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Version 70.15 by Xiaoling on 2023/06/13 08:46
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1 (% style="text-align:center" %)
2 [[image:image-20230612170349-1.png||height="656" width="656"]]
3
4
5
6
7 **Table of Contents：**
8
9 {{toc/}}
10
11
12
13
14
15
16 = 1. Introduction =
17
18 == 1.1 What is LoRaWAN Distance Detection Sensor ==
19
20
21 The Dragino DDS75-LB is a (% style="color:blue" %)** LoRaWAN Distance Detection Sensor**(%%) for Internet of Things solution. It is used to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses (% style="color:blue" %)** ultrasonic sensing technology**(%%) for (% style="color:blue" %)**distance measurement**(%%), and (% style="color:blue" %)** temperature compensation**(%%) is performed internally to improve the reliability of data. The DDS75-LB can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc.
22
23 It detects the distance(% style="color:blue" %)**  between the measured object and the sensor**(%%), and uploads the value via wireless to LoRaWAN IoT Server.
24
25 The LoRa wireless technology used in DDS75-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.
26
27 DDS75-LB (% style="color:blue" %)**supports BLE configure**(%%) and (% style="color:blue" %)**wireless OTA update**(%%) which make user easy to use.
28
29 DDS75-LB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years.
30
31 Each DDS75-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.
32
33 [[image:image-20230612170943-2.png||height="525" width="912"]]
34
35
36 == 1.2 ​Features ==
37
38
39 * LoRaWAN 1.0.3 Class A
40 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
41 * Ultra-low power consumption
42 * Distance Detection by Ultrasonic technology
43 * Flat object range 280mm - 7500mm
44 * Accuracy: ±(1cm+S*0.3%) (S: Distance)
45 * Cable Length : 25cm
46 * Support Bluetooth v5.1 and LoRaWAN remote configure
47 * Support wireless OTA update firmware
48 * AT Commands to change parameters
49 * Downlink to change configure
50 * IP66 Waterproof Enclosure
51 * 8500mAh Battery for long term use
52
53 == 1.3 Specification ==
54
55
56 (% style="color:#037691" %)**Rated environmental conditions:**
57
58 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:500px" %)
59 |(% style="background-color:#d9e2f3; color:#0070c0; width:163px" %)**Item**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)(((
60 **Minimum value**
61 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:70px" %)(((
62 **Typical value**
63 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:87px" %)(((
64 **Maximum value**
65 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**Unit**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**Remarks**
66 |(% style="width:174px" %)Storage temperature|(% style="width:86px" %)-25|(% style="width:66px" %)25|(% style="width:90px" %)80|(% style="width:48px" %)℃|(% style="width:203px" %)
67 |(% style="width:174px" %)Storage humidity|(% style="width:86px" %) |(% style="width:66px" %)65%|(% style="width:90px" %)90%|(% style="width:48px" %)RH|(% style="width:203px" %)(1)
68 |(% style="width:174px" %)Operating temperature|(% style="width:86px" %)-15|(% style="width:66px" %)25|(% style="width:90px" %)60|(% style="width:48px" %)℃|(% style="width:203px" %)
69 |(% style="width:174px" %)Working humidity|(% style="width:86px" %)(((
70
71
72
73 )))|(% style="width:66px" %)65%|(% style="width:90px" %)80%|(% style="width:48px" %)RH|(% style="width:203px" %)(1)
74
75 (((
76 **Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
77
78 **~ b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
79
80
81 )))
82
83 (% style="color:#037691" %)**Common DC Characteristics:**
84
85 * Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~~ 3.6v
86 * Operating Temperature: -40 ~~ 85°C
87
88 (% style="color:#037691" %)**LoRa Spec:**
89
90 * Frequency Range,  Band 1 (HF): 862 ~~ 1020 Mhz
91 * Max +22 dBm constant RF output vs.
92 * RX sensitivity: down to -139 dBm.
93 * Excellent blocking immunity
94
95 (% style="color:#037691" %)**Battery:**
96
97 * Li/SOCI2 un-chargeable battery
98 * Capacity: 8500mAh
99 * Self-Discharge: <1% / Year @ 25°C
100 * Max continuously current: 130mA
101 * Max boost current: 2A, 1 second
102
103 (% style="color:#037691" %)**Power Consumption**
104
105 * Sleep Mode: 5uA @ 3.3v
106 * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
107
108 == 1.4 Effective measurement range Reference beam pattern ==
109
110
111 **~1. The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
112
113 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654852253176-749.png?rev=1.1||alt="1654852253176-749.png"]]
114
115
116 **2. The object to be tested is a "corrugated cardboard box" perpendicular to the central axis of 0 °, and the length * width is 60cm * 50cm.**
117
118 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654852175653-550.png?rev=1.1||alt="1654852175653-550.png"]]
119
120
121 == 1.5 Applications ==
122
123
124 * Horizontal distance measurement
125 * Liquid level measurement
126 * Parking management system
127 * Object proximity and presence detection
128 * Intelligent trash can management system
129 * Robot obstacle avoidance
130 * Automatic control
131 * Sewer
132 * Bottom water level monitoring
133
134 == 1.6 Sleep mode and working mode ==
135
136
137 (% 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.
138
139 (% 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.
140
141
142 == 1.7 Button & LEDs ==
143
144
145 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
146
147
148 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
149 |=(% 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**
150 |(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
151 If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
152 Meanwhile, BLE module will be active and user can connect via BLE to configure device.
153 )))
154 |(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
155 (% 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.
156 (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
157 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.
158 )))
159 |(% 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.
160
161 == 1.8 BLE connection ==
162
163
164 DDS75-LB support BLE remote configure.
165
166
167 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:
168
169 * Press button to send an uplink
170 * Press button to active device.
171 * Device Power on or reset.
172
173 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
174
175
176 == 1.9 Pin Definitions ==
177
178 [[image:image-20230523174230-1.png]]
179
180
181
182
183 == 2.10 Mechanical ==
184
185
186 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
187
188
189 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]
190
191
192 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]
193
194
195 **Probe Mechanical:**
196
197
198 [[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-20220610172003-1.png?rev=1.1||alt="image-20220610172003-1.png"]]
199
200
201 [[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-20220610172003-2.png?rev=1.1||alt="image-20220610172003-2.png"]]
202
203
204 [[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-20220610172003-2.png?rev=1.1||alt="image-20220610172003-2.png"]]
205
206
207 = 2. Configure DDS75-LB to connect to LoRaWAN network =
208
209 == 2.1 How it works ==
210
211
212 The DDS75-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 DDS75-LB. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.
213
214 (% style="display:none" %) (%%)
215
216 == 2.2 ​Quick guide to connect to LoRaWAN server (OTAA) ==
217
218
219 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.
220
221 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.
222
223 [[image:image-20230612171032-3.png||height="492" width="855"]](% style="display:none" %)
224
225
226 (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DDS75-LB.
227
228 Each DDS75-LB is shipped with a sticker with the default device EUI as below:
229
230 [[image:image-20230426084152-1.png||alt="图片-20230426084152-1.png" height="233" width="502"]]
231
232
233 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
234
235
236 (% style="color:blue" %)**Register the device**
237
238 [[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"]]
239
240
241 (% style="color:blue" %)**Add APP EUI and DEV EUI**
242
243 [[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"]]
244
245
246 (% style="color:blue" %)**Add APP EUI in the application**
247
248
249 [[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"]]
250
251
252 (% style="color:blue" %)**Add APP KEY**
253
254 [[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"]]
255
256
257 (% style="color:blue" %)**Step 2:**(%%) Activate on DDS75-LB
258
259
260 Press the button for 5 seconds to activate the DDS75-LB.
261
262 (% 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.
263
264 After join success, it will start to upload messages to TTN and you can see the messages in the panel.
265
266
267 == 2.3  ​Uplink Payload ==
268
269
270 (((
271 DDS75-LB will uplink payload via LoRaWAN with below payload format: 
272 )))
273
274 (((
275 Uplink payload includes in total 4 bytes.
276 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
277 )))
278
279
280
281 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
282 |=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)(((
283 **Size(bytes)**
284 )))|=(% 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**
285 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
286 [[Distance>>||anchor="H2.3.2A0Distance"]]
287 (unit: mm)
288 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
289 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
290 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
291
292 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654850511545-399.png?rev=1.1||alt="1654850511545-399.png"]]
293
294
295 === 2.3.1  Battery Info ===
296
297
298 Check the battery voltage for DDS75-LB.
299
300 Ex1: 0x0B45 = 2885mV
301
302 Ex2: 0x0B49 = 2889mV
303
304
305 === 2.3.2  Distance ===
306
307
308 (((
309 Get the distance. Flat object range 280mm - 7500mm.
310 )))
311
312 (((
313 For example, if the data you get from the register is 0x0B 0x05, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** **
314
315 (% style="color:#4472c4" %)**0B05(H) = 2821 (D) = 2821 mm.**
316 )))
317
318
319 * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
320 * If the sensor value lower than 0x0118 (280mm), the sensor value will be invalid. Since v1.1.4, all value lower than 280mm will be set to 0x0014(20mm) which means the value is invalid.
321
322 === 2.3.3  Interrupt Pin ===
323
324
325 This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3A0SetInterruptMode"]] for the hardware and software set up.
326
327 **Example:**
328
329 0x00: Normal uplink packet.
330
331 0x01: Interrupt Uplink Packet.
332
333
334 === 2.3.4  DS18B20 Temperature sensor ===
335
336
337 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
338
339 **Example**:
340
341 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
342
343 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
344
345 (% style="color:red" %)**Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.**
346
347
348 === 2.3.5  Sensor Flag ===
349
350
351 (((
352 0x01: Detect Ultrasonic Sensor
353 )))
354
355 (((
356 0x00: No Ultrasonic Sensor
357 )))
358
359
360 === 2.3.6  Decode payload in The Things Network ===
361
362
363 While using TTN network, you can add the payload format to decode the payload.
364
365 [[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"]]
366
367 The payload decoder function for TTN V3 is here:
368
369 (((
370 DDS75-LB TTN V3 Payload Decoder:  [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
371 )))
372
373
374 == 2.4  Uplink Interval ==
375
376
377 The DDS75-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>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H4.1ChangeUplinkInterval"]]
378
379
380 == 2.5  ​Show Data in DataCake IoT Server ==
381
382
383 (((
384 [[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:
385 )))
386
387 (((
388
389 )))
390
391 (((
392 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
393 )))
394
395 (((
396 (% 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:**
397 )))
398
399
400 [[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"]]
401
402
403 [[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"]]
404
405
406 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
407
408 (% style="color:blue" %)**Step 4**(%%)**: Search the DDS75-LB and add DevEUI.**
409
410 [[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"]]
411
412
413 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
414
415 [[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"]]
416
417
418
419 == 2.6 Datalog Feature ==
420
421
422 Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, DDS75-LB will store the reading for future retrieving purposes.
423
424
425 === 2.6.1 Ways to get datalog via LoRaWAN ===
426
427
428 Set PNACKMD=1, DDS75-LB will wait for ACK for every uplink, when there is no LoRaWAN network,DDS75-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.
429
430 * (((
431 a) DDS75-LB will do an ACK check for data records sending to make sure every data arrive server.
432 )))
433 * (((
434 b) DDS75-LB will send data in **CONFIRMED Mode** when PNACKMD=1, but DDS75-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 DDS75-LB gets a ACK, DDS75-LB will consider there is a network connection and resend all NONE-ACK messages.
435 )))
436
437 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
438
439 [[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"]]
440
441
442 === 2.6.2 Unix TimeStamp ===
443
444
445 DDS75-LB uses Unix TimeStamp format based on
446
447 [[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"]]
448
449 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
450
451 Below is the converter example
452
453 [[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"]]
454
455
456 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
457
458
459 === 2.6.3 Set Device Time ===
460
461
462 User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command.
463
464 Once DDS75-LB Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to DDS75-LB. If DDS75-LB fails to get the time from the server, DDS75-LB will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
465
466 (% 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.**
467
468
469 === 2.6.4 Poll sensor value ===
470
471
472 Users can poll sensor values based on timestamps. Below is the downlink command.
473
474 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:425.818px" %)
475 |(% colspan="4" style="background-color:#d9e2f3; color:#0070c0; width:423px" %)**Downlink Command to poll Open/Close status (0x31)**
476 |(% style="width:58px" %)**1byte**|(% style="width:127px" %)**4bytes**|(% style="width:124px" %)**4bytes**|(% style="width:114px" %)**1byte**
477 |(% style="width:58px" %)31|(% style="width:127px" %)Timestamp start|(% style="width:124px" %)Timestamp end|(% style="width:114px" %)Uplink Interval
478
479 (((
480 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.
481 )))
482
483 (((
484 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"]]
485 )))
486
487 (((
488 Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00's data
489 )))
490
491 (((
492 Uplink Internal =5s，means DDS75-LB will send one packet every 5s. range 5~~255s.
493 )))
494
495
496 == 2.7 Frequency Plans ==
497
498
499 The DDS75-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.
500
501 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
502
503
504 = 3. Configure DDS75-LB =
505
506 == 3.1 Configure Methods ==
507
508
509 DDS75-LB supports below configure method:
510
511 * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
512
513 * 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]].
514
515 * LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
516
517 == 3.2 General Commands ==
518
519
520 These commands are to configure:
521
522 * General system settings like: uplink interval.
523
524 * LoRaWAN protocol & radio related command.
525
526 They are same for all Dragino Devices which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:
527
528 [[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/]]
529
530
531 == 3.3 Commands special design for DDS75-LB ==
532
533
534 These commands only valid for DDS75-LB, as below:
535
536
537 === 3.3.1 Set Transmit Interval Time ===
538
539
540 (((
541 Feature: Change LoRaWAN End Node Transmit Interval.
542 )))
543
544 (((
545 (% style="color:blue" %)**AT Command: AT+TDC**
546 )))
547
548 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
549 |=(% 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**
550 |(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((
551 30000
552 OK
553 the interval is 30000ms = 30s
554 )))
555 |(% style="width:156px" %)AT+TDC=60000|(% style="width:137px" %)Set Transmit Interval|(((
556 OK
557 Set transmit interval to 60000ms = 60 seconds
558 )))
559
560 (((
561 (% style="color:blue" %)**Downlink Command: 0x01**
562 )))
563
564 (((
565 Format: Command Code (0x01) followed by 3 bytes time value.
566 )))
567
568 (((
569 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
570 )))
571
572 * (((
573 Example 1: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
574 )))
575 * (((
576 Example 2: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
577 )))
578
579 === 3.3.2 Set Interrupt Mode ===
580
581
582 Feature, Set Interrupt mode for PA8 of pin.
583
584 When AT+INTMOD=0 is set, PA8 is used as a digital input port.
585
586 (% style="color:blue" %)**AT Command: AT+INTMOD**
587
588 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
589 |=(% 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**
590 |(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
591 0
592 OK
593 the mode is 0 =Disable Interrupt
594 )))
595 |(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
596 Set Transmit Interval
597 0. (Disable Interrupt),
598 ~1. (Trigger by rising and falling edge)
599 2. (Trigger by falling edge)
600 3. (Trigger by rising edge)
601 )))|(% style="width:157px" %)OK
602
603 (% style="color:blue" %)**Downlink Command: 0x06**
604
605 Format: Command Code (0x06) followed by 3 bytes.
606
607 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
608
609 * Example 1: Downlink Payload: 06000000  ~/~/  Turn off interrupt mode
610
611 * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
612
613 = 4. Battery & Power Consumption =
614
615
616 DDS75-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
617
618 [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
619
620
621 = 5. OTA Firmware update =
622
623
624 (% class="wikigeneratedid" %)
625 User can change firmware DDS75-LB to:
626
627 * Change Frequency band/ region.
628
629 * Update with new features.
630
631 * Fix bugs.
632
633 Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/7la95mae0fn03xe/AACtzs-32m22TLb75B-iIr-Qa?dl=0]]**
634
635 Methods to Update Firmware:
636
637 * (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/]]
638
639 * 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]]**.
640
641 = 6. FAQ =
642
643
644 == 6.1  What is the frequency plan for DDS75-LB? ==
645
646
647 DDS75-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"]]
648
649
650 == 6.2  Can I use DDS75-LB in condensation environment? ==
651
652
653 DDS75-LB is not suitable to be used in condensation environment. Condensation on the DDS75-LB probe will affect the reading and always got 0.
654
655
656 = 7.  Trouble Shooting =
657
658 == 7.1  Why I can't join TTN V3 in US915 / AU915 bands? ==
659
660
661 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
662
663
664 == 7.2  AT Command input doesn't work ==
665
666
667 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.
668
669
670 == 7.3  Why does the sensor reading show 0 or "No sensor" ==
671
672
673 ~1. The measurement object is very close to the sensor, but in the blind spot of the sensor.
674
675 2. Sensor wiring is disconnected
676
677 3. Not using the correct decoder
678
679
680 == 5.4  Abnormal readings The gap between multiple readings is too large or the gap between the readings and the actual value is too large ==
681
682
683 1) Please check if there is something on the probe affecting its measurement (condensed water, volatile oil, etc.)
684
685 2) Does it change with temperature, temperature will affect its measurement
686
687 3) If abnormal data occurs, you can turn on DEBUG mode, Please use downlink or AT COMMAN to enter DEBUG mode.
688
689 downlink command: (% style="color:blue" %)**F1 01**(%%), AT command: (% style="color:blue" %)**AT+DDEBUG=1**
690
691 4) After entering the debug mode, it will send 20 pieces of data at a time, and you can send its uplink to us for analysis
692
693 [[image:image-20230113135125-2.png||height="136" width="1057"]]
694
695
696 Its original payload will be longer than other data. Even though it is being parsed, it can be seen that it is abnormal data.
697
698 Please send the data to us for check.
699
700
701 = 8. Order Info =
702
703
704 Part Number: (% style="color:blue" %)**DDS75-LB-XXX**
705
706 (% style="color:red" %)**XXX**(%%): **The default frequency band**
707
708 * (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
709
710 * (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
711
712 * (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
713
714 * (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
715
716 * (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
717
718 * (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
719
720 * (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
721
722 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
723
724
725
726
727 = 9. ​Packing Info =
728
729
730 (% style="color:#037691" %)**Package Includes**:
731
732 * DDS75-LB LoRaWAN Distance Detection Sensor x 1
733
734 (% style="color:#037691" %)**Dimension and weight**:
735
736 * Device Size: cm
737
738 * Device Weight: g
739
740 * Package Size / pcs : cm
741
742 * Weight / pcs : g
743
744
745
746
747 = 10. Support =
748
749
750 * 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.
751
752 * 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]].