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Version 70.16 by Xiaoling on 2023/06/13 08:48
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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
323
324 === 2.3.3  Interrupt Pin ===
325
326
327 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.
328
329 **Example:**
330
331 0x00: Normal uplink packet.
332
333 0x01: Interrupt Uplink Packet.
334
335
336 === 2.3.4  DS18B20 Temperature sensor ===
337
338
339 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
340
341 **Example**:
342
343 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
344
345 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
346
347 (% style="color:red" %)**Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.**
348
349
350 === 2.3.5  Sensor Flag ===
351
352
353 (((
354 0x01: Detect Ultrasonic Sensor
355 )))
356
357 (((
358 0x00: No Ultrasonic Sensor
359 )))
360
361
362 === 2.3.6  Decode payload in The Things Network ===
363
364
365 While using TTN network, you can add the payload format to decode the payload.
366
367 [[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"]]
368
369 The payload decoder function for TTN V3 is here:
370
371 (((
372 DDS75-LB TTN V3 Payload Decoder:  [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
373 )))
374
375
376 == 2.4  Uplink Interval ==
377
378
379 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"]]
380
381
382 == 2.5  ​Show Data in DataCake IoT Server ==
383
384
385 (((
386 [[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:
387 )))
388
389 (((
390
391 )))
392
393 (((
394 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
395 )))
396
397 (((
398 (% 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:**
399 )))
400
401
402 [[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"]]
403
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/1654592800389-571.png?rev=1.1||alt="1654592800389-571.png"]]
406
407
408 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
409
410 (% style="color:blue" %)**Step 4**(%%)**: Search the DDS75-LB and add DevEUI.**
411
412 [[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"]]
413
414
415 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
416
417 [[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"]]
418
419
420
421 == 2.6 Datalog Feature ==
422
423
424 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.
425
426
427 === 2.6.1 Ways to get datalog via LoRaWAN ===
428
429
430 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.
431
432 * (((
433 a) DDS75-LB will do an ACK check for data records sending to make sure every data arrive server.
434 )))
435 * (((
436 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.
437 )))
438
439 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
440
441 [[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"]]
442
443
444 === 2.6.2 Unix TimeStamp ===
445
446
447 DDS75-LB uses Unix TimeStamp format based on
448
449 [[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"]]
450
451 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
452
453 Below is the converter example
454
455 [[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"]]
456
457
458 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
459
460
461 === 2.6.3 Set Device Time ===
462
463
464 User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command.
465
466 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).
467
468 (% 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.**
469
470
471 === 2.6.4 Poll sensor value ===
472
473
474 Users can poll sensor values based on timestamps. Below is the downlink command.
475
476 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:425.818px" %)
477 |(% colspan="4" style="background-color:#d9e2f3; color:#0070c0; width:423px" %)**Downlink Command to poll Open/Close status (0x31)**
478 |(% style="width:58px" %)**1byte**|(% style="width:127px" %)**4bytes**|(% style="width:124px" %)**4bytes**|(% style="width:114px" %)**1byte**
479 |(% style="width:58px" %)31|(% style="width:127px" %)Timestamp start|(% style="width:124px" %)Timestamp end|(% style="width:114px" %)Uplink Interval
480
481 (((
482 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.
483 )))
484
485 (((
486 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"]]
487 )))
488
489 (((
490 Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00's data
491 )))
492
493 (((
494 Uplink Internal =5s，means DDS75-LB will send one packet every 5s. range 5~~255s.
495 )))
496
497
498 == 2.7 Frequency Plans ==
499
500
501 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.
502
503 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
504
505
506 = 3. Configure DDS75-LB =
507
508 == 3.1 Configure Methods ==
509
510
511 DDS75-LB supports below configure method:
512
513 * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
514
515 * 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]].
516
517 * LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
518
519 == 3.2 General Commands ==
520
521
522 These commands are to configure:
523
524 * General system settings like: uplink interval.
525
526 * LoRaWAN protocol & radio related command.
527
528 They are same for all Dragino Devices which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:
529
530 [[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/]]
531
532
533 == 3.3 Commands special design for DDS75-LB ==
534
535
536 These commands only valid for DDS75-LB, as below:
537
538
539 === 3.3.1 Set Transmit Interval Time ===
540
541
542 (((
543 Feature: Change LoRaWAN End Node Transmit Interval.
544 )))
545
546 (((
547 (% style="color:blue" %)**AT Command: AT+TDC**
548 )))
549
550 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
551 |=(% 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**
552 |(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((
553 30000
554 OK
555 the interval is 30000ms = 30s
556 )))
557 |(% style="width:156px" %)AT+TDC=60000|(% style="width:137px" %)Set Transmit Interval|(((
558 OK
559 Set transmit interval to 60000ms = 60 seconds
560 )))
561
562 (((
563 (% style="color:blue" %)**Downlink Command: 0x01**
564 )))
565
566 (((
567 Format: Command Code (0x01) followed by 3 bytes time value.
568 )))
569
570 (((
571 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
572 )))
573
574 * (((
575 Example 1: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
576 )))
577 * (((
578 Example 2: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
579 )))
580
581 === 3.3.2 Set Interrupt Mode ===
582
583
584 Feature, Set Interrupt mode for PA8 of pin.
585
586 When AT+INTMOD=0 is set, PA8 is used as a digital input port.
587
588 (% style="color:blue" %)**AT Command: AT+INTMOD**
589
590 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
591 |=(% 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**
592 |(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
593 0
594 OK
595 the mode is 0 =Disable Interrupt
596 )))
597 |(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
598 Set Transmit Interval
599 0. (Disable Interrupt),
600 ~1. (Trigger by rising and falling edge)
601 2. (Trigger by falling edge)
602 3. (Trigger by rising edge)
603 )))|(% style="width:157px" %)OK
604
605 (% style="color:blue" %)**Downlink Command: 0x06**
606
607 Format: Command Code (0x06) followed by 3 bytes.
608
609 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
610
611 * Example 1: Downlink Payload: 06000000  ~/~/  Turn off interrupt mode
612
613 * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
614
615 = 4. Battery & Power Consumption =
616
617
618 DDS75-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
619
620 [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
621
622
623 = 5. OTA Firmware update =
624
625
626 (% class="wikigeneratedid" %)
627 User can change firmware DDS75-LB to:
628
629 * Change Frequency band/ region.
630
631 * Update with new features.
632
633 * Fix bugs.
634
635 Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/7la95mae0fn03xe/AACtzs-32m22TLb75B-iIr-Qa?dl=0]]**
636
637 Methods to Update Firmware:
638
639 * (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/]]
640
641 * 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]]**.
642
643 = 6. FAQ =
644
645
646 == 6.1  What is the frequency plan for DDS75-LB? ==
647
648
649 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"]]
650
651
652 == 6.2  Can I use DDS75-LB in condensation environment? ==
653
654
655 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.
656
657
658 = 7.  Trouble Shooting =
659
660 == 7.1  Why I can't join TTN V3 in US915 / AU915 bands? ==
661
662
663 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
664
665
666 == 7.2  AT Command input doesn't work ==
667
668
669 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.
670
671
672 == 7.3  Why does the sensor reading show 0 or "No sensor" ==
673
674
675 ~1. The measurement object is very close to the sensor, but in the blind spot of the sensor.
676
677 2. Sensor wiring is disconnected
678
679 3. Not using the correct decoder
680
681
682 == 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 ==
683
684
685 1) Please check if there is something on the probe affecting its measurement (condensed water, volatile oil, etc.)
686
687 2) Does it change with temperature, temperature will affect its measurement
688
689 3) If abnormal data occurs, you can turn on DEBUG mode, Please use downlink or AT COMMAN to enter DEBUG mode.
690
691 downlink command: (% style="color:blue" %)**F1 01**(%%), AT command: (% style="color:blue" %)**AT+DDEBUG=1**
692
693 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
694
695 [[image:image-20230113135125-2.png||height="136" width="1057"]]
696
697
698 Its original payload will be longer than other data. Even though it is being parsed, it can be seen that it is abnormal data.
699
700 Please send the data to us for check.
701
702
703 = 8. Order Info =
704
705
706 Part Number: (% style="color:blue" %)**DDS75-LB-XXX**
707
708 (% style="color:red" %)**XXX**(%%): **The default frequency band**
709
710 * (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
711
712 * (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
713
714 * (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
715
716 * (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
717
718 * (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
719
720 * (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
721
722 * (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
723
724 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
725
726
727
728 = 9. ​Packing Info =
729
730
731 (% style="color:#037691" %)**Package Includes**:
732
733 * DDS75-LB LoRaWAN Distance Detection Sensor x 1
734
735 (% style="color:#037691" %)**Dimension and weight**:
736
737 * Device Size: cm
738
739 * Device Weight: g
740
741 * Package Size / pcs : cm
742
743 * Weight / pcs : g
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]].