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Version 151.2 by Xiaoling on 2022/06/11 09:30
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1 (% style="text-align:center" %)
2 [[image:1654846127817-788.png]]
3
4 **Contents:**
5
6 {{toc/}}
7
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12
13
14
15 = 1.  Introduction =
16
17 == 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
18
19 (((
20
21
22 (((
23 (((
24 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.
25 )))
26
27 (((
28
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
37 )))
38
39 (((
40 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.
41 )))
42
43 (((
44
45 )))
46
47 (((
48 LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
49 )))
50
51 (((
52
53 )))
54
55 (((
56 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.
57 )))
58
59 (((
60
61 )))
62
63 (((
64 (% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
65 )))
66 )))
67 )))
68
69
70 [[image:1654847051249-359.png]]
71
72
73
74 == ​1.2  Features ==
75
76 * LoRaWAN 1.0.3 Class A
77 * Ultra low power consumption
78 * Distance Detection by Ultrasonic technology
79 * Flat object range 280mm - 7500mm
80 * Accuracy: ±(1cm+S*0.3%) (S: Distance)
81 * Cable Length : 25cm
82 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
83 * AT Commands to change parameters
84 * Uplink on periodically
85 * Downlink to change configure
86 * IP66 Waterproof Enclosure
87 * 4000mAh or 8500mAh Battery for long term use
88
89
90
91
92
93 == 1.3  Specification ==
94
95 === 1.3.1  Rated environmental conditions ===
96
97 [[image:image-20220610154839-1.png]]
98
99 (((
100 **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)**
101 )))
102
103
104
105 === 1.3.2  Effective measurement range Reference beam pattern ===
106
107 **(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
108
109
110
111 [[image:1654852253176-749.png]]
112
113
114
115 (((
116 **(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.**
117 )))
118
119
120 [[image:1654852175653-550.png]](% style="display:none" %) ** **
121
122
123
124 == 1.5 ​ Applications ==
125
126 * Horizontal distance measurement
127 * Liquid level measurement
128 * Parking management system
129 * Object proximity and presence detection
130 * Intelligent trash can management system
131 * Robot obstacle avoidance
132 * Automatic control
133 * Sewer
134 * Bottom water level monitoring
135
136 == 1.6  Pin mapping and power on ==
137
138
139 [[image:1654847583902-256.png]]
140
141
142
143 = 2.  Configure LDDS75 to connect to LoRaWAN network =
144
145 == 2.1  How it works ==
146
147 (((
148 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
149 )))
150
151 (((
152 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.
153 )))
154
155
156
157 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
158
159 (((
160 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.
161 )))
162
163 (((
164 [[image:1654848616367-242.png]]
165 )))
166
167 (((
168 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.
169 )))
170
171 (((
172 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
173 )))
174
175 (((
176 Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
177 )))
178
179 [[image:image-20220607170145-1.jpeg]]
180
181
182 (((
183 For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
184 )))
185
186 (((
187 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
188 )))
189
190 (((
191 **Add APP EUI in the application**
192 )))
193
194 [[image:image-20220610161353-4.png]]
195
196 [[image:image-20220610161353-5.png]]
197
198 [[image:image-20220610161353-6.png]]
199
200
201 [[image:image-20220610161353-7.png]]
202
203
204 You can also choose to create the device manually.
205
206 [[image:image-20220610161538-8.png]]
207
208
209
210 **Add APP KEY and DEV EUI**
211
212 [[image:image-20220610161538-9.png]]
213
214
215
216 (% style="color:blue" %)**Step 2**(%%): Power on LDDS75
217
218
219 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
220
221 [[image:image-20220610161724-10.png]]
222
223
224 (((
225 (% 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.
226 )))
227
228 [[image:1654849068701-275.png]]
229
230
231
232 == 2.3  ​Uplink Payload ==
233
234 (((
235 (((
236 LDDS75 will uplink payload via LoRaWAN with below payload format: 
237 )))
238
239 (((
240 Uplink payload includes in total 4 bytes.
241 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
242 )))
243 )))
244
245 (((
246
247 )))
248
249 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
250 |=(% style="width: 62.5px;" %)(((
251 **Size (bytes)**
252 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
253 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
254 [[Distance>>||anchor="H2.3.2A0Distance"]]
255
256 (unit: mm)
257 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
258 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
259 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
260
261 [[image:1654850511545-399.png]]
262
263
264
265 === 2.3.1  Battery Info ===
266
267
268 Check the battery voltage for LDDS75.
269
270 Ex1: 0x0B45 = 2885mV
271
272 Ex2: 0x0B49 = 2889mV
273
274
275
276 === 2.3.2  Distance ===
277
278 (((
279 Get the distance. Flat object range 280mm - 7500mm.
280 )))
281
282 (((
283 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.**
284 )))
285
286
287 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
288 * 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.
289
290 === 2.3.3  Interrupt Pin ===
291
292 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.
293
294 **Example:**
295
296 0x00: Normal uplink packet.
297
298 0x01: Interrupt Uplink Packet.
299
300
301
302 === 2.3.4  DS18B20 Temperature sensor ===
303
304 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
305
306 **Example**:
307
308 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
309
310 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
311
312 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
313
314
315
316 === 2.3.5  Sensor Flag ===
317
318 (((
319 0x01: Detect Ultrasonic Sensor
320 )))
321
322 (((
323 0x00: No Ultrasonic Sensor
324 )))
325
326
327
328 === 2.3.6  Decode payload in The Things Network ===
329
330 While using TTN network, you can add the payload format to decode the payload.
331
332
333 [[image:1654850829385-439.png]]
334
335 The payload decoder function for TTN V3 is here:
336
337 (((
338 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/]]
339 )))
340
341
342
343 == 2.4  Uplink Interval ==
344
345 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"]]
346
347
348
349 == 2.5  ​Show Data in DataCake IoT Server ==
350
351 (((
352 [[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:
353 )))
354
355 (((
356
357 )))
358
359 (((
360 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
361 )))
362
363 (((
364 (% 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:**
365 )))
366
367
368 [[image:1654592790040-760.png]]
369
370
371 [[image:1654592800389-571.png]]
372
373
374 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
375
376 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
377
378 [[image:1654851029373-510.png]]
379
380
381 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
382
383 [[image:image-20220610165129-11.png||height="595" width="1088"]]
384
385
386
387 == 2.6  Frequency Plans ==
388
389 (((
390 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.
391 )))
392
393
394
395 === 2.6.1  EU863-870 (EU868) ===
396
397 (((
398 (% style="color:blue" %)**Uplink:**
399 )))
400
401 (((
402 868.1 - SF7BW125 to SF12BW125
403 )))
404
405 (((
406 868.3 - SF7BW125 to SF12BW125 and SF7BW250
407 )))
408
409 (((
410 868.5 - SF7BW125 to SF12BW125
411 )))
412
413 (((
414 867.1 - SF7BW125 to SF12BW125
415 )))
416
417 (((
418 867.3 - SF7BW125 to SF12BW125
419 )))
420
421 (((
422 867.5 - SF7BW125 to SF12BW125
423 )))
424
425 (((
426 867.7 - SF7BW125 to SF12BW125
427 )))
428
429 (((
430 867.9 - SF7BW125 to SF12BW125
431 )))
432
433 (((
434 868.8 - FSK
435 )))
436
437 (((
438
439 )))
440
441 (((
442 (% style="color:blue" %)**Downlink:**
443 )))
444
445 (((
446 Uplink channels 1-9 (RX1)
447 )))
448
449 (((
450 869.525 - SF9BW125 (RX2 downlink only)
451 )))
452
453
454
455 === 2.6.2  US902-928(US915) ===
456
457 (((
458 Used in USA, Canada and South America. Default use CHE=2
459
460 (% style="color:blue" %)**Uplink:**
461
462 903.9 - SF7BW125 to SF10BW125
463
464 904.1 - SF7BW125 to SF10BW125
465
466 904.3 - SF7BW125 to SF10BW125
467
468 904.5 - SF7BW125 to SF10BW125
469
470 904.7 - SF7BW125 to SF10BW125
471
472 904.9 - SF7BW125 to SF10BW125
473
474 905.1 - SF7BW125 to SF10BW125
475
476 905.3 - SF7BW125 to SF10BW125
477
478
479 (% style="color:blue" %)**Downlink:**
480
481 923.3 - SF7BW500 to SF12BW500
482
483 923.9 - SF7BW500 to SF12BW500
484
485 924.5 - SF7BW500 to SF12BW500
486
487 925.1 - SF7BW500 to SF12BW500
488
489 925.7 - SF7BW500 to SF12BW500
490
491 926.3 - SF7BW500 to SF12BW500
492
493 926.9 - SF7BW500 to SF12BW500
494
495 927.5 - SF7BW500 to SF12BW500
496
497 923.3 - SF12BW500(RX2 downlink only)
498
499
500
501 )))
502
503 === 2.6.3  CN470-510 (CN470) ===
504
505 (((
506 Used in China, Default use CHE=1
507 )))
508
509 (((
510 (% style="color:blue" %)**Uplink:**
511 )))
512
513 (((
514 486.3 - SF7BW125 to SF12BW125
515 )))
516
517 (((
518 486.5 - SF7BW125 to SF12BW125
519 )))
520
521 (((
522 486.7 - SF7BW125 to SF12BW125
523 )))
524
525 (((
526 486.9 - SF7BW125 to SF12BW125
527 )))
528
529 (((
530 487.1 - SF7BW125 to SF12BW125
531 )))
532
533 (((
534 487.3 - SF7BW125 to SF12BW125
535 )))
536
537 (((
538 487.5 - SF7BW125 to SF12BW125
539 )))
540
541 (((
542 487.7 - SF7BW125 to SF12BW125
543 )))
544
545 (((
546
547 )))
548
549 (((
550 (% style="color:blue" %)**Downlink:**
551 )))
552
553 (((
554 506.7 - SF7BW125 to SF12BW125
555 )))
556
557 (((
558 506.9 - SF7BW125 to SF12BW125
559 )))
560
561 (((
562 507.1 - SF7BW125 to SF12BW125
563 )))
564
565 (((
566 507.3 - SF7BW125 to SF12BW125
567 )))
568
569 (((
570 507.5 - SF7BW125 to SF12BW125
571 )))
572
573 (((
574 507.7 - SF7BW125 to SF12BW125
575 )))
576
577 (((
578 507.9 - SF7BW125 to SF12BW125
579 )))
580
581 (((
582 508.1 - SF7BW125 to SF12BW125
583 )))
584
585 (((
586 505.3 - SF12BW125 (RX2 downlink only)
587 )))
588
589
590
591 === 2.6.4  AU915-928(AU915) ===
592
593 (((
594 Default use CHE=2
595
596 (% style="color:blue" %)**Uplink:**
597
598 916.8 - SF7BW125 to SF12BW125
599
600 917.0 - SF7BW125 to SF12BW125
601
602 917.2 - SF7BW125 to SF12BW125
603
604 917.4 - SF7BW125 to SF12BW125
605
606 917.6 - SF7BW125 to SF12BW125
607
608 917.8 - SF7BW125 to SF12BW125
609
610 918.0 - SF7BW125 to SF12BW125
611
612 918.2 - SF7BW125 to SF12BW125
613
614
615 (% style="color:blue" %)**Downlink:**
616
617 923.3 - SF7BW500 to SF12BW500
618
619 923.9 - SF7BW500 to SF12BW500
620
621 924.5 - SF7BW500 to SF12BW500
622
623 925.1 - SF7BW500 to SF12BW500
624
625 925.7 - SF7BW500 to SF12BW500
626
627 926.3 - SF7BW500 to SF12BW500
628
629 926.9 - SF7BW500 to SF12BW500
630
631 927.5 - SF7BW500 to SF12BW500
632
633 923.3 - SF12BW500(RX2 downlink only)
634
635
636
637 )))
638
639 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
640
641 (((
642 (% style="color:blue" %)**Default Uplink channel:**
643 )))
644
645 (((
646 923.2 - SF7BW125 to SF10BW125
647 )))
648
649 (((
650 923.4 - SF7BW125 to SF10BW125
651 )))
652
653 (((
654
655 )))
656
657 (((
658 (% style="color:blue" %)**Additional Uplink Channel**:
659 )))
660
661 (((
662 (OTAA mode, channel added by JoinAccept message)
663 )))
664
665 (((
666
667 )))
668
669 (((
670 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
671 )))
672
673 (((
674 922.2 - SF7BW125 to SF10BW125
675 )))
676
677 (((
678 922.4 - SF7BW125 to SF10BW125
679 )))
680
681 (((
682 922.6 - SF7BW125 to SF10BW125
683 )))
684
685 (((
686 922.8 - SF7BW125 to SF10BW125
687 )))
688
689 (((
690 923.0 - SF7BW125 to SF10BW125
691 )))
692
693 (((
694 922.0 - SF7BW125 to SF10BW125
695 )))
696
697 (((
698
699 )))
700
701 (((
702 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
703 )))
704
705 (((
706 923.6 - SF7BW125 to SF10BW125
707 )))
708
709 (((
710 923.8 - SF7BW125 to SF10BW125
711 )))
712
713 (((
714 924.0 - SF7BW125 to SF10BW125
715 )))
716
717 (((
718 924.2 - SF7BW125 to SF10BW125
719 )))
720
721 (((
722 924.4 - SF7BW125 to SF10BW125
723 )))
724
725 (((
726 924.6 - SF7BW125 to SF10BW125
727 )))
728
729 (((
730
731 )))
732
733 (((
734 (% style="color:blue" %)**Downlink:**
735 )))
736
737 (((
738 Uplink channels 1-8 (RX1)
739 )))
740
741 (((
742 923.2 - SF10BW125 (RX2)
743 )))
744
745
746
747 === 2.6.6  KR920-923 (KR920) ===
748
749 (((
750 (% style="color:blue" %)**Default channel:**
751 )))
752
753 (((
754 922.1 - SF7BW125 to SF12BW125
755 )))
756
757 (((
758 922.3 - SF7BW125 to SF12BW125
759 )))
760
761 (((
762 922.5 - SF7BW125 to SF12BW125
763 )))
764
765 (((
766
767 )))
768
769 (((
770 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
771 )))
772
773 (((
774 922.1 - SF7BW125 to SF12BW125
775 )))
776
777 (((
778 922.3 - SF7BW125 to SF12BW125
779 )))
780
781 (((
782 922.5 - SF7BW125 to SF12BW125
783 )))
784
785 (((
786 922.7 - SF7BW125 to SF12BW125
787 )))
788
789 (((
790 922.9 - SF7BW125 to SF12BW125
791 )))
792
793 (((
794 923.1 - SF7BW125 to SF12BW125
795 )))
796
797 (((
798 923.3 - SF7BW125 to SF12BW125
799 )))
800
801 (((
802
803 )))
804
805 (((
806 (% style="color:blue" %)**Downlink:**
807 )))
808
809 (((
810 Uplink channels 1-7(RX1)
811 )))
812
813 (((
814 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
815 )))
816
817
818
819 === 2.6.7  IN865-867 (IN865) ===
820
821 (((
822 (% style="color:blue" %)**Uplink:**
823 )))
824
825 (((
826 865.0625 - SF7BW125 to SF12BW125
827 )))
828
829 (((
830 865.4025 - SF7BW125 to SF12BW125
831 )))
832
833 (((
834 865.9850 - SF7BW125 to SF12BW125
835 )))
836
837 (((
838
839 )))
840
841 (((
842 (% style="color:blue" %)**Downlink:**
843 )))
844
845 (((
846 Uplink channels 1-3 (RX1)
847 )))
848
849 (((
850 866.550 - SF10BW125 (RX2)
851 )))
852
853
854
855 == 2.7  LED Indicator ==
856
857 The LDDS75 has an internal LED which is to show the status of different state.
858
859
860 * Blink once when device power on.
861 * The device detects the sensor and flashes 5 times.
862 * Solid ON for 5 seconds once device successful Join the network.
863 * Blink once when device transmit a packet.
864
865 == 2.8  ​Firmware Change Log ==
866
867
868 (((
869 **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/]]
870 )))
871
872 (((
873
874 )))
875
876 (((
877 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
878 )))
879
880
881
882 == 2.9  Mechanical ==
883
884
885 [[image:image-20220610172003-1.png]]
886
887
888 [[image:image-20220610172003-2.png]]
889
890
891
892 == 2.10  Battery Analysis ==
893
894 === 2.10.1  Battery Type ===
895
896 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.
897
898
899 The battery related documents as below:
900
901 * (((
902 [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
903 )))
904 * (((
905 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
906 )))
907 * (((
908 [[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]]
909 )))
910
911 [[image:image-20220610172400-3.png]]
912
913
914
915 === 2.10.2  Replace the battery ===
916
917 (((
918 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.
919 )))
920
921 (((
922
923 )))
924
925 (((
926 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)
927 )))
928
929
930
931 = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
932
933 (((
934 (((
935 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
936 )))
937 )))
938
939 * (((
940 (((
941 AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
942 )))
943 )))
944 * (((
945 (((
946 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
947 )))
948 )))
949
950 (((
951 (((
952
953 )))
954
955 (((
956 There are two kinds of commands to configure LDDS75, they are:
957 )))
958 )))
959
960 * (((
961 (((
962 (% style="color:#4f81bd" %)** General Commands**.
963 )))
964 )))
965
966 (((
967 (((
968 These commands are to configure:
969 )))
970 )))
971
972 * (((
973 (((
974 General system settings like: uplink interval.
975 )))
976 )))
977 * (((
978 (((
979 LoRaWAN protocol & radio related command.
980 )))
981 )))
982
983 (((
984 (((
985 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]]
986 )))
987 )))
988
989 (((
990 (((
991
992 )))
993 )))
994
995 * (((
996 (((
997 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
998 )))
999 )))
1000
1001 (((
1002 (((
1003 These commands only valid for LDDS75, as below:
1004 )))
1005 )))
1006
1007
1008
1009 == 3.1  Access AT Commands ==
1010
1011 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.
1012
1013 [[image:image-20220610172924-4.png||height="483" width="988"]]
1014
1015
1016 Or if you have below board, use below connection:
1017
1018
1019 [[image:image-20220610172924-5.png]]
1020
1021
1022 (((
1023 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:
1024 )))
1025
1026
1027 [[image:image-20220610172924-6.png||height="601" width="860"]]
1028
1029
1030
1031 == 3.2  Set Transmit Interval Time ==
1032
1033 Feature: Change LoRaWAN End Node Transmit Interval.
1034
1035 (% style="color:#037691" %)**AT Command: AT+TDC**
1036
1037 [[image:image-20220610173409-7.png]]
1038
1039
1040 (((
1041 (% style="color:#037691" %)**Downlink Command: 0x01**
1042 )))
1043
1044 (((
1045 (((
1046 Format: Command Code (0x01) followed by 3 bytes time value.
1047
1048 (((
1049 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1050 )))
1051
1052 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1053 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1054 )))
1055
1056
1057
1058 )))
1059
1060 == 3.3  Set Interrupt Mode ==
1061
1062 Feature, Set Interrupt mode for GPIO_EXIT.
1063
1064 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1065
1066 [[image:image-20220610174917-9.png]]
1067
1068
1069 (% style="color:#037691" %)**Downlink Command: 0x06**
1070
1071 Format: Command Code (0x06) followed by 3 bytes.
1072
1073 (((
1074 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1075 )))
1076
1077 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1078 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1079
1080
1081 = 4.  FAQ =
1082
1083 == 4.1  What is the frequency plan for LDDS75? ==
1084
1085 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"]]
1086
1087
1088
1089 == 4.2  How to change the LoRa Frequency Bands/Region ==
1090
1091 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1092 When downloading the images, choose the required image file for download. ​
1093
1094
1095
1096 == 4.3  Can I use LDDS75 in condensation environment? ==
1097
1098 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1099
1100
1101
1102 = 5.  Trouble Shooting =
1103
1104 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1105
1106 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1107
1108
1109 == 5.2  AT Command input doesn't work ==
1110
1111 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.
1112
1113 (((
1114
1115 )))
1116
1117
1118 = 6.  Order Info =
1119
1120
1121 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1122
1123
1124 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1125
1126 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1127 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1128 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1129 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1130 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1131 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1132 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1133 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1134
1135 (% style="color:blue" %)**YY**(%%): Battery Option
1136
1137 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1138 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1139
1140
1141 = 7. ​ Packing Info =
1142
1143
1144 **Package Includes**:
1145
1146 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1147
1148 **Dimension and weight**:
1149
1150 * Device Size: cm
1151 * Device Weight: g
1152 * Package Size / pcs : cm
1153 * Weight / pcs : g
1154
1155
1156 = 8.  ​Support =
1157
1158 * 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.
1159 * 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]].