Version 150.37 by Xiaoling on 2022/06/11 09:13
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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
91 == 1.3  Specification ==
92
93 === 1.3.1  Rated environmental conditions ===
94
95 [[image:image-20220610154839-1.png]]
96
97 (((
98 **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)**
99 )))
100
101
102
103 === 1.3.2  Effective measurement range Reference beam pattern ===
104
105 **(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
106
107
108
109 [[image:1654852253176-749.png]]
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 [[image:1654852175653-550.png]](% style="display:none" %) ** **
117
118
119
120 == 1.5 ​ Applications ==
121
122 * Horizontal distance measurement
123 * Liquid level measurement
124 * Parking management system
125 * Object proximity and presence detection
126 * Intelligent trash can management system
127 * Robot obstacle avoidance
128 * Automatic control
129 * Sewer
130 * Bottom water level monitoring
131
132 == 1.6  Pin mapping and power on ==
133
134
135 [[image:1654847583902-256.png]]
136
137
138
139 = 2.  Configure LDDS75 to connect to LoRaWAN network =
140
141 == 2.1  How it works ==
142
143 (((
144 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
145 )))
146
147 (((
148 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.
149 )))
150
151
152
153 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
154
155 (((
156 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.
157 )))
158
159 (((
160 [[image:1654848616367-242.png]]
161 )))
162
163 (((
164 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.
165 )))
166
167 (((
168 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
169 )))
170
171 (((
172 Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
173 )))
174
175 [[image:image-20220607170145-1.jpeg]]
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 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
181
182 **Add APP EUI in the application**
183
184 [[image:image-20220610161353-4.png]]
185
186 [[image:image-20220610161353-5.png]]
187
188 [[image:image-20220610161353-6.png]]
189
190
191 [[image:image-20220610161353-7.png]]
192
193
194 You can also choose to create the device manually.
195
196 [[image:image-20220610161538-8.png]]
197
198
199
200 **Add APP KEY and DEV EUI**
201
202 [[image:image-20220610161538-9.png]]
203
204
205
206 (% style="color:blue" %)**Step 2**(%%): Power on LDDS75
207
208
209 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
210
211 [[image:image-20220610161724-10.png]]
212
213
214 (((
215 (% 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.
216 )))
217
218 [[image:1654849068701-275.png]]
219
220
221
222 == 2.3  ​Uplink Payload ==
223
224 (((
225 LDDS75 will uplink payload via LoRaWAN with below payload format: 
226
227 Uplink payload includes in total 4 bytes.
228 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
229 )))
230
231 (((
232
233 )))
234
235 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
236 |=(% style="width: 62.5px;" %)(((
237 **Size (bytes)**
238 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
239 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
240 [[Distance>>||anchor="H2.3.2A0Distance"]]
241
242 (unit: mm)
243 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
244 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
245 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
246
247 [[image:1654850511545-399.png]]
248
249
250
251 === 2.3.1  Battery Info ===
252
253
254 Check the battery voltage for LDDS75.
255
256 Ex1: 0x0B45 = 2885mV
257
258 Ex2: 0x0B49 = 2889mV
259
260
261
262 === 2.3.2  Distance ===
263
264 Get the distance. Flat object range 280mm - 7500mm.
265
266 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.**
267
268
269 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
270 * 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.
271
272 === 2.3.3  Interrupt Pin ===
273
274 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.
275
276 **Example:**
277
278 0x00: Normal uplink packet.
279
280 0x01: Interrupt Uplink Packet.
281
282
283
284 === 2.3.4  DS18B20 Temperature sensor ===
285
286 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
287
288 **Example**:
289
290 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
291
292 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
293
294 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
295
296
297
298 === 2.3.5  Sensor Flag ===
299
300 0x01: Detect Ultrasonic Sensor
301
302 0x00: No Ultrasonic Sensor
303
304
305
306 === 2.3.6  Decode payload in The Things Network ===
307
308 While using TTN network, you can add the payload format to decode the payload.
309
310
311 [[image:1654850829385-439.png]]
312
313 The payload decoder function for TTN V3 is here:
314
315 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/]]
316
317
318
319 == 2.4  Uplink Interval ==
320
321 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"]]
322
323
324
325 == 2.5  ​Show Data in DataCake IoT Server ==
326
327 (((
328 [[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:
329 )))
330
331 (((
332
333 )))
334
335 (((
336 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
337 )))
338
339 (((
340 (% 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:**
341 )))
342
343
344 [[image:1654592790040-760.png]]
345
346
347 [[image:1654592800389-571.png]]
348
349
350 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
351
352 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
353
354 [[image:1654851029373-510.png]]
355
356
357 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
358
359 [[image:image-20220610165129-11.png||height="595" width="1088"]]
360
361
362
363 == 2.6  Frequency Plans ==
364
365 (((
366 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.
367 )))
368
369
370
371 === 2.6.1  EU863-870 (EU868) ===
372
373 (((
374 (% style="color:blue" %)**Uplink:**
375 )))
376
377 (((
378 868.1 - SF7BW125 to SF12BW125
379 )))
380
381 (((
382 868.3 - SF7BW125 to SF12BW125 and SF7BW250
383 )))
384
385 (((
386 868.5 - SF7BW125 to SF12BW125
387 )))
388
389 (((
390 867.1 - SF7BW125 to SF12BW125
391 )))
392
393 (((
394 867.3 - SF7BW125 to SF12BW125
395 )))
396
397 (((
398 867.5 - SF7BW125 to SF12BW125
399 )))
400
401 (((
402 867.7 - SF7BW125 to SF12BW125
403 )))
404
405 (((
406 867.9 - SF7BW125 to SF12BW125
407 )))
408
409 (((
410 868.8 - FSK
411 )))
412
413 (((
414
415 )))
416
417 (((
418 (% style="color:blue" %)**Downlink:**
419 )))
420
421 (((
422 Uplink channels 1-9 (RX1)
423 )))
424
425 (((
426 869.525 - SF9BW125 (RX2 downlink only)
427 )))
428
429
430
431 === 2.6.2  US902-928(US915) ===
432
433 (((
434 Used in USA, Canada and South America. Default use CHE=2
435
436 (% style="color:blue" %)**Uplink:**
437
438 903.9 - SF7BW125 to SF10BW125
439
440 904.1 - SF7BW125 to SF10BW125
441
442 904.3 - SF7BW125 to SF10BW125
443
444 904.5 - SF7BW125 to SF10BW125
445
446 904.7 - SF7BW125 to SF10BW125
447
448 904.9 - SF7BW125 to SF10BW125
449
450 905.1 - SF7BW125 to SF10BW125
451
452 905.3 - SF7BW125 to SF10BW125
453
454
455 (% style="color:blue" %)**Downlink:**
456
457 923.3 - SF7BW500 to SF12BW500
458
459 923.9 - SF7BW500 to SF12BW500
460
461 924.5 - SF7BW500 to SF12BW500
462
463 925.1 - SF7BW500 to SF12BW500
464
465 925.7 - SF7BW500 to SF12BW500
466
467 926.3 - SF7BW500 to SF12BW500
468
469 926.9 - SF7BW500 to SF12BW500
470
471 927.5 - SF7BW500 to SF12BW500
472
473 923.3 - SF12BW500(RX2 downlink only)
474
475
476
477 )))
478
479 === 2.6.3  CN470-510 (CN470) ===
480
481 (((
482 Used in China, Default use CHE=1
483 )))
484
485 (((
486 (% style="color:blue" %)**Uplink:**
487 )))
488
489 (((
490 486.3 - SF7BW125 to SF12BW125
491 )))
492
493 (((
494 486.5 - SF7BW125 to SF12BW125
495 )))
496
497 (((
498 486.7 - SF7BW125 to SF12BW125
499 )))
500
501 (((
502 486.9 - SF7BW125 to SF12BW125
503 )))
504
505 (((
506 487.1 - SF7BW125 to SF12BW125
507 )))
508
509 (((
510 487.3 - SF7BW125 to SF12BW125
511 )))
512
513 (((
514 487.5 - SF7BW125 to SF12BW125
515 )))
516
517 (((
518 487.7 - SF7BW125 to SF12BW125
519 )))
520
521 (((
522
523 )))
524
525 (((
526 (% style="color:blue" %)**Downlink:**
527 )))
528
529 (((
530 506.7 - SF7BW125 to SF12BW125
531 )))
532
533 (((
534 506.9 - SF7BW125 to SF12BW125
535 )))
536
537 (((
538 507.1 - SF7BW125 to SF12BW125
539 )))
540
541 (((
542 507.3 - SF7BW125 to SF12BW125
543 )))
544
545 (((
546 507.5 - SF7BW125 to SF12BW125
547 )))
548
549 (((
550 507.7 - SF7BW125 to SF12BW125
551 )))
552
553 (((
554 507.9 - SF7BW125 to SF12BW125
555 )))
556
557 (((
558 508.1 - SF7BW125 to SF12BW125
559 )))
560
561 (((
562 505.3 - SF12BW125 (RX2 downlink only)
563 )))
564
565
566
567 === 2.6.4  AU915-928(AU915) ===
568
569 (((
570 Default use CHE=2
571
572 (% style="color:blue" %)**Uplink:**
573
574 916.8 - SF7BW125 to SF12BW125
575
576 917.0 - SF7BW125 to SF12BW125
577
578 917.2 - SF7BW125 to SF12BW125
579
580 917.4 - SF7BW125 to SF12BW125
581
582 917.6 - SF7BW125 to SF12BW125
583
584 917.8 - SF7BW125 to SF12BW125
585
586 918.0 - SF7BW125 to SF12BW125
587
588 918.2 - SF7BW125 to SF12BW125
589
590
591 (% style="color:blue" %)**Downlink:**
592
593 923.3 - SF7BW500 to SF12BW500
594
595 923.9 - SF7BW500 to SF12BW500
596
597 924.5 - SF7BW500 to SF12BW500
598
599 925.1 - SF7BW500 to SF12BW500
600
601 925.7 - SF7BW500 to SF12BW500
602
603 926.3 - SF7BW500 to SF12BW500
604
605 926.9 - SF7BW500 to SF12BW500
606
607 927.5 - SF7BW500 to SF12BW500
608
609 923.3 - SF12BW500(RX2 downlink only)
610
611
612
613 )))
614
615 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
616
617 (((
618 (% style="color:blue" %)**Default Uplink channel:**
619 )))
620
621 (((
622 923.2 - SF7BW125 to SF10BW125
623 )))
624
625 (((
626 923.4 - SF7BW125 to SF10BW125
627 )))
628
629 (((
630
631 )))
632
633 (((
634 (% style="color:blue" %)**Additional Uplink Channel**:
635 )))
636
637 (((
638 (OTAA mode, channel added by JoinAccept message)
639 )))
640
641 (((
642
643 )))
644
645 (((
646 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
647 )))
648
649 (((
650 922.2 - SF7BW125 to SF10BW125
651 )))
652
653 (((
654 922.4 - SF7BW125 to SF10BW125
655 )))
656
657 (((
658 922.6 - SF7BW125 to SF10BW125
659 )))
660
661 (((
662 922.8 - SF7BW125 to SF10BW125
663 )))
664
665 (((
666 923.0 - SF7BW125 to SF10BW125
667 )))
668
669 (((
670 922.0 - SF7BW125 to SF10BW125
671 )))
672
673 (((
674
675 )))
676
677 (((
678 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
679 )))
680
681 (((
682 923.6 - SF7BW125 to SF10BW125
683 )))
684
685 (((
686 923.8 - SF7BW125 to SF10BW125
687 )))
688
689 (((
690 924.0 - SF7BW125 to SF10BW125
691 )))
692
693 (((
694 924.2 - SF7BW125 to SF10BW125
695 )))
696
697 (((
698 924.4 - SF7BW125 to SF10BW125
699 )))
700
701 (((
702 924.6 - SF7BW125 to SF10BW125
703 )))
704
705 (((
706
707 )))
708
709 (((
710 (% style="color:blue" %)**Downlink:**
711 )))
712
713 (((
714 Uplink channels 1-8 (RX1)
715 )))
716
717 (((
718 923.2 - SF10BW125 (RX2)
719 )))
720
721
722
723 === 2.6.6  KR920-923 (KR920) ===
724
725 (((
726 (% style="color:blue" %)**Default channel:**
727 )))
728
729 (((
730 922.1 - SF7BW125 to SF12BW125
731 )))
732
733 (((
734 922.3 - SF7BW125 to SF12BW125
735 )))
736
737 (((
738 922.5 - SF7BW125 to SF12BW125
739 )))
740
741 (((
742
743 )))
744
745 (((
746 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
747 )))
748
749 (((
750 922.1 - SF7BW125 to SF12BW125
751 )))
752
753 (((
754 922.3 - SF7BW125 to SF12BW125
755 )))
756
757 (((
758 922.5 - SF7BW125 to SF12BW125
759 )))
760
761 (((
762 922.7 - SF7BW125 to SF12BW125
763 )))
764
765 (((
766 922.9 - SF7BW125 to SF12BW125
767 )))
768
769 (((
770 923.1 - SF7BW125 to SF12BW125
771 )))
772
773 (((
774 923.3 - SF7BW125 to SF12BW125
775 )))
776
777 (((
778
779 )))
780
781 (((
782 (% style="color:blue" %)**Downlink:**
783 )))
784
785 (((
786 Uplink channels 1-7(RX1)
787 )))
788
789 (((
790 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
791 )))
792
793
794
795 === 2.6.7  IN865-867 (IN865) ===
796
797 (((
798 (% style="color:blue" %)**Uplink:**
799 )))
800
801 (((
802 865.0625 - SF7BW125 to SF12BW125
803 )))
804
805 (((
806 865.4025 - SF7BW125 to SF12BW125
807 )))
808
809 (((
810 865.9850 - SF7BW125 to SF12BW125
811 )))
812
813 (((
814
815 )))
816
817 (((
818 (% style="color:blue" %)**Downlink:**
819 )))
820
821 (((
822 Uplink channels 1-3 (RX1)
823 )))
824
825 (((
826 866.550 - SF10BW125 (RX2)
827 )))
828
829
830
831 == 2.7  LED Indicator ==
832
833 The LDDS75 has an internal LED which is to show the status of different state.
834
835
836 * Blink once when device power on.
837 * The device detects the sensor and flashes 5 times.
838 * Solid ON for 5 seconds once device successful Join the network.
839 * Blink once when device transmit a packet.
840
841 == 2.8  ​Firmware Change Log ==
842
843
844 **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/]]
845
846
847 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
848
849
850
851 == 2.9  Mechanical ==
852
853
854 [[image:image-20220610172003-1.png]]
855
856
857 [[image:image-20220610172003-2.png]]
858
859
860
861 == 2.10  Battery Analysis ==
862
863 === 2.10.1  Battery Type ===
864
865 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.
866
867
868 The battery related documents as below:
869
870 * (((
871 [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
872 )))
873 * (((
874 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
875 )))
876 * (((
877 [[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]]
878 )))
879
880 [[image:image-20220610172400-3.png]]
881
882
883
884 === 2.10.2  Replace the battery ===
885
886 (((
887 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.
888 )))
889
890 (((
891
892 )))
893
894 (((
895 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)
896 )))
897
898
899
900 = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
901
902 (((
903 (((
904 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
905 )))
906 )))
907
908 * (((
909 (((
910 AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
911 )))
912 )))
913 * (((
914 (((
915 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
916 )))
917 )))
918
919 (((
920 (((
921
922 )))
923
924 (((
925 There are two kinds of commands to configure LDDS75, they are:
926 )))
927 )))
928
929 * (((
930 (((
931 (% style="color:#4f81bd" %)** General Commands**.
932 )))
933 )))
934
935 (((
936 (((
937 These commands are to configure:
938 )))
939 )))
940
941 * (((
942 (((
943 General system settings like: uplink interval.
944 )))
945 )))
946 * (((
947 (((
948 LoRaWAN protocol & radio related command.
949 )))
950 )))
951
952 (((
953 (((
954 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]]
955 )))
956 )))
957
958 (((
959 (((
960
961 )))
962 )))
963
964 * (((
965 (((
966 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
967 )))
968 )))
969
970 (((
971 (((
972 These commands only valid for LDDS75, as below:
973 )))
974 )))
975
976
977
978 == 3.1  Access AT Commands ==
979
980 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.
981
982 [[image:image-20220610172924-4.png||height="483" width="988"]]
983
984
985 Or if you have below board, use below connection:
986
987
988 [[image:image-20220610172924-5.png]]
989
990
991 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:
992
993
994 [[image:image-20220610172924-6.png||height="601" width="860"]]
995
996
997
998 == 3.2  Set Transmit Interval Time ==
999
1000 Feature: Change LoRaWAN End Node Transmit Interval.
1001
1002 (% style="color:#037691" %)**AT Command: AT+TDC**
1003
1004 [[image:image-20220610173409-7.png]]
1005
1006
1007 (((
1008 (% style="color:#037691" %)**Downlink Command: 0x01**
1009 )))
1010
1011 (((
1012 (((
1013 Format: Command Code (0x01) followed by 3 bytes time value.
1014
1015 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1016
1017 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1018 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1019 )))
1020
1021
1022
1023 )))
1024
1025 == 3.3  Set Interrupt Mode ==
1026
1027 Feature, Set Interrupt mode for GPIO_EXIT.
1028
1029 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1030
1031 [[image:image-20220610174917-9.png]]
1032
1033
1034 (% style="color:#037691" %)**Downlink Command: 0x06**
1035
1036 Format: Command Code (0x06) followed by 3 bytes.
1037
1038 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1039
1040 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1041 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1042
1043
1044 = 4.  FAQ =
1045
1046 == 4.1  What is the frequency plan for LDDS75? ==
1047
1048 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"]]
1049
1050
1051
1052 == 4.2  How to change the LoRa Frequency Bands/Region ==
1053
1054 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1055 When downloading the images, choose the required image file for download. ​
1056
1057
1058
1059 == 4.3  Can I use LDDS75 in condensation environment? ==
1060
1061 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1062
1063
1064
1065 = 5.  Trouble Shooting =
1066
1067 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1068
1069 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1070
1071
1072 == 5.2  AT Command input doesn't work ==
1073
1074 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.
1075
1076 (((
1077
1078 )))
1079
1080
1081 = 6.  Order Info =
1082
1083
1084 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1085
1086
1087 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1088
1089 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1090 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1091 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1092 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1093 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1094 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1095 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1096 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1097
1098 (% style="color:blue" %)**YY**(%%): Battery Option
1099
1100 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1101 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1102
1103
1104 = 7. ​ Packing Info =
1105
1106
1107 **Package Includes**:
1108
1109 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1110
1111 **Dimension and weight**:
1112
1113 * Device Size: cm
1114 * Device Weight: g
1115 * Package Size / pcs : cm
1116 * Weight / pcs : g
1117
1118
1119 = 8.  ​Support =
1120
1121 * 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.
1122 * 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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