Version 150.35 by Xiaoling on 2022/06/11 09:11
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1 (% style="text-align:center" %)
2 [[image:1654846127817-788.png]]
3
4 **Contents:**
5
6 {{toc/}}
7
8
9
10
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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 == 1.3  Specification ==
90
91 === 1.3.1  Rated environmental conditions ===
92
93 [[image:image-20220610154839-1.png]]
94
95 **Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
96
97 **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 === 1.3.2  Effective measurement range Reference beam pattern ===
102
103 **(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
104
105
106
107 [[image:1654852253176-749.png]]
108
109
110
111 **(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.**
112
113
114 [[image:1654852175653-550.png]](% style="display:none" %) ** **
115
116
117
118 == 1.5 ​ Applications ==
119
120 * Horizontal distance measurement
121 * Liquid level measurement
122 * Parking management system
123 * Object proximity and presence detection
124 * Intelligent trash can management system
125 * Robot obstacle avoidance
126 * Automatic control
127 * Sewer
128 * Bottom water level monitoring
129
130 == 1.6  Pin mapping and power on ==
131
132
133 [[image:1654847583902-256.png]]
134
135
136
137 = 2.  Configure LDDS75 to connect to LoRaWAN network =
138
139 == 2.1  How it works ==
140
141 (((
142 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
143 )))
144
145 (((
146 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.
147 )))
148
149
150
151 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
152
153 (((
154 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.
155 )))
156
157 (((
158 [[image:1654848616367-242.png]]
159 )))
160
161 (((
162 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.
163 )))
164
165 (((
166 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
167 )))
168
169 (((
170 Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
171 )))
172
173 [[image:image-20220607170145-1.jpeg]]
174
175
176 For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
177
178 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
179
180 **Add APP EUI in the application**
181
182 [[image:image-20220610161353-4.png]]
183
184 [[image:image-20220610161353-5.png]]
185
186 [[image:image-20220610161353-6.png]]
187
188
189 [[image:image-20220610161353-7.png]]
190
191
192 You can also choose to create the device manually.
193
194 [[image:image-20220610161538-8.png]]
195
196
197
198 **Add APP KEY and DEV EUI**
199
200 [[image:image-20220610161538-9.png]]
201
202
203
204 (% style="color:blue" %)**Step 2**(%%): Power on LDDS75
205
206
207 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
208
209 [[image:image-20220610161724-10.png]]
210
211
212 (((
213 (% 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.
214 )))
215
216 [[image:1654849068701-275.png]]
217
218
219
220 == 2.3  ​Uplink Payload ==
221
222 (((
223 LDDS75 will uplink payload via LoRaWAN with below payload format: 
224
225 Uplink payload includes in total 4 bytes.
226 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
227 )))
228
229 (((
230
231 )))
232
233 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
234 |=(% style="width: 62.5px;" %)(((
235 **Size (bytes)**
236 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
237 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
238 [[Distance>>||anchor="H2.3.2A0Distance"]]
239
240 (unit: mm)
241 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
242 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
243 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
244
245 [[image:1654850511545-399.png]]
246
247
248
249 === 2.3.1  Battery Info ===
250
251
252 Check the battery voltage for LDDS75.
253
254 Ex1: 0x0B45 = 2885mV
255
256 Ex2: 0x0B49 = 2889mV
257
258
259
260 === 2.3.2  Distance ===
261
262 Get the distance. Flat object range 280mm - 7500mm.
263
264 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.**
265
266
267 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
268 * 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.
269
270
271 === 2.3.3  Interrupt Pin ===
272
273 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.
274
275 **Example:**
276
277 0x00: Normal uplink packet.
278
279 0x01: Interrupt Uplink Packet.
280
281
282
283 === 2.3.4  DS18B20 Temperature sensor ===
284
285 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
286
287 **Example**:
288
289 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
290
291 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
292
293 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
294
295
296
297 === 2.3.5  Sensor Flag ===
298
299 0x01: Detect Ultrasonic Sensor
300
301 0x00: No Ultrasonic Sensor
302
303
304
305 === 2.3.6  Decode payload in The Things Network ===
306
307 While using TTN network, you can add the payload format to decode the payload.
308
309
310 [[image:1654850829385-439.png]]
311
312 The payload decoder function for TTN V3 is here:
313
314 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/]]
315
316
317
318 == 2.4  Uplink Interval ==
319
320 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"]]
321
322
323
324 == 2.5  ​Show Data in DataCake IoT Server ==
325
326 (((
327 [[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:
328 )))
329
330 (((
331
332 )))
333
334 (((
335 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
336 )))
337
338 (((
339 (% 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:**
340 )))
341
342
343 [[image:1654592790040-760.png]]
344
345
346 [[image:1654592800389-571.png]]
347
348
349 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
350
351 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
352
353 [[image:1654851029373-510.png]]
354
355
356 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
357
358 [[image:image-20220610165129-11.png||height="595" width="1088"]]
359
360
361
362 == 2.6  Frequency Plans ==
363
364 (((
365 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.
366 )))
367
368
369
370 === 2.6.1  EU863-870 (EU868) ===
371
372 (((
373 (% style="color:blue" %)**Uplink:**
374 )))
375
376 (((
377 868.1 - SF7BW125 to SF12BW125
378 )))
379
380 (((
381 868.3 - SF7BW125 to SF12BW125 and SF7BW250
382 )))
383
384 (((
385 868.5 - SF7BW125 to SF12BW125
386 )))
387
388 (((
389 867.1 - SF7BW125 to SF12BW125
390 )))
391
392 (((
393 867.3 - SF7BW125 to SF12BW125
394 )))
395
396 (((
397 867.5 - SF7BW125 to SF12BW125
398 )))
399
400 (((
401 867.7 - SF7BW125 to SF12BW125
402 )))
403
404 (((
405 867.9 - SF7BW125 to SF12BW125
406 )))
407
408 (((
409 868.8 - FSK
410 )))
411
412 (((
413
414 )))
415
416 (((
417 (% style="color:blue" %)**Downlink:**
418 )))
419
420 (((
421 Uplink channels 1-9 (RX1)
422 )))
423
424 (((
425 869.525 - SF9BW125 (RX2 downlink only)
426 )))
427
428
429
430 === 2.6.2  US902-928(US915) ===
431
432 (((
433 Used in USA, Canada and South America. Default use CHE=2
434
435 (% style="color:blue" %)**Uplink:**
436
437 903.9 - SF7BW125 to SF10BW125
438
439 904.1 - SF7BW125 to SF10BW125
440
441 904.3 - SF7BW125 to SF10BW125
442
443 904.5 - SF7BW125 to SF10BW125
444
445 904.7 - SF7BW125 to SF10BW125
446
447 904.9 - SF7BW125 to SF10BW125
448
449 905.1 - SF7BW125 to SF10BW125
450
451 905.3 - SF7BW125 to SF10BW125
452
453
454 (% style="color:blue" %)**Downlink:**
455
456 923.3 - SF7BW500 to SF12BW500
457
458 923.9 - SF7BW500 to SF12BW500
459
460 924.5 - SF7BW500 to SF12BW500
461
462 925.1 - SF7BW500 to SF12BW500
463
464 925.7 - SF7BW500 to SF12BW500
465
466 926.3 - SF7BW500 to SF12BW500
467
468 926.9 - SF7BW500 to SF12BW500
469
470 927.5 - SF7BW500 to SF12BW500
471
472 923.3 - SF12BW500(RX2 downlink only)
473
474
475
476 )))
477
478 === 2.6.3  CN470-510 (CN470) ===
479
480 (((
481 Used in China, Default use CHE=1
482 )))
483
484 (((
485 (% style="color:blue" %)**Uplink:**
486 )))
487
488 (((
489 486.3 - SF7BW125 to SF12BW125
490 )))
491
492 (((
493 486.5 - SF7BW125 to SF12BW125
494 )))
495
496 (((
497 486.7 - SF7BW125 to SF12BW125
498 )))
499
500 (((
501 486.9 - SF7BW125 to SF12BW125
502 )))
503
504 (((
505 487.1 - SF7BW125 to SF12BW125
506 )))
507
508 (((
509 487.3 - SF7BW125 to SF12BW125
510 )))
511
512 (((
513 487.5 - SF7BW125 to SF12BW125
514 )))
515
516 (((
517 487.7 - SF7BW125 to SF12BW125
518 )))
519
520 (((
521
522 )))
523
524 (((
525 (% style="color:blue" %)**Downlink:**
526 )))
527
528 (((
529 506.7 - SF7BW125 to SF12BW125
530 )))
531
532 (((
533 506.9 - SF7BW125 to SF12BW125
534 )))
535
536 (((
537 507.1 - SF7BW125 to SF12BW125
538 )))
539
540 (((
541 507.3 - SF7BW125 to SF12BW125
542 )))
543
544 (((
545 507.5 - SF7BW125 to SF12BW125
546 )))
547
548 (((
549 507.7 - SF7BW125 to SF12BW125
550 )))
551
552 (((
553 507.9 - SF7BW125 to SF12BW125
554 )))
555
556 (((
557 508.1 - SF7BW125 to SF12BW125
558 )))
559
560 (((
561 505.3 - SF12BW125 (RX2 downlink only)
562 )))
563
564
565
566 === 2.6.4  AU915-928(AU915) ===
567
568 (((
569 Default use CHE=2
570
571 (% style="color:blue" %)**Uplink:**
572
573 916.8 - SF7BW125 to SF12BW125
574
575 917.0 - SF7BW125 to SF12BW125
576
577 917.2 - SF7BW125 to SF12BW125
578
579 917.4 - SF7BW125 to SF12BW125
580
581 917.6 - SF7BW125 to SF12BW125
582
583 917.8 - SF7BW125 to SF12BW125
584
585 918.0 - SF7BW125 to SF12BW125
586
587 918.2 - SF7BW125 to SF12BW125
588
589
590 (% style="color:blue" %)**Downlink:**
591
592 923.3 - SF7BW500 to SF12BW500
593
594 923.9 - SF7BW500 to SF12BW500
595
596 924.5 - SF7BW500 to SF12BW500
597
598 925.1 - SF7BW500 to SF12BW500
599
600 925.7 - SF7BW500 to SF12BW500
601
602 926.3 - SF7BW500 to SF12BW500
603
604 926.9 - SF7BW500 to SF12BW500
605
606 927.5 - SF7BW500 to SF12BW500
607
608 923.3 - SF12BW500(RX2 downlink only)
609
610
611
612 )))
613
614 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
615
616 (((
617 (% style="color:blue" %)**Default Uplink channel:**
618 )))
619
620 (((
621 923.2 - SF7BW125 to SF10BW125
622 )))
623
624 (((
625 923.4 - SF7BW125 to SF10BW125
626 )))
627
628 (((
629
630 )))
631
632 (((
633 (% style="color:blue" %)**Additional Uplink Channel**:
634 )))
635
636 (((
637 (OTAA mode, channel added by JoinAccept message)
638 )))
639
640 (((
641
642 )))
643
644 (((
645 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
646 )))
647
648 (((
649 922.2 - SF7BW125 to SF10BW125
650 )))
651
652 (((
653 922.4 - SF7BW125 to SF10BW125
654 )))
655
656 (((
657 922.6 - SF7BW125 to SF10BW125
658 )))
659
660 (((
661 922.8 - SF7BW125 to SF10BW125
662 )))
663
664 (((
665 923.0 - SF7BW125 to SF10BW125
666 )))
667
668 (((
669 922.0 - SF7BW125 to SF10BW125
670 )))
671
672 (((
673
674 )))
675
676 (((
677 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
678 )))
679
680 (((
681 923.6 - SF7BW125 to SF10BW125
682 )))
683
684 (((
685 923.8 - SF7BW125 to SF10BW125
686 )))
687
688 (((
689 924.0 - SF7BW125 to SF10BW125
690 )))
691
692 (((
693 924.2 - SF7BW125 to SF10BW125
694 )))
695
696 (((
697 924.4 - SF7BW125 to SF10BW125
698 )))
699
700 (((
701 924.6 - SF7BW125 to SF10BW125
702 )))
703
704 (((
705
706 )))
707
708 (((
709 (% style="color:blue" %)**Downlink:**
710 )))
711
712 (((
713 Uplink channels 1-8 (RX1)
714 )))
715
716 (((
717 923.2 - SF10BW125 (RX2)
718 )))
719
720
721
722 === 2.6.6  KR920-923 (KR920) ===
723
724 (((
725 (% style="color:blue" %)**Default channel:**
726 )))
727
728 (((
729 922.1 - SF7BW125 to SF12BW125
730 )))
731
732 (((
733 922.3 - SF7BW125 to SF12BW125
734 )))
735
736 (((
737 922.5 - SF7BW125 to SF12BW125
738 )))
739
740 (((
741
742 )))
743
744 (((
745 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
746 )))
747
748 (((
749 922.1 - SF7BW125 to SF12BW125
750 )))
751
752 (((
753 922.3 - SF7BW125 to SF12BW125
754 )))
755
756 (((
757 922.5 - SF7BW125 to SF12BW125
758 )))
759
760 (((
761 922.7 - SF7BW125 to SF12BW125
762 )))
763
764 (((
765 922.9 - SF7BW125 to SF12BW125
766 )))
767
768 (((
769 923.1 - SF7BW125 to SF12BW125
770 )))
771
772 (((
773 923.3 - SF7BW125 to SF12BW125
774 )))
775
776 (((
777
778 )))
779
780 (((
781 (% style="color:blue" %)**Downlink:**
782 )))
783
784 (((
785 Uplink channels 1-7(RX1)
786 )))
787
788 (((
789 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
790 )))
791
792
793
794 === 2.6.7  IN865-867 (IN865) ===
795
796 (((
797 (% style="color:blue" %)**Uplink:**
798 )))
799
800 (((
801 865.0625 - SF7BW125 to SF12BW125
802 )))
803
804 (((
805 865.4025 - SF7BW125 to SF12BW125
806 )))
807
808 (((
809 865.9850 - SF7BW125 to SF12BW125
810 )))
811
812 (((
813
814 )))
815
816 (((
817 (% style="color:blue" %)**Downlink:**
818 )))
819
820 (((
821 Uplink channels 1-3 (RX1)
822 )))
823
824 (((
825 866.550 - SF10BW125 (RX2)
826 )))
827
828
829
830 == 2.7  LED Indicator ==
831
832 The LDDS75 has an internal LED which is to show the status of different state.
833
834
835 * Blink once when device power on.
836 * The device detects the sensor and flashes 5 times.
837 * Solid ON for 5 seconds once device successful Join the network.
838 * Blink once when device transmit a packet.
839
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
1045 = 4.  FAQ =
1046
1047 == 4.1  What is the frequency plan for LDDS75? ==
1048
1049 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"]]
1050
1051
1052
1053 == 4.2  How to change the LoRa Frequency Bands/Region ==
1054
1055 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1056 When downloading the images, choose the required image file for download. ​
1057
1058
1059
1060 == 4.3  Can I use LDDS75 in condensation environment? ==
1061
1062 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1063
1064
1065
1066 = 5.  Trouble Shooting =
1067
1068 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1069
1070 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1071
1072
1073 == 5.2  AT Command input doesn't work ==
1074
1075 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.
1076
1077 (((
1078
1079 )))
1080
1081
1082 = 6.  Order Info =
1083
1084
1085 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1086
1087
1088 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1089
1090 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1091 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1092 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1093 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1094 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1095 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1096 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1097 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1098
1099 (% style="color:blue" %)**YY**(%%): Battery Option
1100
1101 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1102 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1103
1104
1105
1106 = 7. ​ Packing Info =
1107
1108
1109 **Package Includes**:
1110
1111 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1112
1113 **Dimension and weight**:
1114
1115 * Device Size: cm
1116 * Device Weight: g
1117 * Package Size / pcs : cm
1118 * Weight / pcs : g
1119
1120
1121
1122 = 8.  ​Support =
1123
1124 * 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.
1125 * 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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