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Version 150.48 by Xiaoling on 2022/06/11 09:18
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1 (% style="text-align:center" %)
2 [[image:1654846127817-788.png]]
3
4 **Contents:**
5
6 {{toc/}}
7
8
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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 == 1.3  Specification ==
91
92 === 1.3.1  Rated environmental conditions ===
93
94 [[image:image-20220610154839-1.png]]
95
96 (((
97 **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)**
98 )))
99
100
101
102 === 1.3.2  Effective measurement range Reference beam pattern ===
103
104 **(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
105
106
107
108 [[image:1654852253176-749.png]]
109
110
111
112 (((
113 **(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.**
114 )))
115
116
117 [[image:1654852175653-550.png]](% style="display:none" %) ** **
118
119
120
121 == 1.5 ​ Applications ==
122
123 * Horizontal distance measurement
124 * Liquid level measurement
125 * Parking management system
126 * Object proximity and presence detection
127 * Intelligent trash can management system
128 * Robot obstacle avoidance
129 * Automatic control
130 * Sewer
131 * Bottom water level monitoring
132
133
134
135 == 1.6  Pin mapping and power on ==
136
137
138 [[image:1654847583902-256.png]]
139
140
141
142 = 2.  Configure LDDS75 to connect to LoRaWAN network =
143
144 == 2.1  How it works ==
145
146 (((
147 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
148 )))
149
150 (((
151 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.
152 )))
153
154
155
156 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
157
158 (((
159 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.
160 )))
161
162 (((
163 [[image:1654848616367-242.png]]
164 )))
165
166 (((
167 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.
168 )))
169
170 (((
171 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
172 )))
173
174 (((
175 Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
176 )))
177
178 [[image:image-20220607170145-1.jpeg]]
179
180
181 (((
182 For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
183 )))
184
185 (((
186 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
187 )))
188
189 (((
190 **Add APP EUI in the application**
191 )))
192
193 [[image:image-20220610161353-4.png]]
194
195 [[image:image-20220610161353-5.png]]
196
197 [[image:image-20220610161353-6.png]]
198
199
200 [[image:image-20220610161353-7.png]]
201
202
203 You can also choose to create the device manually.
204
205 [[image:image-20220610161538-8.png]]
206
207
208
209 **Add APP KEY and DEV EUI**
210
211 [[image:image-20220610161538-9.png]]
212
213
214
215 (% style="color:blue" %)**Step 2**(%%): Power on LDDS75
216
217
218 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
219
220 [[image:image-20220610161724-10.png]]
221
222
223 (((
224 (% 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.
225 )))
226
227 [[image:1654849068701-275.png]]
228
229
230
231 == 2.3  ​Uplink Payload ==
232
233 (((
234 (((
235 LDDS75 will uplink payload via LoRaWAN with below payload format: 
236 )))
237
238 (((
239 Uplink payload includes in total 4 bytes.
240 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
241 )))
242 )))
243
244 (((
245
246 )))
247
248 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
249 |=(% style="width: 62.5px;" %)(((
250 **Size (bytes)**
251 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
252 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
253 [[Distance>>||anchor="H2.3.2A0Distance"]]
254
255 (unit: mm)
256 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
257 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
258 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
259
260 [[image:1654850511545-399.png]]
261
262
263
264 === 2.3.1  Battery Info ===
265
266
267 Check the battery voltage for LDDS75.
268
269 Ex1: 0x0B45 = 2885mV
270
271 Ex2: 0x0B49 = 2889mV
272
273
274
275 === 2.3.2  Distance ===
276
277 (((
278 Get the distance. Flat object range 280mm - 7500mm.
279 )))
280
281 (((
282 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.**
283 )))
284
285
286 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
287 * 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.
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 0x01: Detect Ultrasonic Sensor
318
319 0x00: No Ultrasonic Sensor
320
321
322
323 === 2.3.6  Decode payload in The Things Network ===
324
325 While using TTN network, you can add the payload format to decode the payload.
326
327
328 [[image:1654850829385-439.png]]
329
330 The payload decoder function for TTN V3 is here:
331
332 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/]]
333
334
335
336 == 2.4  Uplink Interval ==
337
338 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"]]
339
340
341
342 == 2.5  ​Show Data in DataCake IoT Server ==
343
344 (((
345 [[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:
346 )))
347
348 (((
349
350 )))
351
352 (((
353 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
354 )))
355
356 (((
357 (% 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:**
358 )))
359
360
361 [[image:1654592790040-760.png]]
362
363
364 [[image:1654592800389-571.png]]
365
366
367 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
368
369 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
370
371 [[image:1654851029373-510.png]]
372
373
374 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
375
376 [[image:image-20220610165129-11.png||height="595" width="1088"]]
377
378
379
380 == 2.6  Frequency Plans ==
381
382 (((
383 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.
384 )))
385
386
387
388 === 2.6.1  EU863-870 (EU868) ===
389
390 (((
391 (% style="color:blue" %)**Uplink:**
392 )))
393
394 (((
395 868.1 - SF7BW125 to SF12BW125
396 )))
397
398 (((
399 868.3 - SF7BW125 to SF12BW125 and SF7BW250
400 )))
401
402 (((
403 868.5 - SF7BW125 to SF12BW125
404 )))
405
406 (((
407 867.1 - SF7BW125 to SF12BW125
408 )))
409
410 (((
411 867.3 - SF7BW125 to SF12BW125
412 )))
413
414 (((
415 867.5 - SF7BW125 to SF12BW125
416 )))
417
418 (((
419 867.7 - SF7BW125 to SF12BW125
420 )))
421
422 (((
423 867.9 - SF7BW125 to SF12BW125
424 )))
425
426 (((
427 868.8 - FSK
428 )))
429
430 (((
431
432 )))
433
434 (((
435 (% style="color:blue" %)**Downlink:**
436 )))
437
438 (((
439 Uplink channels 1-9 (RX1)
440 )))
441
442 (((
443 869.525 - SF9BW125 (RX2 downlink only)
444 )))
445
446
447
448 === 2.6.2  US902-928(US915) ===
449
450 (((
451 Used in USA, Canada and South America. Default use CHE=2
452
453 (% style="color:blue" %)**Uplink:**
454
455 903.9 - SF7BW125 to SF10BW125
456
457 904.1 - SF7BW125 to SF10BW125
458
459 904.3 - SF7BW125 to SF10BW125
460
461 904.5 - SF7BW125 to SF10BW125
462
463 904.7 - SF7BW125 to SF10BW125
464
465 904.9 - SF7BW125 to SF10BW125
466
467 905.1 - SF7BW125 to SF10BW125
468
469 905.3 - SF7BW125 to SF10BW125
470
471
472 (% style="color:blue" %)**Downlink:**
473
474 923.3 - SF7BW500 to SF12BW500
475
476 923.9 - SF7BW500 to SF12BW500
477
478 924.5 - SF7BW500 to SF12BW500
479
480 925.1 - SF7BW500 to SF12BW500
481
482 925.7 - SF7BW500 to SF12BW500
483
484 926.3 - SF7BW500 to SF12BW500
485
486 926.9 - SF7BW500 to SF12BW500
487
488 927.5 - SF7BW500 to SF12BW500
489
490 923.3 - SF12BW500(RX2 downlink only)
491
492
493
494 )))
495
496 === 2.6.3  CN470-510 (CN470) ===
497
498 (((
499 Used in China, Default use CHE=1
500 )))
501
502 (((
503 (% style="color:blue" %)**Uplink:**
504 )))
505
506 (((
507 486.3 - SF7BW125 to SF12BW125
508 )))
509
510 (((
511 486.5 - SF7BW125 to SF12BW125
512 )))
513
514 (((
515 486.7 - SF7BW125 to SF12BW125
516 )))
517
518 (((
519 486.9 - SF7BW125 to SF12BW125
520 )))
521
522 (((
523 487.1 - SF7BW125 to SF12BW125
524 )))
525
526 (((
527 487.3 - SF7BW125 to SF12BW125
528 )))
529
530 (((
531 487.5 - SF7BW125 to SF12BW125
532 )))
533
534 (((
535 487.7 - SF7BW125 to SF12BW125
536 )))
537
538 (((
539
540 )))
541
542 (((
543 (% style="color:blue" %)**Downlink:**
544 )))
545
546 (((
547 506.7 - SF7BW125 to SF12BW125
548 )))
549
550 (((
551 506.9 - SF7BW125 to SF12BW125
552 )))
553
554 (((
555 507.1 - SF7BW125 to SF12BW125
556 )))
557
558 (((
559 507.3 - SF7BW125 to SF12BW125
560 )))
561
562 (((
563 507.5 - SF7BW125 to SF12BW125
564 )))
565
566 (((
567 507.7 - SF7BW125 to SF12BW125
568 )))
569
570 (((
571 507.9 - SF7BW125 to SF12BW125
572 )))
573
574 (((
575 508.1 - SF7BW125 to SF12BW125
576 )))
577
578 (((
579 505.3 - SF12BW125 (RX2 downlink only)
580 )))
581
582
583
584 === 2.6.4  AU915-928(AU915) ===
585
586 (((
587 Default use CHE=2
588
589 (% style="color:blue" %)**Uplink:**
590
591 916.8 - SF7BW125 to SF12BW125
592
593 917.0 - SF7BW125 to SF12BW125
594
595 917.2 - SF7BW125 to SF12BW125
596
597 917.4 - SF7BW125 to SF12BW125
598
599 917.6 - SF7BW125 to SF12BW125
600
601 917.8 - SF7BW125 to SF12BW125
602
603 918.0 - SF7BW125 to SF12BW125
604
605 918.2 - SF7BW125 to SF12BW125
606
607
608 (% style="color:blue" %)**Downlink:**
609
610 923.3 - SF7BW500 to SF12BW500
611
612 923.9 - SF7BW500 to SF12BW500
613
614 924.5 - SF7BW500 to SF12BW500
615
616 925.1 - SF7BW500 to SF12BW500
617
618 925.7 - SF7BW500 to SF12BW500
619
620 926.3 - SF7BW500 to SF12BW500
621
622 926.9 - SF7BW500 to SF12BW500
623
624 927.5 - SF7BW500 to SF12BW500
625
626 923.3 - SF12BW500(RX2 downlink only)
627
628
629
630 )))
631
632 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
633
634 (((
635 (% style="color:blue" %)**Default Uplink channel:**
636 )))
637
638 (((
639 923.2 - SF7BW125 to SF10BW125
640 )))
641
642 (((
643 923.4 - SF7BW125 to SF10BW125
644 )))
645
646 (((
647
648 )))
649
650 (((
651 (% style="color:blue" %)**Additional Uplink Channel**:
652 )))
653
654 (((
655 (OTAA mode, channel added by JoinAccept message)
656 )))
657
658 (((
659
660 )))
661
662 (((
663 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
664 )))
665
666 (((
667 922.2 - SF7BW125 to SF10BW125
668 )))
669
670 (((
671 922.4 - SF7BW125 to SF10BW125
672 )))
673
674 (((
675 922.6 - SF7BW125 to SF10BW125
676 )))
677
678 (((
679 922.8 - SF7BW125 to SF10BW125
680 )))
681
682 (((
683 923.0 - SF7BW125 to SF10BW125
684 )))
685
686 (((
687 922.0 - SF7BW125 to SF10BW125
688 )))
689
690 (((
691
692 )))
693
694 (((
695 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
696 )))
697
698 (((
699 923.6 - SF7BW125 to SF10BW125
700 )))
701
702 (((
703 923.8 - SF7BW125 to SF10BW125
704 )))
705
706 (((
707 924.0 - SF7BW125 to SF10BW125
708 )))
709
710 (((
711 924.2 - SF7BW125 to SF10BW125
712 )))
713
714 (((
715 924.4 - SF7BW125 to SF10BW125
716 )))
717
718 (((
719 924.6 - SF7BW125 to SF10BW125
720 )))
721
722 (((
723
724 )))
725
726 (((
727 (% style="color:blue" %)**Downlink:**
728 )))
729
730 (((
731 Uplink channels 1-8 (RX1)
732 )))
733
734 (((
735 923.2 - SF10BW125 (RX2)
736 )))
737
738
739
740 === 2.6.6  KR920-923 (KR920) ===
741
742 (((
743 (% style="color:blue" %)**Default channel:**
744 )))
745
746 (((
747 922.1 - SF7BW125 to SF12BW125
748 )))
749
750 (((
751 922.3 - SF7BW125 to SF12BW125
752 )))
753
754 (((
755 922.5 - SF7BW125 to SF12BW125
756 )))
757
758 (((
759
760 )))
761
762 (((
763 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
764 )))
765
766 (((
767 922.1 - SF7BW125 to SF12BW125
768 )))
769
770 (((
771 922.3 - SF7BW125 to SF12BW125
772 )))
773
774 (((
775 922.5 - SF7BW125 to SF12BW125
776 )))
777
778 (((
779 922.7 - SF7BW125 to SF12BW125
780 )))
781
782 (((
783 922.9 - SF7BW125 to SF12BW125
784 )))
785
786 (((
787 923.1 - SF7BW125 to SF12BW125
788 )))
789
790 (((
791 923.3 - SF7BW125 to SF12BW125
792 )))
793
794 (((
795
796 )))
797
798 (((
799 (% style="color:blue" %)**Downlink:**
800 )))
801
802 (((
803 Uplink channels 1-7(RX1)
804 )))
805
806 (((
807 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
808 )))
809
810
811
812 === 2.6.7  IN865-867 (IN865) ===
813
814 (((
815 (% style="color:blue" %)**Uplink:**
816 )))
817
818 (((
819 865.0625 - SF7BW125 to SF12BW125
820 )))
821
822 (((
823 865.4025 - SF7BW125 to SF12BW125
824 )))
825
826 (((
827 865.9850 - SF7BW125 to SF12BW125
828 )))
829
830 (((
831
832 )))
833
834 (((
835 (% style="color:blue" %)**Downlink:**
836 )))
837
838 (((
839 Uplink channels 1-3 (RX1)
840 )))
841
842 (((
843 866.550 - SF10BW125 (RX2)
844 )))
845
846
847
848 == 2.7  LED Indicator ==
849
850 The LDDS75 has an internal LED which is to show the status of different state.
851
852
853 * Blink once when device power on.
854 * The device detects the sensor and flashes 5 times.
855 * Solid ON for 5 seconds once device successful Join the network.
856 * Blink once when device transmit a packet.
857
858 == 2.8  ​Firmware Change Log ==
859
860
861 **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/]]
862
863
864 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
865
866
867
868 == 2.9  Mechanical ==
869
870
871 [[image:image-20220610172003-1.png]]
872
873
874 [[image:image-20220610172003-2.png]]
875
876
877
878 == 2.10  Battery Analysis ==
879
880 === 2.10.1  Battery Type ===
881
882 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.
883
884
885 The battery related documents as below:
886
887 * (((
888 [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
889 )))
890 * (((
891 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
892 )))
893 * (((
894 [[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]]
895 )))
896
897 [[image:image-20220610172400-3.png]]
898
899
900
901 === 2.10.2  Replace the battery ===
902
903 (((
904 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.
905 )))
906
907 (((
908
909 )))
910
911 (((
912 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)
913 )))
914
915
916
917 = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
918
919 (((
920 (((
921 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
922 )))
923 )))
924
925 * (((
926 (((
927 AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
928 )))
929 )))
930 * (((
931 (((
932 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
933 )))
934 )))
935
936 (((
937 (((
938
939 )))
940
941 (((
942 There are two kinds of commands to configure LDDS75, they are:
943 )))
944 )))
945
946 * (((
947 (((
948 (% style="color:#4f81bd" %)** General Commands**.
949 )))
950 )))
951
952 (((
953 (((
954 These commands are to configure:
955 )))
956 )))
957
958 * (((
959 (((
960 General system settings like: uplink interval.
961 )))
962 )))
963 * (((
964 (((
965 LoRaWAN protocol & radio related command.
966 )))
967 )))
968
969 (((
970 (((
971 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]]
972 )))
973 )))
974
975 (((
976 (((
977
978 )))
979 )))
980
981 * (((
982 (((
983 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
984 )))
985 )))
986
987 (((
988 (((
989 These commands only valid for LDDS75, as below:
990 )))
991 )))
992
993
994
995 == 3.1  Access AT Commands ==
996
997 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.
998
999 [[image:image-20220610172924-4.png||height="483" width="988"]]
1000
1001
1002 Or if you have below board, use below connection:
1003
1004
1005 [[image:image-20220610172924-5.png]]
1006
1007
1008 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:
1009
1010
1011 [[image:image-20220610172924-6.png||height="601" width="860"]]
1012
1013
1014
1015 == 3.2  Set Transmit Interval Time ==
1016
1017 Feature: Change LoRaWAN End Node Transmit Interval.
1018
1019 (% style="color:#037691" %)**AT Command: AT+TDC**
1020
1021 [[image:image-20220610173409-7.png]]
1022
1023
1024 (((
1025 (% style="color:#037691" %)**Downlink Command: 0x01**
1026 )))
1027
1028 (((
1029 (((
1030 Format: Command Code (0x01) followed by 3 bytes time value.
1031
1032 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1033
1034 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1035 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1036 )))
1037
1038
1039
1040 )))
1041
1042 == 3.3  Set Interrupt Mode ==
1043
1044 Feature, Set Interrupt mode for GPIO_EXIT.
1045
1046 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1047
1048 [[image:image-20220610174917-9.png]]
1049
1050
1051 (% style="color:#037691" %)**Downlink Command: 0x06**
1052
1053 Format: Command Code (0x06) followed by 3 bytes.
1054
1055 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1056
1057 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1058 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1059
1060 = 4.  FAQ =
1061
1062 == 4.1  What is the frequency plan for LDDS75? ==
1063
1064 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"]]
1065
1066
1067
1068 == 4.2  How to change the LoRa Frequency Bands/Region ==
1069
1070 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1071 When downloading the images, choose the required image file for download. ​
1072
1073
1074
1075 == 4.3  Can I use LDDS75 in condensation environment? ==
1076
1077 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1078
1079
1080
1081 = 5.  Trouble Shooting =
1082
1083 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1084
1085 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1086
1087
1088 == 5.2  AT Command input doesn't work ==
1089
1090 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.
1091
1092 (((
1093
1094 )))
1095
1096
1097 = 6.  Order Info =
1098
1099
1100 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1101
1102
1103 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1104
1105 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1106 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1107 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1108 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1109 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1110 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1111 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1112 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1113
1114 (% style="color:blue" %)**YY**(%%): Battery Option
1115
1116 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1117 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1118
1119 = 7. ​ Packing Info =
1120
1121
1122 **Package Includes**:
1123
1124 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1125
1126 **Dimension and weight**:
1127
1128 * Device Size: cm
1129 * Device Weight: g
1130 * Package Size / pcs : cm
1131 * Weight / pcs : g
1132
1133 = 8.  ​Support =
1134
1135 * 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.
1136 * 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]].