Version 155.2 by Xiaoling on 2022/06/11 10:18

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1 (% style="text-align:center" %)
2 [[image:1654912614655-664.png||height="530" width="628"]]
3
4 **Contents:**
5
6 {{toc/}}
7
8
9
10
11
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 LDDS45 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 LDDS45 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 LDDS45 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 LDDS45 is powered by (% style="color:#4472c4" %)** 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
49 )))
50
51 (((
52
53 )))
54
55 (((
56 Each LDDS45 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
71 [[image:1654912858581-740.png]]
72
73
74
75
76 == ​1.2  Features ==
77
78 * LoRaWAN 1.0.3 Class A
79 * Ultra-low power consumption
80 * Distance Detection by Ultrasonic technology
81 * Flat object range 30mm - 4500mm
82 * Accuracy: ±(1cm+S*0.3%) (S: Distance)
83 * Measure Angle: 60°
84 * Cable Length : 25cm
85 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
86 * AT Commands to change parameters
87 * Uplink on periodically
88 * Downlink to change configure
89 * IP66 Waterproof Enclosure
90 * 8500mAh Battery for long term use
91
92
93
94 == 1.3  Specification ==
95
96 === 1.3.1  Rated environmental conditions ===
97
98 [[image:image-20220610154839-1.png]]
99
100
101 (((
102 **Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);  **
103
104 **~ 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)**
105 )))
106
107
108
109 === 1.3.2  Effective measurement range Reference beam pattern ===
110
111 **(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
112
113
114
115 [[image:1654852253176-749.png]]
116
117
118
119 (((
120 **(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.**
121 )))
122
123
124 [[image:1654852175653-550.png]](% style="display:none" %) ** **
125
126
127
128 == 1.5 ​ Applications ==
129
130 * Horizontal distance measurement
131 * Liquid level measurement
132 * Parking management system
133 * Object proximity and presence detection
134 * Intelligent trash can management system
135 * Robot obstacle avoidance
136 * Automatic control
137 * Sewer
138 * Bottom water level monitoring
139
140
141
142 == 1.6  Pin mapping and power on ==
143
144
145 [[image:1654847583902-256.png]]
146
147
148
149 = 2.  Configure LDDS45 to connect to LoRaWAN network =
150
151 == 2.1  How it works ==
152
153 (((
154 The LDDS45 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 LDDS45. If there is coverage of the LoRaWAN network, it will automatically join the network via OTAA and start to send the sensor value
155 )))
156
157 (((
158 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 LDDS45.
159 )))
160
161
162
163 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
164
165 (((
166 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.
167 )))
168
169 [[image:1654913911773-521.png]]
170
171 (((
172
173 )))
174
175 (((
176 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.
177 )))
178
179 (((
180 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
181 )))
182
183 (((
184 Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
185 )))
186
187 [[image:image-20220607170145-1.jpeg]]
188
189
190 (((
191 For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
192 )))
193
194 (((
195 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
196 )))
197
198 (((
199 **Add APP EUI in the application**
200 )))
201
202 [[image:image-20220610161353-4.png]]
203
204 [[image:image-20220610161353-5.png]]
205
206 [[image:image-20220610161353-6.png]]
207
208
209 [[image:image-20220610161353-7.png]]
210
211
212 You can also choose to create the device manually.
213
214 [[image:image-20220610161538-8.png]]
215
216
217
218 **Add APP KEY and DEV EUI**
219
220 [[image:image-20220610161538-9.png]]
221
222
223
224 (% style="color:blue" %)**Step 2**(%%): Power on LDDS75
225
226
227 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
228
229 [[image:image-20220610161724-10.png]]
230
231
232 (((
233 (% 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.
234 )))
235
236 [[image:1654849068701-275.png]]
237
238
239
240 == 2.3  ​Uplink Payload ==
241
242 (((
243 (((
244 LDDS75 will uplink payload via LoRaWAN with below payload format: 
245 )))
246
247 (((
248 Uplink payload includes in total 4 bytes.
249 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
250 )))
251 )))
252
253 (((
254
255 )))
256
257 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
258 |=(% style="width: 62.5px;" %)(((
259 **Size (bytes)**
260 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
261 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
262 [[Distance>>||anchor="H2.3.2A0Distance"]]
263
264 (unit: mm)
265 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
266 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
267 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
268
269 [[image:1654850511545-399.png]]
270
271
272
273 === 2.3.1  Battery Info ===
274
275
276 Check the battery voltage for LDDS75.
277
278 Ex1: 0x0B45 = 2885mV
279
280 Ex2: 0x0B49 = 2889mV
281
282
283
284 === 2.3.2  Distance ===
285
286 (((
287 Get the distance. Flat object range 280mm - 7500mm.
288 )))
289
290 (((
291 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.**
292 )))
293
294
295 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
296 * 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.
297
298
299
300 === 2.3.3  Interrupt Pin ===
301
302 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.
303
304 **Example:**
305
306 0x00: Normal uplink packet.
307
308 0x01: Interrupt Uplink Packet.
309
310
311
312 === 2.3.4  DS18B20 Temperature sensor ===
313
314 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
315
316 **Example**:
317
318 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
319
320 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
321
322 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
323
324
325
326 === 2.3.5  Sensor Flag ===
327
328 (((
329 0x01: Detect Ultrasonic Sensor
330 )))
331
332 (((
333 0x00: No Ultrasonic Sensor
334 )))
335
336
337
338 === 2.3.6  Decode payload in The Things Network ===
339
340 While using TTN network, you can add the payload format to decode the payload.
341
342
343 [[image:1654850829385-439.png]]
344
345 The payload decoder function for TTN V3 is here:
346
347 (((
348 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/]]
349 )))
350
351
352
353 == 2.4  Uplink Interval ==
354
355 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"]]
356
357
358
359 == 2.5  ​Show Data in DataCake IoT Server ==
360
361 (((
362 [[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:
363 )))
364
365 (((
366
367 )))
368
369 (((
370 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
371 )))
372
373 (((
374 (% 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:**
375 )))
376
377
378 [[image:1654592790040-760.png]]
379
380
381 [[image:1654592800389-571.png]]
382
383
384 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
385
386 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
387
388 [[image:1654851029373-510.png]]
389
390
391 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
392
393 [[image:image-20220610165129-11.png||height="595" width="1088"]]
394
395
396
397 == 2.6  Frequency Plans ==
398
399 (((
400 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.
401 )))
402
403
404
405 === 2.6.1  EU863-870 (EU868) ===
406
407 (((
408 (% style="color:blue" %)**Uplink:**
409 )))
410
411 (((
412 868.1 - SF7BW125 to SF12BW125
413 )))
414
415 (((
416 868.3 - SF7BW125 to SF12BW125 and SF7BW250
417 )))
418
419 (((
420 868.5 - SF7BW125 to SF12BW125
421 )))
422
423 (((
424 867.1 - SF7BW125 to SF12BW125
425 )))
426
427 (((
428 867.3 - SF7BW125 to SF12BW125
429 )))
430
431 (((
432 867.5 - SF7BW125 to SF12BW125
433 )))
434
435 (((
436 867.7 - SF7BW125 to SF12BW125
437 )))
438
439 (((
440 867.9 - SF7BW125 to SF12BW125
441 )))
442
443 (((
444 868.8 - FSK
445 )))
446
447 (((
448
449 )))
450
451 (((
452 (% style="color:blue" %)**Downlink:**
453 )))
454
455 (((
456 Uplink channels 1-9 (RX1)
457 )))
458
459 (((
460 869.525 - SF9BW125 (RX2 downlink only)
461 )))
462
463
464
465 === 2.6.2  US902-928(US915) ===
466
467 (((
468 Used in USA, Canada and South America. Default use CHE=2
469
470 (% style="color:blue" %)**Uplink:**
471
472 903.9 - SF7BW125 to SF10BW125
473
474 904.1 - SF7BW125 to SF10BW125
475
476 904.3 - SF7BW125 to SF10BW125
477
478 904.5 - SF7BW125 to SF10BW125
479
480 904.7 - SF7BW125 to SF10BW125
481
482 904.9 - SF7BW125 to SF10BW125
483
484 905.1 - SF7BW125 to SF10BW125
485
486 905.3 - SF7BW125 to SF10BW125
487
488
489 (% style="color:blue" %)**Downlink:**
490
491 923.3 - SF7BW500 to SF12BW500
492
493 923.9 - SF7BW500 to SF12BW500
494
495 924.5 - SF7BW500 to SF12BW500
496
497 925.1 - SF7BW500 to SF12BW500
498
499 925.7 - SF7BW500 to SF12BW500
500
501 926.3 - SF7BW500 to SF12BW500
502
503 926.9 - SF7BW500 to SF12BW500
504
505 927.5 - SF7BW500 to SF12BW500
506
507 923.3 - SF12BW500(RX2 downlink only)
508
509
510
511 )))
512
513 === 2.6.3  CN470-510 (CN470) ===
514
515 (((
516 Used in China, Default use CHE=1
517 )))
518
519 (((
520 (% style="color:blue" %)**Uplink:**
521 )))
522
523 (((
524 486.3 - SF7BW125 to SF12BW125
525 )))
526
527 (((
528 486.5 - SF7BW125 to SF12BW125
529 )))
530
531 (((
532 486.7 - SF7BW125 to SF12BW125
533 )))
534
535 (((
536 486.9 - SF7BW125 to SF12BW125
537 )))
538
539 (((
540 487.1 - SF7BW125 to SF12BW125
541 )))
542
543 (((
544 487.3 - SF7BW125 to SF12BW125
545 )))
546
547 (((
548 487.5 - SF7BW125 to SF12BW125
549 )))
550
551 (((
552 487.7 - SF7BW125 to SF12BW125
553 )))
554
555 (((
556
557 )))
558
559 (((
560 (% style="color:blue" %)**Downlink:**
561 )))
562
563 (((
564 506.7 - SF7BW125 to SF12BW125
565 )))
566
567 (((
568 506.9 - SF7BW125 to SF12BW125
569 )))
570
571 (((
572 507.1 - SF7BW125 to SF12BW125
573 )))
574
575 (((
576 507.3 - SF7BW125 to SF12BW125
577 )))
578
579 (((
580 507.5 - SF7BW125 to SF12BW125
581 )))
582
583 (((
584 507.7 - SF7BW125 to SF12BW125
585 )))
586
587 (((
588 507.9 - SF7BW125 to SF12BW125
589 )))
590
591 (((
592 508.1 - SF7BW125 to SF12BW125
593 )))
594
595 (((
596 505.3 - SF12BW125 (RX2 downlink only)
597 )))
598
599
600
601 === 2.6.4  AU915-928(AU915) ===
602
603 (((
604 Default use CHE=2
605
606 (% style="color:blue" %)**Uplink:**
607
608 916.8 - SF7BW125 to SF12BW125
609
610 917.0 - SF7BW125 to SF12BW125
611
612 917.2 - SF7BW125 to SF12BW125
613
614 917.4 - SF7BW125 to SF12BW125
615
616 917.6 - SF7BW125 to SF12BW125
617
618 917.8 - SF7BW125 to SF12BW125
619
620 918.0 - SF7BW125 to SF12BW125
621
622 918.2 - SF7BW125 to SF12BW125
623
624
625 (% style="color:blue" %)**Downlink:**
626
627 923.3 - SF7BW500 to SF12BW500
628
629 923.9 - SF7BW500 to SF12BW500
630
631 924.5 - SF7BW500 to SF12BW500
632
633 925.1 - SF7BW500 to SF12BW500
634
635 925.7 - SF7BW500 to SF12BW500
636
637 926.3 - SF7BW500 to SF12BW500
638
639 926.9 - SF7BW500 to SF12BW500
640
641 927.5 - SF7BW500 to SF12BW500
642
643 923.3 - SF12BW500(RX2 downlink only)
644
645
646
647 )))
648
649 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
650
651 (((
652 (% style="color:blue" %)**Default Uplink channel:**
653 )))
654
655 (((
656 923.2 - SF7BW125 to SF10BW125
657 )))
658
659 (((
660 923.4 - SF7BW125 to SF10BW125
661 )))
662
663 (((
664
665 )))
666
667 (((
668 (% style="color:blue" %)**Additional Uplink Channel**:
669 )))
670
671 (((
672 (OTAA mode, channel added by JoinAccept message)
673 )))
674
675 (((
676
677 )))
678
679 (((
680 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
681 )))
682
683 (((
684 922.2 - SF7BW125 to SF10BW125
685 )))
686
687 (((
688 922.4 - SF7BW125 to SF10BW125
689 )))
690
691 (((
692 922.6 - SF7BW125 to SF10BW125
693 )))
694
695 (((
696 922.8 - SF7BW125 to SF10BW125
697 )))
698
699 (((
700 923.0 - SF7BW125 to SF10BW125
701 )))
702
703 (((
704 922.0 - SF7BW125 to SF10BW125
705 )))
706
707 (((
708
709 )))
710
711 (((
712 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
713 )))
714
715 (((
716 923.6 - SF7BW125 to SF10BW125
717 )))
718
719 (((
720 923.8 - SF7BW125 to SF10BW125
721 )))
722
723 (((
724 924.0 - SF7BW125 to SF10BW125
725 )))
726
727 (((
728 924.2 - SF7BW125 to SF10BW125
729 )))
730
731 (((
732 924.4 - SF7BW125 to SF10BW125
733 )))
734
735 (((
736 924.6 - SF7BW125 to SF10BW125
737 )))
738
739 (((
740
741 )))
742
743 (((
744 (% style="color:blue" %)**Downlink:**
745 )))
746
747 (((
748 Uplink channels 1-8 (RX1)
749 )))
750
751 (((
752 923.2 - SF10BW125 (RX2)
753 )))
754
755
756
757 === 2.6.6  KR920-923 (KR920) ===
758
759 (((
760 (% style="color:blue" %)**Default channel:**
761 )))
762
763 (((
764 922.1 - SF7BW125 to SF12BW125
765 )))
766
767 (((
768 922.3 - SF7BW125 to SF12BW125
769 )))
770
771 (((
772 922.5 - SF7BW125 to SF12BW125
773 )))
774
775 (((
776
777 )))
778
779 (((
780 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
781 )))
782
783 (((
784 922.1 - SF7BW125 to SF12BW125
785 )))
786
787 (((
788 922.3 - SF7BW125 to SF12BW125
789 )))
790
791 (((
792 922.5 - SF7BW125 to SF12BW125
793 )))
794
795 (((
796 922.7 - SF7BW125 to SF12BW125
797 )))
798
799 (((
800 922.9 - SF7BW125 to SF12BW125
801 )))
802
803 (((
804 923.1 - SF7BW125 to SF12BW125
805 )))
806
807 (((
808 923.3 - SF7BW125 to SF12BW125
809 )))
810
811 (((
812
813 )))
814
815 (((
816 (% style="color:blue" %)**Downlink:**
817 )))
818
819 (((
820 Uplink channels 1-7(RX1)
821 )))
822
823 (((
824 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
825 )))
826
827
828
829 === 2.6.7  IN865-867 (IN865) ===
830
831 (((
832 (% style="color:blue" %)**Uplink:**
833 )))
834
835 (((
836 865.0625 - SF7BW125 to SF12BW125
837 )))
838
839 (((
840 865.4025 - SF7BW125 to SF12BW125
841 )))
842
843 (((
844 865.9850 - SF7BW125 to SF12BW125
845 )))
846
847 (((
848
849 )))
850
851 (((
852 (% style="color:blue" %)**Downlink:**
853 )))
854
855 (((
856 Uplink channels 1-3 (RX1)
857 )))
858
859 (((
860 866.550 - SF10BW125 (RX2)
861 )))
862
863
864
865 == 2.7  LED Indicator ==
866
867 The LDDS75 has an internal LED which is to show the status of different state.
868
869
870 * Blink once when device power on.
871 * The device detects the sensor and flashes 5 times.
872 * Solid ON for 5 seconds once device successful Join the network.
873 * Blink once when device transmit a packet.
874
875
876
877 == 2.8  ​Firmware Change Log ==
878
879
880 (((
881 **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/]]
882 )))
883
884 (((
885
886 )))
887
888 (((
889 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
890 )))
891
892
893
894 == 2.9  Mechanical ==
895
896
897 [[image:image-20220610172003-1.png]]
898
899
900 [[image:image-20220610172003-2.png]]
901
902
903
904 == 2.10  Battery Analysis ==
905
906 === 2.10.1  Battery Type ===
907
908 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.
909
910
911 The battery related documents as below:
912
913 * (((
914 [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
915 )))
916 * (((
917 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
918 )))
919 * (((
920 [[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]]
921 )))
922
923 [[image:image-20220610172400-3.png]]
924
925
926
927 === 2.10.2  Replace the battery ===
928
929 (((
930 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.
931 )))
932
933 (((
934
935 )))
936
937 (((
938 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)
939 )))
940
941
942
943 = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
944
945 (((
946 (((
947 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
948 )))
949 )))
950
951 * (((
952 (((
953 AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
954 )))
955 )))
956 * (((
957 (((
958 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
959 )))
960 )))
961
962 (((
963 (((
964
965 )))
966
967 (((
968 There are two kinds of commands to configure LDDS75, they are:
969 )))
970 )))
971
972 * (((
973 (((
974 (% style="color:#4f81bd" %)** General Commands**.
975 )))
976 )))
977
978 (((
979 (((
980 These commands are to configure:
981 )))
982 )))
983
984 * (((
985 (((
986 General system settings like: uplink interval.
987 )))
988 )))
989 * (((
990 (((
991 LoRaWAN protocol & radio related command.
992 )))
993 )))
994
995 (((
996 (((
997 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]]
998 )))
999 )))
1000
1001 (((
1002 (((
1003
1004 )))
1005 )))
1006
1007 * (((
1008 (((
1009 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
1010 )))
1011 )))
1012
1013 (((
1014 (((
1015 These commands only valid for LDDS75, as below:
1016 )))
1017 )))
1018
1019
1020
1021 == 3.1  Access AT Commands ==
1022
1023 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.
1024
1025 [[image:image-20220610172924-4.png||height="483" width="988"]]
1026
1027
1028 Or if you have below board, use below connection:
1029
1030
1031 [[image:image-20220610172924-5.png]]
1032
1033
1034 (((
1035 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:
1036 )))
1037
1038
1039 [[image:image-20220610172924-6.png||height="601" width="860"]]
1040
1041
1042
1043 == 3.2  Set Transmit Interval Time ==
1044
1045 Feature: Change LoRaWAN End Node Transmit Interval.
1046
1047 (% style="color:#037691" %)**AT Command: AT+TDC**
1048
1049 [[image:image-20220610173409-7.png]]
1050
1051
1052 (((
1053 (% style="color:#037691" %)**Downlink Command: 0x01**
1054 )))
1055
1056 (((
1057 (((
1058 Format: Command Code (0x01) followed by 3 bytes time value.
1059
1060 (((
1061 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1062 )))
1063
1064 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1065 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1066 )))
1067 )))
1068
1069
1070
1071
1072
1073 == 3.3  Set Interrupt Mode ==
1074
1075 Feature, Set Interrupt mode for GPIO_EXIT.
1076
1077 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1078
1079 [[image:image-20220610174917-9.png]]
1080
1081
1082 (% style="color:#037691" %)**Downlink Command: 0x06**
1083
1084 Format: Command Code (0x06) followed by 3 bytes.
1085
1086 (((
1087 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1088 )))
1089
1090 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1091 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1092
1093
1094
1095 = 4.  FAQ =
1096
1097 == 4.1  What is the frequency plan for LDDS75? ==
1098
1099 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"]]
1100
1101
1102
1103 == 4.2  How to change the LoRa Frequency Bands/Region ==
1104
1105 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1106 When downloading the images, choose the required image file for download. ​
1107
1108
1109
1110 == 4.3  Can I use LDDS75 in condensation environment? ==
1111
1112 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1113
1114
1115
1116 = 5.  Trouble Shooting =
1117
1118 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1119
1120 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1121
1122
1123 == 5.2  AT Command input doesn't work ==
1124
1125 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.
1126
1127 (((
1128
1129 )))
1130
1131
1132 = 6.  Order Info =
1133
1134
1135 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1136
1137
1138 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1139
1140 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1141 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1142 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1143 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1144 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1145 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1146 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1147 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1148
1149 (% style="color:blue" %)**YY**(%%): Battery Option
1150
1151 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1152 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1153
1154
1155
1156 = 7. ​ Packing Info =
1157
1158
1159 **Package Includes**:
1160
1161 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1162
1163 **Dimension and weight**:
1164
1165 * Device Size: cm
1166 * Device Weight: g
1167 * Package Size / pcs : cm
1168 * Weight / pcs : g
1169
1170
1171
1172 = 8.  ​Support =
1173
1174 * 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.
1175 * 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]].