Version 154.2 by Xiaoling on 2022/06/15 09:00
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1 (% style="text-align:center" %)
2 [[image:1655254599445-662.png]]
3
4
5
6
7 **Table of Contents:**
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14
15
16 = 1.  Introduction =
17
18 == 1.1 ​ What is LoRaWAN Ultrasonic liquid level Sensor ==
19
20 (((
21
22
23 (((
24 (((
25 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.
26 )))
27
28 (((
29 It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
30 )))
31
32 (((
33 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.
34 )))
35
36 (((
37 LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
38 )))
39
40 (((
41 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.
42 )))
43
44 (((
45 (% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
46 )))
47 )))
48 )))
49
50
51 [[image:1654847051249-359.png]]
52
53
54
55 == ​1.2  Features ==
56
57 * LoRaWAN 1.0.3 Class A
58 * Ultra low power consumption
59 * Distance Detection by Ultrasonic technology
60 * Flat object range 280mm - 7500mm
61 * Accuracy: ±(1cm+S*0.3%) (S: Distance)
62 * Cable Length : 25cm
63 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
64 * AT Commands to change parameters
65 * Uplink on periodically
66 * Downlink to change configure
67 * IP66 Waterproof Enclosure
68 * 4000mAh or 8500mAh Battery for long term use
69
70
71 == 1.3  Specification ==
72
73 === 1.3.1  Rated environmental conditions ===
74
75 [[image:image-20220610154839-1.png]]
76
77 (((
78 **Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
79
80 **~ 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)**
81 )))
82
83
84
85 === 1.3.2  Effective measurement range Reference beam pattern ===
86
87 **(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
88
89
90
91 [[image:1654852253176-749.png]]
92
93
94
95 (((
96 **(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.**
97 )))
98
99
100 [[image:1654852175653-550.png]](% style="display:none" %) ** **
101
102
103
104 == 1.5 ​ Applications ==
105
106 * Horizontal distance measurement
107 * Liquid level measurement
108 * Parking management system
109 * Object proximity and presence detection
110 * Intelligent trash can management system
111 * Robot obstacle avoidance
112 * Automatic control
113 * Sewer
114 * Bottom water level monitoring
115
116
117 == 1.6  Pin mapping and power on ==
118
119
120 [[image:1654847583902-256.png]]
121
122
123
124 = 2.  Configure LDDS75 to connect to LoRaWAN network =
125
126 == 2.1  How it works ==
127
128 (((
129 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
130 )))
131
132 (((
133 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.
134 )))
135
136
137
138 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
139
140 (((
141 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.
142 )))
143
144 (((
145 [[image:1654848616367-242.png]]
146 )))
147
148 (((
149 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.
150 )))
151
152 (((
153
154
155 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
156 )))
157
158 (((
159 Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
160 )))
161
162 [[image:image-20220607170145-1.jpeg]]
163
164
165 (((
166 For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
167 )))
168
169 (((
170 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
171 )))
172
173 (((
174
175
176 **Add APP EUI in the application**
177 )))
178
179 [[image:image-20220610161353-4.png]]
180
181 [[image:image-20220610161353-5.png]]
182
183 [[image:image-20220610161353-6.png]]
184
185
186 [[image:image-20220610161353-7.png]]
187
188
189 You can also choose to create the device manually.
190
191 [[image:image-20220610161538-8.png]]
192
193
194
195 **Add APP KEY and DEV EUI**
196
197 [[image:image-20220610161538-9.png]]
198
199
200
201 (% style="color:blue" %)**Step 2**(%%): Power on LDDS75
202
203
204 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
205
206 [[image:image-20220610161724-10.png]]
207
208
209 (((
210 (% 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.
211 )))
212
213 [[image:1654849068701-275.png]]
214
215
216
217 == 2.3  ​Uplink Payload ==
218
219 (((
220 (((
221 LDDS75 will uplink payload via LoRaWAN with below payload format: 
222 )))
223
224 (((
225 Uplink payload includes in total 4 bytes.
226 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
227 )))
228 )))
229
230 (((
231
232 )))
233
234 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
235 |=(% style="width: 62.5px;" %)(((
236 **Size (bytes)**
237 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
238 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
239 [[Distance>>||anchor="H2.3.2A0Distance"]]
240
241 (unit: mm)
242 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
243 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
244 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
245
246 [[image:1654850511545-399.png]]
247
248
249
250 === 2.3.1  Battery Info ===
251
252
253 Check the battery voltage for LDDS75.
254
255 Ex1: 0x0B45 = 2885mV
256
257 Ex2: 0x0B49 = 2889mV
258
259
260
261 === 2.3.2  Distance ===
262
263 (((
264 Get the distance. Flat object range 280mm - 7500mm.
265 )))
266
267 (((
268 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.**
269 )))
270
271
272 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
273 * 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.
274
275
276 === 2.3.3  Interrupt Pin ===
277
278 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.
279
280 **Example:**
281
282 0x00: Normal uplink packet.
283
284 0x01: Interrupt Uplink Packet.
285
286
287
288 === 2.3.4  DS18B20 Temperature sensor ===
289
290 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
291
292 **Example**:
293
294 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
295
296 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
297
298 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
299
300
301
302 === 2.3.5  Sensor Flag ===
303
304 (((
305 0x01: Detect Ultrasonic Sensor
306 )))
307
308 (((
309 0x00: No Ultrasonic Sensor
310 )))
311
312
313
314 === 2.3.6  Decode payload in The Things Network ===
315
316 While using TTN network, you can add the payload format to decode the payload.
317
318
319 [[image:1654850829385-439.png]]
320
321 The payload decoder function for TTN V3 is here:
322
323 (((
324 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/]]
325 )))
326
327
328
329 == 2.4  Uplink Interval ==
330
331 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"]]
332
333
334
335 == 2.5  ​Show Data in DataCake IoT Server ==
336
337 (((
338 [[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:
339 )))
340
341 (((
342
343 )))
344
345 (((
346 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
347 )))
348
349 (((
350 (% 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:**
351 )))
352
353
354 [[image:1654592790040-760.png]]
355
356
357 [[image:1654592800389-571.png]]
358
359
360 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
361
362 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
363
364 [[image:1654851029373-510.png]]
365
366
367 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
368
369 [[image:image-20220610165129-11.png||height="595" width="1088"]]
370
371
372
373 == 2.6  Frequency Plans ==
374
375 (((
376 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.
377 )))
378
379
380
381 === 2.6.1  EU863-870 (EU868) ===
382
383 (((
384 (% style="color:blue" %)**Uplink:**
385 )))
386
387 (((
388 868.1 - SF7BW125 to SF12BW125
389 )))
390
391 (((
392 868.3 - SF7BW125 to SF12BW125 and SF7BW250
393 )))
394
395 (((
396 868.5 - SF7BW125 to SF12BW125
397 )))
398
399 (((
400 867.1 - SF7BW125 to SF12BW125
401 )))
402
403 (((
404 867.3 - SF7BW125 to SF12BW125
405 )))
406
407 (((
408 867.5 - SF7BW125 to SF12BW125
409 )))
410
411 (((
412 867.7 - SF7BW125 to SF12BW125
413 )))
414
415 (((
416 867.9 - SF7BW125 to SF12BW125
417 )))
418
419 (((
420 868.8 - FSK
421 )))
422
423 (((
424
425 )))
426
427 (((
428 (% style="color:blue" %)**Downlink:**
429 )))
430
431 (((
432 Uplink channels 1-9 (RX1)
433 )))
434
435 (((
436 869.525 - SF9BW125 (RX2 downlink only)
437 )))
438
439
440
441 === 2.6.2  US902-928(US915) ===
442
443 (((
444 Used in USA, Canada and South America. Default use CHE=2
445
446 (% style="color:blue" %)**Uplink:**
447
448 903.9 - SF7BW125 to SF10BW125
449
450 904.1 - SF7BW125 to SF10BW125
451
452 904.3 - SF7BW125 to SF10BW125
453
454 904.5 - SF7BW125 to SF10BW125
455
456 904.7 - SF7BW125 to SF10BW125
457
458 904.9 - SF7BW125 to SF10BW125
459
460 905.1 - SF7BW125 to SF10BW125
461
462 905.3 - SF7BW125 to SF10BW125
463
464
465 (% style="color:blue" %)**Downlink:**
466
467 923.3 - SF7BW500 to SF12BW500
468
469 923.9 - SF7BW500 to SF12BW500
470
471 924.5 - SF7BW500 to SF12BW500
472
473 925.1 - SF7BW500 to SF12BW500
474
475 925.7 - SF7BW500 to SF12BW500
476
477 926.3 - SF7BW500 to SF12BW500
478
479 926.9 - SF7BW500 to SF12BW500
480
481 927.5 - SF7BW500 to SF12BW500
482
483 923.3 - SF12BW500(RX2 downlink only)
484
485
486
487 )))
488
489 === 2.6.3  CN470-510 (CN470) ===
490
491 (((
492 Used in China, Default use CHE=1
493 )))
494
495 (((
496 (% style="color:blue" %)**Uplink:**
497 )))
498
499 (((
500 486.3 - SF7BW125 to SF12BW125
501 )))
502
503 (((
504 486.5 - SF7BW125 to SF12BW125
505 )))
506
507 (((
508 486.7 - SF7BW125 to SF12BW125
509 )))
510
511 (((
512 486.9 - SF7BW125 to SF12BW125
513 )))
514
515 (((
516 487.1 - SF7BW125 to SF12BW125
517 )))
518
519 (((
520 487.3 - SF7BW125 to SF12BW125
521 )))
522
523 (((
524 487.5 - SF7BW125 to SF12BW125
525 )))
526
527 (((
528 487.7 - SF7BW125 to SF12BW125
529 )))
530
531 (((
532
533 )))
534
535 (((
536 (% style="color:blue" %)**Downlink:**
537 )))
538
539 (((
540 506.7 - SF7BW125 to SF12BW125
541 )))
542
543 (((
544 506.9 - SF7BW125 to SF12BW125
545 )))
546
547 (((
548 507.1 - SF7BW125 to SF12BW125
549 )))
550
551 (((
552 507.3 - SF7BW125 to SF12BW125
553 )))
554
555 (((
556 507.5 - SF7BW125 to SF12BW125
557 )))
558
559 (((
560 507.7 - SF7BW125 to SF12BW125
561 )))
562
563 (((
564 507.9 - SF7BW125 to SF12BW125
565 )))
566
567 (((
568 508.1 - SF7BW125 to SF12BW125
569 )))
570
571 (((
572 505.3 - SF12BW125 (RX2 downlink only)
573 )))
574
575
576
577 === 2.6.4  AU915-928(AU915) ===
578
579 (((
580 Default use CHE=2
581
582 (% style="color:blue" %)**Uplink:**
583
584 916.8 - SF7BW125 to SF12BW125
585
586 917.0 - SF7BW125 to SF12BW125
587
588 917.2 - SF7BW125 to SF12BW125
589
590 917.4 - SF7BW125 to SF12BW125
591
592 917.6 - SF7BW125 to SF12BW125
593
594 917.8 - SF7BW125 to SF12BW125
595
596 918.0 - SF7BW125 to SF12BW125
597
598 918.2 - SF7BW125 to SF12BW125
599
600
601 (% style="color:blue" %)**Downlink:**
602
603 923.3 - SF7BW500 to SF12BW500
604
605 923.9 - SF7BW500 to SF12BW500
606
607 924.5 - SF7BW500 to SF12BW500
608
609 925.1 - SF7BW500 to SF12BW500
610
611 925.7 - SF7BW500 to SF12BW500
612
613 926.3 - SF7BW500 to SF12BW500
614
615 926.9 - SF7BW500 to SF12BW500
616
617 927.5 - SF7BW500 to SF12BW500
618
619 923.3 - SF12BW500(RX2 downlink only)
620
621
622
623 )))
624
625 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
626
627 (((
628 (% style="color:blue" %)**Default Uplink channel:**
629 )))
630
631 (((
632 923.2 - SF7BW125 to SF10BW125
633 )))
634
635 (((
636 923.4 - SF7BW125 to SF10BW125
637 )))
638
639 (((
640
641 )))
642
643 (((
644 (% style="color:blue" %)**Additional Uplink Channel**:
645 )))
646
647 (((
648 (OTAA mode, channel added by JoinAccept message)
649 )))
650
651 (((
652
653 )))
654
655 (((
656 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
657 )))
658
659 (((
660 922.2 - SF7BW125 to SF10BW125
661 )))
662
663 (((
664 922.4 - SF7BW125 to SF10BW125
665 )))
666
667 (((
668 922.6 - SF7BW125 to SF10BW125
669 )))
670
671 (((
672 922.8 - SF7BW125 to SF10BW125
673 )))
674
675 (((
676 923.0 - SF7BW125 to SF10BW125
677 )))
678
679 (((
680 922.0 - SF7BW125 to SF10BW125
681 )))
682
683 (((
684
685 )))
686
687 (((
688 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
689 )))
690
691 (((
692 923.6 - SF7BW125 to SF10BW125
693 )))
694
695 (((
696 923.8 - SF7BW125 to SF10BW125
697 )))
698
699 (((
700 924.0 - SF7BW125 to SF10BW125
701 )))
702
703 (((
704 924.2 - SF7BW125 to SF10BW125
705 )))
706
707 (((
708 924.4 - SF7BW125 to SF10BW125
709 )))
710
711 (((
712 924.6 - SF7BW125 to SF10BW125
713 )))
714
715 (((
716
717 )))
718
719 (((
720 (% style="color:blue" %)**Downlink:**
721 )))
722
723 (((
724 Uplink channels 1-8 (RX1)
725 )))
726
727 (((
728 923.2 - SF10BW125 (RX2)
729 )))
730
731
732
733 === 2.6.6  KR920-923 (KR920) ===
734
735 (((
736 (% style="color:blue" %)**Default channel:**
737 )))
738
739 (((
740 922.1 - SF7BW125 to SF12BW125
741 )))
742
743 (((
744 922.3 - SF7BW125 to SF12BW125
745 )))
746
747 (((
748 922.5 - SF7BW125 to SF12BW125
749 )))
750
751 (((
752
753 )))
754
755 (((
756 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
757 )))
758
759 (((
760 922.1 - SF7BW125 to SF12BW125
761 )))
762
763 (((
764 922.3 - SF7BW125 to SF12BW125
765 )))
766
767 (((
768 922.5 - SF7BW125 to SF12BW125
769 )))
770
771 (((
772 922.7 - SF7BW125 to SF12BW125
773 )))
774
775 (((
776 922.9 - SF7BW125 to SF12BW125
777 )))
778
779 (((
780 923.1 - SF7BW125 to SF12BW125
781 )))
782
783 (((
784 923.3 - SF7BW125 to SF12BW125
785 )))
786
787 (((
788
789 )))
790
791 (((
792 (% style="color:blue" %)**Downlink:**
793 )))
794
795 (((
796 Uplink channels 1-7(RX1)
797 )))
798
799 (((
800 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
801 )))
802
803
804
805 === 2.6.7  IN865-867 (IN865) ===
806
807 (((
808 (% style="color:blue" %)**Uplink:**
809 )))
810
811 (((
812 865.0625 - SF7BW125 to SF12BW125
813 )))
814
815 (((
816 865.4025 - SF7BW125 to SF12BW125
817 )))
818
819 (((
820 865.9850 - SF7BW125 to SF12BW125
821 )))
822
823 (((
824
825 )))
826
827 (((
828 (% style="color:blue" %)**Downlink:**
829 )))
830
831 (((
832 Uplink channels 1-3 (RX1)
833 )))
834
835 (((
836 866.550 - SF10BW125 (RX2)
837 )))
838
839
840
841 == 2.7  LED Indicator ==
842
843 The LDDS75 has an internal LED which is to show the status of different state.
844
845
846 * Blink once when device power on.
847 * The device detects the sensor and flashes 5 times.
848 * Solid ON for 5 seconds once device successful Join the network.
849 * Blink once when device transmit a packet.
850
851
852 == 2.8  ​Firmware Change Log ==
853
854
855 (((
856 **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/]]
857 )))
858
859 (((
860
861 )))
862
863 (((
864 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
865 )))
866
867
868
869 == 2.9  Mechanical ==
870
871
872 [[image:image-20220610172003-1.png]]
873
874
875 [[image:image-20220610172003-2.png]]
876
877
878
879 == 2.10  Battery Analysis ==
880
881 === 2.10.1  Battery Type ===
882
883 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.
884
885
886 The battery related documents as below:
887
888 * (((
889 [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
890 )))
891 * (((
892 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
893 )))
894 * (((
895 [[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]]
896 )))
897
898 [[image:image-20220610172400-3.png]]
899
900
901
902 === 2.10.2  Replace the battery ===
903
904 (((
905 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.
906 )))
907
908 (((
909
910 )))
911
912 (((
913 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)
914 )))
915
916
917
918 = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
919
920 (((
921 (((
922 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
923 )))
924 )))
925
926 * (((
927 (((
928 AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
929 )))
930 )))
931 * (((
932 (((
933 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
934 )))
935 )))
936
937 (((
938 (((
939
940 )))
941
942 (((
943 There are two kinds of commands to configure LDDS75, they are:
944 )))
945 )))
946
947 * (((
948 (((
949 (% style="color:#4f81bd" %)** General Commands**.
950 )))
951 )))
952
953 (((
954 (((
955 These commands are to configure:
956 )))
957 )))
958
959 * (((
960 (((
961 General system settings like: uplink interval.
962 )))
963 )))
964 * (((
965 (((
966 LoRaWAN protocol & radio related command.
967 )))
968 )))
969
970 (((
971 (((
972 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]]
973 )))
974 )))
975
976 (((
977 (((
978
979 )))
980 )))
981
982 * (((
983 (((
984 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
985 )))
986 )))
987
988 (((
989 (((
990 These commands only valid for LDDS75, as below:
991 )))
992 )))
993
994
995
996 == 3.1  Access AT Commands ==
997
998 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.
999
1000 [[image:image-20220610172924-4.png||height="483" width="988"]]
1001
1002
1003 Or if you have below board, use below connection:
1004
1005
1006 [[image:image-20220610172924-5.png]]
1007
1008
1009 (((
1010 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:
1011 )))
1012
1013
1014 [[image:image-20220610172924-6.png||height="601" width="860"]]
1015
1016
1017
1018 == 3.2  Set Transmit Interval Time ==
1019
1020 Feature: Change LoRaWAN End Node Transmit Interval.
1021
1022 (% style="color:#037691" %)**AT Command: AT+TDC**
1023
1024 [[image:image-20220610173409-7.png]]
1025
1026
1027 (((
1028 (% style="color:#037691" %)**Downlink Command: 0x01**
1029 )))
1030
1031 (((
1032 (((
1033 Format: Command Code (0x01) followed by 3 bytes time value.
1034
1035 (((
1036 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1037 )))
1038
1039 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1040 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1041 )))
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 (((
1062 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1063 )))
1064
1065 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1066 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1067
1068
1069 = 4.  FAQ =
1070
1071 == 4.1  What is the frequency plan for LDDS75? ==
1072
1073 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"]]
1074
1075
1076
1077 == 4.2  How to change the LoRa Frequency Bands/Region ==
1078
1079 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1080 When downloading the images, choose the required image file for download. ​
1081
1082
1083
1084 == 4.3  Can I use LDDS75 in condensation environment? ==
1085
1086 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1087
1088
1089
1090 = 5.  Trouble Shooting =
1091
1092 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1093
1094 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1095
1096
1097 == 5.2  AT Command input doesn't work ==
1098
1099 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.
1100
1101 (((
1102
1103 )))
1104
1105
1106 = 6.  Order Info =
1107
1108
1109 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1110
1111
1112 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1113
1114 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1115 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1116 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1117 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1118 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1119 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1120 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1121 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1122
1123 (% style="color:blue" %)**YY**(%%): Battery Option
1124
1125 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1126 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1127
1128
1129 = 7. ​ Packing Info =
1130
1131
1132 **Package Includes**:
1133
1134 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1135
1136 **Dimension and weight**:
1137
1138 * Device Size: cm
1139 * Device Weight: g
1140 * Package Size / pcs : cm
1141 * Weight / pcs : g
1142
1143
1144 = 8.  ​Support =
1145
1146 * 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.
1147 * Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]].

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