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Version 171.1 by Mengting Qiu on 2025/07/18 18:32
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1 [[image:1654846127817-788.png||data-xwiki-image-style-alignment="center" _mstalt="299377"]]
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7 **Table of Contents:**
8
9 {{toc/}}
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17
18 = 1.  Introduction =
19
20 == 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
21
22 (((
23
24
25 (((
26 (((
27 The Dragino LDDS75 is a (% style="color:#4472c4" %)** 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:#4472c4" %)** ultrasonic sensing** (%%)technology for distance measurement, and (% style="color:#4472c4" %)** temperature compensation**(%%) is performed internally to improve the reliability of data. The LDDS75 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.
28 )))
29
30 (((
31 It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
32 )))
33
34 (((
35 The LoRa wireless technology used in LDDS75 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.
36 )))
37
38 (((
39 LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
40 )))
41
42 (((
43 Each LDDS75 pre-loads with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect if there is network coverage, after power on.
44 )))
45
46 (((
47 (% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
48 )))
49 )))
50 )))
51
52
53 [[image:1654847051249-359.png||_mstalt="296920"]]
54
55
56 == ​1.2  Features ==
57
58
59 * LoRaWAN 1.0.3 Class A
60 * Ultra low power consumption
61 * Distance Detection by Ultrasonic technology
62 * Flat object range 280mm - 7500mm
63 * Accuracy: ±(1cm+S*0.3%) (S: Distance)
64 * Cable Length : 25cm
65 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
66 * AT Commands to change parameters
67 * Uplink on periodically
68 * Downlink to change configure
69 * IP66 Waterproof Enclosure
70 * 4000mAh or 8500mAh Battery for long term use
71
72 == 1.3  Specification ==
73
74 === 1.3.1  Rated environmental conditions ===
75
76
77 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
78 |(% style="background-color:#4f81bd; color:white; width:163px" %)**Item**|(% style="background-color:#4f81bd; color:white; width:90px" %)(((
79 **Minimum value**
80 )))|(% style="background-color:#4f81bd; color:white; width:70px" %)(((
81 **Typical value**
82 )))|(% style="background-color:#4f81bd; color:white; width:87px" %)(((
83 **Maximum value**
84 )))|(% style="background-color:#4f81bd; color:white; width:40px" %)**Unit**|(% style="background-color:#4f81bd; color:white; width:50px" %)**Remarks**
85 |(% style="width:174px" %)Storage temperature|(% style="width:86px" %)-25|(% style="width:66px" %)25|(% style="width:90px" %)80|(% style="width:48px" %)℃|(% style="width:203px" %)
86 |(% style="width:174px" %)Storage humidity|(% style="width:86px" %) |(% style="width:66px" %)65%|(% style="width:90px" %)90%|(% style="width:48px" %)RH|(% style="width:203px" %)(1)
87 |(% style="width:174px" %)Operating temperature|(% style="width:86px" %)-15|(% style="width:66px" %)25|(% style="width:90px" %)60|(% style="width:48px" %)℃|(% style="width:203px" %)
88 |(% style="width:174px" %)Working humidity|(% style="width:86px" %)(((
89
90
91
92 )))|(% style="width:66px" %)65%|(% style="width:90px" %)80%|(% style="width:48px" %)RH|(% style="width:203px" %)(1)
93
94 (((
95 **Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
96
97 **~ 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)**
98 )))
99
100
101
102
103 === 1.3.2  Effective measurement range Reference beam pattern ===
104
105
106 **(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
107
108
109
110 [[image:1654852253176-749.png||_mstalt="297557"]]
111
112
113
114 (((
115 **(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.**
116 )))
117
118
119 [[image:1654852175653-550.png||_mstalt="295126"]](% style="display:none" %) ** **
120
121
122 == 1.4 ​ Applications ==
123
124
125 * Horizontal distance measurement
126 * Liquid level measurement
127 * Parking management system
128 * Object proximity and presence detection
129 * Intelligent trash can management system
130 * Robot obstacle avoidance
131 * Automatic control
132 * Sewer
133 * Bottom water level monitoring
134
135 == 1.5  Pin mapping and power on ==
136
137
138 [[image:1654847583902-256.png||_mstalt="296543"]]
139
140
141 = 2.  Configure LDDS75 to connect to LoRaWAN network =
142
143 == 2.1  How it works ==
144
145
146 (((
147 The LDDS75 is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join LoRaWAN network. To connect a LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and power on the LDDS75. If there is coverage of the LoRaWAN network, it will automatically join the network via OTAA and start to send the sensor value
148 )))
149
150 (((
151 In case you can't set the OTAA keys in the LoRaWAN OTAA server, and you have to use the keys from the server, you can [[use AT Commands >>||anchor="H3.A0ConfigureLDDS75viaATCommandorLoRaWANDownlink"]]to set the keys in the LDDS75.
152 )))
153
154
155 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
156
157
158 (((
159 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 [[LG308>>url:http://www.dragino.com/products/lora/item/140-lg308.html]] as a LoRaWAN gateway in this example.
160 )))
161
162 (((
163 [[image:1654848616367-242.png||_mstalt="295984"]]
164 )))
165
166 (((
167 The LG308 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.
168 )))
169
170 (((
171
172
173 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
174 )))
175
176 (((
177 Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
178 )))
179
180 [[image:image-20230426085452-1.png||height="254" width="547"]]
181
182
183 (((
184 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
185
186 **Create the application.**
187
188 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SAC01L_LoRaWAN_Temperature%26Humidity_Sensor_User_Manual/WebHome/image-20250423093843-1.png?width=756&height=264&rev=1.1||alt="image-20250423093843-1.png"]]
189
190 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907111305-2.png?width=1000&height=572&rev=1.1||alt="image-20240907111305-2.png"]]
191
192
193 **Add devices to the created Application.**
194
195 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907111659-3.png?width=977&height=185&rev=1.1||alt="image-20240907111659-3.png"]]
196
197 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907111820-5.png?width=975&height=377&rev=1.1||alt="image-20240907111820-5.png"]]
198
199
200 **Enter end device specifics manually.**
201
202 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907112136-6.png?width=697&height=687&rev=1.1||alt="image-20240907112136-6.png"]]
203
204
205 **Add DevEUI and AppKey. Customize a platform ID for the device.**
206
207 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907112427-7.png?rev=1.1||alt="image-20240907112427-7.png"]]
208
209
210 (% style="color:blue" %)**Step 2**(%%): Add decoder.
211
212 In TTN, user can add a custom payload so it shows friendly reading.
213
214 Click this link to get the decoder: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder/tree/main/>>url:https://github.com/dragino/dragino-end-node-decoder/tree/main/]]
215
216 Below is TTN screen shot:
217
218 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS25-LBLDS25-LS--LoRaWAN_LiDAR_Distance_Auto-Clean_Sensor_User_Manual/WebHome/image-20241009140556-1.png?width=1184&height=488&rev=1.1||alt="image-20241009140556-1.png" height="488" width="1184"]]
219
220 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS25-LBLDS25-LS--LoRaWAN_LiDAR_Distance_Auto-Clean_Sensor_User_Manual/WebHome/image-20241009140603-2.png?width=1168&height=562&rev=1.1||alt="image-20241009140603-2.png" height="562" width="1168"]]
221 )))
222
223
224 (% style="color:blue" %)**Step 3**(%%): Power on LDDS75
225
226 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
227
228 [[image:image-20220610161724-10.png||_mstalt="451464"]]
229
230 The LDDS75 will auto join to the TTN network. After join success, it will start to upload messages to TTN and you can see the messages in the panel.
231
232 [[image:1654849068701-275.png||_mstalt="296205"]]
233
234
235 == 2.3  ​Uplink Payload ==
236
237
238 (((
239 (((
240 LDDS75 will uplink payload via LoRaWAN with below payload format: 
241 )))
242
243 (((
244 Uplink payload includes in total 4 bytes.
245 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
246 )))
247 )))
248
249 (((
250
251 )))
252
253 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
254 |=(% style="width: 62.5px;background-color:#4F81BD;color:white" %)(((
255 **Size(bytes)**
256 )))|=(% style="width: 62.5px;background-color:#4F81BD;color:white" %)**2**|=(% style="background-color:#4F81BD;color:white" %)**2**|=(% style="background-color:#4F81BD;color:white" %)1|=(% style="background-color:#4F81BD;color:white" %)2|=(% style="background-color:#4F81BD;color:white" %)**1**
257 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
258 [[Distance>>||anchor="H2.3.2A0Distance"]]
259 (unit: mm)
260 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
261 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
262 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
263
264 [[image:1654850511545-399.png||_mstalt="296842"]]
265
266
267 === 2.3.1  Battery Info ===
268
269
270 Check the battery voltage for LDDS75.
271
272 Ex1: 0x0B45 = 2885mV
273
274 Ex2: 0x0B49 = 2889mV
275
276
277 === 2.3.2  Distance ===
278
279
280 (((
281 Get the distance. Flat object range 280mm - 7500mm.
282 )))
283
284 (((
285 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" %)** **
286
287 (% style="color:#4472c4" %)**0B05(H) = 2821 (D) = 2821 mm.**
288 )))
289
290
291 * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
292 * 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.
293
294 === 2.3.3  Interrupt Pin ===
295
296
297 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.
298
299 **Example:**
300
301 0x00: Normal uplink packet.
302
303 0x01: Interrupt Uplink Packet.
304
305
306 === 2.3.4  DS18B20 Temperature sensor ===
307
308
309 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
310
311 **Example**:
312
313 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
314
315 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
316
317 f the DS18B12 sensor is not connected, it will display:0CCC/10 =327.60°C
318
319 (% style="color:red" %)**Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.**
320
321
322 === 2.3.5  Sensor Flag ===
323
324
325 (((
326 0x01: Detect Ultrasonic Sensor
327 )))
328
329 (((
330 0x00: No Ultrasonic Sensor
331 )))
332
333
334 === 2.3.6  Decode payload in The Things Network ===
335
336
337 While using TTN network, you can add the payload format to decode the payload.
338
339
340 [[image:1654850829385-439.png||_mstalt="298298"]]
341
342 The payload decoder function for TTN V3 is here:
343
344 (((
345 LDDS75 TTN V3 Payload Decoder:  [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
346 )))
347
348
349 == 2.4  Uplink Interval ==
350
351
352 The LDDS75 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"]]
353
354
355 == 2.5  ​Show Data in DataCake IoT Server ==
356
357
358 (((
359 [[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:
360 )))
361
362 (((
363
364 )))
365
366 (((
367 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
368 )))
369
370 (((
371 (% 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:**
372 )))
373
374
375 [[image:1654592790040-760.png||_mstalt="294294"]]
376
377
378 [[image:1654592800389-571.png||_mstalt="296582"]]
379
380
381 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
382
383 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
384
385 [[image:1654851029373-510.png||_mstalt="293293"]]
386
387
388 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
389
390 [[image:image-20220610165129-11.png||_mstalt="452855" height="595" width="1088"]]
391
392
393 == 2.6  Frequency Plans ==
394
395
396 (((
397 The LDDS75 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.
398 )))
399
400
401 === 2.6.1  EU863-870 (EU868) ===
402
403
404 (((
405 (% style="color:blue" %)**Uplink:**
406 )))
407
408 (((
409 868.1 - SF7BW125 to SF12BW125
410 )))
411
412 (((
413 868.3 - SF7BW125 to SF12BW125 and SF7BW250
414 )))
415
416 (((
417 868.5 - SF7BW125 to SF12BW125
418 )))
419
420 (((
421 867.1 - SF7BW125 to SF12BW125
422 )))
423
424 (((
425 867.3 - SF7BW125 to SF12BW125
426 )))
427
428 (((
429 867.5 - SF7BW125 to SF12BW125
430 )))
431
432 (((
433 867.7 - SF7BW125 to SF12BW125
434 )))
435
436 (((
437 867.9 - SF7BW125 to SF12BW125
438 )))
439
440 (((
441 868.8 - FSK
442 )))
443
444 (((
445
446 )))
447
448 (((
449 (% style="color:blue" %)**Downlink:**
450 )))
451
452 (((
453 Uplink channels 1-9 (RX1)
454 )))
455
456 (((
457 869.525 - SF9BW125 (RX2 downlink only)
458 )))
459
460
461 === 2.6.2  US902-928(US915) ===
462
463
464 (((
465 Used in USA, Canada and South America. Default use CHE=2
466
467 (% style="color:blue" %)**Uplink:**
468
469 903.9 - SF7BW125 to SF10BW125
470
471 904.1 - SF7BW125 to SF10BW125
472
473 904.3 - SF7BW125 to SF10BW125
474
475 904.5 - SF7BW125 to SF10BW125
476
477 904.7 - SF7BW125 to SF10BW125
478
479 904.9 - SF7BW125 to SF10BW125
480
481 905.1 - SF7BW125 to SF10BW125
482
483 905.3 - SF7BW125 to SF10BW125
484
485
486 (% style="color:blue" %)**Downlink:**
487
488 923.3 - SF7BW500 to SF12BW500
489
490 923.9 - SF7BW500 to SF12BW500
491
492 924.5 - SF7BW500 to SF12BW500
493
494 925.1 - SF7BW500 to SF12BW500
495
496 925.7 - SF7BW500 to SF12BW500
497
498 926.3 - SF7BW500 to SF12BW500
499
500 926.9 - SF7BW500 to SF12BW500
501
502 927.5 - SF7BW500 to SF12BW500
503
504 923.3 - SF12BW500(RX2 downlink only)
505
506
507 )))
508
509 === 2.6.3  CN470-510 (CN470) ===
510
511
512 (((
513 Used in China, Default use CHE=1
514 )))
515
516 (((
517 (% style="color:blue" %)**Uplink:**
518 )))
519
520 (((
521 486.3 - SF7BW125 to SF12BW125
522 )))
523
524 (((
525 486.5 - SF7BW125 to SF12BW125
526 )))
527
528 (((
529 486.7 - SF7BW125 to SF12BW125
530 )))
531
532 (((
533 486.9 - SF7BW125 to SF12BW125
534 )))
535
536 (((
537 487.1 - SF7BW125 to SF12BW125
538 )))
539
540 (((
541 487.3 - SF7BW125 to SF12BW125
542 )))
543
544 (((
545 487.5 - SF7BW125 to SF12BW125
546 )))
547
548 (((
549 487.7 - SF7BW125 to SF12BW125
550 )))
551
552 (((
553
554 )))
555
556 (((
557 (% style="color:blue" %)**Downlink:**
558 )))
559
560 (((
561 506.7 - SF7BW125 to SF12BW125
562 )))
563
564 (((
565 506.9 - SF7BW125 to SF12BW125
566 )))
567
568 (((
569 507.1 - SF7BW125 to SF12BW125
570 )))
571
572 (((
573 507.3 - SF7BW125 to SF12BW125
574 )))
575
576 (((
577 507.5 - SF7BW125 to SF12BW125
578 )))
579
580 (((
581 507.7 - SF7BW125 to SF12BW125
582 )))
583
584 (((
585 507.9 - SF7BW125 to SF12BW125
586 )))
587
588 (((
589 508.1 - SF7BW125 to SF12BW125
590 )))
591
592 (((
593 505.3 - SF12BW125 (RX2 downlink only)
594 )))
595
596
597 === 2.6.4  AU915-928(AU915) ===
598
599
600 (((
601 Default use CHE=2
602
603 (% style="color:blue" %)**Uplink:**
604
605 916.8 - SF7BW125 to SF12BW125
606
607 917.0 - SF7BW125 to SF12BW125
608
609 917.2 - SF7BW125 to SF12BW125
610
611 917.4 - SF7BW125 to SF12BW125
612
613 917.6 - SF7BW125 to SF12BW125
614
615 917.8 - SF7BW125 to SF12BW125
616
617 918.0 - SF7BW125 to SF12BW125
618
619 918.2 - SF7BW125 to SF12BW125
620
621
622 (% style="color:blue" %)**Downlink:**
623
624 923.3 - SF7BW500 to SF12BW500
625
626 923.9 - SF7BW500 to SF12BW500
627
628 924.5 - SF7BW500 to SF12BW500
629
630 925.1 - SF7BW500 to SF12BW500
631
632 925.7 - SF7BW500 to SF12BW500
633
634 926.3 - SF7BW500 to SF12BW500
635
636 926.9 - SF7BW500 to SF12BW500
637
638 927.5 - SF7BW500 to SF12BW500
639
640 923.3 - SF12BW500(RX2 downlink only)
641
642
643 )))
644
645 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
646
647
648 (((
649 (% style="color:blue" %)**Default Uplink channel:**
650 )))
651
652 (((
653 923.2 - SF7BW125 to SF10BW125
654 )))
655
656 (((
657 923.4 - SF7BW125 to SF10BW125
658 )))
659
660 (((
661
662 )))
663
664 (((
665 (% style="color:blue" %)**Additional Uplink Channel**:
666 )))
667
668 (((
669 (OTAA mode, channel added by JoinAccept message)
670 )))
671
672 (((
673
674 )))
675
676 (((
677 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
678 )))
679
680 (((
681 922.2 - SF7BW125 to SF10BW125
682 )))
683
684 (((
685 922.4 - SF7BW125 to SF10BW125
686 )))
687
688 (((
689 922.6 - SF7BW125 to SF10BW125
690 )))
691
692 (((
693 922.8 - SF7BW125 to SF10BW125
694 )))
695
696 (((
697 923.0 - SF7BW125 to SF10BW125
698 )))
699
700 (((
701 922.0 - SF7BW125 to SF10BW125
702 )))
703
704 (((
705
706 )))
707
708 (((
709 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
710 )))
711
712 (((
713 923.6 - SF7BW125 to SF10BW125
714 )))
715
716 (((
717 923.8 - SF7BW125 to SF10BW125
718 )))
719
720 (((
721 924.0 - SF7BW125 to SF10BW125
722 )))
723
724 (((
725 924.2 - SF7BW125 to SF10BW125
726 )))
727
728 (((
729 924.4 - SF7BW125 to SF10BW125
730 )))
731
732 (((
733 924.6 - SF7BW125 to SF10BW125
734 )))
735
736 (((
737
738 )))
739
740 (((
741 (% style="color:blue" %)**Downlink:**
742 )))
743
744 (((
745 Uplink channels 1-8 (RX1)
746 )))
747
748 (((
749 923.2 - SF10BW125 (RX2)
750 )))
751
752
753 === 2.6.6  KR920-923 (KR920) ===
754
755
756 (((
757 (% style="color:blue" %)**Default channel:**
758 )))
759
760 (((
761 922.1 - SF7BW125 to SF12BW125
762 )))
763
764 (((
765 922.3 - SF7BW125 to SF12BW125
766 )))
767
768 (((
769 922.5 - SF7BW125 to SF12BW125
770 )))
771
772 (((
773
774 )))
775
776 (((
777 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
778 )))
779
780 (((
781 922.1 - SF7BW125 to SF12BW125
782 )))
783
784 (((
785 922.3 - SF7BW125 to SF12BW125
786 )))
787
788 (((
789 922.5 - SF7BW125 to SF12BW125
790 )))
791
792 (((
793 922.7 - SF7BW125 to SF12BW125
794 )))
795
796 (((
797 922.9 - SF7BW125 to SF12BW125
798 )))
799
800 (((
801 923.1 - SF7BW125 to SF12BW125
802 )))
803
804 (((
805 923.3 - SF7BW125 to SF12BW125
806 )))
807
808 (((
809
810 )))
811
812 (((
813 (% style="color:blue" %)**Downlink:**
814 )))
815
816 (((
817 Uplink channels 1-7(RX1)
818 )))
819
820 (((
821 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
822 )))
823
824
825 === 2.6.7  IN865-867 (IN865) ===
826
827
828 (((
829 (% style="color:blue" %)**Uplink:**
830 )))
831
832 (((
833 865.0625 - SF7BW125 to SF12BW125
834 )))
835
836 (((
837 865.4025 - SF7BW125 to SF12BW125
838 )))
839
840 (((
841 865.9850 - SF7BW125 to SF12BW125
842 )))
843
844 (((
845
846 )))
847
848 (((
849 (% style="color:blue" %)**Downlink:**
850 )))
851
852 (((
853 Uplink channels 1-3 (RX1)
854 )))
855
856 (((
857 866.550 - SF10BW125 (RX2)
858 )))
859
860
861 == 2.7  LED Indicator ==
862
863
864 The LDDS75 has an internal LED which is to show the status of different state.
865
866
867 * Blink once when device power on.
868 * The device detects the sensor and flashes 5 times.
869 * Solid ON for 5 seconds once device successful Join the network.
870 * Blink once when device transmit a packet.
871
872 == 2.8  ​Firmware Change Log ==
873
874
875 (((
876 **Firmware download link:  **[[https:~~/~~/www.dropbox.com/sh/47fsmpbfv4qrw2d/AACy5NcU8MCMFVpYITSUfVLPa?dl=0>>https://www.dropbox.com/sh/47fsmpbfv4qrw2d/AACy5NcU8MCMFVpYITSUfVLPa?dl=0]]
877 )))
878
879 (((
880 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
881 )))
882
883
884 == 2.9  Mechanical ==
885
886
887 [[image:image-20220610172003-1.png||_mstalt="425958"]]
888
889
890 [[image:image-20220610172003-2.png||_mstalt="426322"]]
891
892
893 == 2.10 Battery & Power Consumption ==
894
895
896 LSE01 uses ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
897
898 [[**Battery Info & Power Consumption Analyze**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
899
900
901 = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
902
903
904 (((
905 (((
906 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
907 )))
908 )))
909
910 * (((
911 (((
912 AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
913 )))
914 )))
915 * (((
916 (((
917 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
918 )))
919 )))
920
921 (((
922 (((
923
924 )))
925
926 (((
927 There are two kinds of commands to configure LDDS75, they are:
928 )))
929 )))
930
931 * (((
932 (((
933 (% style="color:#4f81bd" %)** General Commands**.
934 )))
935 )))
936
937 (((
938 (((
939 These commands are to configure:
940 )))
941 )))
942
943 * (((
944 (((
945 General system settings like: uplink interval.
946 )))
947 )))
948 * (((
949 (((
950 LoRaWAN protocol & radio related command.
951 )))
952 )))
953
954 (((
955 (((
956 They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
957 )))
958 )))
959
960 (((
961 (((
962
963 )))
964 )))
965
966 * (((
967 (((
968 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
969 )))
970 )))
971
972 (((
973 (((
974 These commands only valid for LDDS75, as below:
975 )))
976 )))
977
978
979
980 == 3.1  Access AT Commands ==
981
982
983 LDDS75 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LDDS75 for using AT command, as below.
984
985
986 [[image:image-20220610172924-4.png||_mstalt="430846" height="483" width="988"]]
987
988
989 Or if you have below board, use below connection:
990
991
992 [[image:image-20220610172924-5.png||_mstalt="431210"]]
993
994
995
996 (((
997 In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LDDS75. LDDS75 will output system info once power on as below:
998 )))
999
1000
1001 [[image:image-20220610172924-6.png||_mstalt="6283212" height="601" width="860"]]
1002
1003
1004 == 3.2  Set Transmit Interval Time ==
1005
1006
1007 Feature: Change LoRaWAN End Node Transmit Interval.
1008
1009 (% style="color:#037691" %)**AT Command: AT+TDC**
1010
1011 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1012 |=(% style="width: 160px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 140px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 210px;background-color:#4F81BD;color:white" %)**Response**
1013 |(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((
1014 30000
1015 OK
1016 the interval is 30000ms = 30s
1017 )))
1018 |(% style="width:156px" %)AT+TDC=60000|(% style="width:137px" %)Set Transmit Interval|(((
1019 OK
1020 Set transmit interval to 60000ms = 60 seconds
1021 )))
1022
1023 (((
1024 (% style="color:#037691" %)**Downlink Command: 0x01**
1025 )))
1026
1027 (((
1028 (((
1029 Format: Command Code (0x01) followed by 3 bytes time value.
1030
1031 (((
1032 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1033 )))
1034
1035 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1036 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1037 )))
1038 )))
1039
1040
1041
1042
1043 == 3.3  Set Interrupt Mode ==
1044
1045
1046 Feature, Set Interrupt mode for GPIO_EXIT.
1047
1048 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1049
1050 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1051 |=(% style="width: 154px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 196px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 160px;background-color:#4F81BD;color:white" %)**Response**
1052 |(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
1053 0
1054 OK
1055 the mode is 0 =No Interruption
1056 )))
1057 |(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
1058 Set Transmit Interval
1059 0. (Disable Interrupt),
1060 ~1. (Trigger by rising and falling edge)
1061 2. (Trigger by falling edge)
1062 3. (Trigger by rising edge)
1063 )))|(% style="width:157px" %)OK
1064
1065 (% style="color:#037691" %)**Downlink Command: 0x06**
1066
1067 Format: Command Code (0x06) followed by 3 bytes.
1068
1069 (((
1070 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1071 )))
1072
1073 * Example 1: Downlink Payload: 06000000  ~/~/ Turn off interrupt mode
1074 * Example 2: Downlink Payload: 06000003  ~/~/ Set the interrupt mode to rising edge trigger
1075
1076 = 4.  FAQ =
1077
1078 == 4.1  What is the frequency plan for LDDS75? ==
1079
1080
1081 LDDS75 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"]]
1082
1083
1084 == 4.2  How to change the LoRa Frequency Bands/Region ==
1085
1086
1087 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1088 When downloading the images, choose the required image file for download. ​
1089
1090
1091 == 4.3  Can I use LDDS75 in condensation environment? ==
1092
1093
1094 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1095
1096
1097 = 5.  Trouble Shooting =
1098
1099 == 5.1  Why I can't join TTN V3 in US915 / AU915 bands? ==
1100
1101
1102 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1103
1104
1105 == 5.2  AT Command input doesn't work ==
1106
1107
1108 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:green" %)**ENTER**(%%) while sending out the command. Some serial tool doesn't send (% style="color:green" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
1109
1110 (((
1111
1112
1113 == 5.3  Why does the sensor reading show 0 or "No sensor" ==
1114
1115
1116 ~1. The measurement object is very close to the sensor, but in the blind spot of the sensor.
1117
1118 2. Sensor wiring is disconnected
1119
1120 3. Not using the correct decoder
1121
1122
1123 == 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 ==
1124
1125
1126 1) Please check if there is something on the probe affecting its measurement (condensed water, volatile oil, etc.)
1127
1128 2) Does it change with temperature, temperature will affect its measurement
1129
1130 3) If abnormal data occurs, you can turn on DEBUG mode, Please use downlink or AT COMMAN to enter DEBUG mode.
1131
1132 downlink command: (% style="color:blue" %)**F1 01**(%%), AT command: (% style="color:blue" %)**AT+DDEBUG=1**
1133
1134 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
1135
1136 [[image:image-20230113135125-2.png||height="136" width="1057"]]
1137 )))
1138
1139 Its original payload will be longer than other data. Even though it is being parsed, it can be seen that it is abnormal data.
1140
1141 Please send the data to us for check.
1142
1143
1144 == 5.5 Why does the LDDS75 sensor keep flashing blue? ==
1145
1146 This may be caused by a software firmware(≤1.1.6 version) bug, which we fixed in the latest firmware (>1.1.6 version)
1147
1148 The user can fix this problem via upgrade firmware.
1149
1150
1151 By default, The latest firmware value of POWERIC is 1, while the 3322 version requires POWERIC to be set to 0 in order to function properly
1152
1153
1154 * **//1. Check if the hardware version is 3322//**
1155
1156 If the sensor hardware version is 3322 or earlier, the user can change the POWERIC value to 0 after a firmware upgrade using one of the following methods
1157
1158 **a. Using AT command**
1159
1160 (% class="box infomessage" %)
1161 (((
1162 AT+POWERIC=0.
1163 )))
1164
1165
1166 **b. Using Downlink**
1167
1168 (% class="box infomessage" %)
1169 (((
1170 FF 00(AT+POWERIC=0).
1171 )))
1172
1173
1174 [[image:image-20240531090837-1.png]]
1175
1176
1177 Please check your hardware production date
1178
1179 The first two digits are the week of the year, and the last two digits are the year.
1180
1181 The number 3322 is the first batch we changed the power IC.
1182
1183
1184 = 6.  Order Info =
1185
1186
1187 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1188
1189 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1190
1191 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1192 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1193 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1194 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1195 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1196 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1197 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1198 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1199
1200 (% style="color:blue" %)**YY**(%%): Battery Option
1201
1202 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1203 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1204
1205 = 7. ​ Packing Info =
1206
1207
1208 **Package Includes**:
1209
1210 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1211
1212 **Dimension and weight**:
1213
1214 * Device Size: cm
1215 * Device Weight: g
1216 * Package Size / pcs : cm
1217 * Weight / pcs : g
1218
1219 = 8.  ​Support =
1220
1221
1222 * 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.
1223 * 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.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]].