Version 152.2 by Xiaoling on 2022/06/14 17:17
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1 (% style="text-align:center" %)
2 [[image:1654846127817-788.png]]
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7
8 **Table of Contents:**
9
10 {{toc/}}
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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
33 )))
34
35 (((
36 It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
37 )))
38
39 (((
40
41 )))
42
43 (((
44 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.
45 )))
46
47 (((
48
49 )))
50
51 (((
52 LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
53 )))
54
55 (((
56
57 )))
58
59 (((
60 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.
61 )))
62
63 (((
64
65 )))
66
67 (((
68 (% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
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70 )))
71 )))
72
73
74 [[image:1654847051249-359.png]]
75
76
77
78 == ​1.2  Features ==
79
80 * LoRaWAN 1.0.3 Class A
81 * Ultra low power consumption
82 * Distance Detection by Ultrasonic technology
83 * Flat object range 280mm - 7500mm
84 * Accuracy: ±(1cm+S*0.3%) (S: Distance)
85 * Cable Length : 25cm
86 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
87 * AT Commands to change parameters
88 * Uplink on periodically
89 * Downlink to change configure
90 * IP66 Waterproof Enclosure
91 * 4000mAh or 8500mAh Battery for long term use
92
93
94
95 == 1.3  Specification ==
96
97 === 1.3.1  Rated environmental conditions ===
98
99 [[image:image-20220610154839-1.png]]
100
101 (((
102 **Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);  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)**
103 )))
104
105
106
107 === 1.3.2  Effective measurement range Reference beam pattern ===
108
109 **(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
110
111
112
113 [[image:1654852253176-749.png]]
114
115
116
117 (((
118 **(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.**
119 )))
120
121
122 [[image:1654852175653-550.png]](% style="display:none" %) ** **
123
124
125
126 == 1.5 ​ Applications ==
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
139
140 == 1.6  Pin mapping and power on ==
141
142
143 [[image:1654847583902-256.png]]
144
145
146
147 = 2.  Configure LDDS75 to connect to LoRaWAN network =
148
149 == 2.1  How it works ==
150
151 (((
152 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
153 )))
154
155 (((
156 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.
157 )))
158
159
160
161 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
162
163 (((
164 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.
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166
167 (((
168 [[image:1654848616367-242.png]]
169 )))
170
171 (((
172 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.
173 )))
174
175 (((
176 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
177 )))
178
179 (((
180 Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
181 )))
182
183 [[image:image-20220607170145-1.jpeg]]
184
185
186 (((
187 For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
188 )))
189
190 (((
191 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
192 )))
193
194 (((
195 **Add APP EUI in the application**
196 )))
197
198 [[image:image-20220610161353-4.png]]
199
200 [[image:image-20220610161353-5.png]]
201
202 [[image:image-20220610161353-6.png]]
203
204
205 [[image:image-20220610161353-7.png]]
206
207
208 You can also choose to create the device manually.
209
210 [[image:image-20220610161538-8.png]]
211
212
213
214 **Add APP KEY and DEV EUI**
215
216 [[image:image-20220610161538-9.png]]
217
218
219
220 (% style="color:blue" %)**Step 2**(%%): Power on LDDS75
221
222
223 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
224
225 [[image:image-20220610161724-10.png]]
226
227
228 (((
229 (% 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.
230 )))
231
232 [[image:1654849068701-275.png]]
233
234
235
236 == 2.3  ​Uplink Payload ==
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
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247 )))
248
249 (((
250
251 )))
252
253 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
254 |=(% style="width: 62.5px;" %)(((
255 **Size (bytes)**
256 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
257 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
258 [[Distance>>||anchor="H2.3.2A0Distance"]]
259
260 (unit: mm)
261 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
262 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
263 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
264
265 [[image:1654850511545-399.png]]
266
267
268
269 === 2.3.1  Battery Info ===
270
271
272 Check the battery voltage for LDDS75.
273
274 Ex1: 0x0B45 = 2885mV
275
276 Ex2: 0x0B49 = 2889mV
277
278
279
280 === 2.3.2  Distance ===
281
282 (((
283 Get the distance. Flat object range 280mm - 7500mm.
284 )))
285
286 (((
287 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.**
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
295
296 === 2.3.3  Interrupt Pin ===
297
298 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.
299
300 **Example:**
301
302 0x00: Normal uplink packet.
303
304 0x01: Interrupt Uplink Packet.
305
306
307
308 === 2.3.4  DS18B20 Temperature sensor ===
309
310 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
311
312 **Example**:
313
314 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
315
316 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
317
318 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
319
320
321
322 === 2.3.5  Sensor Flag ===
323
324 (((
325 0x01: Detect Ultrasonic Sensor
326 )))
327
328 (((
329 0x00: No Ultrasonic Sensor
330 )))
331
332
333
334 === 2.3.6  Decode payload in The Things Network ===
335
336 While using TTN network, you can add the payload format to decode the payload.
337
338
339 [[image:1654850829385-439.png]]
340
341 The payload decoder function for TTN V3 is here:
342
343 (((
344 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/]]
345 )))
346
347
348
349 == 2.4  Uplink Interval ==
350
351 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"]]
352
353
354
355 == 2.5  ​Show Data in DataCake IoT Server ==
356
357 (((
358 [[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:
359 )))
360
361 (((
362
363 )))
364
365 (((
366 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
367 )))
368
369 (((
370 (% 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:**
371 )))
372
373
374 [[image:1654592790040-760.png]]
375
376
377 [[image:1654592800389-571.png]]
378
379
380 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
381
382 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
383
384 [[image:1654851029373-510.png]]
385
386
387 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
388
389 [[image:image-20220610165129-11.png||height="595" width="1088"]]
390
391
392
393 == 2.6  Frequency Plans ==
394
395 (((
396 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.
397 )))
398
399
400
401 === 2.6.1  EU863-870 (EU868) ===
402
403 (((
404 (% style="color:blue" %)**Uplink:**
405 )))
406
407 (((
408 868.1 - SF7BW125 to SF12BW125
409 )))
410
411 (((
412 868.3 - SF7BW125 to SF12BW125 and SF7BW250
413 )))
414
415 (((
416 868.5 - SF7BW125 to SF12BW125
417 )))
418
419 (((
420 867.1 - SF7BW125 to SF12BW125
421 )))
422
423 (((
424 867.3 - SF7BW125 to SF12BW125
425 )))
426
427 (((
428 867.5 - SF7BW125 to SF12BW125
429 )))
430
431 (((
432 867.7 - SF7BW125 to SF12BW125
433 )))
434
435 (((
436 867.9 - SF7BW125 to SF12BW125
437 )))
438
439 (((
440 868.8 - FSK
441 )))
442
443 (((
444
445 )))
446
447 (((
448 (% style="color:blue" %)**Downlink:**
449 )))
450
451 (((
452 Uplink channels 1-9 (RX1)
453 )))
454
455 (((
456 869.525 - SF9BW125 (RX2 downlink only)
457 )))
458
459
460
461 === 2.6.2  US902-928(US915) ===
462
463 (((
464 Used in USA, Canada and South America. Default use CHE=2
465
466 (% style="color:blue" %)**Uplink:**
467
468 903.9 - SF7BW125 to SF10BW125
469
470 904.1 - SF7BW125 to SF10BW125
471
472 904.3 - SF7BW125 to SF10BW125
473
474 904.5 - SF7BW125 to SF10BW125
475
476 904.7 - SF7BW125 to SF10BW125
477
478 904.9 - SF7BW125 to SF10BW125
479
480 905.1 - SF7BW125 to SF10BW125
481
482 905.3 - SF7BW125 to SF10BW125
483
484
485 (% style="color:blue" %)**Downlink:**
486
487 923.3 - SF7BW500 to SF12BW500
488
489 923.9 - SF7BW500 to SF12BW500
490
491 924.5 - SF7BW500 to SF12BW500
492
493 925.1 - SF7BW500 to SF12BW500
494
495 925.7 - SF7BW500 to SF12BW500
496
497 926.3 - SF7BW500 to SF12BW500
498
499 926.9 - SF7BW500 to SF12BW500
500
501 927.5 - SF7BW500 to SF12BW500
502
503 923.3 - SF12BW500(RX2 downlink only)
504
505
506
507 )))
508
509 === 2.6.3  CN470-510 (CN470) ===
510
511 (((
512 Used in China, Default use CHE=1
513 )))
514
515 (((
516 (% style="color:blue" %)**Uplink:**
517 )))
518
519 (((
520 486.3 - SF7BW125 to SF12BW125
521 )))
522
523 (((
524 486.5 - SF7BW125 to SF12BW125
525 )))
526
527 (((
528 486.7 - SF7BW125 to SF12BW125
529 )))
530
531 (((
532 486.9 - SF7BW125 to SF12BW125
533 )))
534
535 (((
536 487.1 - SF7BW125 to SF12BW125
537 )))
538
539 (((
540 487.3 - SF7BW125 to SF12BW125
541 )))
542
543 (((
544 487.5 - SF7BW125 to SF12BW125
545 )))
546
547 (((
548 487.7 - SF7BW125 to SF12BW125
549 )))
550
551 (((
552
553 )))
554
555 (((
556 (% style="color:blue" %)**Downlink:**
557 )))
558
559 (((
560 506.7 - SF7BW125 to SF12BW125
561 )))
562
563 (((
564 506.9 - SF7BW125 to SF12BW125
565 )))
566
567 (((
568 507.1 - SF7BW125 to SF12BW125
569 )))
570
571 (((
572 507.3 - SF7BW125 to SF12BW125
573 )))
574
575 (((
576 507.5 - SF7BW125 to SF12BW125
577 )))
578
579 (((
580 507.7 - SF7BW125 to SF12BW125
581 )))
582
583 (((
584 507.9 - SF7BW125 to SF12BW125
585 )))
586
587 (((
588 508.1 - SF7BW125 to SF12BW125
589 )))
590
591 (((
592 505.3 - SF12BW125 (RX2 downlink only)
593 )))
594
595
596
597 === 2.6.4  AU915-928(AU915) ===
598
599 (((
600 Default use CHE=2
601
602 (% style="color:blue" %)**Uplink:**
603
604 916.8 - SF7BW125 to SF12BW125
605
606 917.0 - SF7BW125 to SF12BW125
607
608 917.2 - SF7BW125 to SF12BW125
609
610 917.4 - SF7BW125 to SF12BW125
611
612 917.6 - SF7BW125 to SF12BW125
613
614 917.8 - SF7BW125 to SF12BW125
615
616 918.0 - SF7BW125 to SF12BW125
617
618 918.2 - SF7BW125 to SF12BW125
619
620
621 (% style="color:blue" %)**Downlink:**
622
623 923.3 - SF7BW500 to SF12BW500
624
625 923.9 - SF7BW500 to SF12BW500
626
627 924.5 - SF7BW500 to SF12BW500
628
629 925.1 - SF7BW500 to SF12BW500
630
631 925.7 - SF7BW500 to SF12BW500
632
633 926.3 - SF7BW500 to SF12BW500
634
635 926.9 - SF7BW500 to SF12BW500
636
637 927.5 - SF7BW500 to SF12BW500
638
639 923.3 - SF12BW500(RX2 downlink only)
640
641
642
643 )))
644
645 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
646
647 (((
648 (% style="color:blue" %)**Default Uplink channel:**
649 )))
650
651 (((
652 923.2 - SF7BW125 to SF10BW125
653 )))
654
655 (((
656 923.4 - SF7BW125 to SF10BW125
657 )))
658
659 (((
660
661 )))
662
663 (((
664 (% style="color:blue" %)**Additional Uplink Channel**:
665 )))
666
667 (((
668 (OTAA mode, channel added by JoinAccept message)
669 )))
670
671 (((
672
673 )))
674
675 (((
676 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
677 )))
678
679 (((
680 922.2 - SF7BW125 to SF10BW125
681 )))
682
683 (((
684 922.4 - SF7BW125 to SF10BW125
685 )))
686
687 (((
688 922.6 - SF7BW125 to SF10BW125
689 )))
690
691 (((
692 922.8 - SF7BW125 to SF10BW125
693 )))
694
695 (((
696 923.0 - SF7BW125 to SF10BW125
697 )))
698
699 (((
700 922.0 - SF7BW125 to SF10BW125
701 )))
702
703 (((
704
705 )))
706
707 (((
708 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
709 )))
710
711 (((
712 923.6 - SF7BW125 to SF10BW125
713 )))
714
715 (((
716 923.8 - SF7BW125 to SF10BW125
717 )))
718
719 (((
720 924.0 - SF7BW125 to SF10BW125
721 )))
722
723 (((
724 924.2 - SF7BW125 to SF10BW125
725 )))
726
727 (((
728 924.4 - SF7BW125 to SF10BW125
729 )))
730
731 (((
732 924.6 - SF7BW125 to SF10BW125
733 )))
734
735 (((
736
737 )))
738
739 (((
740 (% style="color:blue" %)**Downlink:**
741 )))
742
743 (((
744 Uplink channels 1-8 (RX1)
745 )))
746
747 (((
748 923.2 - SF10BW125 (RX2)
749 )))
750
751
752
753 === 2.6.6  KR920-923 (KR920) ===
754
755 (((
756 (% style="color:blue" %)**Default channel:**
757 )))
758
759 (((
760 922.1 - SF7BW125 to SF12BW125
761 )))
762
763 (((
764 922.3 - SF7BW125 to SF12BW125
765 )))
766
767 (((
768 922.5 - SF7BW125 to SF12BW125
769 )))
770
771 (((
772
773 )))
774
775 (((
776 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
777 )))
778
779 (((
780 922.1 - SF7BW125 to SF12BW125
781 )))
782
783 (((
784 922.3 - SF7BW125 to SF12BW125
785 )))
786
787 (((
788 922.5 - SF7BW125 to SF12BW125
789 )))
790
791 (((
792 922.7 - SF7BW125 to SF12BW125
793 )))
794
795 (((
796 922.9 - SF7BW125 to SF12BW125
797 )))
798
799 (((
800 923.1 - SF7BW125 to SF12BW125
801 )))
802
803 (((
804 923.3 - SF7BW125 to SF12BW125
805 )))
806
807 (((
808
809 )))
810
811 (((
812 (% style="color:blue" %)**Downlink:**
813 )))
814
815 (((
816 Uplink channels 1-7(RX1)
817 )))
818
819 (((
820 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
821 )))
822
823
824
825 === 2.6.7  IN865-867 (IN865) ===
826
827 (((
828 (% style="color:blue" %)**Uplink:**
829 )))
830
831 (((
832 865.0625 - SF7BW125 to SF12BW125
833 )))
834
835 (((
836 865.4025 - SF7BW125 to SF12BW125
837 )))
838
839 (((
840 865.9850 - SF7BW125 to SF12BW125
841 )))
842
843 (((
844
845 )))
846
847 (((
848 (% style="color:blue" %)**Downlink:**
849 )))
850
851 (((
852 Uplink channels 1-3 (RX1)
853 )))
854
855 (((
856 866.550 - SF10BW125 (RX2)
857 )))
858
859
860
861 == 2.7  LED Indicator ==
862
863 The LDDS75 has an internal LED which is to show the status of different state.
864
865
866 * Blink once when device power on.
867 * The device detects the sensor and flashes 5 times.
868 * Solid ON for 5 seconds once device successful Join the network.
869 * Blink once when device transmit a packet.
870
871
872
873 == 2.8  ​Firmware Change Log ==
874
875
876 (((
877 **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/]]
878 )))
879
880 (((
881
882 )))
883
884 (((
885 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
886 )))
887
888
889
890 == 2.9  Mechanical ==
891
892
893 [[image:image-20220610172003-1.png]]
894
895
896 [[image:image-20220610172003-2.png]]
897
898
899
900 == 2.10  Battery Analysis ==
901
902 === 2.10.1  Battery Type ===
903
904 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.
905
906
907 The battery related documents as below:
908
909 * (((
910 [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
911 )))
912 * (((
913 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
914 )))
915 * (((
916 [[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]]
917 )))
918
919 [[image:image-20220610172400-3.png]]
920
921
922
923 === 2.10.2  Replace the battery ===
924
925 (((
926 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.
927 )))
928
929 (((
930
931 )))
932
933 (((
934 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)
935 )))
936
937
938
939 = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
940
941 (((
942 (((
943 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
944 )))
945 )))
946
947 * (((
948 (((
949 AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
950 )))
951 )))
952 * (((
953 (((
954 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
955 )))
956 )))
957
958 (((
959 (((
960
961 )))
962
963 (((
964 There are two kinds of commands to configure LDDS75, they are:
965 )))
966 )))
967
968 * (((
969 (((
970 (% style="color:#4f81bd" %)** General Commands**.
971 )))
972 )))
973
974 (((
975 (((
976 These commands are to configure:
977 )))
978 )))
979
980 * (((
981 (((
982 General system settings like: uplink interval.
983 )))
984 )))
985 * (((
986 (((
987 LoRaWAN protocol & radio related command.
988 )))
989 )))
990
991 (((
992 (((
993 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]]
994 )))
995 )))
996
997 (((
998 (((
999
1000 )))
1001 )))
1002
1003 * (((
1004 (((
1005 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
1006 )))
1007 )))
1008
1009 (((
1010 (((
1011 These commands only valid for LDDS75, as below:
1012 )))
1013 )))
1014
1015
1016
1017 == 3.1  Access AT Commands ==
1018
1019 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.
1020
1021 [[image:image-20220610172924-4.png||height="483" width="988"]]
1022
1023
1024 Or if you have below board, use below connection:
1025
1026
1027 [[image:image-20220610172924-5.png]]
1028
1029
1030 (((
1031 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:
1032 )))
1033
1034
1035 [[image:image-20220610172924-6.png||height="601" width="860"]]
1036
1037
1038
1039 == 3.2  Set Transmit Interval Time ==
1040
1041 Feature: Change LoRaWAN End Node Transmit Interval.
1042
1043 (% style="color:#037691" %)**AT Command: AT+TDC**
1044
1045 [[image:image-20220610173409-7.png]]
1046
1047
1048 (((
1049 (% style="color:#037691" %)**Downlink Command: 0x01**
1050 )))
1051
1052 (((
1053 (((
1054 Format: Command Code (0x01) followed by 3 bytes time value.
1055
1056 (((
1057 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1058 )))
1059
1060 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1061 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1062 )))
1063 )))
1064
1065
1066
1067
1068
1069 == 3.3  Set Interrupt Mode ==
1070
1071 Feature, Set Interrupt mode for GPIO_EXIT.
1072
1073 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1074
1075 [[image:image-20220610174917-9.png]]
1076
1077
1078 (% style="color:#037691" %)**Downlink Command: 0x06**
1079
1080 Format: Command Code (0x06) followed by 3 bytes.
1081
1082 (((
1083 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1084 )))
1085
1086 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1087 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1088
1089
1090
1091 = 4.  FAQ =
1092
1093 == 4.1  What is the frequency plan for LDDS75? ==
1094
1095 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"]]
1096
1097
1098
1099 == 4.2  How to change the LoRa Frequency Bands/Region ==
1100
1101 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1102 When downloading the images, choose the required image file for download. ​
1103
1104
1105
1106 == 4.3  Can I use LDDS75 in condensation environment? ==
1107
1108 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1109
1110
1111
1112 = 5.  Trouble Shooting =
1113
1114 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1115
1116 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1117
1118
1119 == 5.2  AT Command input doesn't work ==
1120
1121 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.
1122
1123 (((
1124
1125 )))
1126
1127
1128 = 6.  Order Info =
1129
1130
1131 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1132
1133
1134 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1135
1136 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1137 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1138 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1139 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1140 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1141 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1142 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1143 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1144
1145 (% style="color:blue" %)**YY**(%%): Battery Option
1146
1147 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1148 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1149
1150
1151
1152 = 7. ​ Packing Info =
1153
1154
1155 **Package Includes**:
1156
1157 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1158
1159 **Dimension and weight**:
1160
1161 * Device Size: cm
1162 * Device Weight: g
1163 * Package Size / pcs : cm
1164 * Weight / pcs : g
1165
1166
1167
1168 = 8.  ​Support =
1169
1170 * 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.
1171 * 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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