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Version 73.1 by Ellie Zhang on 2023/07/02 14:12
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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
54 == 1.3 Specification ==
55
56
57 (% style="color:#037691" %)**Common DC Characteristics:**
58
59 * Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~~ 3.6v
60 * Operating Temperature: -40 ~~ 85°C
61
62 (% style="color:#037691" %)**LoRa Spec:**
63
64 * Frequency Range,  Band 1 (HF): 862 ~~ 1020 Mhz
65 * Max +22 dBm constant RF output vs.
66 * RX sensitivity: down to -139 dBm.
67 * Excellent blocking immunity
68
69 (% style="color:#037691" %)**Battery:**
70
71 * Li/SOCI2 un-chargeable battery
72 * Capacity: 8500mAh
73 * Self-Discharge: <1% / Year @ 25°C
74 * Max continuously current: 130mA
75 * Max boost current: 2A, 1 second
76
77 (% style="color:#037691" %)**Power Consumption**
78
79 * Sleep Mode: 5uA @ 3.3v
80 * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
81
82
83 == 1.4 Rated environmental conditions ==
84
85
86 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:500px" %)
87 |(% style="background-color:#d9e2f3; color:#0070c0; width:163px" %)**Item**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)(((
88 **Minimum value**
89 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:70px" %)(((
90 **Typical value**
91 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:87px" %)(((
92 **Maximum value**
93 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**Unit**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**Remarks**
94 |(% style="width:174px" %)Storage temperature|(% style="width:86px" %)-25|(% style="width:66px" %)25|(% style="width:90px" %)80|(% style="width:48px" %)℃|(% style="width:203px" %)
95 |(% style="width:174px" %)Storage humidity|(% style="width:86px" %) |(% style="width:66px" %)65%|(% style="width:90px" %)90%|(% style="width:48px" %)RH|(% style="width:203px" %)(1)
96 |(% style="width:174px" %)Operating temperature|(% style="width:86px" %)-15|(% style="width:66px" %)25|(% style="width:90px" %)60|(% style="width:48px" %)℃|(% style="width:203px" %)
97 |(% style="width:174px" %)Working humidity|(% style="width:86px" %)(((
98
99
100
101 )))|(% style="width:66px" %)65%|(% style="width:90px" %)80%|(% style="width:48px" %)RH|(% style="width:203px" %)(1)
102
103 (((
104 (% style="color:red" %)**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
105
106 (% style="color:red" %)** 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)**
107
108
109 )))
110
111 == 1.5 Effective measurement range Reference beam pattern ==
112
113
114 (% style="color:blue" %)**1. The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
115
116 [[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"]]
117
118
119 (% style="color:blue" %)**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.**
120
121 [[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"]]
122
123
124 == 1.6 Applications ==
125
126
127 * Horizontal distance measurement
128 * Liquid level measurement
129 * Parking management system
130 * Object proximity and presence detection
131 * Intelligent trash can management system
132 * Robot obstacle avoidance
133 * Automatic control
134 * Sewer
135 * Bottom water level monitoring
136
137
138 == 1.7 Sleep mode and working mode ==
139
140
141 (% 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.
142
143 (% 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.
144
145
146 == 1.8 Button & LEDs ==
147
148
149 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
150
151
152 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
153 |=(% 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**
154 |(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
155 If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
156 Meanwhile, BLE module will be active and user can connect via BLE to configure device.
157 )))
158 |(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
159 (% 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.
160 (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
161 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.
162 )))
163 |(% 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.
164
165
166 == 1.9 BLE connection ==
167
168
169 DDS75-LB support BLE remote configure.
170
171
172 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:
173
174 * Press button to send an uplink
175 * Press button to active device.
176 * Device Power on or reset.
177
178 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
179
180
181 == 1.10 Pin Definitions ==
182
183 [[image:image-20230523174230-1.png]]
184
185
186 == 1.11 Mechanical ==
187
188
189 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
190
191
192 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]
193
194
195 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]
196
197
198 (% style="color:blue" %)**Probe Mechanical:**
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-20220610172003-1.png?rev=1.1||alt="image-20220610172003-1.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 [[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"]]
208
209
210 = 2. Configure DDS75-LB to connect to LoRaWAN network =
211
212 == 2.1 How it works ==
213
214
215 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.
216
217 (% style="display:none" %) (%%)
218
219 == 2.2 ​Quick guide to connect to LoRaWAN server (OTAA) ==
220
221
222 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.
223
224 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.
225
226 [[image:image-20230612171032-3.png||height="492" width="855"]](% style="display:none" %)
227
228
229 (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DDS75-LB.
230
231 Each DDS75-LB is shipped with a sticker with the default device EUI as below:
232
233 [[image:image-20230426084152-1.png||alt="图片-20230426084152-1.png" height="233" width="502"]]
234
235
236 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
237
238
239 (% style="color:blue" %)**Register the device**
240
241 [[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"]]
242
243
244 (% style="color:blue" %)**Add APP EUI and DEV EUI**
245
246 [[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"]]
247
248
249 (% style="color:blue" %)**Add APP EUI in the application**
250
251
252 [[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"]]
253
254
255 (% style="color:blue" %)**Add APP KEY**
256
257 [[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"]]
258
259
260 (% style="color:blue" %)**Step 2:**(%%) Activate on DDS75-LB
261
262
263 Press the button for 5 seconds to activate the DDS75-LB.
264
265 (% 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.
266
267 After join success, it will start to upload messages to TTN and you can see the messages in the panel.
268
269
270 == 2.3  ​Uplink Payload ==
271
272
273 (((
274 DDS75-LB will uplink payload via LoRaWAN with below payload format: 
275 )))
276
277 (((
278 Uplink payload includes in total 8 bytes.
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:微信截图_20230702141109.png||height="145" width="1131"]]
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 * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
319 * If the sensor value lower than 0x0118 (280mm), the sensor value will be invalid. All value lower than 280mm will be set to 0x0014(20mm) which means the value is invalid.
320
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="H3.3.2SetInterruptMode"]] 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
346 === 2.3.5  Sensor Flag ===
347
348
349 (((
350 0x01: Detect Ultrasonic Sensor
351 )))
352
353 (((
354 0x00: No Ultrasonic Sensor
355 )))
356
357
358 === 2.3.6  Decode payload in The Things Network ===
359
360
361 While using TTN network, you can add the payload format to decode the payload.
362
363 [[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"]]
364
365 The payload decoder function for TTN V3 is here:
366
367 (((
368 DDS75-LB TTN V3 Payload Decoder:  [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
369 )))
370
371
372 == 2.4  Uplink Interval ==
373
374
375 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>>||anchor="H3.3.1SetTransmitIntervalTime"]]
376
377
378 == 2.5  ​Show Data in DataCake IoT Server ==
379
380
381 (((
382 [[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:
383 )))
384
385
386 (((
387 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
388 )))
389
390 (((
391 (% 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:**
392 )))
393
394
395 [[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"]]
396
397
398 [[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"]]
399
400
401 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
402
403 (% style="color:blue" %)**Step 4**(%%)**: Search the DDS75-LB and add DevEUI.**
404
405 [[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"]]
406
407
408 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
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/image-20220610165129-11.png?width=1088&height=595&rev=1.1||alt="image-20220610165129-11.png"]]
411
412
413
414 == 2.6 Datalog Feature ==
415
416
417 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.
418
419
420 === 2.6.1 Ways to get datalog via LoRaWAN ===
421
422
423 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.
424
425 * (((
426 a) DDS75-LB will do an ACK check for data records sending to make sure every data arrive server.
427 )))
428 * (((
429 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.
430 )))
431
432 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
433
434 [[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"]]
435
436
437 === 2.6.2 Unix TimeStamp ===
438
439
440 DDS75-LB uses Unix TimeStamp format based on
441
442 [[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"]]
443
444 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
445
446 Below is the converter example
447
448 [[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"]]
449
450
451 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
452
453
454 === 2.6.3 Set Device Time ===
455
456
457 User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command.
458
459 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).
460
461 (% 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.**
462
463
464 === 2.6.4 Poll sensor value ===
465
466
467 Users can poll sensor values based on timestamps. Below is the downlink command.
468
469 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:425.818px" %)
470 |(% colspan="4" style="background-color:#d9e2f3; color:#0070c0; width:423px" %)**Downlink Command to poll Open/Close status (0x31)**
471 |(% style="width:58px" %)**1byte**|(% style="width:127px" %)**4bytes**|(% style="width:124px" %)**4bytes**|(% style="width:114px" %)**1byte**
472 |(% style="width:58px" %)31|(% style="width:127px" %)Timestamp start|(% style="width:124px" %)Timestamp end|(% style="width:114px" %)Uplink Interval
473
474 (((
475 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.
476 )))
477
478 (((
479 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"]]
480 )))
481
482 (((
483 Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00's data
484 )))
485
486 (((
487 Uplink Internal =5s，means DDS75-LB will send one packet every 5s. range 5~~255s.
488 )))
489
490
491 == 2.7 Frequency Plans ==
492
493
494 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.
495
496 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
497
498
499 = 3. Configure DDS75-LB =
500
501 == 3.1 Configure Methods ==
502
503
504 DDS75-LB supports below configure method:
505
506 * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
507
508 * 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]].
509
510 * LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
511
512
513 == 3.2 General Commands ==
514
515
516 These commands are to configure:
517
518 * General system settings like: uplink interval.
519
520 * LoRaWAN protocol & radio related command.
521
522 They are same for all Dragino Devices which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:
523
524 [[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/]]
525
526
527 == 3.3 Commands special design for DDS75-LB ==
528
529
530 These commands only valid for DDS75-LB, as below:
531
532
533 === 3.3.1 Set Transmit Interval Time ===
534
535
536 (((
537 Feature: Change LoRaWAN End Node Transmit Interval.
538 )))
539
540 (((
541 (% style="color:blue" %)**AT Command: AT+TDC**
542 )))
543
544 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
545 |=(% 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**
546 |(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((
547 30000
548 OK
549 the interval is 30000ms = 30s
550 )))
551 |(% style="width:156px" %)AT+TDC=60000|(% style="width:137px" %)Set Transmit Interval|(((
552 OK
553 Set transmit interval to 60000ms = 60 seconds
554 )))
555
556 (((
557 (% style="color:blue" %)**Downlink Command: 0x01**
558 )))
559
560 (((
561 Format: Command Code (0x01) followed by 3 bytes time value.
562 )))
563
564 (((
565 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
566 )))
567
568 * (((
569 Example 1: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
570 )))
571 * (((
572 Example 2: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
573
574
575
576 )))
577
578 === 3.3.2 Set Interrupt Mode ===
579
580
581 Feature, Set Interrupt mode for PA8 of pin.
582
583 When AT+INTMOD=0 is set, PA8 is used as a digital input port.
584
585 (% style="color:blue" %)**AT Command: AT+INTMOD**
586
587 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
588 |=(% 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**
589 |(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
590 0
591 OK
592 the mode is 0 =Disable Interrupt
593 )))
594 |(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
595 Set Transmit Interval
596 0. (Disable Interrupt),
597 ~1. (Trigger by rising and falling edge)
598 2. (Trigger by falling edge)
599 3. (Trigger by rising edge)
600 )))|(% style="width:157px" %)OK
601
602 (% style="color:blue" %)**Downlink Command: 0x06**
603
604 Format: Command Code (0x06) followed by 3 bytes.
605
606 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
607
608 * Example 1: Downlink Payload: 06000000  ~/~/  Turn off interrupt mode
609
610 * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
611
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
642 = 6. FAQ =
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 == 7.4  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:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/image-20230113135125-2.png?width=1057&height=136&rev=1.1||alt="image-20230113135125-2.png"]]
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 = 9. ​Packing Info =
726
727
728 (% style="color:#037691" %)**Package Includes**:
729
730 * DDS75-LB LoRaWAN Distance Detection Sensor x 1
731
732 (% style="color:#037691" %)**Dimension and weight**:
733
734 * Device Size: cm
735
736 * Device Weight: g
737
738 * Package Size / pcs : cm
739
740 * Weight / pcs : g
741
742
743 = 10. Support =
744
745
746 * 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.
747
748 * 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]].