCake>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.4Datacake]]|(% style="width:385px" %)(((
346 (% style="text-align:center" %)
347 [[image:image-20230819113244-9.png||height="119" width="367"]]
348 )))|(% style="width:170px" %)
349 |(% style="width:127px" %)[[Tago.IO>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.7A0Tago.ioA028viaA0MQTT29]]|(% style="width:385px" %) |(% style="width:170px" %)
350 |(% style="width:127px" %)[[General UDP>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.1GeneralA0UDPA0Connection]]|(% style="width:385px" %)Raw Payload. Need Developer to design Dash Board|(% style="width:170px" %)
351 |(% style="width:127px" %)[[General MQTT>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.2GeneralA0MQTTA0Connection]]|(% style="width:385px" %)Raw Payload. Need Developer to design Dash Board|(% style="width:170px" %)
352 |(% style="width:127px" %)[[ThingSpeak>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.3A0ThingSpeakA028viaA0MQTT29]]|(% style="width:385px" %)(((
353 (% style="text-align:center" %)
354 [[image:image-20230819113244-10.png||height="104" width="367"]]
355 )))|(% style="width:170px" %)
356 |(% style="width:127px" %)[[ThingsBoard>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.6A0ThingsBoard.CloudA028viaA0MQTT29]]|(% style="width:385px" %)(((
357 (% style="text-align:center" %)
358 [[image:image-20230819113244-11.png||height="141" width="367"]]
359 )))|(% style="width:170px" %)
360
361 (% style="color:blue" %)**1D Version**(%%): This version has 1NCE SIM card pre-installed and configure to send value to DataCake. User Just need to select the sensor type in DataCake and Activate DDS20-NB and user will be able to see data in DataCake. See here for [[DataCake Config Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.4Datacake]].
362
363
364 == 2.2 ​Payload Types ==
365
366
367 To meet different server requirement, DDS20-NB supports different payload type.
368
369 **Includes:**
370
371 * [[General JSON format payload>>||anchor="H2.2.1GeneralJsonFormat28Type3D529"]]. (Type=5)
372
373 * [[HEX format Payload>>||anchor="H2.2.2HEXformatPayload28Type3D029"]]. (Type=0)
374
375 * [[ThingSpeak Format>>||anchor="H2.2.4ThingSpeakPayload28Type3D129"]]. (Type=1)
376
377 * [[ThingsBoard Format>>||anchor="H2.2.3ThingsBoardPayload28Type3D329"]]. (Type=3)
378
379 User can specify the payload type when choose the connection protocol. Example:
380
381 (% style="color:#037691" %)**AT+PRO=2,0**  (%%) ~/~/ Use UDP Connection & hex Payload
382
383 (% style="color:#037691" %)**AT+PRO=2,5**   (%%) ~/~/ Use UDP Connection & Json Payload
384
385 (% style="color:#037691" %)**AT+PRO=3,5 ** (%%) ~/~/ Use MQTT Connection & Json Payload
386
387
388 === 2.2.1 General Json Format(Type~=5) ===
389
390
391 This is the General Json Format. As below:
392
393 (% style="color:#4472c4" %)**{"IMEI":866207053462762,"temperature":29.2,"humidity":54.2,"battery":3.27,"signal":24,"Model":DDS20-NB, "1":{28.2,48.3,2023/08/10 08:00:37},"2":{28.1,49.1,2023/08/10 07:57:37},"3":{28.1,48.5,2023/08/10 07:54:37},"4":{28.2,48.6,2023/08/10 07:51:37},"5":{28.1,48.9,2023/08/10 07:48:37},"6":{28.2,48.8,2023/08/10 07:45:37},"7":{28.2,48.8,2023/08/10 07:42:37},"8":{28.0,48.8,2023/08/10 07:39:37}}**
394
395
396 (% style="color:red" %)**Notice, from above payload:**
397
398 * Temperature , Humidity , Battery & Signal are the value at uplink time.
399
400 * Json entry 1 ~~ 8 are the last 1 ~~ 8 sampling data as specify by (% style="color:#037691" %)**AT+NOUD=8 ** (%%)Command. Each entry includes (from left to right): Temperature, Humidity, Sampling time.
401
402 === 2.2.2 HEX format Payload(Type~=0) ===
403
404
405 This is the HEX Format. As below:
406
407 (% style="color:#4472c4" %)**f86620705346276200640cba16010000000011011801e864d49c2d011a01e364d49925011901eb64d49871011901e564d497bd011a01e664d49709011901e964d49655011a01e864d495a1011a01e864d494ed011801e864d49439**
408
409 [[image:1692424009971-458.png]]
410
411
412 (% style="color:blue" %)**Version:**
413
414 These bytes include the hardware and software version.
415
416 (% style="color:#037691" %)**Higher byte:**(%%) Specify Sensor Model: 0x00 for DDS20-NB
417
418 (% style="color:#037691" %)**Lower byte:**(%%) Specify the software version: 0x64=100, means firmware version 100
419
420
421 (% style="color:blue" %)**BAT (Battery Info):**
422
423 Ex1: 0x0CBA = 3258mV
424
425
426 (% style="color:blue" %)**Signal Strength:**
427
428 NB-IoT Network signal Strength.
429
430 **Ex1: 0x16 = 22**
431
432 **0**  -113dBm or less
433
434 **1**  -111dBm
435
436 **2...30** -109dBm... -53dBm
437
438 **31**   -51dBm or greater
439
440 **99**    Not known or not detectable
441
442
443 (% style="color:blue" %)**TimeStamp:   **
444
445 Unit TimeStamp Example: 64d49439(H) = 1691653177(D)
446
447 Put the decimal value into this link(https:~/~/www.epochconverter.com/) to get the time.
448
449
450 === 2.2.3 ThingsBoard Payload(Type~=3) ===
451
452
453 Type3 payload special design for ThingsBoard, it will also configure other default server to ThingsBoard.
454
455 (% style="color:#4472c4" %)**{"IMEI":866207053462762,"temperature":29.2,"humidity":54.2,"battery":3.27,"signal":24}**
456
457
458 === 2.2.4 ThingSpeak Payload(Type~=1) ===
459
460
461 This payload meets ThingSpeak platform requirement. It includes only four fields. Form 1~~4 are:
462
463 Temperature, Humidity, Battery & Signal. This payload type only valid for ThingsSpeak Platform
464
465 As below:
466
467 (% style="color:#4472c4" %)**field1=27.9&field2=49.9&field3=3.23&field4=28**
468
469
470 == 2.3 Test Uplink and Change Update Interval ==
471
472
473 By default, Sensor will send uplinks (% style="color:blue" %)**every 2 hours**(%%) & AT+NOUD=8
474
475 User can use below commands to change the (% style="color:blue" %)**uplink interval**.
476
477 (% style="color:#037691" %)**AT+TDC=600 ** (%%) ~/~/ Set Update Interval to 600s
478
479 User can also push the button for more than 1 seconds to activate an uplink.
480
481
482 == 2.4 Multi-Samplings and One uplink ==
483
484
485 To save battery life, DDS20-NB will sample temperature & humidity data every 15 minutes and send one uplink every 2 hours. So each uplink it will include 8 stored data + 1 real-time data. They are defined by:
486
487 * (% style="color:#037691" %)**AT+TR=900**   (%%) ~/~/ The unit is seconds, and the default is to record data once every 900 seconds (15 minutes, the minimum can be set to 180 seconds)
488
489 * (% style="color:#037691" %)**AT+NOUD=8**     (%%)~/~/  The device uploads 8 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
490
491 The diagram below explains the relationship between TR, NOUD, and TDC more clearly:
492
493 [[image:1692424376354-959.png]]
494
495
496 == 2.5 Trggier an uplink by external interrupt ==
497
498
499 DDS20-NB has an external trigger interrupt function. Users can use the PB15 pin to trigger the upload of data packets.
500
501 (% style="color:blue" %)**AT command:**
502
503 * (% style="color:#037691" %)**AT+INTMOD **(%%) ~/~/ Set the trigger interrupt mode
504
505 * (% style="color:#037691" %)**AT+INTMOD=0 **(%%) ~/~/ Disable Interrupt
506
507 * (% style="color:#037691" %)**AT+INTMOD=1 **(%%) ~/~/ Trigger by rising and falling edge
508
509 * (% style="color:#037691" %)**AT+INTMOD=2 **(%%) ~/~/ Trigger by falling edge
510
511 * (% style="color:#037691" %)**AT+INTMOD=3  **(%%) ~/~/ Trigger by rising edge
512
513 = 3. Configure DDS20-NB =
514
515 == 3.1 Configure Methods ==
516
517
518 DDS20-NB supports below configure method:
519
520 * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
521
522 * AT Command via UART Connection : See [[UART Connection>>http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H2.3UARTConnectionforSN50v3basemotherboard]].
523
524 == 3.2 AT Commands Set ==
525
526
527 AT+<CMD>?        : Help on <CMD>
528
529 AT+<CMD>         : Run <CMD>
530
531 AT+<CMD>=<value> : Set the value
532
533 AT+<CMD>=?       : Get the value
534
535
536 (% style="color:blue" %)**General Commands**      
537
538 AT                    : Attention       
539
540 AT?  : Short Help     
541
542 ATZ  : MCU Reset    
543
544 AT+TDC  : Application Data Transmission Interval
545
546 AT+CFG  : Print all configurations
547
548 AT+CFGMOD           : Working mode selection
549
550 AT+DEUI  : Get or set the Device ID
551
552 AT+INTMOD            : Set the trigger interrupt mode
553
554 AT+5VT           : Set extend the time of 5V power  
555
556 AT+PRO          : Choose agreement
557
558 AT+RXDL  : Extend the sending and receiving time
559
560 AT+DNSCFG  : Get or Set DNS Server
561
562 AT+GETSENSORVALUE   : Returns the current sensor measurement
563
564 AT+NOUD  : Get or Set the number of data to be uploaded
565
566 AT+CDP     : Read or Clear cached data
567
568 AT+SHTEMP:  Get or Set alarm of temp
569
570 AT+SHHUM:  Get or Set alarm of moisture
571
572 AT+SERVADDR :  Server Address
573
574
575 (% style="color:blue" %)**UDP Management**
576
577 AT+CFM  :  Upload confirmation mode (only valid for UDP)
578
579
580 (% style="color:blue" %)**MQTT Management**
581
582 AT+CLIENT               : Get or Set MQTT client
583
584 AT+UNAME              : Get or Set MQTT Username
585
586 AT+PWD                  : Get or Set MQTT password
587
588 AT+PUBTOPIC  : Get or Set MQTT publish topic
589
590 AT+SUBTOPIC  : Get or Set MQTT subscription topic
591
592
593 (% style="color:blue" %)**Information**          
594
595 AT+FDR  : Factory Data Reset
596
597 AT+PWORD  : Serial Access Password
598
599 AT+LDATA  : Get the last upload data
600
601 AT+CDP  : Read or Clear cached data
602
603
604 = 4. Battery & Power Consumption =
605
606
607 DDS20-NB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
608
609 [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
610
611
612 = 5. Firmware update =
613
614
615 User can change device firmware to::
616
617 * Update with new features.
618
619 * Fix bugs.
620
621 Firmware and changelog can be downloaded from : **[[Firmware download link>>https://www.dropbox.com/sh/fhb3uyl4gt6clru/AAAiZVTFcxrfE1JOOyfcgO9ha?dl=0]]**
622
623 Methods to Update Firmware:
624
625 * (Recommended way) OTA firmware update via BLE: [[**Instruction**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/BLE_Firmware_Update_NB_Sensors_BC660K-GL/]].
626
627 * Update through UART TTL interface : **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]**.
628
629 = 6. FAQ =
630
631 == 6.1 How can I access t BC660K-GL AT Commands? ==
632
633
634 User can access to BC660K-GL directly and send AT Commands.
635
636 [[See BC660K-GL AT Command set>>url:https://www.dropbox.com/sh/5f6ssda5fum8rvs/AABT68l8ZzWOvZ5eg2qwOoFda?dl=0]]
637
638
639 = 7. Order Info =
640
641
642 Part Number: (% style="color:blue" %)**DDS20-NB-XX**
643
644 (% style="color:red" %)**XX**(%%):
645
646 * (% style="color:#037691" %)**GE**(%%): General version ( Exclude SIM card)
647
648 * (% style="color:#037691" %)**1D**(%%): with 1NCE* 10 years 500MB SIM card and Pre-configure to DataCake server
649
650 (% style="color:#037691" %)**1NCE SIM Card NB-IoT network coverage**(%%): Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Finland, Germany, Great Britain, Greece, Hungary, Ireland, Italy, Latvia, Malta, Netherlands, Norway, Puerto Rico, Russia, Slovak , Republic, Slovenia, Spain, Sweden, Switzerland, Taiwan, USA, US Virgin Islands
651
652
653 = 8. ​Packing Info =
654
655
656 (% style="color:#037691" %)**Package Includes**:
657
658 * DDS20-NB NB-IoT Ultrasonic liquid level sensor x 1
659
660 * External antenna x 1
661
662 (% style="color:#037691" %)**Dimension and weight**:
663
664 * Device Size: 13.0 x 5 x 4.5 cm
665
666 * Device Weight: 150g
667
668 * Package Size / pcs : 14.0 x 8x 5 cm
669
670 * Weight / pcs : 180g
671
672 = 9. Support =
673
674
675 * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
676
677 * Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[Support@dragino.cc>>mailto:Support@dragino.cc]].
678
679 (% style="display:none" %) (%%)