Version 154.2 by Xiaoling on 2022/10/17 14:24
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1 (% style="text-align:center" %)
2 [[image:1654846127817-788.png]]
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4
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6
7
8 **Table of Contents:**
9
10 {{toc/}}
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16
17
18
19 = 1.  Introduction =
20
21 == 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
22
23 (((
24
25
26 (((
27 (((
28 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.
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 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.
37 )))
38
39 (((
40 LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
41 )))
42
43 (((
44 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.
45 )))
46
47 (((
48 (% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
49 )))
50 )))
51 )))
52
53
54 [[image:1654847051249-359.png]]
55
56
57
58 == ​1.2  Features ==
59
60
61 * LoRaWAN 1.0.3 Class A
62 * Ultra low power consumption
63 * Distance Detection by Ultrasonic technology
64 * Flat object range 280mm - 7500mm
65 * Accuracy: ±(1cm+S*0.3%) (S: Distance)
66 * Cable Length : 25cm
67 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
68 * AT Commands to change parameters
69 * Uplink on periodically
70 * Downlink to change configure
71 * IP66 Waterproof Enclosure
72 * 4000mAh or 8500mAh Battery for long term use
73
74
75
76 == 1.3  Specification ==
77
78 === 1.3.1  Rated environmental conditions ===
79
80
81 [[image:image-20220610154839-1.png]]
82
83 (((
84 **Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
85
86 **~ 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)**
87 )))
88
89
90
91 === 1.3.2  Effective measurement range Reference beam pattern ===
92
93
94 **(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
95
96
97
98 [[image:1654852253176-749.png]]
99
100
101
102 (((
103 **(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.**
104 )))
105
106
107 [[image:1654852175653-550.png]](% style="display:none" %) ** **
108
109
110
111 == 1.5 ​ Applications ==
112
113
114 * Horizontal distance measurement
115 * Liquid level measurement
116 * Parking management system
117 * Object proximity and presence detection
118 * Intelligent trash can management system
119 * Robot obstacle avoidance
120 * Automatic control
121 * Sewer
122 * Bottom water level monitoring
123
124
125
126 == 1.6  Pin mapping and power on ==
127
128
129 [[image:1654847583902-256.png]]
130
131
132
133 = 2.  Configure LDDS75 to connect to LoRaWAN network =
134
135
136 == 2.1  How it works ==
137
138
139 (((
140 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
141 )))
142
143 (((
144 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.
145 )))
146
147
148
149 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
150
151
152 (((
153 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.
154 )))
155
156 (((
157 [[image:1654848616367-242.png]]
158 )))
159
160 (((
161 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.
162 )))
163
164 (((
165
166
167 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
168 )))
169
170 (((
171 Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
172 )))
173
174 [[image:image-20220607170145-1.jpeg]]
175
176
177 (((
178 For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
179 )))
180
181 (((
182 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
183 )))
184
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 (((
223 (% 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.
224 )))
225
226 [[image:1654849068701-275.png]]
227
228
229
230 == 2.3  ​Uplink Payload ==
231
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 (((
279 Get the distance. Flat object range 280mm - 7500mm.
280 )))
281
282 (((
283 For example, if the data you get from the register is 0x0B 0x05, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** 0B05(H) = 2821 (D) = 2821 mm.**
284 )))
285
286
287 * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
288 * If the sensor value lower than 0x0118 (280mm), the sensor value will be invalid. Since v1.1.4, all value lower than 280mm will be set to 0x0014(20mm) which means the value is invalid.
289
290
291
292
293 === 2.3.3  Interrupt Pin ===
294
295
296 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.
297
298 **Example:**
299
300 0x00: Normal uplink packet.
301
302 0x01: Interrupt Uplink Packet.
303
304
305
306 === 2.3.4  DS18B20 Temperature sensor ===
307
308
309 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
310
311 **Example**:
312
313 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
314
315 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
316
317 (% style="color:red" %)**Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.**
318
319
320
321 === 2.3.5  Sensor Flag ===
322
323
324 (((
325 0x01: Detect Ultrasonic Sensor
326 )))
327
328 (((
329 0x00: No Ultrasonic Sensor
330 )))
331
332
333
334 === 2.3.6  Decode payload in The Things Network ===
335
336
337 While using TTN network, you can add the payload format to decode the payload.
338
339
340 [[image:1654850829385-439.png]]
341
342 The payload decoder function for TTN V3 is here:
343
344 (((
345 LDDS75 TTN V3 Payload Decoder:  [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
346 )))
347
348
349
350 == 2.4  Uplink Interval ==
351
352
353 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"]]
354
355
356
357 == 2.5  ​Show Data in DataCake IoT Server ==
358
359
360 (((
361 [[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:
362 )))
363
364 (((
365
366 )))
367
368 (((
369 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
370 )))
371
372 (((
373 (% 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:**
374 )))
375
376
377 [[image:1654592790040-760.png]]
378
379
380 [[image:1654592800389-571.png]]
381
382
383 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
384
385 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
386
387 [[image:1654851029373-510.png]]
388
389
390 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
391
392 [[image:image-20220610165129-11.png||height="595" width="1088"]]
393
394
395
396 == 2.6  Frequency Plans ==
397
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 (((
409 (% style="color:blue" %)**Uplink:**
410 )))
411
412 (((
413 868.1 - SF7BW125 to SF12BW125
414 )))
415
416 (((
417 868.3 - SF7BW125 to SF12BW125 and SF7BW250
418 )))
419
420 (((
421 868.5 - SF7BW125 to SF12BW125
422 )))
423
424 (((
425 867.1 - SF7BW125 to SF12BW125
426 )))
427
428 (((
429 867.3 - SF7BW125 to SF12BW125
430 )))
431
432 (((
433 867.5 - SF7BW125 to SF12BW125
434 )))
435
436 (((
437 867.7 - SF7BW125 to SF12BW125
438 )))
439
440 (((
441 867.9 - SF7BW125 to SF12BW125
442 )))
443
444 (((
445 868.8 - FSK
446 )))
447
448 (((
449
450 )))
451
452 (((
453 (% style="color:blue" %)**Downlink:**
454 )))
455
456 (((
457 Uplink channels 1-9 (RX1)
458 )))
459
460 (((
461 869.525 - SF9BW125 (RX2 downlink only)
462 )))
463
464
465
466 === 2.6.2  US902-928(US915) ===
467
468
469 (((
470 Used in USA, Canada and South America. Default use CHE=2
471
472 (% style="color:blue" %)**Uplink:**
473
474 903.9 - SF7BW125 to SF10BW125
475
476 904.1 - SF7BW125 to SF10BW125
477
478 904.3 - SF7BW125 to SF10BW125
479
480 904.5 - SF7BW125 to SF10BW125
481
482 904.7 - SF7BW125 to SF10BW125
483
484 904.9 - SF7BW125 to SF10BW125
485
486 905.1 - SF7BW125 to SF10BW125
487
488 905.3 - SF7BW125 to SF10BW125
489
490
491 (% style="color:blue" %)**Downlink:**
492
493 923.3 - SF7BW500 to SF12BW500
494
495 923.9 - SF7BW500 to SF12BW500
496
497 924.5 - SF7BW500 to SF12BW500
498
499 925.1 - SF7BW500 to SF12BW500
500
501 925.7 - SF7BW500 to SF12BW500
502
503 926.3 - SF7BW500 to SF12BW500
504
505 926.9 - SF7BW500 to SF12BW500
506
507 927.5 - SF7BW500 to SF12BW500
508
509 923.3 - SF12BW500(RX2 downlink only)
510
511
512
513 )))
514
515 === 2.6.3  CN470-510 (CN470) ===
516
517
518 (((
519 Used in China, Default use CHE=1
520 )))
521
522 (((
523 (% style="color:blue" %)**Uplink:**
524 )))
525
526 (((
527 486.3 - SF7BW125 to SF12BW125
528 )))
529
530 (((
531 486.5 - SF7BW125 to SF12BW125
532 )))
533
534 (((
535 486.7 - SF7BW125 to SF12BW125
536 )))
537
538 (((
539 486.9 - SF7BW125 to SF12BW125
540 )))
541
542 (((
543 487.1 - SF7BW125 to SF12BW125
544 )))
545
546 (((
547 487.3 - SF7BW125 to SF12BW125
548 )))
549
550 (((
551 487.5 - SF7BW125 to SF12BW125
552 )))
553
554 (((
555 487.7 - SF7BW125 to SF12BW125
556 )))
557
558 (((
559
560 )))
561
562 (((
563 (% style="color:blue" %)**Downlink:**
564 )))
565
566 (((
567 506.7 - SF7BW125 to SF12BW125
568 )))
569
570 (((
571 506.9 - SF7BW125 to SF12BW125
572 )))
573
574 (((
575 507.1 - SF7BW125 to SF12BW125
576 )))
577
578 (((
579 507.3 - SF7BW125 to SF12BW125
580 )))
581
582 (((
583 507.5 - SF7BW125 to SF12BW125
584 )))
585
586 (((
587 507.7 - SF7BW125 to SF12BW125
588 )))
589
590 (((
591 507.9 - SF7BW125 to SF12BW125
592 )))
593
594 (((
595 508.1 - SF7BW125 to SF12BW125
596 )))
597
598 (((
599 505.3 - SF12BW125 (RX2 downlink only)
600 )))
601
602
603
604 === 2.6.4  AU915-928(AU915) ===
605
606
607 (((
608 Default use CHE=2
609
610 (% style="color:blue" %)**Uplink:**
611
612 916.8 - SF7BW125 to SF12BW125
613
614 917.0 - SF7BW125 to SF12BW125
615
616 917.2 - SF7BW125 to SF12BW125
617
618 917.4 - SF7BW125 to SF12BW125
619
620 917.6 - SF7BW125 to SF12BW125
621
622 917.8 - SF7BW125 to SF12BW125
623
624 918.0 - SF7BW125 to SF12BW125
625
626 918.2 - SF7BW125 to SF12BW125
627
628
629 (% style="color:blue" %)**Downlink:**
630
631 923.3 - SF7BW500 to SF12BW500
632
633 923.9 - SF7BW500 to SF12BW500
634
635 924.5 - SF7BW500 to SF12BW500
636
637 925.1 - SF7BW500 to SF12BW500
638
639 925.7 - SF7BW500 to SF12BW500
640
641 926.3 - SF7BW500 to SF12BW500
642
643 926.9 - SF7BW500 to SF12BW500
644
645 927.5 - SF7BW500 to SF12BW500
646
647 923.3 - SF12BW500(RX2 downlink only)
648
649
650
651 )))
652
653 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
654
655
656 (((
657 (% style="color:blue" %)**Default Uplink channel:**
658 )))
659
660 (((
661 923.2 - SF7BW125 to SF10BW125
662 )))
663
664 (((
665 923.4 - SF7BW125 to SF10BW125
666 )))
667
668 (((
669
670 )))
671
672 (((
673 (% style="color:blue" %)**Additional Uplink Channel**:
674 )))
675
676 (((
677 (OTAA mode, channel added by JoinAccept message)
678 )))
679
680 (((
681
682 )))
683
684 (((
685 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
686 )))
687
688 (((
689 922.2 - SF7BW125 to SF10BW125
690 )))
691
692 (((
693 922.4 - SF7BW125 to SF10BW125
694 )))
695
696 (((
697 922.6 - SF7BW125 to SF10BW125
698 )))
699
700 (((
701 922.8 - SF7BW125 to SF10BW125
702 )))
703
704 (((
705 923.0 - SF7BW125 to SF10BW125
706 )))
707
708 (((
709 922.0 - SF7BW125 to SF10BW125
710 )))
711
712 (((
713
714 )))
715
716 (((
717 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
718 )))
719
720 (((
721 923.6 - SF7BW125 to SF10BW125
722 )))
723
724 (((
725 923.8 - SF7BW125 to SF10BW125
726 )))
727
728 (((
729 924.0 - SF7BW125 to SF10BW125
730 )))
731
732 (((
733 924.2 - SF7BW125 to SF10BW125
734 )))
735
736 (((
737 924.4 - SF7BW125 to SF10BW125
738 )))
739
740 (((
741 924.6 - SF7BW125 to SF10BW125
742 )))
743
744 (((
745
746 )))
747
748 (((
749 (% style="color:blue" %)**Downlink:**
750 )))
751
752 (((
753 Uplink channels 1-8 (RX1)
754 )))
755
756 (((
757 923.2 - SF10BW125 (RX2)
758 )))
759
760
761
762 === 2.6.6  KR920-923 (KR920) ===
763
764
765 (((
766 (% style="color:blue" %)**Default channel:**
767 )))
768
769 (((
770 922.1 - SF7BW125 to SF12BW125
771 )))
772
773 (((
774 922.3 - SF7BW125 to SF12BW125
775 )))
776
777 (((
778 922.5 - SF7BW125 to SF12BW125
779 )))
780
781 (((
782
783 )))
784
785 (((
786 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
787 )))
788
789 (((
790 922.1 - SF7BW125 to SF12BW125
791 )))
792
793 (((
794 922.3 - SF7BW125 to SF12BW125
795 )))
796
797 (((
798 922.5 - SF7BW125 to SF12BW125
799 )))
800
801 (((
802 922.7 - SF7BW125 to SF12BW125
803 )))
804
805 (((
806 922.9 - SF7BW125 to SF12BW125
807 )))
808
809 (((
810 923.1 - SF7BW125 to SF12BW125
811 )))
812
813 (((
814 923.3 - SF7BW125 to SF12BW125
815 )))
816
817 (((
818
819 )))
820
821 (((
822 (% style="color:blue" %)**Downlink:**
823 )))
824
825 (((
826 Uplink channels 1-7(RX1)
827 )))
828
829 (((
830 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
831 )))
832
833
834
835 === 2.6.7  IN865-867 (IN865) ===
836
837
838 (((
839 (% style="color:blue" %)**Uplink:**
840 )))
841
842 (((
843 865.0625 - SF7BW125 to SF12BW125
844 )))
845
846 (((
847 865.4025 - SF7BW125 to SF12BW125
848 )))
849
850 (((
851 865.9850 - SF7BW125 to SF12BW125
852 )))
853
854 (((
855
856 )))
857
858 (((
859 (% style="color:blue" %)**Downlink:**
860 )))
861
862 (((
863 Uplink channels 1-3 (RX1)
864 )))
865
866 (((
867 866.550 - SF10BW125 (RX2)
868 )))
869
870
871
872 == 2.7  LED Indicator ==
873
874
875 The LDDS75 has an internal LED which is to show the status of different state.
876
877
878 * Blink once when device power on.
879 * The device detects the sensor and flashes 5 times.
880 * Solid ON for 5 seconds once device successful Join the network.
881 * Blink once when device transmit a packet.
882
883
884
885 == 2.8  ​Firmware Change Log ==
886
887
888 (((
889 **Firmware download link:  **[[https:~~/~~/www.dropbox.com/sh/47fsmpbfv4qrw2d/AACy5NcU8MCMFVpYITSUfVLPa?dl=0>>https://www.dropbox.com/sh/47fsmpbfv4qrw2d/AACy5NcU8MCMFVpYITSUfVLPa?dl=0]]
890 )))
891
892 (((
893 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
894 )))
895
896
897
898 == 2.9  Mechanical ==
899
900
901 [[image:image-20220610172003-1.png]]
902
903
904 [[image:image-20220610172003-2.png]]
905
906
907
908 == 2.10  Battery Analysis ==
909
910
911 === 2.10.1  Battery Type ===
912
913
914 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.
915
916
917 The battery related documents as below:
918
919 * (((
920 [[Battery Dimension>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/]],
921 )))
922 * (((
923 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
924 )))
925 * (((
926 [[Lithium-ion Battery-Capacitor datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/]], [[Tech Spec>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/]]
927 )))
928
929 [[image:image-20220610172400-3.png]]
930
931
932
933 === 2.10.2  Replace the battery ===
934
935
936 (((
937 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.
938 )))
939
940 (((
941
942 )))
943
944 (((
945 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)
946 )))
947
948
949
950 = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
951
952
953 (((
954 (((
955 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
956 )))
957 )))
958
959 * (((
960 (((
961 AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
962 )))
963 )))
964 * (((
965 (((
966 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
967 )))
968 )))
969
970 (((
971 (((
972
973 )))
974
975 (((
976 There are two kinds of commands to configure LDDS75, they are:
977 )))
978 )))
979
980 * (((
981 (((
982 (% style="color:#4f81bd" %)** General Commands**.
983 )))
984 )))
985
986 (((
987 (((
988 These commands are to configure:
989 )))
990 )))
991
992 * (((
993 (((
994 General system settings like: uplink interval.
995 )))
996 )))
997 * (((
998 (((
999 LoRaWAN protocol & radio related command.
1000 )))
1001 )))
1002
1003 (((
1004 (((
1005 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]]
1006 )))
1007 )))
1008
1009 (((
1010 (((
1011
1012 )))
1013 )))
1014
1015 * (((
1016 (((
1017 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
1018 )))
1019 )))
1020
1021 (((
1022 (((
1023 These commands only valid for LDDS75, as below:
1024 )))
1025 )))
1026
1027
1028
1029 == 3.1  Access AT Commands ==
1030
1031
1032 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.
1033
1034 [[image:image-20220610172924-4.png||height="483" width="988"]]
1035
1036
1037 Or if you have below board, use below connection:
1038
1039
1040 [[image:image-20220610172924-5.png]]
1041
1042
1043 (((
1044 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:
1045 )))
1046
1047
1048 [[image:image-20220610172924-6.png||height="601" width="860"]]
1049
1050
1051
1052 == 3.2  Set Transmit Interval Time ==
1053
1054
1055 Feature: Change LoRaWAN End Node Transmit Interval.
1056
1057 (% style="color:#037691" %)**AT Command: AT+TDC**
1058
1059 [[image:image-20220610173409-7.png]]
1060
1061
1062 (((
1063 (% style="color:#037691" %)**Downlink Command: 0x01**
1064 )))
1065
1066 (((
1067 (((
1068 Format: Command Code (0x01) followed by 3 bytes time value.
1069
1070 (((
1071 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1072 )))
1073
1074 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1075 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1076 )))
1077 )))
1078
1079
1080
1081
1082 == 3.3  Set Interrupt Mode ==
1083
1084
1085 Feature, Set Interrupt mode for GPIO_EXIT.
1086
1087 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1088
1089 [[image:image-20220610174917-9.png]]
1090
1091
1092 (% style="color:#037691" %)**Downlink Command: 0x06**
1093
1094 Format: Command Code (0x06) followed by 3 bytes.
1095
1096 (((
1097 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1098 )))
1099
1100 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1101 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1102
1103
1104
1105 = 4.  FAQ =
1106
1107
1108 == 4.1  What is the frequency plan for LDDS75? ==
1109
1110
1111 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"]]
1112
1113
1114
1115 == 4.2  How to change the LoRa Frequency Bands/Region ==
1116
1117
1118 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1119 When downloading the images, choose the required image file for download. ​
1120
1121
1122
1123 == 4.3  Can I use LDDS75 in condensation environment? ==
1124
1125
1126 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1127
1128
1129
1130 = 5.  Trouble Shooting =
1131
1132
1133 == 5.1  Why I can't join TTN V3 in US915 / AU915 bands? ==
1134
1135
1136 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1137
1138
1139 == 5.2  AT Command input doesn't work ==
1140
1141
1142 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.
1143
1144 (((
1145
1146
1147 == 5.3 Why does the sensor reading show 0 or "No sensor" ==
1148
1149
1150 ~1. The measurement object is very close to the sensor, but in the blind spot of the sensor.
1151
1152 2. Sensor wiring is disconnected
1153
1154 3. Not using the correct sensor
1155 )))
1156
1157
1158 = 6.  Order Info =
1159
1160
1161 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1162
1163
1164 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1165
1166 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1167 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1168 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1169 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1170 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1171 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1172 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1173 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1174
1175 (% style="color:blue" %)**YY**(%%): Battery Option
1176
1177 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1178 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1179
1180
1181
1182 = 7. ​ Packing Info =
1183
1184
1185 **Package Includes**:
1186
1187 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1188
1189 **Dimension and weight**:
1190
1191 * Device Size: cm
1192 * Device Weight: g
1193 * Package Size / pcs : cm
1194 * Weight / pcs : g
1195
1196
1197
1198 = 8.  ​Support =
1199
1200
1201 * 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.
1202 * 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]].
1203
1204

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