Version 150.47 by Xiaoling on 2022/06/11 09:17
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1 (% style="text-align:center" %)
2 [[image:1654846127817-788.png]]
3
4 **Contents:**
5
6 {{toc/}}
7
8
9
10
11
12
13
14
15 = 1.  Introduction =
16
17 == 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
18
19 (((
20
21
22 (((
23 (((
24 The Dragino 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 Get the distance. Flat object range 280mm - 7500mm.
278
279 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.**
280
281
282 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
283 * 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.
284
285 === 2.3.3  Interrupt Pin ===
286
287 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.
288
289 **Example:**
290
291 0x00: Normal uplink packet.
292
293 0x01: Interrupt Uplink Packet.
294
295
296
297 === 2.3.4  DS18B20 Temperature sensor ===
298
299 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
300
301 **Example**:
302
303 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
304
305 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
306
307 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
308
309
310
311 === 2.3.5  Sensor Flag ===
312
313 0x01: Detect Ultrasonic Sensor
314
315 0x00: No Ultrasonic Sensor
316
317
318
319 === 2.3.6  Decode payload in The Things Network ===
320
321 While using TTN network, you can add the payload format to decode the payload.
322
323
324 [[image:1654850829385-439.png]]
325
326 The payload decoder function for TTN V3 is here:
327
328 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/]]
329
330
331
332 == 2.4  Uplink Interval ==
333
334 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"]]
335
336
337
338 == 2.5  ​Show Data in DataCake IoT Server ==
339
340 (((
341 [[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:
342 )))
343
344 (((
345
346 )))
347
348 (((
349 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
350 )))
351
352 (((
353 (% 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:**
354 )))
355
356
357 [[image:1654592790040-760.png]]
358
359
360 [[image:1654592800389-571.png]]
361
362
363 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
364
365 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
366
367 [[image:1654851029373-510.png]]
368
369
370 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
371
372 [[image:image-20220610165129-11.png||height="595" width="1088"]]
373
374
375
376 == 2.6  Frequency Plans ==
377
378 (((
379 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.
380 )))
381
382
383
384 === 2.6.1  EU863-870 (EU868) ===
385
386 (((
387 (% style="color:blue" %)**Uplink:**
388 )))
389
390 (((
391 868.1 - SF7BW125 to SF12BW125
392 )))
393
394 (((
395 868.3 - SF7BW125 to SF12BW125 and SF7BW250
396 )))
397
398 (((
399 868.5 - SF7BW125 to SF12BW125
400 )))
401
402 (((
403 867.1 - SF7BW125 to SF12BW125
404 )))
405
406 (((
407 867.3 - SF7BW125 to SF12BW125
408 )))
409
410 (((
411 867.5 - SF7BW125 to SF12BW125
412 )))
413
414 (((
415 867.7 - SF7BW125 to SF12BW125
416 )))
417
418 (((
419 867.9 - SF7BW125 to SF12BW125
420 )))
421
422 (((
423 868.8 - FSK
424 )))
425
426 (((
427
428 )))
429
430 (((
431 (% style="color:blue" %)**Downlink:**
432 )))
433
434 (((
435 Uplink channels 1-9 (RX1)
436 )))
437
438 (((
439 869.525 - SF9BW125 (RX2 downlink only)
440 )))
441
442
443
444 === 2.6.2  US902-928(US915) ===
445
446 (((
447 Used in USA, Canada and South America. Default use CHE=2
448
449 (% style="color:blue" %)**Uplink:**
450
451 903.9 - SF7BW125 to SF10BW125
452
453 904.1 - SF7BW125 to SF10BW125
454
455 904.3 - SF7BW125 to SF10BW125
456
457 904.5 - SF7BW125 to SF10BW125
458
459 904.7 - SF7BW125 to SF10BW125
460
461 904.9 - SF7BW125 to SF10BW125
462
463 905.1 - SF7BW125 to SF10BW125
464
465 905.3 - SF7BW125 to SF10BW125
466
467
468 (% style="color:blue" %)**Downlink:**
469
470 923.3 - SF7BW500 to SF12BW500
471
472 923.9 - SF7BW500 to SF12BW500
473
474 924.5 - SF7BW500 to SF12BW500
475
476 925.1 - SF7BW500 to SF12BW500
477
478 925.7 - SF7BW500 to SF12BW500
479
480 926.3 - SF7BW500 to SF12BW500
481
482 926.9 - SF7BW500 to SF12BW500
483
484 927.5 - SF7BW500 to SF12BW500
485
486 923.3 - SF12BW500(RX2 downlink only)
487
488
489
490 )))
491
492 === 2.6.3  CN470-510 (CN470) ===
493
494 (((
495 Used in China, Default use CHE=1
496 )))
497
498 (((
499 (% style="color:blue" %)**Uplink:**
500 )))
501
502 (((
503 486.3 - SF7BW125 to SF12BW125
504 )))
505
506 (((
507 486.5 - SF7BW125 to SF12BW125
508 )))
509
510 (((
511 486.7 - SF7BW125 to SF12BW125
512 )))
513
514 (((
515 486.9 - SF7BW125 to SF12BW125
516 )))
517
518 (((
519 487.1 - SF7BW125 to SF12BW125
520 )))
521
522 (((
523 487.3 - SF7BW125 to SF12BW125
524 )))
525
526 (((
527 487.5 - SF7BW125 to SF12BW125
528 )))
529
530 (((
531 487.7 - SF7BW125 to SF12BW125
532 )))
533
534 (((
535
536 )))
537
538 (((
539 (% style="color:blue" %)**Downlink:**
540 )))
541
542 (((
543 506.7 - SF7BW125 to SF12BW125
544 )))
545
546 (((
547 506.9 - SF7BW125 to SF12BW125
548 )))
549
550 (((
551 507.1 - SF7BW125 to SF12BW125
552 )))
553
554 (((
555 507.3 - SF7BW125 to SF12BW125
556 )))
557
558 (((
559 507.5 - SF7BW125 to SF12BW125
560 )))
561
562 (((
563 507.7 - SF7BW125 to SF12BW125
564 )))
565
566 (((
567 507.9 - SF7BW125 to SF12BW125
568 )))
569
570 (((
571 508.1 - SF7BW125 to SF12BW125
572 )))
573
574 (((
575 505.3 - SF12BW125 (RX2 downlink only)
576 )))
577
578
579
580 === 2.6.4  AU915-928(AU915) ===
581
582 (((
583 Default use CHE=2
584
585 (% style="color:blue" %)**Uplink:**
586
587 916.8 - SF7BW125 to SF12BW125
588
589 917.0 - SF7BW125 to SF12BW125
590
591 917.2 - SF7BW125 to SF12BW125
592
593 917.4 - SF7BW125 to SF12BW125
594
595 917.6 - SF7BW125 to SF12BW125
596
597 917.8 - SF7BW125 to SF12BW125
598
599 918.0 - SF7BW125 to SF12BW125
600
601 918.2 - SF7BW125 to SF12BW125
602
603
604 (% style="color:blue" %)**Downlink:**
605
606 923.3 - SF7BW500 to SF12BW500
607
608 923.9 - SF7BW500 to SF12BW500
609
610 924.5 - SF7BW500 to SF12BW500
611
612 925.1 - SF7BW500 to SF12BW500
613
614 925.7 - SF7BW500 to SF12BW500
615
616 926.3 - SF7BW500 to SF12BW500
617
618 926.9 - SF7BW500 to SF12BW500
619
620 927.5 - SF7BW500 to SF12BW500
621
622 923.3 - SF12BW500(RX2 downlink only)
623
624
625
626 )))
627
628 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
629
630 (((
631 (% style="color:blue" %)**Default Uplink channel:**
632 )))
633
634 (((
635 923.2 - SF7BW125 to SF10BW125
636 )))
637
638 (((
639 923.4 - SF7BW125 to SF10BW125
640 )))
641
642 (((
643
644 )))
645
646 (((
647 (% style="color:blue" %)**Additional Uplink Channel**:
648 )))
649
650 (((
651 (OTAA mode, channel added by JoinAccept message)
652 )))
653
654 (((
655
656 )))
657
658 (((
659 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
660 )))
661
662 (((
663 922.2 - SF7BW125 to SF10BW125
664 )))
665
666 (((
667 922.4 - SF7BW125 to SF10BW125
668 )))
669
670 (((
671 922.6 - SF7BW125 to SF10BW125
672 )))
673
674 (((
675 922.8 - SF7BW125 to SF10BW125
676 )))
677
678 (((
679 923.0 - SF7BW125 to SF10BW125
680 )))
681
682 (((
683 922.0 - SF7BW125 to SF10BW125
684 )))
685
686 (((
687
688 )))
689
690 (((
691 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
692 )))
693
694 (((
695 923.6 - SF7BW125 to SF10BW125
696 )))
697
698 (((
699 923.8 - SF7BW125 to SF10BW125
700 )))
701
702 (((
703 924.0 - SF7BW125 to SF10BW125
704 )))
705
706 (((
707 924.2 - SF7BW125 to SF10BW125
708 )))
709
710 (((
711 924.4 - SF7BW125 to SF10BW125
712 )))
713
714 (((
715 924.6 - SF7BW125 to SF10BW125
716 )))
717
718 (((
719
720 )))
721
722 (((
723 (% style="color:blue" %)**Downlink:**
724 )))
725
726 (((
727 Uplink channels 1-8 (RX1)
728 )))
729
730 (((
731 923.2 - SF10BW125 (RX2)
732 )))
733
734
735
736 === 2.6.6  KR920-923 (KR920) ===
737
738 (((
739 (% style="color:blue" %)**Default channel:**
740 )))
741
742 (((
743 922.1 - SF7BW125 to SF12BW125
744 )))
745
746 (((
747 922.3 - SF7BW125 to SF12BW125
748 )))
749
750 (((
751 922.5 - SF7BW125 to SF12BW125
752 )))
753
754 (((
755
756 )))
757
758 (((
759 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
760 )))
761
762 (((
763 922.1 - SF7BW125 to SF12BW125
764 )))
765
766 (((
767 922.3 - SF7BW125 to SF12BW125
768 )))
769
770 (((
771 922.5 - SF7BW125 to SF12BW125
772 )))
773
774 (((
775 922.7 - SF7BW125 to SF12BW125
776 )))
777
778 (((
779 922.9 - SF7BW125 to SF12BW125
780 )))
781
782 (((
783 923.1 - SF7BW125 to SF12BW125
784 )))
785
786 (((
787 923.3 - SF7BW125 to SF12BW125
788 )))
789
790 (((
791
792 )))
793
794 (((
795 (% style="color:blue" %)**Downlink:**
796 )))
797
798 (((
799 Uplink channels 1-7(RX1)
800 )))
801
802 (((
803 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
804 )))
805
806
807
808 === 2.6.7  IN865-867 (IN865) ===
809
810 (((
811 (% style="color:blue" %)**Uplink:**
812 )))
813
814 (((
815 865.0625 - SF7BW125 to SF12BW125
816 )))
817
818 (((
819 865.4025 - SF7BW125 to SF12BW125
820 )))
821
822 (((
823 865.9850 - SF7BW125 to SF12BW125
824 )))
825
826 (((
827
828 )))
829
830 (((
831 (% style="color:blue" %)**Downlink:**
832 )))
833
834 (((
835 Uplink channels 1-3 (RX1)
836 )))
837
838 (((
839 866.550 - SF10BW125 (RX2)
840 )))
841
842
843
844 == 2.7  LED Indicator ==
845
846 The LDDS75 has an internal LED which is to show the status of different state.
847
848
849 * Blink once when device power on.
850 * The device detects the sensor and flashes 5 times.
851 * Solid ON for 5 seconds once device successful Join the network.
852 * Blink once when device transmit a packet.
853
854 == 2.8  ​Firmware Change Log ==
855
856
857 **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/]]
858
859
860 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
861
862
863
864 == 2.9  Mechanical ==
865
866
867 [[image:image-20220610172003-1.png]]
868
869
870 [[image:image-20220610172003-2.png]]
871
872
873
874 == 2.10  Battery Analysis ==
875
876 === 2.10.1  Battery Type ===
877
878 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.
879
880
881 The battery related documents as below:
882
883 * (((
884 [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
885 )))
886 * (((
887 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
888 )))
889 * (((
890 [[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]]
891 )))
892
893 [[image:image-20220610172400-3.png]]
894
895
896
897 === 2.10.2  Replace the battery ===
898
899 (((
900 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.
901 )))
902
903 (((
904
905 )))
906
907 (((
908 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)
909 )))
910
911
912
913 = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
914
915 (((
916 (((
917 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
918 )))
919 )))
920
921 * (((
922 (((
923 AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
924 )))
925 )))
926 * (((
927 (((
928 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
929 )))
930 )))
931
932 (((
933 (((
934
935 )))
936
937 (((
938 There are two kinds of commands to configure LDDS75, they are:
939 )))
940 )))
941
942 * (((
943 (((
944 (% style="color:#4f81bd" %)** General Commands**.
945 )))
946 )))
947
948 (((
949 (((
950 These commands are to configure:
951 )))
952 )))
953
954 * (((
955 (((
956 General system settings like: uplink interval.
957 )))
958 )))
959 * (((
960 (((
961 LoRaWAN protocol & radio related command.
962 )))
963 )))
964
965 (((
966 (((
967 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]]
968 )))
969 )))
970
971 (((
972 (((
973
974 )))
975 )))
976
977 * (((
978 (((
979 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
980 )))
981 )))
982
983 (((
984 (((
985 These commands only valid for LDDS75, as below:
986 )))
987 )))
988
989
990
991 == 3.1  Access AT Commands ==
992
993 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.
994
995 [[image:image-20220610172924-4.png||height="483" width="988"]]
996
997
998 Or if you have below board, use below connection:
999
1000
1001 [[image:image-20220610172924-5.png]]
1002
1003
1004 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:
1005
1006
1007 [[image:image-20220610172924-6.png||height="601" width="860"]]
1008
1009
1010
1011 == 3.2  Set Transmit Interval Time ==
1012
1013 Feature: Change LoRaWAN End Node Transmit Interval.
1014
1015 (% style="color:#037691" %)**AT Command: AT+TDC**
1016
1017 [[image:image-20220610173409-7.png]]
1018
1019
1020 (((
1021 (% style="color:#037691" %)**Downlink Command: 0x01**
1022 )))
1023
1024 (((
1025 (((
1026 Format: Command Code (0x01) followed by 3 bytes time value.
1027
1028 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1029
1030 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1031 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1032 )))
1033
1034
1035
1036 )))
1037
1038 == 3.3  Set Interrupt Mode ==
1039
1040 Feature, Set Interrupt mode for GPIO_EXIT.
1041
1042 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1043
1044 [[image:image-20220610174917-9.png]]
1045
1046
1047 (% style="color:#037691" %)**Downlink Command: 0x06**
1048
1049 Format: Command Code (0x06) followed by 3 bytes.
1050
1051 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1052
1053 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1054 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1055
1056 = 4.  FAQ =
1057
1058 == 4.1  What is the frequency plan for LDDS75? ==
1059
1060 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"]]
1061
1062
1063
1064 == 4.2  How to change the LoRa Frequency Bands/Region ==
1065
1066 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1067 When downloading the images, choose the required image file for download. ​
1068
1069
1070
1071 == 4.3  Can I use LDDS75 in condensation environment? ==
1072
1073 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1074
1075
1076
1077 = 5.  Trouble Shooting =
1078
1079 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1080
1081 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1082
1083
1084 == 5.2  AT Command input doesn't work ==
1085
1086 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.
1087
1088 (((
1089
1090 )))
1091
1092
1093 = 6.  Order Info =
1094
1095
1096 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1097
1098
1099 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1100
1101 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1102 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1103 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1104 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1105 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1106 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1107 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1108 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1109
1110 (% style="color:blue" %)**YY**(%%): Battery Option
1111
1112 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1113 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1114
1115 = 7. ​ Packing Info =
1116
1117
1118 **Package Includes**:
1119
1120 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1121
1122 **Dimension and weight**:
1123
1124 * Device Size: cm
1125 * Device Weight: g
1126 * Package Size / pcs : cm
1127 * Weight / pcs : g
1128
1129 = 8.  ​Support =
1130
1131 * 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.
1132 * 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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