Version 152.4 by Xiaoling on 2022/06/14 17:19
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1 (% style="text-align:center" %)
2 [[image:1654846127817-788.png]]
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4
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6
7
8 **Table of Contents:**
9
10 {{toc/}}
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16
17
18
19 = 1.  Introduction =
20
21 == 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
22
23 (((
24
25
26 (((
27 (((
28 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.
29 )))
30
31 (((
32 It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
33 )))
34
35 (((
36 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.
37 )))
38
39 (((
40 LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
41 )))
42
43 (((
44 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.
45 )))
46
47 (((
48 (% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
49 )))
50 )))
51 )))
52
53
54 [[image:1654847051249-359.png]]
55
56
57
58 == ​1.2  Features ==
59
60 * LoRaWAN 1.0.3 Class A
61 * Ultra low power consumption
62 * Distance Detection by Ultrasonic technology
63 * Flat object range 280mm - 7500mm
64 * Accuracy: ±(1cm+S*0.3%) (S: Distance)
65 * Cable Length : 25cm
66 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
67 * AT Commands to change parameters
68 * Uplink on periodically
69 * Downlink to change configure
70 * IP66 Waterproof Enclosure
71 * 4000mAh or 8500mAh Battery for long term use
72
73
74
75 == 1.3  Specification ==
76
77 === 1.3.1  Rated environmental conditions ===
78
79 [[image:image-20220610154839-1.png]]
80
81 (((
82 **Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);  **
83
84 **~ 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)**
85 )))
86
87
88
89 === 1.3.2  Effective measurement range Reference beam pattern ===
90
91 **(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
92
93
94
95 [[image:1654852253176-749.png]]
96
97
98
99 (((
100 **(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.**
101 )))
102
103
104 [[image:1654852175653-550.png]](% style="display:none" %) ** **
105
106
107
108 == 1.5 ​ Applications ==
109
110 * Horizontal distance measurement
111 * Liquid level measurement
112 * Parking management system
113 * Object proximity and presence detection
114 * Intelligent trash can management system
115 * Robot obstacle avoidance
116 * Automatic control
117 * Sewer
118 * Bottom water level monitoring
119
120
121
122 == 1.6  Pin mapping and power on ==
123
124
125 [[image:1654847583902-256.png]]
126
127
128
129 = 2.  Configure LDDS75 to connect to LoRaWAN network =
130
131 == 2.1  How it works ==
132
133 (((
134 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
135 )))
136
137 (((
138 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.
139 )))
140
141
142
143 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
144
145 (((
146 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.
147 )))
148
149 (((
150 [[image:1654848616367-242.png]]
151 )))
152
153 (((
154 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.
155 )))
156
157 (((
158
159
160 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
161 )))
162
163 (((
164 Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
165 )))
166
167 [[image:image-20220607170145-1.jpeg]]
168
169
170 (((
171 For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
172 )))
173
174 (((
175 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
176 )))
177
178 (((
179
180
181 **Add APP EUI in the application**
182 )))
183
184 [[image:image-20220610161353-4.png]]
185
186 [[image:image-20220610161353-5.png]]
187
188 [[image:image-20220610161353-6.png]]
189
190
191 [[image:image-20220610161353-7.png]]
192
193
194 You can also choose to create the device manually.
195
196 [[image:image-20220610161538-8.png]]
197
198
199
200 **Add APP KEY and DEV EUI**
201
202 [[image:image-20220610161538-9.png]]
203
204
205
206 (% style="color:blue" %)**Step 2**(%%): Power on LDDS75
207
208
209 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
210
211 [[image:image-20220610161724-10.png]]
212
213
214 (((
215 (% style="color:blue" %)**Step 3**(%%)**:** 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.
216 )))
217
218 [[image:1654849068701-275.png]]
219
220
221
222 == 2.3  ​Uplink Payload ==
223
224 (((
225 (((
226 LDDS75 will uplink payload via LoRaWAN with below payload format: 
227 )))
228
229 (((
230 Uplink payload includes in total 4 bytes.
231 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
232 )))
233 )))
234
235 (((
236
237 )))
238
239 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
240 |=(% style="width: 62.5px;" %)(((
241 **Size (bytes)**
242 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
243 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
244 [[Distance>>||anchor="H2.3.2A0Distance"]]
245
246 (unit: mm)
247 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
248 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
249 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
250
251 [[image:1654850511545-399.png]]
252
253
254
255 === 2.3.1  Battery Info ===
256
257
258 Check the battery voltage for LDDS75.
259
260 Ex1: 0x0B45 = 2885mV
261
262 Ex2: 0x0B49 = 2889mV
263
264
265
266 === 2.3.2  Distance ===
267
268 (((
269 Get the distance. Flat object range 280mm - 7500mm.
270 )))
271
272 (((
273 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" %)** 0B05(H) = 2821 (D) = 2821 mm.**
274 )))
275
276
277 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
278 * 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.
279
280
281
282 === 2.3.3  Interrupt Pin ===
283
284 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.
285
286 **Example:**
287
288 0x00: Normal uplink packet.
289
290 0x01: Interrupt Uplink Packet.
291
292
293
294 === 2.3.4  DS18B20 Temperature sensor ===
295
296 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
297
298 **Example**:
299
300 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
301
302 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
303
304 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
305
306
307
308 === 2.3.5  Sensor Flag ===
309
310 (((
311 0x01: Detect Ultrasonic Sensor
312 )))
313
314 (((
315 0x00: No Ultrasonic Sensor
316 )))
317
318
319
320 === 2.3.6  Decode payload in The Things Network ===
321
322 While using TTN network, you can add the payload format to decode the payload.
323
324
325 [[image:1654850829385-439.png]]
326
327 The payload decoder function for TTN V3 is here:
328
329 (((
330 LDDS75 TTN V3 Payload Decoder: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS75/Payload_Decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/]]
331 )))
332
333
334
335 == 2.4  Uplink Interval ==
336
337 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"]]
338
339
340
341 == 2.5  ​Show Data in DataCake IoT Server ==
342
343 (((
344 [[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:
345 )))
346
347 (((
348
349 )))
350
351 (((
352 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
353 )))
354
355 (((
356 (% 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:**
357 )))
358
359
360 [[image:1654592790040-760.png]]
361
362
363 [[image:1654592800389-571.png]]
364
365
366 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
367
368 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
369
370 [[image:1654851029373-510.png]]
371
372
373 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
374
375 [[image:image-20220610165129-11.png||height="595" width="1088"]]
376
377
378
379 == 2.6  Frequency Plans ==
380
381 (((
382 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.
383 )))
384
385
386
387 === 2.6.1  EU863-870 (EU868) ===
388
389 (((
390 (% style="color:blue" %)**Uplink:**
391 )))
392
393 (((
394 868.1 - SF7BW125 to SF12BW125
395 )))
396
397 (((
398 868.3 - SF7BW125 to SF12BW125 and SF7BW250
399 )))
400
401 (((
402 868.5 - SF7BW125 to SF12BW125
403 )))
404
405 (((
406 867.1 - SF7BW125 to SF12BW125
407 )))
408
409 (((
410 867.3 - SF7BW125 to SF12BW125
411 )))
412
413 (((
414 867.5 - SF7BW125 to SF12BW125
415 )))
416
417 (((
418 867.7 - SF7BW125 to SF12BW125
419 )))
420
421 (((
422 867.9 - SF7BW125 to SF12BW125
423 )))
424
425 (((
426 868.8 - FSK
427 )))
428
429 (((
430
431 )))
432
433 (((
434 (% style="color:blue" %)**Downlink:**
435 )))
436
437 (((
438 Uplink channels 1-9 (RX1)
439 )))
440
441 (((
442 869.525 - SF9BW125 (RX2 downlink only)
443 )))
444
445
446
447 === 2.6.2  US902-928(US915) ===
448
449 (((
450 Used in USA, Canada and South America. Default use CHE=2
451
452 (% style="color:blue" %)**Uplink:**
453
454 903.9 - SF7BW125 to SF10BW125
455
456 904.1 - SF7BW125 to SF10BW125
457
458 904.3 - SF7BW125 to SF10BW125
459
460 904.5 - SF7BW125 to SF10BW125
461
462 904.7 - SF7BW125 to SF10BW125
463
464 904.9 - SF7BW125 to SF10BW125
465
466 905.1 - SF7BW125 to SF10BW125
467
468 905.3 - SF7BW125 to SF10BW125
469
470
471 (% style="color:blue" %)**Downlink:**
472
473 923.3 - SF7BW500 to SF12BW500
474
475 923.9 - SF7BW500 to SF12BW500
476
477 924.5 - SF7BW500 to SF12BW500
478
479 925.1 - SF7BW500 to SF12BW500
480
481 925.7 - SF7BW500 to SF12BW500
482
483 926.3 - SF7BW500 to SF12BW500
484
485 926.9 - SF7BW500 to SF12BW500
486
487 927.5 - SF7BW500 to SF12BW500
488
489 923.3 - SF12BW500(RX2 downlink only)
490
491
492
493 )))
494
495 === 2.6.3  CN470-510 (CN470) ===
496
497 (((
498 Used in China, Default use CHE=1
499 )))
500
501 (((
502 (% style="color:blue" %)**Uplink:**
503 )))
504
505 (((
506 486.3 - SF7BW125 to SF12BW125
507 )))
508
509 (((
510 486.5 - SF7BW125 to SF12BW125
511 )))
512
513 (((
514 486.7 - SF7BW125 to SF12BW125
515 )))
516
517 (((
518 486.9 - SF7BW125 to SF12BW125
519 )))
520
521 (((
522 487.1 - SF7BW125 to SF12BW125
523 )))
524
525 (((
526 487.3 - SF7BW125 to SF12BW125
527 )))
528
529 (((
530 487.5 - SF7BW125 to SF12BW125
531 )))
532
533 (((
534 487.7 - SF7BW125 to SF12BW125
535 )))
536
537 (((
538
539 )))
540
541 (((
542 (% style="color:blue" %)**Downlink:**
543 )))
544
545 (((
546 506.7 - SF7BW125 to SF12BW125
547 )))
548
549 (((
550 506.9 - SF7BW125 to SF12BW125
551 )))
552
553 (((
554 507.1 - SF7BW125 to SF12BW125
555 )))
556
557 (((
558 507.3 - SF7BW125 to SF12BW125
559 )))
560
561 (((
562 507.5 - SF7BW125 to SF12BW125
563 )))
564
565 (((
566 507.7 - SF7BW125 to SF12BW125
567 )))
568
569 (((
570 507.9 - SF7BW125 to SF12BW125
571 )))
572
573 (((
574 508.1 - SF7BW125 to SF12BW125
575 )))
576
577 (((
578 505.3 - SF12BW125 (RX2 downlink only)
579 )))
580
581
582
583 === 2.6.4  AU915-928(AU915) ===
584
585 (((
586 Default use CHE=2
587
588 (% style="color:blue" %)**Uplink:**
589
590 916.8 - SF7BW125 to SF12BW125
591
592 917.0 - SF7BW125 to SF12BW125
593
594 917.2 - SF7BW125 to SF12BW125
595
596 917.4 - SF7BW125 to SF12BW125
597
598 917.6 - SF7BW125 to SF12BW125
599
600 917.8 - SF7BW125 to SF12BW125
601
602 918.0 - SF7BW125 to SF12BW125
603
604 918.2 - SF7BW125 to SF12BW125
605
606
607 (% style="color:blue" %)**Downlink:**
608
609 923.3 - SF7BW500 to SF12BW500
610
611 923.9 - SF7BW500 to SF12BW500
612
613 924.5 - SF7BW500 to SF12BW500
614
615 925.1 - SF7BW500 to SF12BW500
616
617 925.7 - SF7BW500 to SF12BW500
618
619 926.3 - SF7BW500 to SF12BW500
620
621 926.9 - SF7BW500 to SF12BW500
622
623 927.5 - SF7BW500 to SF12BW500
624
625 923.3 - SF12BW500(RX2 downlink only)
626
627
628
629 )))
630
631 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
632
633 (((
634 (% style="color:blue" %)**Default Uplink channel:**
635 )))
636
637 (((
638 923.2 - SF7BW125 to SF10BW125
639 )))
640
641 (((
642 923.4 - SF7BW125 to SF10BW125
643 )))
644
645 (((
646
647 )))
648
649 (((
650 (% style="color:blue" %)**Additional Uplink Channel**:
651 )))
652
653 (((
654 (OTAA mode, channel added by JoinAccept message)
655 )))
656
657 (((
658
659 )))
660
661 (((
662 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
663 )))
664
665 (((
666 922.2 - SF7BW125 to SF10BW125
667 )))
668
669 (((
670 922.4 - SF7BW125 to SF10BW125
671 )))
672
673 (((
674 922.6 - SF7BW125 to SF10BW125
675 )))
676
677 (((
678 922.8 - SF7BW125 to SF10BW125
679 )))
680
681 (((
682 923.0 - SF7BW125 to SF10BW125
683 )))
684
685 (((
686 922.0 - SF7BW125 to SF10BW125
687 )))
688
689 (((
690
691 )))
692
693 (((
694 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
695 )))
696
697 (((
698 923.6 - SF7BW125 to SF10BW125
699 )))
700
701 (((
702 923.8 - SF7BW125 to SF10BW125
703 )))
704
705 (((
706 924.0 - SF7BW125 to SF10BW125
707 )))
708
709 (((
710 924.2 - SF7BW125 to SF10BW125
711 )))
712
713 (((
714 924.4 - SF7BW125 to SF10BW125
715 )))
716
717 (((
718 924.6 - SF7BW125 to SF10BW125
719 )))
720
721 (((
722
723 )))
724
725 (((
726 (% style="color:blue" %)**Downlink:**
727 )))
728
729 (((
730 Uplink channels 1-8 (RX1)
731 )))
732
733 (((
734 923.2 - SF10BW125 (RX2)
735 )))
736
737
738
739 === 2.6.6  KR920-923 (KR920) ===
740
741 (((
742 (% style="color:blue" %)**Default channel:**
743 )))
744
745 (((
746 922.1 - SF7BW125 to SF12BW125
747 )))
748
749 (((
750 922.3 - SF7BW125 to SF12BW125
751 )))
752
753 (((
754 922.5 - SF7BW125 to SF12BW125
755 )))
756
757 (((
758
759 )))
760
761 (((
762 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
763 )))
764
765 (((
766 922.1 - SF7BW125 to SF12BW125
767 )))
768
769 (((
770 922.3 - SF7BW125 to SF12BW125
771 )))
772
773 (((
774 922.5 - SF7BW125 to SF12BW125
775 )))
776
777 (((
778 922.7 - SF7BW125 to SF12BW125
779 )))
780
781 (((
782 922.9 - SF7BW125 to SF12BW125
783 )))
784
785 (((
786 923.1 - SF7BW125 to SF12BW125
787 )))
788
789 (((
790 923.3 - SF7BW125 to SF12BW125
791 )))
792
793 (((
794
795 )))
796
797 (((
798 (% style="color:blue" %)**Downlink:**
799 )))
800
801 (((
802 Uplink channels 1-7(RX1)
803 )))
804
805 (((
806 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
807 )))
808
809
810
811 === 2.6.7  IN865-867 (IN865) ===
812
813 (((
814 (% style="color:blue" %)**Uplink:**
815 )))
816
817 (((
818 865.0625 - SF7BW125 to SF12BW125
819 )))
820
821 (((
822 865.4025 - SF7BW125 to SF12BW125
823 )))
824
825 (((
826 865.9850 - SF7BW125 to SF12BW125
827 )))
828
829 (((
830
831 )))
832
833 (((
834 (% style="color:blue" %)**Downlink:**
835 )))
836
837 (((
838 Uplink channels 1-3 (RX1)
839 )))
840
841 (((
842 866.550 - SF10BW125 (RX2)
843 )))
844
845
846
847 == 2.7  LED Indicator ==
848
849 The LDDS75 has an internal LED which is to show the status of different state.
850
851
852 * Blink once when device power on.
853 * The device detects the sensor and flashes 5 times.
854 * Solid ON for 5 seconds once device successful Join the network.
855 * Blink once when device transmit a packet.
856
857
858
859 == 2.8  ​Firmware Change Log ==
860
861
862 (((
863 **Firmware download link: **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]
864 )))
865
866 (((
867
868 )))
869
870 (((
871 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
872 )))
873
874
875
876 == 2.9  Mechanical ==
877
878
879 [[image:image-20220610172003-1.png]]
880
881
882 [[image:image-20220610172003-2.png]]
883
884
885
886 == 2.10  Battery Analysis ==
887
888 === 2.10.1  Battery Type ===
889
890 The LDDS75 battery is a combination of a 4000mAh or 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is non-rechargeable battery type with a low discharge rate (<2% per year). This type of battery is commonly used in IoT devices such as water meter.
891
892
893 The battery related documents as below:
894
895 * (((
896 [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
897 )))
898 * (((
899 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
900 )))
901 * (((
902 [[Lithium-ion Battery-Capacitor datasheet>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC_1520_datasheet.jpg]], [[Tech Spec>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC1520%20Technical%20Specification20171123.pdf]]
903 )))
904
905 [[image:image-20220610172400-3.png]]
906
907
908
909 === 2.10.2  Replace the battery ===
910
911 (((
912 You can change the battery in the LDDS75.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won't be voltage drop between battery and main board.
913 )))
914
915 (((
916
917 )))
918
919 (((
920 The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can't find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
921 )))
922
923
924
925 = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
926
927 (((
928 (((
929 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
930 )))
931 )))
932
933 * (((
934 (((
935 AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
936 )))
937 )))
938 * (((
939 (((
940 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
941 )))
942 )))
943
944 (((
945 (((
946
947 )))
948
949 (((
950 There are two kinds of commands to configure LDDS75, they are:
951 )))
952 )))
953
954 * (((
955 (((
956 (% style="color:#4f81bd" %)** General Commands**.
957 )))
958 )))
959
960 (((
961 (((
962 These commands are to configure:
963 )))
964 )))
965
966 * (((
967 (((
968 General system settings like: uplink interval.
969 )))
970 )))
971 * (((
972 (((
973 LoRaWAN protocol & radio related command.
974 )))
975 )))
976
977 (((
978 (((
979 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]]
980 )))
981 )))
982
983 (((
984 (((
985
986 )))
987 )))
988
989 * (((
990 (((
991 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
992 )))
993 )))
994
995 (((
996 (((
997 These commands only valid for LDDS75, as below:
998 )))
999 )))
1000
1001
1002
1003 == 3.1  Access AT Commands ==
1004
1005 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.
1006
1007 [[image:image-20220610172924-4.png||height="483" width="988"]]
1008
1009
1010 Or if you have below board, use below connection:
1011
1012
1013 [[image:image-20220610172924-5.png]]
1014
1015
1016 (((
1017 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:
1018 )))
1019
1020
1021 [[image:image-20220610172924-6.png||height="601" width="860"]]
1022
1023
1024
1025 == 3.2  Set Transmit Interval Time ==
1026
1027 Feature: Change LoRaWAN End Node Transmit Interval.
1028
1029 (% style="color:#037691" %)**AT Command: AT+TDC**
1030
1031 [[image:image-20220610173409-7.png]]
1032
1033
1034 (((
1035 (% style="color:#037691" %)**Downlink Command: 0x01**
1036 )))
1037
1038 (((
1039 (((
1040 Format: Command Code (0x01) followed by 3 bytes time value.
1041
1042 (((
1043 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1044 )))
1045
1046 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1047 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1048 )))
1049 )))
1050
1051
1052
1053
1054
1055 == 3.3  Set Interrupt Mode ==
1056
1057 Feature, Set Interrupt mode for GPIO_EXIT.
1058
1059 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1060
1061 [[image:image-20220610174917-9.png]]
1062
1063
1064 (% style="color:#037691" %)**Downlink Command: 0x06**
1065
1066 Format: Command Code (0x06) followed by 3 bytes.
1067
1068 (((
1069 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1070 )))
1071
1072 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1073 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1074
1075
1076
1077 = 4.  FAQ =
1078
1079 == 4.1  What is the frequency plan for LDDS75? ==
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
1085 == 4.2  How to change the LoRa Frequency Bands/Region ==
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
1092 == 4.3  Can I use LDDS75 in condensation environment? ==
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
1098 = 5.  Trouble Shooting =
1099
1100 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
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 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.
1108
1109 (((
1110
1111 )))
1112
1113
1114 = 6.  Order Info =
1115
1116
1117 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1118
1119
1120 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1121
1122 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1123 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1124 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1125 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1126 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1127 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1128 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1129 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1130
1131 (% style="color:blue" %)**YY**(%%): Battery Option
1132
1133 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1134 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1135
1136
1137
1138 = 7. ​ Packing Info =
1139
1140
1141 **Package Includes**:
1142
1143 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1144
1145 **Dimension and weight**:
1146
1147 * Device Size: cm
1148 * Device Weight: g
1149 * Package Size / pcs : cm
1150 * Weight / pcs : g
1151
1152
1153
1154 = 8.  ​Support =
1155
1156 * 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.
1157 * 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]].

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