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Version 150.51 by Xiaoling on 2022/06/11 09:19
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1 (% style="text-align:center" %)
2 [[image:1654846127817-788.png]]
3
4 **Contents:**
5
6 {{toc/}}
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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 == 1.3  Specification ==
90
91 === 1.3.1  Rated environmental conditions ===
92
93 [[image:image-20220610154839-1.png]]
94
95 (((
96 **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)**
97 )))
98
99
100
101 === 1.3.2  Effective measurement range Reference beam pattern ===
102
103 **(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
104
105
106
107 [[image:1654852253176-749.png]]
108
109
110
111 (((
112 **(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.**
113 )))
114
115
116 [[image:1654852175653-550.png]](% style="display:none" %) ** **
117
118
119
120 == 1.5 ​ Applications ==
121
122 * Horizontal distance measurement
123 * Liquid level measurement
124 * Parking management system
125 * Object proximity and presence detection
126 * Intelligent trash can management system
127 * Robot obstacle avoidance
128 * Automatic control
129 * Sewer
130 * Bottom water level monitoring
131
132
133 == 1.6  Pin mapping and power on ==
134
135
136 [[image:1654847583902-256.png]]
137
138
139
140 = 2.  Configure LDDS75 to connect to LoRaWAN network =
141
142 == 2.1  How it works ==
143
144 (((
145 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
146 )))
147
148 (((
149 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.
150 )))
151
152
153
154 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
155
156 (((
157 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.
158 )))
159
160 (((
161 [[image:1654848616367-242.png]]
162 )))
163
164 (((
165 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.
166 )))
167
168 (((
169 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
170 )))
171
172 (((
173 Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
174 )))
175
176 [[image:image-20220607170145-1.jpeg]]
177
178
179 (((
180 For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
181 )))
182
183 (((
184 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
185 )))
186
187 (((
188 **Add APP EUI in the application**
189 )))
190
191 [[image:image-20220610161353-4.png]]
192
193 [[image:image-20220610161353-5.png]]
194
195 [[image:image-20220610161353-6.png]]
196
197
198 [[image:image-20220610161353-7.png]]
199
200
201 You can also choose to create the device manually.
202
203 [[image:image-20220610161538-8.png]]
204
205
206
207 **Add APP KEY and DEV EUI**
208
209 [[image:image-20220610161538-9.png]]
210
211
212
213 (% style="color:blue" %)**Step 2**(%%): Power on LDDS75
214
215
216 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
217
218 [[image:image-20220610161724-10.png]]
219
220
221 (((
222 (% 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.
223 )))
224
225 [[image:1654849068701-275.png]]
226
227
228
229 == 2.3  ​Uplink Payload ==
230
231 (((
232 (((
233 LDDS75 will uplink payload via LoRaWAN with below payload format: 
234 )))
235
236 (((
237 Uplink payload includes in total 4 bytes.
238 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
239 )))
240 )))
241
242 (((
243
244 )))
245
246 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
247 |=(% style="width: 62.5px;" %)(((
248 **Size (bytes)**
249 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
250 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
251 [[Distance>>||anchor="H2.3.2A0Distance"]]
252
253 (unit: mm)
254 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
255 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
256 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
257
258 [[image:1654850511545-399.png]]
259
260
261
262 === 2.3.1  Battery Info ===
263
264
265 Check the battery voltage for LDDS75.
266
267 Ex1: 0x0B45 = 2885mV
268
269 Ex2: 0x0B49 = 2889mV
270
271
272
273 === 2.3.2  Distance ===
274
275 (((
276 Get the distance. Flat object range 280mm - 7500mm.
277 )))
278
279 (((
280 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.**
281 )))
282
283
284 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
285 * 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.
286
287
288
289 === 2.3.3  Interrupt Pin ===
290
291 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.
292
293 **Example:**
294
295 0x00: Normal uplink packet.
296
297 0x01: Interrupt Uplink Packet.
298
299
300
301 === 2.3.4  DS18B20 Temperature sensor ===
302
303 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
304
305 **Example**:
306
307 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
308
309 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
310
311 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
312
313
314
315 === 2.3.5  Sensor Flag ===
316
317 (((
318 0x01: Detect Ultrasonic Sensor
319 )))
320
321 (((
322 0x00: No Ultrasonic Sensor
323 )))
324
325
326
327 === 2.3.6  Decode payload in The Things Network ===
328
329 While using TTN network, you can add the payload format to decode the payload.
330
331
332 [[image:1654850829385-439.png]]
333
334 The payload decoder function for TTN V3 is here:
335
336 (((
337 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/]]
338 )))
339
340
341
342 == 2.4  Uplink Interval ==
343
344 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"]]
345
346
347
348 == 2.5  ​Show Data in DataCake IoT Server ==
349
350 (((
351 [[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:
352 )))
353
354 (((
355
356 )))
357
358 (((
359 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
360 )))
361
362 (((
363 (% 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:**
364 )))
365
366
367 [[image:1654592790040-760.png]]
368
369
370 [[image:1654592800389-571.png]]
371
372
373 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
374
375 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
376
377 [[image:1654851029373-510.png]]
378
379
380 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
381
382 [[image:image-20220610165129-11.png||height="595" width="1088"]]
383
384
385
386 == 2.6  Frequency Plans ==
387
388 (((
389 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.
390 )))
391
392
393
394 === 2.6.1  EU863-870 (EU868) ===
395
396 (((
397 (% style="color:blue" %)**Uplink:**
398 )))
399
400 (((
401 868.1 - SF7BW125 to SF12BW125
402 )))
403
404 (((
405 868.3 - SF7BW125 to SF12BW125 and SF7BW250
406 )))
407
408 (((
409 868.5 - SF7BW125 to SF12BW125
410 )))
411
412 (((
413 867.1 - SF7BW125 to SF12BW125
414 )))
415
416 (((
417 867.3 - SF7BW125 to SF12BW125
418 )))
419
420 (((
421 867.5 - SF7BW125 to SF12BW125
422 )))
423
424 (((
425 867.7 - SF7BW125 to SF12BW125
426 )))
427
428 (((
429 867.9 - SF7BW125 to SF12BW125
430 )))
431
432 (((
433 868.8 - FSK
434 )))
435
436 (((
437
438 )))
439
440 (((
441 (% style="color:blue" %)**Downlink:**
442 )))
443
444 (((
445 Uplink channels 1-9 (RX1)
446 )))
447
448 (((
449 869.525 - SF9BW125 (RX2 downlink only)
450 )))
451
452
453
454 === 2.6.2  US902-928(US915) ===
455
456 (((
457 Used in USA, Canada and South America. Default use CHE=2
458
459 (% style="color:blue" %)**Uplink:**
460
461 903.9 - SF7BW125 to SF10BW125
462
463 904.1 - SF7BW125 to SF10BW125
464
465 904.3 - SF7BW125 to SF10BW125
466
467 904.5 - SF7BW125 to SF10BW125
468
469 904.7 - SF7BW125 to SF10BW125
470
471 904.9 - SF7BW125 to SF10BW125
472
473 905.1 - SF7BW125 to SF10BW125
474
475 905.3 - SF7BW125 to SF10BW125
476
477
478 (% style="color:blue" %)**Downlink:**
479
480 923.3 - SF7BW500 to SF12BW500
481
482 923.9 - SF7BW500 to SF12BW500
483
484 924.5 - SF7BW500 to SF12BW500
485
486 925.1 - SF7BW500 to SF12BW500
487
488 925.7 - SF7BW500 to SF12BW500
489
490 926.3 - SF7BW500 to SF12BW500
491
492 926.9 - SF7BW500 to SF12BW500
493
494 927.5 - SF7BW500 to SF12BW500
495
496 923.3 - SF12BW500(RX2 downlink only)
497
498
499
500 )))
501
502 === 2.6.3  CN470-510 (CN470) ===
503
504 (((
505 Used in China, Default use CHE=1
506 )))
507
508 (((
509 (% style="color:blue" %)**Uplink:**
510 )))
511
512 (((
513 486.3 - SF7BW125 to SF12BW125
514 )))
515
516 (((
517 486.5 - SF7BW125 to SF12BW125
518 )))
519
520 (((
521 486.7 - SF7BW125 to SF12BW125
522 )))
523
524 (((
525 486.9 - SF7BW125 to SF12BW125
526 )))
527
528 (((
529 487.1 - SF7BW125 to SF12BW125
530 )))
531
532 (((
533 487.3 - SF7BW125 to SF12BW125
534 )))
535
536 (((
537 487.5 - SF7BW125 to SF12BW125
538 )))
539
540 (((
541 487.7 - SF7BW125 to SF12BW125
542 )))
543
544 (((
545
546 )))
547
548 (((
549 (% style="color:blue" %)**Downlink:**
550 )))
551
552 (((
553 506.7 - SF7BW125 to SF12BW125
554 )))
555
556 (((
557 506.9 - SF7BW125 to SF12BW125
558 )))
559
560 (((
561 507.1 - SF7BW125 to SF12BW125
562 )))
563
564 (((
565 507.3 - SF7BW125 to SF12BW125
566 )))
567
568 (((
569 507.5 - SF7BW125 to SF12BW125
570 )))
571
572 (((
573 507.7 - SF7BW125 to SF12BW125
574 )))
575
576 (((
577 507.9 - SF7BW125 to SF12BW125
578 )))
579
580 (((
581 508.1 - SF7BW125 to SF12BW125
582 )))
583
584 (((
585 505.3 - SF12BW125 (RX2 downlink only)
586 )))
587
588
589
590 === 2.6.4  AU915-928(AU915) ===
591
592 (((
593 Default use CHE=2
594
595 (% style="color:blue" %)**Uplink:**
596
597 916.8 - SF7BW125 to SF12BW125
598
599 917.0 - SF7BW125 to SF12BW125
600
601 917.2 - SF7BW125 to SF12BW125
602
603 917.4 - SF7BW125 to SF12BW125
604
605 917.6 - SF7BW125 to SF12BW125
606
607 917.8 - SF7BW125 to SF12BW125
608
609 918.0 - SF7BW125 to SF12BW125
610
611 918.2 - SF7BW125 to SF12BW125
612
613
614 (% style="color:blue" %)**Downlink:**
615
616 923.3 - SF7BW500 to SF12BW500
617
618 923.9 - SF7BW500 to SF12BW500
619
620 924.5 - SF7BW500 to SF12BW500
621
622 925.1 - SF7BW500 to SF12BW500
623
624 925.7 - SF7BW500 to SF12BW500
625
626 926.3 - SF7BW500 to SF12BW500
627
628 926.9 - SF7BW500 to SF12BW500
629
630 927.5 - SF7BW500 to SF12BW500
631
632 923.3 - SF12BW500(RX2 downlink only)
633
634
635
636 )))
637
638 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
639
640 (((
641 (% style="color:blue" %)**Default Uplink channel:**
642 )))
643
644 (((
645 923.2 - SF7BW125 to SF10BW125
646 )))
647
648 (((
649 923.4 - SF7BW125 to SF10BW125
650 )))
651
652 (((
653
654 )))
655
656 (((
657 (% style="color:blue" %)**Additional Uplink Channel**:
658 )))
659
660 (((
661 (OTAA mode, channel added by JoinAccept message)
662 )))
663
664 (((
665
666 )))
667
668 (((
669 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
670 )))
671
672 (((
673 922.2 - SF7BW125 to SF10BW125
674 )))
675
676 (((
677 922.4 - SF7BW125 to SF10BW125
678 )))
679
680 (((
681 922.6 - SF7BW125 to SF10BW125
682 )))
683
684 (((
685 922.8 - SF7BW125 to SF10BW125
686 )))
687
688 (((
689 923.0 - SF7BW125 to SF10BW125
690 )))
691
692 (((
693 922.0 - SF7BW125 to SF10BW125
694 )))
695
696 (((
697
698 )))
699
700 (((
701 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
702 )))
703
704 (((
705 923.6 - SF7BW125 to SF10BW125
706 )))
707
708 (((
709 923.8 - SF7BW125 to SF10BW125
710 )))
711
712 (((
713 924.0 - SF7BW125 to SF10BW125
714 )))
715
716 (((
717 924.2 - SF7BW125 to SF10BW125
718 )))
719
720 (((
721 924.4 - SF7BW125 to SF10BW125
722 )))
723
724 (((
725 924.6 - SF7BW125 to SF10BW125
726 )))
727
728 (((
729
730 )))
731
732 (((
733 (% style="color:blue" %)**Downlink:**
734 )))
735
736 (((
737 Uplink channels 1-8 (RX1)
738 )))
739
740 (((
741 923.2 - SF10BW125 (RX2)
742 )))
743
744
745
746 === 2.6.6  KR920-923 (KR920) ===
747
748 (((
749 (% style="color:blue" %)**Default channel:**
750 )))
751
752 (((
753 922.1 - SF7BW125 to SF12BW125
754 )))
755
756 (((
757 922.3 - SF7BW125 to SF12BW125
758 )))
759
760 (((
761 922.5 - SF7BW125 to SF12BW125
762 )))
763
764 (((
765
766 )))
767
768 (((
769 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
770 )))
771
772 (((
773 922.1 - SF7BW125 to SF12BW125
774 )))
775
776 (((
777 922.3 - SF7BW125 to SF12BW125
778 )))
779
780 (((
781 922.5 - SF7BW125 to SF12BW125
782 )))
783
784 (((
785 922.7 - SF7BW125 to SF12BW125
786 )))
787
788 (((
789 922.9 - SF7BW125 to SF12BW125
790 )))
791
792 (((
793 923.1 - SF7BW125 to SF12BW125
794 )))
795
796 (((
797 923.3 - SF7BW125 to SF12BW125
798 )))
799
800 (((
801
802 )))
803
804 (((
805 (% style="color:blue" %)**Downlink:**
806 )))
807
808 (((
809 Uplink channels 1-7(RX1)
810 )))
811
812 (((
813 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
814 )))
815
816
817
818 === 2.6.7  IN865-867 (IN865) ===
819
820 (((
821 (% style="color:blue" %)**Uplink:**
822 )))
823
824 (((
825 865.0625 - SF7BW125 to SF12BW125
826 )))
827
828 (((
829 865.4025 - SF7BW125 to SF12BW125
830 )))
831
832 (((
833 865.9850 - SF7BW125 to SF12BW125
834 )))
835
836 (((
837
838 )))
839
840 (((
841 (% style="color:blue" %)**Downlink:**
842 )))
843
844 (((
845 Uplink channels 1-3 (RX1)
846 )))
847
848 (((
849 866.550 - SF10BW125 (RX2)
850 )))
851
852
853
854 == 2.7  LED Indicator ==
855
856 The LDDS75 has an internal LED which is to show the status of different state.
857
858
859 * Blink once when device power on.
860 * The device detects the sensor and flashes 5 times.
861 * Solid ON for 5 seconds once device successful Join the network.
862 * Blink once when device transmit a packet.
863
864 == 2.8  ​Firmware Change Log ==
865
866
867 **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/]]
868
869
870 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
871
872
873
874 == 2.9  Mechanical ==
875
876
877 [[image:image-20220610172003-1.png]]
878
879
880 [[image:image-20220610172003-2.png]]
881
882
883
884 == 2.10  Battery Analysis ==
885
886 === 2.10.1  Battery Type ===
887
888 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.
889
890
891 The battery related documents as below:
892
893 * (((
894 [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
895 )))
896 * (((
897 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
898 )))
899 * (((
900 [[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]]
901 )))
902
903 [[image:image-20220610172400-3.png]]
904
905
906
907 === 2.10.2  Replace the battery ===
908
909 (((
910 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.
911 )))
912
913 (((
914
915 )))
916
917 (((
918 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)
919 )))
920
921
922
923 = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
924
925 (((
926 (((
927 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
928 )))
929 )))
930
931 * (((
932 (((
933 AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
934 )))
935 )))
936 * (((
937 (((
938 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
939 )))
940 )))
941
942 (((
943 (((
944
945 )))
946
947 (((
948 There are two kinds of commands to configure LDDS75, they are:
949 )))
950 )))
951
952 * (((
953 (((
954 (% style="color:#4f81bd" %)** General Commands**.
955 )))
956 )))
957
958 (((
959 (((
960 These commands are to configure:
961 )))
962 )))
963
964 * (((
965 (((
966 General system settings like: uplink interval.
967 )))
968 )))
969 * (((
970 (((
971 LoRaWAN protocol & radio related command.
972 )))
973 )))
974
975 (((
976 (((
977 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]]
978 )))
979 )))
980
981 (((
982 (((
983
984 )))
985 )))
986
987 * (((
988 (((
989 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
990 )))
991 )))
992
993 (((
994 (((
995 These commands only valid for LDDS75, as below:
996 )))
997 )))
998
999
1000
1001 == 3.1  Access AT Commands ==
1002
1003 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.
1004
1005 [[image:image-20220610172924-4.png||height="483" width="988"]]
1006
1007
1008 Or if you have below board, use below connection:
1009
1010
1011 [[image:image-20220610172924-5.png]]
1012
1013
1014 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:
1015
1016
1017 [[image:image-20220610172924-6.png||height="601" width="860"]]
1018
1019
1020
1021 == 3.2  Set Transmit Interval Time ==
1022
1023 Feature: Change LoRaWAN End Node Transmit Interval.
1024
1025 (% style="color:#037691" %)**AT Command: AT+TDC**
1026
1027 [[image:image-20220610173409-7.png]]
1028
1029
1030 (((
1031 (% style="color:#037691" %)**Downlink Command: 0x01**
1032 )))
1033
1034 (((
1035 (((
1036 Format: Command Code (0x01) followed by 3 bytes time value.
1037
1038 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1039
1040 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1041 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1042 )))
1043
1044
1045
1046 )))
1047
1048 == 3.3  Set Interrupt Mode ==
1049
1050 Feature, Set Interrupt mode for GPIO_EXIT.
1051
1052 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1053
1054 [[image:image-20220610174917-9.png]]
1055
1056
1057 (% style="color:#037691" %)**Downlink Command: 0x06**
1058
1059 Format: Command Code (0x06) followed by 3 bytes.
1060
1061 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1062
1063 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1064 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1065
1066 = 4.  FAQ =
1067
1068 == 4.1  What is the frequency plan for LDDS75? ==
1069
1070 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"]]
1071
1072
1073
1074 == 4.2  How to change the LoRa Frequency Bands/Region ==
1075
1076 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1077 When downloading the images, choose the required image file for download. ​
1078
1079
1080
1081 == 4.3  Can I use LDDS75 in condensation environment? ==
1082
1083 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1084
1085
1086
1087 = 5.  Trouble Shooting =
1088
1089 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1090
1091 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1092
1093
1094 == 5.2  AT Command input doesn't work ==
1095
1096 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.
1097
1098 (((
1099
1100 )))
1101
1102
1103 = 6.  Order Info =
1104
1105
1106 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1107
1108
1109 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1110
1111 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1112 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1113 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1114 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1115 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1116 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1117 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1118 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1119
1120 (% style="color:blue" %)**YY**(%%): Battery Option
1121
1122 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1123 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1124
1125 = 7. ​ Packing Info =
1126
1127
1128 **Package Includes**:
1129
1130 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1131
1132 **Dimension and weight**:
1133
1134 * Device Size: cm
1135 * Device Weight: g
1136 * Package Size / pcs : cm
1137 * Weight / pcs : g
1138
1139 = 8.  ​Support =
1140
1141 * 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.
1142 * 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]].