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Version 80.3 by Xiaoling on 2023/06/14 15:53
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1 (% style="text-align:center" %)
2 [[image:image-20230614153353-1.png]]
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8
9
10 **Table of Contents：**
11
12 {{toc/}}
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17
18
19 = 1. Introduction =
20
21 == 1.1 What is LoRaWAN LiDAR ToF Distance Sensor ==
22
23
24 The Dragino LDS12-LB is a (% style="color:blue" %)**LoRaWAN LiDAR ToF (Time of Flight) Distance Sensor**(%%) for Internet of Things solution. It is capable to measure the distance to an object as close as 10 centimeters (+/- 5cm up to 6m) and as far as 12 meters (+/-1% starting at 6m)!. The LiDAR probe uses laser induction technology for distance measurement.
25
26 The LDS12-LB can be applied to scenarios such as horizontal distance measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, etc.
27
28 It detects the distance between the measured object and the sensor, and uploads the value via wireless to LoRaWAN IoT Server.
29
30 The LoRa wireless technology used in LDS12-LB 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.
31
32 LDS12-LB (% style="color:blue" %)**supports BLE configure**(%%) and (% style="color:blue" %)**wireless OTA update**(%%) which make user easy to use.
33
34 LDS12-LB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years.
35
36 Each LDS12-LB 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.
37
38 [[image:image-20230613140115-3.png||height="453" width="800"]]
39
40
41 == 1.2 ​Features ==
42
43
44 * LoRaWAN 1.0.3 Class A
45 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
46 * Ultra-low power consumption
47 * Liquid Level Measurement by Ultrasonic technology
48 * Measure through container, No need to contact Liquid
49 * Valid level range 20mm - 2000mm
50 * Accuracy: ±(5mm+S*0.5%) (S: Measure Value)
51 * Cable Length : 25cm
52 * Support Bluetooth v5.1 and LoRaWAN remote configure
53 * Support wireless OTA update firmware
54 * AT Commands to change parameters
55 * Downlink to change configure
56 * IP66 Waterproof Enclosure
57 * 8500mAh Battery for long term use
58
59
60 == 1.3 Specification ==
61
62
63 (% style="color:#037691" %)**Common DC Characteristics:**
64
65 * Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~~ 3.6v
66 * Operating Temperature: -40 ~~ 85°C
67
68 (% style="color:#037691" %)**LoRa Spec:**
69
70 * Frequency Range,  Band 1 (HF): 862 ~~ 1020 Mhz
71 * Max +22 dBm constant RF output vs.
72 * RX sensitivity: down to -139 dBm.
73 * Excellent blocking immunity
74
75 (% style="color:#037691" %)**Battery:**
76
77 * Li/SOCI2 un-chargeable battery
78 * Capacity: 8500mAh
79 * Self-Discharge: <1% / Year @ 25°C
80 * Max continuously current: 130mA
81 * Max boost current: 2A, 1 second
82
83 (% style="color:#037691" %)**Power Consumption**
84
85 * Sleep Mode: 5uA @ 3.3v
86 * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
87
88
89 == 1.4 Suitable Container & Liquid ==
90
91
92 * Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
93 * Container shape is regular, and surface is smooth.
94 * Container Thickness:
95 ** Pure metal material.  2~~8mm, best is 3~~5mm
96 ** Pure non metal material: <10 mm
97 * Pure liquid without irregular deposition.
98
99
100 (% style="display:none" %)
101
102 == 1.5 Install DDS20-LB ==
103
104
105 (% style="color:blue" %)**Step 1**(%%):  ** Choose the installation point.**
106
107 DDS20-LB (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
108
109 [[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"]]
110
111
112 (((
113 (% style="color:blue" %)**Step 2**(%%):  **Polish the installation point.**
114 )))
115
116 (((
117 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.
118 )))
119
120 [[image:image-20230613143052-5.png]]
121
122
123 No polish needed if the container is shine metal surface without paint or non-metal container.
124
125 [[image:image-20230613143125-6.png]]
126
127
128 (((
129 (% style="color:blue" %)**Step3:   **(%%)**Test the installation point.**
130 )))
131
132 (((
133 Power on DDS20-LB, 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.
134 )))
135
136 (((
137 It is necessary to put the coupling paste between the sensor and the container, otherwise DDS20-LB won't detect the liquid level.
138 )))
139
140 (((
141 After paste the DDS20-LB well, power on DDS20-LB. 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.
142 )))
143
144
145 (((
146 (% style="color:blue" %)**LED Status:**
147 )))
148
149 * (((
150 **Onboard LED**: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
151 )))
152
153 * (((
154 (% 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.
155 )))
156 * (((
157 (% style="color:blue" %)**BLUE LED**(% style="color:red" %)** slowly blinking**(%%): Sensor detects Liquid Level, The installation point is good.
158 )))
159
160 (((
161 LDDS20 will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
162 )))
163
164
165 (((
166 (% 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.
167 )))
168
169
170 (((
171 (% style="color:blue" %)**Step4:   **(%%)**Install use Epoxy ab glue.**
172 )))
173
174 (((
175 Prepare Eproxy AB glue.
176 )))
177
178 (((
179 Put Eproxy AB glue in the sensor and press it hard on the container installation point.
180 )))
181
182 (((
183 Reset DDS20-LB and see if the BLUE LED is slowly blinking.
184 )))
185
186 [[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-20220615091045-8.png?width=341&height=203&rev=1.1||alt="image-20220615091045-8.png"]] [[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-20220615091045-9.png?width=284&height=200&rev=1.1||alt="image-20220615091045-9.png"]]
187
188
189 (((
190 (% style="color:red" %)**Note :**
191
192 (% 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.
193 )))
194
195 (((
196 (% 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.
197 )))
198
199
200 == 1.6 Applications ==
201
202
203 * Smart liquid control solution
204
205 * Smart liquefied gas solution
206
207
208 == 1.7 Precautions ==
209
210
211 * 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.
212
213 * 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.
214
215 * 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.
216
217 (% style="display:none" %)
218
219 == 1.8 Sleep mode and working mode ==
220
221
222 (% 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.
223
224 (% 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.
225
226
227 == 1.9 Button & LEDs ==
228
229
230 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
231
232
233 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
234 |=(% style="width: 167px;background-color:#D9E2F3;color:#0070C0" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 225px;background-color:#D9E2F3;color:#0070C0" %)**Action**
235 |(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
236 If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
237 Meanwhile, BLE module will be active and user can connect via BLE to configure device.
238 )))
239 |(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
240 (% 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.
241 (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
242 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.
243 )))
244 |(% 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.
245
246
247 == 1.10 BLE connection ==
248
249
250 DDS20-LB support BLE remote configure.
251
252 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:
253
254 * Press button to send an uplink
255 * Press button to active device.
256 * Device Power on or reset.
257
258 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
259
260
261 == 1.11 Pin Definitions ==
262
263 [[image:image-20230523174230-1.png]]
264
265
266 == 1.12 Mechanical ==
267
268
269 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
270
271
272 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]
273
274
275 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]
276
277
278 (% style="color:blue" %)**Probe Mechanical:**
279
280 [[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"]]
281
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-20220615090910-2.png?rev=1.1||alt="image-20220615090910-2.png"]]
284
285
286 = 2. Configure DDS20-LB to connect to LoRaWAN network =
287
288 == 2.1 How it works ==
289
290
291 The DDS20-LB 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. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.
292
293 (% style="display:none" %) (%%)
294
295 == 2.2 ​Quick guide to connect to LoRaWAN server (OTAA) ==
296
297
298 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.
299
300 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.
301
302 [[image:image-20230613140140-4.png||height="453" width="800"]](% style="display:none" %)
303
304
305 (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DDS20-LB.
306
307 Each DDS20-LB is shipped with a sticker with the default device EUI as below:
308
309 [[image:image-20230426084152-1.png||alt="图片-20230426084152-1.png" height="233" width="502"]]
310
311
312 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
313
314
315 (% style="color:blue" %)**Register the device**
316
317 [[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"]]
318
319
320 (% style="color:blue" %)**Add APP EUI and DEV EUI**
321
322 [[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"]]
323
324
325 (% style="color:blue" %)**Add APP EUI in the application**
326
327
328 [[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"]]
329
330
331 (% style="color:blue" %)**Add APP KEY**
332
333 [[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"]]
334
335
336 (% style="color:blue" %)**Step 2:**(%%) Activate on DDS20-LB
337
338
339 Press the button for 5 seconds to activate the DDS20-LB.
340
341 (% 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.
342
343 After join success, it will start to upload messages to TTN and you can see the messages in the panel.
344
345
346 == 2.3  ​Uplink Payload ==
347
348
349 (((
350 DDS20-LB will uplink payload via LoRaWAN with below payload format: 
351 )))
352
353 (((
354 Uplink payload includes in total 8 bytes.
355 )))
356
357 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
358 |=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)(((
359 **Size(bytes)**
360 )))|=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="background-color:#D9E2F3;color:#0070C0" %)1|=(% style="background-color:#D9E2F3;color:#0070C0" %)2|=(% style="background-color:#D9E2F3;color:#0070C0" %)**1**
361 |(% style="width:62.5px" %)Value|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
362 [[Distance>>||anchor="H2.3.2A0Distance"]]
363 (unit: mm)
364 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
365 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
366 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
367
368 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/1654850511545-399.png?rev=1.1||alt="1654850511545-399.png"]]
369
370
371 === 2.3.1  Battery Info ===
372
373
374 Check the battery voltage for DDS20-LB.
375
376 Ex1: 0x0B45 = 2885mV
377
378 Ex2: 0x0B49 = 2889mV
379
380
381 === 2.3.2  Distance ===
382
383
384 (((
385 Get the distance. Flat object range 20mm - 2000mm.
386 )))
387
388 (((
389 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" %)** **
390
391 (% style="color:blue" %)**0605(H) = 1541 (D) = 1541 mm.**
392 )))
393
394 * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
395
396 * If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
397
398
399 === 2.3.3  Interrupt Pin ===
400
401
402 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.
403
404 **Example:**
405
406 0x00: Normal uplink packet.
407
408 0x01: Interrupt Uplink Packet.
409
410
411 === 2.3.4  DS18B20 Temperature sensor ===
412
413
414 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
415
416 **Example**:
417
418 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
419
420 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
421
422
423 === 2.3.5  Sensor Flag ===
424
425
426 (((
427 0x01: Detect Ultrasonic Sensor
428 )))
429
430 (((
431 0x00: No Ultrasonic Sensor
432 )))
433
434
435 === 2.3.6  Decode payload in The Things Network ===
436
437
438 While using TTN network, you can add the payload format to decode the payload.
439
440 [[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"]]
441
442 The payload decoder function for TTN V3 is here:
443
444 (((
445 DDS20-LB TTN V3 Payload Decoder:  [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
446 )))
447
448
449 == 2.4  Uplink Interval ==
450
451
452 The DDS20-LB 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"]]
453
454
455 == 2.5  ​Show Data in DataCake IoT Server ==
456
457
458 (((
459 [[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:
460 )))
461
462
463 (((
464 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
465 )))
466
467 (((
468 (% 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:**
469 )))
470
471
472 [[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"]]
473
474
475 [[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"]]
476
477
478 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
479
480 (% style="color:blue" %)**Step 4**(%%)**: Search the DDS20-LB and add DevEUI.**
481
482 [[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"]]
483
484
485 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
486
487 [[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"]]
488
489
490 == 2.6 Datalog Feature ==
491
492
493 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 will store the reading for future retrieving purposes.
494
495
496 === 2.6.1 Ways to get datalog via LoRaWAN ===
497
498
499 Set PNACKMD=1, DDS20-LB will wait for ACK for every uplink, when there is no LoRaWAN network,DDS20-LB 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.
500
501 * (((
502 a) DDS20-LB will do an ACK check for data records sending to make sure every data arrive server.
503 )))
504 * (((
505 b) DDS20-LB will send data in **CONFIRMED Mode** when PNACKMD=1, but DDS20-LB 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 gets a ACK, DDS20-LB will consider there is a network connection and resend all NONE-ACK messages.
506 )))
507
508 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
509
510 [[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"]]
511
512
513 === 2.6.2 Unix TimeStamp ===
514
515
516 DDS20-LB uses Unix TimeStamp format based on
517
518 [[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"]]
519
520 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
521
522 Below is the converter example
523
524 [[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"]]
525
526
527 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
528
529
530 === 2.6.3 Set Device Time ===
531
532
533 User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command.
534
535 Once DDS20-LB 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. If DDS20-LB fails to get the time from the server, DDS20-LB will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
536
537 (% 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.**
538
539
540 === 2.6.4 Poll sensor value ===
541
542
543 Users can poll sensor values based on timestamps. Below is the downlink command.
544
545 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:425.818px" %)
546 |(% colspan="4" style="background-color:#d9e2f3; color:#0070c0; width:423px" %)**Downlink Command to poll Open/Close status (0x31)**
547 |(% style="width:58px" %)**1byte**|(% style="width:127px" %)**4bytes**|(% style="width:124px" %)**4bytes**|(% style="width:114px" %)**1byte**
548 |(% style="width:58px" %)31|(% style="width:127px" %)Timestamp start|(% style="width:124px" %)Timestamp end|(% style="width:114px" %)Uplink Interval
549
550 (((
551 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.
552 )))
553
554 (((
555 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"]]
556 )))
557
558 (((
559 Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00's data
560 )))
561
562 (((
563 Uplink Internal =5s，means DDS20-LB will send one packet every 5s. range 5~~255s.
564 )))
565
566
567 == 2.7 Frequency Plans ==
568
569
570 The DDS20-LB uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
571
572 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
573
574
575 = 3. Configure DDS20-LB =
576
577 == 3.1 Configure Methods ==
578
579
580 DDS20-LB supports below configure method:
581
582 * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
583
584 * 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]].
585
586 * LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
587
588
589 == 3.2 General Commands ==
590
591
592 These commands are to configure:
593
594 * General system settings like: uplink interval.
595
596 * LoRaWAN protocol & radio related command.
597
598 They are same for all Dragino Devices which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:
599
600 [[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/]]
601
602
603 == 3.3 Commands special design for DDS20-LB ==
604
605
606 These commands only valid for DDS20-LB, as below:
607
608
609 === 3.3.1 Set Transmit Interval Time ===
610
611
612 (((
613 Feature: Change LoRaWAN End Node Transmit Interval.
614 )))
615
616 (((
617 (% style="color:blue" %)**AT Command: AT+TDC**
618 )))
619
620 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
621 |=(% style="width: 156px;background-color:#D9E2F3; color:#0070c0" %)**Command Example**|=(% style="width: 137px;background-color:#D9E2F3; color:#0070c0" %)**Function**|=(% style="background-color:#D9E2F3; color:#0070c0" %)**Response**
622 |(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((
623 30000
624 OK
625 the interval is 30000ms = 30s
626 )))
627 |(% style="width:156px" %)AT+TDC=60000|(% style="width:137px" %)Set Transmit Interval|(((
628 OK
629 Set transmit interval to 60000ms = 60 seconds
630 )))
631
632 (((
633 (% style="color:blue" %)**Downlink Command: 0x01**
634 )))
635
636 (((
637 Format: Command Code (0x01) followed by 3 bytes time value.
638 )))
639
640 (((
641 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
642 )))
643
644 * (((
645 Example 1: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
646 )))
647 * (((
648 Example 2: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds 
649
650
651
652 )))
653
654 === 3.3.2 Set Interrupt Mode ===
655
656
657 Feature, Set Interrupt mode for PA8 of pin.
658
659 When AT+INTMOD=0 is set, PA8 is used as a digital input port.
660
661 (% style="color:blue" %)**AT Command: AT+INTMOD**
662
663 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
664 |=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Response**
665 |(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
666 0
667 OK
668 the mode is 0 =Disable Interrupt
669 )))
670 |(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
671 Set Transmit Interval
672 0. (Disable Interrupt),
673 ~1. (Trigger by rising and falling edge)
674 2. (Trigger by falling edge)
675 3. (Trigger by rising edge)
676 )))|(% style="width:157px" %)OK
677
678 (% style="color:blue" %)**Downlink Command: 0x06**
679
680 Format: Command Code (0x06) followed by 3 bytes.
681
682 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
683
684 * Example 1: Downlink Payload: 06000000  ~/~/  Turn off interrupt mode
685
686 * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
687
688
689 = 4. Battery & Power Consumption =
690
691
692 DDS20-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
693
694 [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
695
696
697 = 5. OTA Firmware update =
698
699
700 (% class="wikigeneratedid" %)
701 User can change firmware DDS20-LB to:
702
703 * Change Frequency band/ region.
704
705 * Update with new features.
706
707 * Fix bugs.
708
709 Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/ph4uyz0rchflrnw/AADr1f_5Sg30804NItpfOQbla?dl=0]]**
710
711 Methods to Update Firmware:
712
713 * (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/]]**
714
715 * 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]]**.
716
717
718 = 6. FAQ =
719
720 == 6.1  What is the frequency plan for DDS20-LB? ==
721
722
723 DDS20-LB 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"]]
724
725
726 == 6.2  Can I use DDS20-LB in condensation environment? ==
727
728
729 DDS20-LB is not suitable to be used in condensation environment. Condensation on the DDS20-LB probe will affect the reading and always got 0.
730
731
732 = 7.  Trouble Shooting =
733
734 == 7.1  Why I can't join TTN V3 in US915 / AU915 bands? ==
735
736
737 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
738
739
740 == 7.2  AT Command input doesn't work ==
741
742
743 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.
744
745
746 == 7.3  Why i always see 0x0000 or 0 for the distance value? ==
747
748
749 (((
750 LDDS20 has a strict [[**installation requirement**>>||anchor="H1.5A0InstallDDS20-LB"]]. Please make sure the installation method exactly follows up with the installation requirement. Otherwise, the reading might be always 0x00.
751
752 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.
753 )))
754
755
756 = 8. Order Info =
757
758
759 Part Number: (% style="color:blue" %)**DDS20-LB-XXX**
760
761 (% style="color:red" %)**XXX**(%%): **The default frequency band**
762
763 * (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
764
765 * (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
766
767 * (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
768
769 * (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
770
771 * (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
772
773 * (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
774
775 * (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
776
777 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
778
779
780 = 9. ​Packing Info =
781
782
783 (% style="color:#037691" %)**Package Includes**:
784
785 * DDS20-LB LoRaWAN Ultrasonic Liquid Level Sensor x 1
786
787 (% style="color:#037691" %)**Dimension and weight**:
788
789 * Device Size: cm
790
791 * Device Weight: g
792
793 * Package Size / pcs : cm
794
795 * Weight / pcs : g
796
797
798 = 10. Support =
799
800
801 * 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.
802
803 * 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]].