Skip to Content
Version 153.18 by Xiaoling on 2022/10/13 17:26
Show last authors
1 (% style="text-align:center" %)
2 [[image:1654846127817-788.png]]
3
4
5
6
7
8 **Table of Contents:**
9
10 {{toc/}}
11
12
13
14
15
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 * LoRaWAN 1.0.3 Class A
61 * Ultra low power consumption
62 * Distance Detection by Ultrasonic technology
63 * Flat object range 280mm - 7500mm
64 * Accuracy: ±(1cm+S*0.3%) (S: Distance)
65 * Cable Length : 25cm
66 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
67 * AT Commands to change parameters
68 * Uplink on periodically
69 * Downlink to change configure
70 * IP66 Waterproof Enclosure
71 * 4000mAh or 8500mAh Battery for long term use
72
73
74
75 == 1.3  Specification ==
76
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 === 2.3.3  Interrupt Pin ===
293
294
295 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.
296
297 **Example:**
298
299 0x00: Normal uplink packet.
300
301 0x01: Interrupt Uplink Packet.
302
303
304
305 === 2.3.4  DS18B20 Temperature sensor ===
306
307
308 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
309
310 **Example**:
311
312 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
313
314 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
315
316 (% style="color:red" %)**Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.**
317
318
319
320 === 2.3.5  Sensor Flag ===
321
322
323 (((
324 0x01: Detect Ultrasonic Sensor
325 )))
326
327 (((
328 0x00: No Ultrasonic Sensor
329 )))
330
331
332
333 === 2.3.6  Decode payload in The Things Network ===
334
335
336 While using TTN network, you can add the payload format to decode the payload.
337
338
339 [[image:1654850829385-439.png]]
340
341 The payload decoder function for TTN V3 is here:
342
343 (((
344 LDDS75 TTN V3 Payload Decoder:  [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
345 )))
346
347
348
349 == 2.4  Uplink Interval ==
350
351
352 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"]]
353
354
355
356 == 2.5  ​Show Data in DataCake IoT Server ==
357
358
359 (((
360 [[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:
361 )))
362
363 (((
364
365 )))
366
367 (((
368 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
369 )))
370
371 (((
372 (% 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:**
373 )))
374
375
376 [[image:1654592790040-760.png]]
377
378
379 [[image:1654592800389-571.png]]
380
381
382 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
383
384 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
385
386 [[image:1654851029373-510.png]]
387
388
389 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
390
391 [[image:image-20220610165129-11.png||height="595" width="1088"]]
392
393
394
395 == 2.6  Frequency Plans ==
396
397
398 (((
399 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.
400 )))
401
402
403
404 === 2.6.1  EU863-870 (EU868) ===
405
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 (((
469 Used in USA, Canada and South America. Default use CHE=2
470
471 (% style="color:blue" %)**Uplink:**
472
473 903.9 - SF7BW125 to SF10BW125
474
475 904.1 - SF7BW125 to SF10BW125
476
477 904.3 - SF7BW125 to SF10BW125
478
479 904.5 - SF7BW125 to SF10BW125
480
481 904.7 - SF7BW125 to SF10BW125
482
483 904.9 - SF7BW125 to SF10BW125
484
485 905.1 - SF7BW125 to SF10BW125
486
487 905.3 - SF7BW125 to SF10BW125
488
489
490 (% style="color:blue" %)**Downlink:**
491
492 923.3 - SF7BW500 to SF12BW500
493
494 923.9 - SF7BW500 to SF12BW500
495
496 924.5 - SF7BW500 to SF12BW500
497
498 925.1 - SF7BW500 to SF12BW500
499
500 925.7 - SF7BW500 to SF12BW500
501
502 926.3 - SF7BW500 to SF12BW500
503
504 926.9 - SF7BW500 to SF12BW500
505
506 927.5 - SF7BW500 to SF12BW500
507
508 923.3 - SF12BW500(RX2 downlink only)
509
510
511
512 )))
513
514 === 2.6.3  CN470-510 (CN470) ===
515
516
517 (((
518 Used in China, Default use CHE=1
519 )))
520
521 (((
522 (% style="color:blue" %)**Uplink:**
523 )))
524
525 (((
526 486.3 - SF7BW125 to SF12BW125
527 )))
528
529 (((
530 486.5 - SF7BW125 to SF12BW125
531 )))
532
533 (((
534 486.7 - SF7BW125 to SF12BW125
535 )))
536
537 (((
538 486.9 - SF7BW125 to SF12BW125
539 )))
540
541 (((
542 487.1 - SF7BW125 to SF12BW125
543 )))
544
545 (((
546 487.3 - SF7BW125 to SF12BW125
547 )))
548
549 (((
550 487.5 - SF7BW125 to SF12BW125
551 )))
552
553 (((
554 487.7 - SF7BW125 to SF12BW125
555 )))
556
557 (((
558
559 )))
560
561 (((
562 (% style="color:blue" %)**Downlink:**
563 )))
564
565 (((
566 506.7 - SF7BW125 to SF12BW125
567 )))
568
569 (((
570 506.9 - SF7BW125 to SF12BW125
571 )))
572
573 (((
574 507.1 - SF7BW125 to SF12BW125
575 )))
576
577 (((
578 507.3 - SF7BW125 to SF12BW125
579 )))
580
581 (((
582 507.5 - SF7BW125 to SF12BW125
583 )))
584
585 (((
586 507.7 - SF7BW125 to SF12BW125
587 )))
588
589 (((
590 507.9 - SF7BW125 to SF12BW125
591 )))
592
593 (((
594 508.1 - SF7BW125 to SF12BW125
595 )))
596
597 (((
598 505.3 - SF12BW125 (RX2 downlink only)
599 )))
600
601
602
603 === 2.6.4  AU915-928(AU915) ===
604
605
606 (((
607 Default use CHE=2
608
609 (% style="color:blue" %)**Uplink:**
610
611 916.8 - SF7BW125 to SF12BW125
612
613 917.0 - SF7BW125 to SF12BW125
614
615 917.2 - SF7BW125 to SF12BW125
616
617 917.4 - SF7BW125 to SF12BW125
618
619 917.6 - SF7BW125 to SF12BW125
620
621 917.8 - SF7BW125 to SF12BW125
622
623 918.0 - SF7BW125 to SF12BW125
624
625 918.2 - SF7BW125 to SF12BW125
626
627
628 (% style="color:blue" %)**Downlink:**
629
630 923.3 - SF7BW500 to SF12BW500
631
632 923.9 - SF7BW500 to SF12BW500
633
634 924.5 - SF7BW500 to SF12BW500
635
636 925.1 - SF7BW500 to SF12BW500
637
638 925.7 - SF7BW500 to SF12BW500
639
640 926.3 - SF7BW500 to SF12BW500
641
642 926.9 - SF7BW500 to SF12BW500
643
644 927.5 - SF7BW500 to SF12BW500
645
646 923.3 - SF12BW500(RX2 downlink only)
647
648
649
650 )))
651
652 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
653
654
655 (((
656 (% style="color:blue" %)**Default Uplink channel:**
657 )))
658
659 (((
660 923.2 - SF7BW125 to SF10BW125
661 )))
662
663 (((
664 923.4 - SF7BW125 to SF10BW125
665 )))
666
667 (((
668
669 )))
670
671 (((
672 (% style="color:blue" %)**Additional Uplink Channel**:
673 )))
674
675 (((
676 (OTAA mode, channel added by JoinAccept message)
677 )))
678
679 (((
680
681 )))
682
683 (((
684 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
685 )))
686
687 (((
688 922.2 - SF7BW125 to SF10BW125
689 )))
690
691 (((
692 922.4 - SF7BW125 to SF10BW125
693 )))
694
695 (((
696 922.6 - SF7BW125 to SF10BW125
697 )))
698
699 (((
700 922.8 - SF7BW125 to SF10BW125
701 )))
702
703 (((
704 923.0 - SF7BW125 to SF10BW125
705 )))
706
707 (((
708 922.0 - SF7BW125 to SF10BW125
709 )))
710
711 (((
712
713 )))
714
715 (((
716 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
717 )))
718
719 (((
720 923.6 - SF7BW125 to SF10BW125
721 )))
722
723 (((
724 923.8 - SF7BW125 to SF10BW125
725 )))
726
727 (((
728 924.0 - SF7BW125 to SF10BW125
729 )))
730
731 (((
732 924.2 - SF7BW125 to SF10BW125
733 )))
734
735 (((
736 924.4 - SF7BW125 to SF10BW125
737 )))
738
739 (((
740 924.6 - SF7BW125 to SF10BW125
741 )))
742
743 (((
744
745 )))
746
747 (((
748 (% style="color:blue" %)**Downlink:**
749 )))
750
751 (((
752 Uplink channels 1-8 (RX1)
753 )))
754
755 (((
756 923.2 - SF10BW125 (RX2)
757 )))
758
759
760
761 === 2.6.6  KR920-923 (KR920) ===
762
763
764 (((
765 (% style="color:blue" %)**Default channel:**
766 )))
767
768 (((
769 922.1 - SF7BW125 to SF12BW125
770 )))
771
772 (((
773 922.3 - SF7BW125 to SF12BW125
774 )))
775
776 (((
777 922.5 - SF7BW125 to SF12BW125
778 )))
779
780 (((
781
782 )))
783
784 (((
785 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
786 )))
787
788 (((
789 922.1 - SF7BW125 to SF12BW125
790 )))
791
792 (((
793 922.3 - SF7BW125 to SF12BW125
794 )))
795
796 (((
797 922.5 - SF7BW125 to SF12BW125
798 )))
799
800 (((
801 922.7 - SF7BW125 to SF12BW125
802 )))
803
804 (((
805 922.9 - SF7BW125 to SF12BW125
806 )))
807
808 (((
809 923.1 - SF7BW125 to SF12BW125
810 )))
811
812 (((
813 923.3 - SF7BW125 to SF12BW125
814 )))
815
816 (((
817
818 )))
819
820 (((
821 (% style="color:blue" %)**Downlink:**
822 )))
823
824 (((
825 Uplink channels 1-7(RX1)
826 )))
827
828 (((
829 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
830 )))
831
832
833
834 === 2.6.7  IN865-867 (IN865) ===
835
836
837 (((
838 (% style="color:blue" %)**Uplink:**
839 )))
840
841 (((
842 865.0625 - SF7BW125 to SF12BW125
843 )))
844
845 (((
846 865.4025 - SF7BW125 to SF12BW125
847 )))
848
849 (((
850 865.9850 - SF7BW125 to SF12BW125
851 )))
852
853 (((
854
855 )))
856
857 (((
858 (% style="color:blue" %)**Downlink:**
859 )))
860
861 (((
862 Uplink channels 1-3 (RX1)
863 )))
864
865 (((
866 866.550 - SF10BW125 (RX2)
867 )))
868
869
870
871 == 2.7  LED Indicator ==
872
873
874 The LDDS75 has an internal LED which is to show the status of different state.
875
876
877 * Blink once when device power on.
878 * The device detects the sensor and flashes 5 times.
879 * Solid ON for 5 seconds once device successful Join the network.
880 * Blink once when device transmit a packet.
881
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
1106 = 4.  FAQ =
1107
1108
1109 == 4.1  What is the frequency plan for LDDS75? ==
1110
1111
1112 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"]]
1113
1114
1115
1116 == 4.2  How to change the LoRa Frequency Bands/Region ==
1117
1118
1119 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1120 When downloading the images, choose the required image file for download. ​
1121
1122
1123
1124 == 4.3  Can I use LDDS75 in condensation environment? ==
1125
1126
1127 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1128
1129
1130
1131 = 5.  Trouble Shooting =
1132
1133
1134 == 5.1  Why I can't join TTN V3 in US915 / AU915 bands? ==
1135
1136
1137 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1138
1139
1140
1141 == 5.2  AT Command input doesn't work ==
1142
1143
1144 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.
1145
1146 (((
1147
1148 )))
1149
1150
1151 = 6.  Order Info =
1152
1153
1154 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1155
1156
1157 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1158
1159 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1160 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1161 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1162 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1163 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1164 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1165 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1166 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1167
1168 (% style="color:blue" %)**YY**(%%): Battery Option
1169
1170 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1171 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1172
1173
1174
1175
1176 = 7. ​ Packing Info =
1177
1178
1179 **Package Includes**:
1180
1181 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1182
1183 **Dimension and weight**:
1184
1185 * Device Size: cm
1186 * Device Weight: g
1187 * Package Size / pcs : cm
1188 * Weight / pcs : g
1189
1190
1191
1192
1193 = 8.  ​Support =
1194
1195
1196 * 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.
1197 * 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]].
1198
1199