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Version 70.28 by Xiaoling on 2023/06/13 09:42
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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
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 == 1.4 Rated environmental conditions ==
85
86
87 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:500px" %)
88 |(% style="background-color:#d9e2f3; color:#0070c0; width:163px" %)**Item**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)(((
89 **Minimum value**
90 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:70px" %)(((
91 **Typical value**
92 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:87px" %)(((
93 **Maximum value**
94 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**Unit**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**Remarks**
95 |(% style="width:174px" %)Storage temperature|(% style="width:86px" %)-25|(% style="width:66px" %)25|(% style="width:90px" %)80|(% style="width:48px" %)℃|(% style="width:203px" %)
96 |(% style="width:174px" %)Storage humidity|(% style="width:86px" %) |(% style="width:66px" %)65%|(% style="width:90px" %)90%|(% style="width:48px" %)RH|(% style="width:203px" %)(1)
97 |(% style="width:174px" %)Operating temperature|(% style="width:86px" %)-15|(% style="width:66px" %)25|(% style="width:90px" %)60|(% style="width:48px" %)℃|(% style="width:203px" %)
98 |(% style="width:174px" %)Working humidity|(% style="width:86px" %)(((
99
100
101
102 )))|(% style="width:66px" %)65%|(% style="width:90px" %)80%|(% style="width:48px" %)RH|(% style="width:203px" %)(1)
103
104 (((
105 (% style="color:red" %)**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
106
107 (% 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)**
108
109
110 )))
111
112 == 1.5 Effective measurement range Reference beam pattern ==
113
114
115 (% 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.**
116
117 [[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"]]
118
119
120 (% 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.**
121
122 [[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"]]
123
124
125 == 1.6 Applications ==
126
127
128 * Horizontal distance measurement
129 * Liquid level measurement
130 * Parking management system
131 * Object proximity and presence detection
132 * Intelligent trash can management system
133 * Robot obstacle avoidance
134 * Automatic control
135 * Sewer
136 * Bottom water level monitoring
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 == 1.9 BLE connection ==
166
167
168 DDS75-LB support BLE remote configure.
169
170
171 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:
172
173 * Press button to send an uplink
174 * Press button to active device.
175 * Device Power on or reset.
176
177 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
178
179
180 == 1.10 Pin Definitions ==
181
182 [[image:image-20230523174230-1.png]]
183
184
185
186
187 == 1.11 Mechanical ==
188
189
190 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
191
192
193 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]
194
195
196 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]
197
198
199 (% style="color:blue" %)**Probe Mechanical:**
200
201
202 [[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"]]
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-20220610172003-2.png?rev=1.1||alt="image-20220610172003-2.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 = 2. Configure DDS75-LB to connect to LoRaWAN network =
212
213 == 2.1 How it works ==
214
215
216 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.
217
218 (% style="display:none" %) (%%)
219
220 == 2.2 ​Quick guide to connect to LoRaWAN server (OTAA) ==
221
222
223 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.
224
225 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.
226
227 [[image:image-20230612171032-3.png||height="492" width="855"]](% style="display:none" %)
228
229
230 (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DDS75-LB.
231
232 Each DDS75-LB is shipped with a sticker with the default device EUI as below:
233
234 [[image:image-20230426084152-1.png||alt="图片-20230426084152-1.png" height="233" width="502"]]
235
236
237 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
238
239
240 (% style="color:blue" %)**Register the device**
241
242 [[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"]]
243
244
245 (% style="color:blue" %)**Add APP EUI and DEV EUI**
246
247 [[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"]]
248
249
250 (% style="color:blue" %)**Add APP EUI in the application**
251
252
253 [[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"]]
254
255
256 (% style="color:blue" %)**Add APP KEY**
257
258 [[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"]]
259
260
261 (% style="color:blue" %)**Step 2:**(%%) Activate on DDS75-LB
262
263
264 Press the button for 5 seconds to activate the DDS75-LB.
265
266 (% 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.
267
268 After join success, it will start to upload messages to TTN and you can see the messages in the panel.
269
270
271 == 2.3  ​Uplink Payload ==
272
273
274 (((
275 DDS75-LB will uplink payload via LoRaWAN with below payload format: 
276 )))
277
278 (((
279 Uplink payload includes in total 8 bytes.
280 )))
281
282 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
283 |=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)(((
284 **Size(bytes)**
285 )))|=(% 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**
286 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
287 [[Distance>>||anchor="H2.3.2A0Distance"]]
288 (unit: mm)
289 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
290 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
291 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
292
293 [[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"]]
294
295
296 === 2.3.1  Battery Info ===
297
298
299 Check the battery voltage for DDS75-LB.
300
301 Ex1: 0x0B45 = 2885mV
302
303 Ex2: 0x0B49 = 2889mV
304
305
306 === 2.3.2  Distance ===
307
308
309 (((
310 Get the distance. Flat object range 280mm - 7500mm.
311 )))
312
313 (((
314 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" %)** **
315
316 (% style="color:#4472c4" %)**0B05(H) = 2821 (D) = 2821 mm.**
317 )))
318
319
320 * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
321 * 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.
322
323 === 2.3.3  Interrupt Pin ===
324
325
326 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.
327
328 **Example:**
329
330 0x00: Normal uplink packet.
331
332 0x01: Interrupt Uplink Packet.
333
334
335 === 2.3.4  DS18B20 Temperature sensor ===
336
337
338 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
339
340 **Example**:
341
342 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
343
344 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
345
346
347 === 2.3.5  Sensor Flag ===
348
349
350 (((
351 0x01: Detect Ultrasonic Sensor
352 )))
353
354 (((
355 0x00: No Ultrasonic Sensor
356 )))
357
358
359 === 2.3.6  Decode payload in The Things Network ===
360
361
362 While using TTN network, you can add the payload format to decode the payload.
363
364 [[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"]]
365
366 The payload decoder function for TTN V3 is here:
367
368 (((
369 DDS75-LB TTN V3 Payload Decoder:  [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
370 )))
371
372
373 == 2.4  Uplink Interval ==
374
375
376 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"]]
377
378
379 == 2.5  ​Show Data in DataCake IoT Server ==
380
381
382 (((
383 [[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:
384 )))
385
386
387 (((
388 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
389 )))
390
391 (((
392 (% 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:**
393 )))
394
395
396 [[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"]]
397
398
399 [[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"]]
400
401
402 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
403
404 (% style="color:blue" %)**Step 4**(%%)**: Search the DDS75-LB and add DevEUI.**
405
406 [[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"]]
407
408
409 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
410
411 [[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"]]
412
413
414
415 == 2.6 Datalog Feature ==
416
417
418 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.
419
420
421 === 2.6.1 Ways to get datalog via LoRaWAN ===
422
423
424 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.
425
426 * (((
427 a) DDS75-LB will do an ACK check for data records sending to make sure every data arrive server.
428 )))
429 * (((
430 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.
431 )))
432
433 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
434
435 [[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"]]
436
437
438 === 2.6.2 Unix TimeStamp ===
439
440
441 DDS75-LB uses Unix TimeStamp format based on
442
443 [[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"]]
444
445 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
446
447 Below is the converter example
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-20220523001219-12.png?width=720&height=298&rev=1.1||alt="图片-20220523001219-12.png" height="298" width="720"]]
450
451
452 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
453
454
455 === 2.6.3 Set Device Time ===
456
457
458 User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command.
459
460 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).
461
462 (% 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.**
463
464
465 === 2.6.4 Poll sensor value ===
466
467
468 Users can poll sensor values based on timestamps. Below is the downlink command.
469
470 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:425.818px" %)
471 |(% colspan="4" style="background-color:#d9e2f3; color:#0070c0; width:423px" %)**Downlink Command to poll Open/Close status (0x31)**
472 |(% style="width:58px" %)**1byte**|(% style="width:127px" %)**4bytes**|(% style="width:124px" %)**4bytes**|(% style="width:114px" %)**1byte**
473 |(% style="width:58px" %)31|(% style="width:127px" %)Timestamp start|(% style="width:124px" %)Timestamp end|(% style="width:114px" %)Uplink Interval
474
475 (((
476 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.
477 )))
478
479 (((
480 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"]]
481 )))
482
483 (((
484 Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00's data
485 )))
486
487 (((
488 Uplink Internal =5s，means DDS75-LB will send one packet every 5s. range 5~~255s.
489 )))
490
491
492 == 2.7 Frequency Plans ==
493
494
495 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.
496
497 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
498
499
500 = 3. Configure DDS75-LB =
501
502 == 3.1 Configure Methods ==
503
504
505 DDS75-LB supports below configure method:
506
507 * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
508
509 * 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]].
510
511 * LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
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 === 3.3.2 Set Interrupt Mode ===
576
577
578 Feature, Set Interrupt mode for PA8 of pin.
579
580 When AT+INTMOD=0 is set, PA8 is used as a digital input port.
581
582 (% style="color:blue" %)**AT Command: AT+INTMOD**
583
584 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
585 |=(% 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**
586 |(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
587 0
588 OK
589 the mode is 0 =Disable Interrupt
590 )))
591 |(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
592 Set Transmit Interval
593 0. (Disable Interrupt),
594 ~1. (Trigger by rising and falling edge)
595 2. (Trigger by falling edge)
596 3. (Trigger by rising edge)
597 )))|(% style="width:157px" %)OK
598
599 (% style="color:blue" %)**Downlink Command: 0x06**
600
601 Format: Command Code (0x06) followed by 3 bytes.
602
603 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
604
605 * Example 1: Downlink Payload: 06000000  ~/~/  Turn off interrupt mode
606
607 * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
608
609 = 4. Battery & Power Consumption =
610
611
612 DDS75-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
613
614 [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
615
616
617 = 5. OTA Firmware update =
618
619
620 (% class="wikigeneratedid" %)
621 User can change firmware DDS75-LB to:
622
623 * Change Frequency band/ region.
624
625 * Update with new features.
626
627 * Fix bugs.
628
629 Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/7la95mae0fn03xe/AACtzs-32m22TLb75B-iIr-Qa?dl=0]]**
630
631 Methods to Update Firmware:
632
633 * (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/]]
634
635 * 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]]**.
636
637 = 6. FAQ =
638
639 == 6.1  What is the frequency plan for DDS75-LB? ==
640
641
642 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"]]
643
644
645 == 6.2  Can I use DDS75-LB in condensation environment? ==
646
647
648 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.
649
650
651 = 7.  Trouble Shooting =
652
653 == 7.1  Why I can't join TTN V3 in US915 / AU915 bands? ==
654
655
656 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
657
658
659 == 7.2  AT Command input doesn't work ==
660
661
662 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.
663
664
665 == 7.3  Why does the sensor reading show 0 or "No sensor" ==
666
667
668 ~1. The measurement object is very close to the sensor, but in the blind spot of the sensor.
669
670 2. Sensor wiring is disconnected
671
672 3. Not using the correct decoder
673
674
675 == 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 ==
676
677
678 1) Please check if there is something on the probe affecting its measurement (condensed water, volatile oil, etc.)
679
680 2) Does it change with temperature, temperature will affect its measurement
681
682 3) If abnormal data occurs, you can turn on DEBUG mode, Please use downlink or AT COMMAN to enter DEBUG mode.
683
684 downlink command: (% style="color:blue" %)**F1 01**(%%), AT command: (% style="color:blue" %)**AT+DDEBUG=1**
685
686 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
687
688 [[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"]]
689
690
691 Its original payload will be longer than other data. Even though it is being parsed, it can be seen that it is abnormal data.
692
693 Please send the data to us for check.
694
695
696 = 8. Order Info =
697
698
699 Part Number: (% style="color:blue" %)**DDS75-LB-XXX**
700
701 (% style="color:red" %)**XXX**(%%): **The default frequency band**
702
703 * (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
704
705 * (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
706
707 * (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
708
709 * (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
710
711 * (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
712
713 * (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
714
715 * (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
716
717 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
718
719 = 9. ​Packing Info =
720
721
722 (% style="color:#037691" %)**Package Includes**:
723
724 * DDS75-LB LoRaWAN Distance Detection Sensor x 1
725
726 (% style="color:#037691" %)**Dimension and weight**:
727
728 * Device Size: cm
729
730 * Device Weight: g
731
732 * Package Size / pcs : cm
733
734 * Weight / pcs : g
735
736 = 10. Support =
737
738
739 * 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.
740
741 * 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]].