Skip to Content
Version 71.1 by Ellie Zhang on 2023/07/02 14:10
Show last authors
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
55 == 1.3 Specification ==
56
57
58 (% style="color:#037691" %)**Common DC Characteristics:**
59
60 * Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~~ 3.6v
61 * Operating Temperature: -40 ~~ 85°C
62
63 (% style="color:#037691" %)**LoRa Spec:**
64
65 * Frequency Range,  Band 1 (HF): 862 ~~ 1020 Mhz
66 * Max +22 dBm constant RF output vs.
67 * RX sensitivity: down to -139 dBm.
68 * Excellent blocking immunity
69
70 (% style="color:#037691" %)**Battery:**
71
72 * Li/SOCI2 un-chargeable battery
73 * Capacity: 8500mAh
74 * Self-Discharge: <1% / Year @ 25°C
75 * Max continuously current: 130mA
76 * Max boost current: 2A, 1 second
77
78 (% style="color:#037691" %)**Power Consumption**
79
80 * Sleep Mode: 5uA @ 3.3v
81 * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
82
83
84
85 == 1.4 Rated environmental conditions ==
86
87
88 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:500px" %)
89 |(% style="background-color:#d9e2f3; color:#0070c0; width:163px" %)**Item**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)(((
90 **Minimum value**
91 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:70px" %)(((
92 **Typical value**
93 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:87px" %)(((
94 **Maximum value**
95 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**Unit**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**Remarks**
96 |(% style="width:174px" %)Storage temperature|(% style="width:86px" %)-25|(% style="width:66px" %)25|(% style="width:90px" %)80|(% style="width:48px" %)℃|(% style="width:203px" %)
97 |(% style="width:174px" %)Storage humidity|(% style="width:86px" %) |(% style="width:66px" %)65%|(% style="width:90px" %)90%|(% style="width:48px" %)RH|(% style="width:203px" %)(1)
98 |(% style="width:174px" %)Operating temperature|(% style="width:86px" %)-15|(% style="width:66px" %)25|(% style="width:90px" %)60|(% style="width:48px" %)℃|(% style="width:203px" %)
99 |(% style="width:174px" %)Working humidity|(% style="width:86px" %)(((
100
101
102
103 )))|(% style="width:66px" %)65%|(% style="width:90px" %)80%|(% style="width:48px" %)RH|(% style="width:203px" %)(1)
104
105 (((
106 (% style="color:red" %)**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
107
108 (% 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)**
109
110
111 )))
112
113 == 1.5 Effective measurement range Reference beam pattern ==
114
115
116 (% 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.**
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/1654852253176-749.png?rev=1.1||alt="1654852253176-749.png"]]
119
120
121 (% 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.**
122
123 [[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"]]
124
125
126 == 1.6 Applications ==
127
128
129 * Horizontal distance measurement
130 * Liquid level measurement
131 * Parking management system
132 * Object proximity and presence detection
133 * Intelligent trash can management system
134 * Robot obstacle avoidance
135 * Automatic control
136 * Sewer
137 * Bottom water level monitoring
138
139
140
141 == 1.7 Sleep mode and working mode ==
142
143
144 (% 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.
145
146 (% 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.
147
148
149 == 1.8 Button & LEDs ==
150
151
152 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
153
154
155 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
156 |=(% 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**
157 |(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
158 If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
159 Meanwhile, BLE module will be active and user can connect via BLE to configure device.
160 )))
161 |(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
162 (% 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.
163 (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
164 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.
165 )))
166 |(% 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.
167
168
169
170 == 1.9 BLE connection ==
171
172
173 DDS75-LB support BLE remote configure.
174
175
176 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:
177
178 * Press button to send an uplink
179 * Press button to active device.
180 * Device Power on or reset.
181
182 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
183
184
185 == 1.10 Pin Definitions ==
186
187 [[image:image-20230523174230-1.png]]
188
189
190 == 1.11 Mechanical ==
191
192
193 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
194
195
196 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]
197
198
199 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]
200
201
202 (% style="color:blue" %)**Probe Mechanical:**
203
204
205 [[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"]]
206
207
208 [[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"]]
209
210
211 [[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"]]
212
213
214 = 2. Configure DDS75-LB to connect to LoRaWAN network =
215
216 == 2.1 How it works ==
217
218
219 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.
220
221 (% style="display:none" %) (%%)
222
223 == 2.2 ​Quick guide to connect to LoRaWAN server (OTAA) ==
224
225
226 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.
227
228 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.
229
230 [[image:image-20230612171032-3.png||height="492" width="855"]](% style="display:none" %)
231
232
233 (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DDS75-LB.
234
235 Each DDS75-LB is shipped with a sticker with the default device EUI as below:
236
237 [[image:image-20230426084152-1.png||alt="图片-20230426084152-1.png" height="233" width="502"]]
238
239
240 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
241
242
243 (% style="color:blue" %)**Register the device**
244
245 [[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"]]
246
247
248 (% style="color:blue" %)**Add APP EUI and DEV EUI**
249
250 [[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"]]
251
252
253 (% style="color:blue" %)**Add APP EUI in the application**
254
255
256 [[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"]]
257
258
259 (% style="color:blue" %)**Add APP KEY**
260
261 [[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"]]
262
263
264 (% style="color:blue" %)**Step 2:**(%%) Activate on DDS75-LB
265
266
267 Press the button for 5 seconds to activate the DDS75-LB.
268
269 (% 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.
270
271 After join success, it will start to upload messages to TTN and you can see the messages in the panel.
272
273
274 == 2.3  ​Uplink Payload ==
275
276
277 (((
278 DDS75-LB will uplink payload via LoRaWAN with below payload format: 
279 )))
280
281 (((
282 Uplink payload includes in total 8 bytes.
283 )))
284
285 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
286 |=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)(((
287 **Size(bytes)**
288 )))|=(% 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**
289 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
290 [[Distance>>||anchor="H2.3.2A0Distance"]]
291 (unit: mm)
292 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
293 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
294 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
295
296 [[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"]]
297
298
299 === 2.3.1  Battery Info ===
300
301
302 Check the battery voltage for DDS75-LB.
303
304 Ex1: 0x0B45 = 2885mV
305
306 Ex2: 0x0B49 = 2889mV
307
308
309 === 2.3.2  Distance ===
310
311
312 (((
313 Get the distance. Flat object range 280mm - 7500mm.
314 )))
315
316 (((
317 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" %)** **
318
319 (% style="color:#4472c4" %)**0B05(H) = 2821 (D) = 2821 mm.**
320 )))
321
322 * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
323 * 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.
324
325
326
327 === 2.3.3  Interrupt Pin ===
328
329
330 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.
331
332 **Example:**
333
334 0x00: Normal uplink packet.
335
336 0x01: Interrupt Uplink Packet.
337
338
339 === 2.3.4  DS18B20 Temperature sensor ===
340
341
342 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
343
344 **Example**:
345
346 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
347
348 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
349
350
351 === 2.3.5  Sensor Flag ===
352
353
354 (((
355 0x01: Detect Ultrasonic Sensor
356 )))
357
358 (((
359 0x00: No Ultrasonic Sensor
360 )))
361
362
363 === 2.3.6  Decode payload in The Things Network ===
364
365
366 While using TTN network, you can add the payload format to decode the payload.
367
368 [[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"]]
369
370 The payload decoder function for TTN V3 is here:
371
372 (((
373 DDS75-LB TTN V3 Payload Decoder:  [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
374 )))
375
376
377 == 2.4  Uplink Interval ==
378
379
380 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"]]
381
382
383 == 2.5  ​Show Data in DataCake IoT Server ==
384
385
386 (((
387 [[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:
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
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
582 )))
583
584 === 3.3.2 Set Interrupt Mode ===
585
586
587 Feature, Set Interrupt mode for PA8 of pin.
588
589 When AT+INTMOD=0 is set, PA8 is used as a digital input port.
590
591 (% style="color:blue" %)**AT Command: AT+INTMOD**
592
593 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
594 |=(% 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**
595 |(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
596 0
597 OK
598 the mode is 0 =Disable Interrupt
599 )))
600 |(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
601 Set Transmit Interval
602 0. (Disable Interrupt),
603 ~1. (Trigger by rising and falling edge)
604 2. (Trigger by falling edge)
605 3. (Trigger by rising edge)
606 )))|(% style="width:157px" %)OK
607
608 (% style="color:blue" %)**Downlink Command: 0x06**
609
610 Format: Command Code (0x06) followed by 3 bytes.
611
612 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
613
614 * Example 1: Downlink Payload: 06000000  ~/~/  Turn off interrupt mode
615
616 * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
617
618
619
620 = 4. Battery & Power Consumption =
621
622
623 DDS75-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
624
625 [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
626
627
628 = 5. OTA Firmware update =
629
630
631 (% class="wikigeneratedid" %)
632 User can change firmware DDS75-LB to:
633
634 * Change Frequency band/ region.
635
636 * Update with new features.
637
638 * Fix bugs.
639
640 Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/7la95mae0fn03xe/AACtzs-32m22TLb75B-iIr-Qa?dl=0]]**
641
642 Methods to Update Firmware:
643
644 * (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/]]
645
646 * 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]]**.
647
648
649
650 = 6. FAQ =
651
652 == 6.1  What is the frequency plan for DDS75-LB? ==
653
654
655 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"]]
656
657
658 == 6.2  Can I use DDS75-LB in condensation environment? ==
659
660
661 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.
662
663
664 = 7.  Trouble Shooting =
665
666 == 7.1  Why I can't join TTN V3 in US915 / AU915 bands? ==
667
668
669 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
670
671
672 == 7.2  AT Command input doesn't work ==
673
674
675 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.
676
677
678 == 7.3  Why does the sensor reading show 0 or "No sensor" ==
679
680
681 ~1. The measurement object is very close to the sensor, but in the blind spot of the sensor.
682
683 2. Sensor wiring is disconnected
684
685 3. Not using the correct decoder
686
687
688 == 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 ==
689
690
691 1) Please check if there is something on the probe affecting its measurement (condensed water, volatile oil, etc.)
692
693 2) Does it change with temperature, temperature will affect its measurement
694
695 3) If abnormal data occurs, you can turn on DEBUG mode, Please use downlink or AT COMMAN to enter DEBUG mode.
696
697 downlink command: (% style="color:blue" %)**F1 01**(%%), AT command: (% style="color:blue" %)**AT+DDEBUG=1**
698
699 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
700
701 [[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"]]
702
703
704 Its original payload will be longer than other data. Even though it is being parsed, it can be seen that it is abnormal data.
705
706 Please send the data to us for check.
707
708
709 = 8. Order Info =
710
711
712 Part Number: (% style="color:blue" %)**DDS75-LB-XXX**
713
714 (% style="color:red" %)**XXX**(%%): **The default frequency band**
715
716 * (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
717
718 * (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
719
720 * (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
721
722 * (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
723
724 * (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
725
726 * (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
727
728 * (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
729
730 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
731
732
733
734 = 9. ​Packing Info =
735
736
737 (% style="color:#037691" %)**Package Includes**:
738
739 * DDS75-LB LoRaWAN Distance Detection Sensor x 1
740
741 (% style="color:#037691" %)**Dimension and weight**:
742
743 * Device Size: cm
744
745 * Device Weight: g
746
747 * Package Size / pcs : cm
748
749 * Weight / pcs : g
750
751
752
753 = 10. Support =
754
755
756 * 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.
757
758 * 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]].