Last modified by Xiaoling on 2024/01/15 09:53
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4 [[image:image-20240106085949-2.png]]
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14 **Table of Contents :**
15
16 {{toc/}}
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21
22
23 = 1. Introduction =
24
25 == 1.1 What is LoRaWAN Ultrasonic liquid level Sensor ==
26
27
28 The Dragino DDS20-LB/LS is a (% style="color:blue" %)**LoRaWAN 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 the value via LoRaWAN network to IoT Server.
29
30 The DDS20-LB/LS 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. 
31
32 DDS20-LB/LS uses (% style="color:blue" %)**ultrasonic sensing technology**(%%) for distance measurement. DDS20-LB/LS is of high accuracy to measure various liquid such as: (% style="color:blue" %)**toxic substances**(%%), (% style="color:blue" %)**strong acids**(%%), (% style="color:blue" %)**strong alkalis**(%%) and (% style="color:blue" %)**various pure liquids**(%%) in high-temperature and high-pressure airtight containers.
33
34 The LoRa wireless technology used in DDS20-LB/LS allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
35
36 DDS20-LB/LS (% style="color:blue" %)**supports BLE configure**(%%) and (% style="color:blue" %)**wireless OTA update**(%%) which make user easy to use.
37
38 DDS20-LB/LS is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery **(%%)or (% style="color:blue" %)**solar powered + li-on battery**(%%) , it is designed for long term use up to 5 years.
39
40 Each DDS20-LB/LS is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.
41
42 [[image:image-20230613140115-3.png||height="453" width="800"]]
43
44
45 == 1.2 ​Features ==
46
47
48 * LoRaWAN 1.0.3 Class A
49 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
50 * Ultra-low power consumption
51 * Liquid Level Measurement by Ultrasonic technology
52 * Measure through container, No need to contact Liquid
53 * Valid level range 20mm - 2000mm
54 * Accuracy: ±(5mm+S*0.5%) (S: Measure Value)
55 * Cable Length : 25cm
56 * Support Bluetooth v5.1 and LoRaWAN remote configure
57 * Support wireless OTA update firmware
58 * AT Commands to change parameters
59 * Downlink to change configure
60 * IP66 Waterproof Enclosure
61 * 8500mAh Li/SOCl2 Battery (DDS20-LB)
62 * Solar panel + 3000mAh Li-on battery (DDS20-LS)
63
64 == 1.3 Specification ==
65
66
67 (% style="color:#037691" %)**Common DC Characteristics:**
68
69 * Supply Voltage: Built-in Battery , 2.5v ~~ 3.6v
70 * Operating Temperature: -40 ~~ 85°C
71
72 (% style="color:#037691" %)**LoRa Spec:**
73
74 * Frequency Range,  Band 1 (HF): 862 ~~ 1020 Mhz
75 * Max +22 dBm constant RF output vs.
76 * RX sensitivity: down to -139 dBm.
77 * Excellent blocking immunity
78
79 (% style="color:#037691" %)**Battery:**
80
81 * Li/SOCI2 un-chargeable battery
82 * Capacity: 8500mAh
83 * Self-Discharge: <1% / Year @ 25°C
84 * Max continuously current: 130mA
85 * Max boost current: 2A, 1 second
86
87 (% style="color:#037691" %)**Power Consumption**
88
89 * Sleep Mode: 5uA @ 3.3v
90 * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
91
92 == 1.4 Suitable Container & Liquid ==
93
94
95 * Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
96 * Container shape is regular, and surface is smooth.
97 * Container Thickness:
98 ** Pure metal material.  2~~8mm, best is 3~~5mm
99 ** Pure non metal material: <10 mm
100 * Pure liquid without irregular deposition.
101
102 (% style="display:none" %)
103
104 == 1.5 Install DDS20-LB/LS ==
105
106
107 (% style="color:blue" %)**Step 1**(%%):  ** Choose the installation point.**
108
109 DDS20-LB/LS (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
110
111 [[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"]]
112
113
114 (((
115 (% style="color:blue" %)**Step 2**(%%):  **Polish the installation point.**
116 )))
117
118 (((
119 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.
120 )))
121
122 [[image:image-20230613143052-5.png]]
123
124
125 No polish needed if the container is shine metal surface without paint or non-metal container.
126
127 [[image:image-20230613143125-6.png]]
128
129
130 (((
131 (% style="color:blue" %)**Step3:   **(%%)**Test the installation point.**
132 )))
133
134 (((
135 Power on DDS20-LB/LS, 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.
136 )))
137
138 (((
139 It is necessary to put the coupling paste between the sensor and the container, otherwise DDS20-LB/LS won't detect the liquid level.
140 )))
141
142 (((
143 After paste the DDS20-LB/LS well, power on DDS20-LB/LS. 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.
144 )))
145
146
147 (((
148 (% style="color:blue" %)**LED Status:**
149 )))
150
151 * (((
152 **Onboard LED**: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
153 )))
154
155 * (((
156 (% 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.
157 )))
158 * (((
159 (% style="color:blue" %)**BLUE LED**(% style="color:red" %)** slowly blinking**(%%): Sensor detects Liquid Level, The installation point is good.
160 )))
161
162 (((
163 DDS20-LB/LS will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
164 )))
165
166
167 (((
168 (% 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.
169 )))
170
171
172 (((
173 (% style="color:blue" %)**Step4:   **(%%)**Install use Epoxy ab glue.**
174
175
176 After ensuring that the ultrasonic coupling paste is applied to the sensor and adheres closely to the mounting point, and the sensor can work normally, add AB epoxy glue.
177
178 ((% style="color:red" %)**Note :**(%%) The ultrasonic coupling agent is used to help the sensor detect the liquid in the container, and the epoxy AB glue is used to fix the probe. Both need to be used at the same time.)
179 )))
180
181 (((
182 Prepare Eproxy AB glue.
183 )))
184
185 (((
186 Put Eproxy AB glue in the sensor and press it hard on the container installation point.
187 )))
188
189 (((
190 Reset DDS20-LB/LS and see if the BLUE LED is slowly blinking.
191 )))
192
193 [[image:image-20230809172509-1.png]]
194
195 (((
196 (% style="color:red" %)**Note :**(% style="color:red; display:none" %)** **
197
198 (% 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.
199 )))
200
201 (((
202 (% 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.
203 )))
204
205
206 == 1.6 Applications ==
207
208
209 * Smart liquid control solution
210
211 * Smart liquefied gas solution
212
213 == 1.7 Precautions ==
214
215
216 * 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.
217
218 * 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.
219
220 * 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.
221
222 (% style="display:none" %)
223
224 == 1.8 Sleep mode and working mode ==
225
226
227 (% 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.
228
229 (% 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.
230
231
232 == 1.9 Button & LEDs ==
233
234
235 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LB_Waterproof_RS485UART_to_LoRaWAN_Converter/WebHome/image-20240103160425-4.png?rev=1.1||alt="image-20240103160425-4.png"]]
236
237 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
238 |=(% 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**
239 |(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
240 If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
241 Meanwhile, BLE module will be active and user can connect via BLE to configure device.
242 )))
243 |(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
244 (% 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 JOIN LoRaWAN network.
245 (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
246 Once sensor is active, BLE module will be active and user can connect via BLE to configure device, no matter if device join or not join LoRaWAN network.
247 )))
248 |(% 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.
249
250 == 1.10 BLE connection ==
251
252
253 DDS20-LB/LS support BLE remote configure.
254
255 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:
256
257 * Press button to send an uplink
258 * Press button to active device.
259 * Device Power on or reset.
260
261 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
262
263
264 == 1.11 Pin Definitions ==
265
266
267 [[image:image-20230523174230-1.png]]
268
269
270 == 1.12 Mechanical ==
271
272 === 1.12.1 for LB version ===
273
274
275
276 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/DDS75-LB_LoRaWAN_Distance_Detection_Sensor_User_Manual/WebHome/image-20240105152536-3.png?rev=1.1||alt="image-20240105152536-3.png"]]
277
278
279
280
281 (% style="color:blue" %)**Probe Mechanical:**
282
283 [[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"]]
284
285
286 [[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"]]
287
288
289 === 1.12.2 for LS version ===
290
291
292 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SN50v3-LB/WebHome/image-20231231203439-3.png?width=886&height=385&rev=1.1||alt="image-20231231203439-3.png"]]
293
294
295 = 2. Configure DDS20-LB/LS to connect to LoRaWAN network =
296
297 == 2.1 How it works ==
298
299
300 The DDS20-LB/LS is configured as (% style="color:#037691" %)**LoRaWAN OTAA Class A**(%%) mode by default. It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and press the button to activate the DDS20-LB/LS. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.
301
302 (% style="display:none" %) (%%)
303
304 == 2.2 ​Quick guide to connect to LoRaWAN server (OTAA) ==
305
306
307 Following is an example for how to join the [[TTN v3 LoRaWAN Network>>url:https://console.cloud.thethings.network/]]. Below is the network structure; we use the [[LPS8v2>>url:https://www.dragino.com/products/lora-lorawan-gateway/item/228-lps8v2.html]] as a LoRaWAN gateway in this example.
308
309 The LPS8v2 is already set to connected to [[TTN network >>url:https://console.cloud.thethings.network/]], so what we need to now is configure the TTN server.
310
311 [[image:image-20230613140140-4.png||height="453" width="800"]](% style="display:none" %)
312
313
314 (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DDS20-LB/LS.
315
316 Each DDS20-LB/LS is shipped with a sticker with the default device EUI as below:
317
318 [[image:image-20230426084152-1.png||alt="图片-20230426084152-1.png" height="233" width="502"]]
319
320
321 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
322
323
324 (% style="color:blue" %)**Register the device**
325
326 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/1654935135620-998.png?rev=1.1||alt="1654935135620-998.png"]]
327
328
329 (% style="color:blue" %)**Add APP EUI and DEV EUI**
330
331 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-4.png?width=753&height=551&rev=1.1||alt="图片-20220611161308-4.png"]]
332
333
334 (% style="color:blue" %)**Add APP EUI in the application**
335
336
337 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-5.png?width=742&height=601&rev=1.1||alt="图片-20220611161308-5.png"]]
338
339
340 (% style="color:blue" %)**Add APP KEY**
341
342 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-6.png?width=744&height=485&rev=1.1||alt="图片-20220611161308-6.png"]]
343
344
345 (% style="color:blue" %)**Step 2:**(%%) Activate on DDS20-LB/LS
346
347
348 Press the button for 5 seconds to activate the DDS20-LB/LS.
349
350 (% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:blue" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network. (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
351
352 After join success, it will start to upload messages to TTN and you can see the messages in the panel.
353
354
355 == 2.3  ​Uplink Payload ==
356
357
358 (((
359 DDS20-LB/LS will uplink payload via LoRaWAN with below payload format: 
360 )))
361
362 (((
363 Uplink payload includes in total 8 bytes.
364 )))
365
366 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
367 |=(% style="width: 95px; background-color:#4F81BD;color:white" %)(% style="display:none" %) (%%)Size(bytes)|=(% style="width: 61px; background-color:#4F81BD;color:white" %)2|=(% style="background-color:#4F81BD;color:white" %)2|=(% style="background-color:#4F81BD;color:white" %)1|=(% style="background-color:#4F81BD;color:white" %)2|=(% style="background-color:#4F81BD;color:white" %)1
368 |(% style="width:95px" %)Value|(% style="width:61px" %)[[BAT>>||anchor="H2.3.2A0BatteryInfo"]]|(((
369 [[Distance>>||anchor="H2.3.3A0Distance"]]
370 (unit: mm)
371 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.4A0InterruptPin"]]|(((
372 [[Temperature (Optional)>>||anchor="H2.3.5A0DS18B20Temperaturesensor"]]
373 )))|[[Sensor Flag>>||anchor="H2.3.6A0SensorFlag"]]
374
375 [[image:微信截图_20230702135733.png||height="215" width="964"]]
376
377
378 === 2.3.1 Device Status, FPORT~=5 ===
379
380
381 (((
382 Users can use the downlink command(**0x26 01**) to ask DDS20-LB/LS to send device configure detail, include device configure status. DDS20-LB/LS will uplink a payload via FPort=5 to server.
383
384 The Payload format is as below.
385 )))
386
387 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:490px" %)
388 |=(% colspan="6" style="background-color:#4F81BD;color:white" %)Device Status (FPORT=5)
389 |(% style="width:60px" %)**Size(bytes)**|(% style="width:80px" %)**1**|(% style="width:140px" %)**2**|(% style="width:140px" %)**1**|(% style="width:70px" %)**1**|(% style="width:70px" %)**2**
390 |(% style="width:94px" %)Value|(% style="width:68px" %)Sensor Model|(% style="width:80px" %)Firmware Version|(% style="width:86px" %)Frequency Band|(% style="width:61px" %)Sub-band|(% style="width:61px" %)BAT
391
392 [[image:DDS20.png||height="241" width="1336"]]
393
394
395 (% style="color:#037691" %)**Sensor Model**(%%)**:** For DDS20-LB/LS, this value is 0x29
396
397 (% style="color:#037691" %)**Firmware Version**(%%)**:** 0x0100, Means: v1.0.0 version
398
399 (% style="color:#037691" %)**Frequency Band**(%%)**:**
400
401 0x01: EU868
402
403 0x02: US915
404
405 0x03: IN865
406
407 0x04: AU915
408
409 0x05: KZ865
410
411 0x06: RU864
412
413 0x07: AS923
414
415 0x08: AS923-1
416
417 0x09: AS923-2
418
419 0x0a: AS923-3
420
421 0x0b: CN470
422
423 0x0c: EU433
424
425 0x0d: KR920
426
427 0x0e: MA869
428
429
430 (% style="color:#037691" %)**Sub-Band**(%%)**:**
431
432 AU915 and US915: value 0x00 ~~ 0x08
433
434 CN470: value 0x0B ~~ 0x0C
435
436 Other Bands: Always 0x00
437
438
439 (% style="color:#037691" %)**Battery Info:**
440
441 Check the battery voltage.
442
443 Ex1: 0x0B45 = 2885mV
444
445 Ex2: 0x0B49 = 2889mV
446
447
448 === 2.3.2  Battery Info ===
449
450
451 Check the battery voltage for DDS20-LB/LS.
452
453 Ex1: 0x0B45 = 2885mV
454
455 Ex2: 0x0B49 = 2889mV
456
457
458 === 2.3.3  Distance ===
459
460
461 (((
462 Get the distance. Flat object range 20mm - 2000mm.
463 )))
464
465 (((
466 For example, if the data you get from the register is **0x06 0x05**, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** **
467
468 (% style="color:blue" %)**0605(H) = 1541 (D) = 1541 mm.**
469 )))
470
471 * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
472
473 * If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
474
475 === 2.3.4  Interrupt Pin ===
476
477
478 This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3.2SetInterruptMode"]] for the hardware and software set up.
479
480 **Example:**
481
482 0x00: Normal uplink packet.
483
484 0x01: Interrupt Uplink Packet.
485
486
487 === 2.3.5  DS18B20 Temperature sensor ===
488
489
490 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
491
492 **Example**:
493
494 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
495
496 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
497
498
499 === 2.3.6  Sensor Flag ===
500
501
502 (((
503 0x01: Detect Ultrasonic Sensor
504 )))
505
506 (((
507 0x00: No Ultrasonic Sensor
508 )))
509
510
511 === 2.3.7  Decode payload in The Things Network ===
512
513
514 While using TTN network, you can add the payload format to decode the payload.
515
516 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654850829385-439.png?rev=1.1||alt="1654850829385-439.png"]]
517
518 The payload decoder function for TTN V3 is here:
519
520 (((
521 DDS20-LB/LS TTN V3 Payload Decoder:  [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
522 )))
523
524
525 == 2.4  Uplink Interval ==
526
527
528 The DDS20-LB/LS by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link: [[Change Uplink Interval>>||anchor="H3.3.1SetTransmitIntervalTime"]]
529
530
531 == 2.5  ​Show Data in DataCake IoT Server ==
532
533
534 (((
535 [[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, once we have data in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps:
536 )))
537
538
539 (((
540 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
541 )))
542
543 (((
544 (% style="color:blue" %)**Step 2**(%%)**: To configure the Application to forward data to DATACAKE you will need to add integration. To add the DATACAKE integration, perform the following steps:**
545 )))
546
547
548 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654592790040-760.png?rev=1.1||alt="1654592790040-760.png"]]
549
550
551 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654592800389-571.png?rev=1.1||alt="1654592800389-571.png"]]
552
553
554 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
555
556 (% style="color:blue" %)**Step 4**(%%)**: Search the DDS20-LB/LS and add DevEUI.**
557
558 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654851029373-510.png?rev=1.1||alt="1654851029373-510.png"]]
559
560
561 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
562
563 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/image-20220610165129-11.png?width=1088&height=595&rev=1.1||alt="image-20220610165129-11.png"]]
564
565
566 == 2.6 Datalog Feature ==
567
568
569 Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, DDS20-LB/LS will store the reading for future retrieving purposes.
570
571
572 === 2.6.1 Ways to get datalog via LoRaWAN ===
573
574
575 Set PNACKMD=1, DDS20-LB/LS will wait for ACK for every uplink, when there is no LoRaWAN network, DDS20-LB/LS will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
576
577 * (((
578 a) DDS20-LB/LS will do an ACK check for data records sending to make sure every data arrive server.
579 )))
580 * (((
581 b) DDS20-LB/LS will send data in **CONFIRMED Mode** when PNACKMD=1, but DDS20-LB/LS won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if DDS20-LB/LS gets a ACK, DDS20-LB/LS will consider there is a network connection and resend all NONE-ACK messages.
582 )))
583
584 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
585
586 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220703111700-2.png?width=1119&height=381&rev=1.1||alt="图片-20220703111700-2.png" height="381" width="1119"]]
587
588
589 === 2.6.2 Unix TimeStamp ===
590
591
592 DDS20-LB/LS uses Unix TimeStamp format based on
593
594 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220523001219-11.png?width=627&height=97&rev=1.1||alt="图片-20220523001219-11.png" height="97" width="627"]]
595
596 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
597
598 Below is the converter example
599
600 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220523001219-12.png?width=720&height=298&rev=1.1||alt="图片-20220523001219-12.png" height="298" width="720"]]
601
602
603 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
604
605
606 === 2.6.3 Set Device Time ===
607
608
609 User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command.
610
611 Once DDS20-LB/LS Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to DDS20-LB/LS. If DDS20-LB/LS fails to get the time from the server, DDS20-LB/LS will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
612
613 (% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**
614
615
616 === 2.6.4 Poll sensor value ===
617
618
619 Users can poll sensor values based on timestamps. Below is the downlink command.
620
621 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:425.818px" %)
622 |(% colspan="4" style="background-color:#4f81bd; color:white; width:423px" %)**Downlink Command to poll Open/Close status (0x31)**
623 |(% style="width:58px" %)**1byte**|(% style="width:127px" %)**4bytes**|(% style="width:124px" %)**4bytes**|(% style="width:114px" %)**1byte**
624 |(% style="width:58px" %)31|(% style="width:127px" %)Timestamp start|(% style="width:124px" %)Timestamp end|(% style="width:114px" %)Uplink Interval
625
626 (((
627 Timestamp start and Timestamp end-use Unix TimeStamp format as mentioned above. Devices will reply with all data logs during this period, using the uplink interval.
628 )))
629
630 (((
631 For example, downlink command [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/CPL01%20LoRaWAN%20Outdoor%20PulseContact%20%20Sensor%20Manual/WebHome/image-20220518162852-1.png?rev=1.1||alt="image-20220518162852-1.png"]]
632 )))
633
634 (((
635 Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00's data
636 )))
637
638 (((
639 Uplink Internal =5s，means DDS20-LB/LS will send one packet every 5s. range 5~~255s.
640 )))
641
642
643 == 2.7 Frequency Plans ==
644
645
646 The DDS20-LB/LS uses OTAA mode and below frequency plans by default. Each frequency band use different firmware, user update the firmware to the corresponding band for their country.
647
648 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
649
650
651 = 3. Configure DDS20-LB/LS =
652
653 == 3.1 Configure Methods ==
654
655
656 DDS20-LB/LS supports below configure method:
657
658 * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
659
660 * 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]].
661
662 * LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
663
664 == 3.2 General Commands ==
665
666
667 These commands are to configure:
668
669 * General system settings like: uplink interval.
670
671 * LoRaWAN protocol & radio related command.
672
673 They are same for all Dragino Devices which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:
674
675 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]
676
677
678 == 3.3 Commands special design for DDS20-LB/LS ==
679
680
681 These commands only valid for DDS20-LB/LS, as below:
682
683
684 === 3.3.1 Set Transmit Interval Time ===
685
686
687 (((
688 Feature: Change LoRaWAN End Node Transmit Interval.
689 )))
690
691 (((
692 (% style="color:blue" %)**AT Command: AT+TDC**
693 )))
694
695 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
696 |=(% style="width: 156px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 137px;background-color:#4F81BD;color:white" %)**Function**|=(% style="background-color:#4F81BD;color:white" %)**Response**
697 |(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((
698 30000
699 OK
700 the interval is 30000ms = 30s
701 )))
702 |(% style="width:156px" %)AT+TDC=60000|(% style="width:137px" %)Set Transmit Interval|(((
703 OK
704 Set transmit interval to 60000ms = 60 seconds
705 )))
706
707 (((
708 (% style="color:blue" %)**Downlink Command: 0x01**
709 )))
710
711 (((
712 Format: Command Code (0x01) followed by 3 bytes time value.
713 )))
714
715 (((
716 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
717 )))
718
719 * (((
720 Example 1: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
721 )))
722 * (((
723 Example 2: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds 
724
725
726
727 )))
728
729 === 3.3.2 Set Interrupt Mode ===
730
731
732 Feature, Set Interrupt mode for GPIO_EXTI of pin.
733
734 When AT+INTMOD=0 is set, GPIO_EXTI is used as a digital input port.
735
736 (% style="color:blue" %)**AT Command: AT+INTMOD**
737
738 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
739 |=(% style="width: 155px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 197px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 158px;background-color:#4F81BD;color:white" %)**Response**
740 |(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
741 0
742 OK
743 the mode is 0 =Disable Interrupt
744 )))
745 |(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
746 Set Transmit Interval
747 0. (Disable Interrupt),
748 ~1. (Trigger by rising and falling edge)
749 2. (Trigger by falling edge)
750 3. (Trigger by rising edge)
751 )))|(% style="width:157px" %)OK
752
753 (% style="color:blue" %)**Downlink Command: 0x06**
754
755 Format: Command Code (0x06) followed by 3 bytes.
756
757 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
758
759 * Example 1: Downlink Payload: 06000000  ~/~/  Turn off interrupt mode
760
761 * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
762
763 = 4. Battery & Power Consumption =
764
765
766 DDS20-LB use ER26500 + SPC1520 battery pack and DDS20-LS use 3000mAh Recharable Battery with Solar Panel. See below link for detail information about the battery info and how to replace.
767
768 [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
769
770
771 = 5. OTA Firmware update =
772
773
774 (% class="wikigeneratedid" %)
775 User can change firmware DDS20-LB/LS to:
776
777 * Change Frequency band/ region.
778
779 * Update with new features.
780
781 * Fix bugs.
782
783 Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/ph4uyz0rchflrnw/AADr1f_5Sg30804NItpfOQbla?dl=0]]**
784
785 Methods to Update Firmware:
786
787 * (Recommanded way) OTA firmware update via wireless:  **[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]]**
788
789 * 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]]**.
790
791 = 6. FAQ =
792
793 == 6.1  What is the frequency plan for DDS20-LB/LS? ==
794
795
796 DDS20-LB/LS use the same frequency as other Dragino products. User can see the detail from this link:  [[Introduction>>doc:Main.End Device Frequency Band.WebHome||anchor="H1.Introduction"]]
797
798
799 == 6.2  Can I use DDS20-LB/LS in condensation environment? ==
800
801
802 DDS20-LB/LS is not suitable to be used in condensation environment. Condensation on the DDS20-LB/LS probe will affect the reading and always got 0.
803
804
805 = 7.  Trouble Shooting =
806
807 == 7.1  Why I can't join TTN V3 in US915 / AU915 bands? ==
808
809
810 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
811
812
813 == 7.2  AT Command input doesn't work ==
814
815
816 In the case if user can see the console output but can't type input to the device. Please check if you already include the (% style="color:blue" %)**ENTER**(%%) while sending out the command. Some serial tool doesn't send (% style="color:blue" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
817
818
819 == 7.3  Why i always see 0x0000 or 0 for the distance value? ==
820
821
822 (((
823 DDS20-LB/LS has a strict [[**installation requirement**>>||anchor="H1.5A0InstallDDS20-LB2FLS"]]. Please make sure the installation method exactly follows up with the installation requirement. Otherwise, the reading might be always 0x00.
824
825 If you have followed the instruction requirement exactly but still see the 0x00 reading issue, please. please double-check the decoder, you can check the raw payload to verify.
826 )))
827
828
829 = 8. Order Info =
830
831
832 **Part Number: (% style="color:blue" %)DDS20-LB-XX(%%) or (% style="color:blue" %)DDS20-LS-XX(%%)**
833
834 (% style="color:red" %)**XX**(%%): **The default frequency band**
835
836 * (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
837
838 * (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
839
840 * (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
841
842 * (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
843
844 * (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
845
846 * (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
847
848 * (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
849
850 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
851
852 = 9. ​Packing Info =
853
854
855 (% style="color:#037691" %)**Package Includes**:
856
857 * DDS20-LB or DDS20-LS LoRaWAN Ultrasonic Liquid Level Sensor x 1
858
859 (% style="color:#037691" %)**Dimension and weight**:
860
861 * Device Size: cm
862
863 * Device Weight: g
864
865 * Package Size / pcs : cm
866
867 * Weight / pcs : g
868
869 = 10. Support =
870
871
872 * 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.
873
874 * 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]].

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