Version 150.42 by Xiaoling on 2022/06/11 09:14
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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
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 **(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.**
113
114
115 [[image:1654852175653-550.png]](% style="display:none" %) ** **
116
117
118
119 == 1.5 ​ Applications ==
120
121 * Horizontal distance measurement
122 * Liquid level measurement
123 * Parking management system
124 * Object proximity and presence detection
125 * Intelligent trash can management system
126 * Robot obstacle avoidance
127 * Automatic control
128 * Sewer
129 * Bottom water level monitoring
130
131
132
133 == 1.6  Pin mapping and power on ==
134
135
136 [[image:1654847583902-256.png]]
137
138
139
140 = 2.  Configure LDDS75 to connect to LoRaWAN network =
141
142 == 2.1  How it works ==
143
144 (((
145 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
146 )))
147
148 (((
149 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.
150 )))
151
152
153
154 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
155
156 (((
157 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.
158 )))
159
160 (((
161 [[image:1654848616367-242.png]]
162 )))
163
164 (((
165 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.
166 )))
167
168 (((
169 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
170 )))
171
172 (((
173 Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
174 )))
175
176 [[image:image-20220607170145-1.jpeg]]
177
178
179 For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
180
181 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
182
183 **Add APP EUI in the application**
184
185 [[image:image-20220610161353-4.png]]
186
187 [[image:image-20220610161353-5.png]]
188
189 [[image:image-20220610161353-6.png]]
190
191
192 [[image:image-20220610161353-7.png]]
193
194
195 You can also choose to create the device manually.
196
197 [[image:image-20220610161538-8.png]]
198
199
200
201 **Add APP KEY and DEV EUI**
202
203 [[image:image-20220610161538-9.png]]
204
205
206
207 (% style="color:blue" %)**Step 2**(%%): Power on LDDS75
208
209
210 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
211
212 [[image:image-20220610161724-10.png]]
213
214
215 (((
216 (% 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.
217 )))
218
219 [[image:1654849068701-275.png]]
220
221
222
223 == 2.3  ​Uplink Payload ==
224
225 (((
226 LDDS75 will uplink payload via LoRaWAN with below payload format: 
227
228 Uplink payload includes in total 4 bytes.
229 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
230 )))
231
232 (((
233
234 )))
235
236 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
237 |=(% style="width: 62.5px;" %)(((
238 **Size (bytes)**
239 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
240 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
241 [[Distance>>||anchor="H2.3.2A0Distance"]]
242
243 (unit: mm)
244 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
245 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
246 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
247
248 [[image:1654850511545-399.png]]
249
250
251
252 === 2.3.1  Battery Info ===
253
254
255 Check the battery voltage for LDDS75.
256
257 Ex1: 0x0B45 = 2885mV
258
259 Ex2: 0x0B49 = 2889mV
260
261
262
263 === 2.3.2  Distance ===
264
265 Get the distance. Flat object range 280mm - 7500mm.
266
267 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.**
268
269
270 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
271 * 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.
272
273 === 2.3.3  Interrupt Pin ===
274
275 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.
276
277 **Example:**
278
279 0x00: Normal uplink packet.
280
281 0x01: Interrupt Uplink Packet.
282
283
284
285 === 2.3.4  DS18B20 Temperature sensor ===
286
287 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
288
289 **Example**:
290
291 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
292
293 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
294
295 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
296
297
298
299 === 2.3.5  Sensor Flag ===
300
301 0x01: Detect Ultrasonic Sensor
302
303 0x00: No Ultrasonic Sensor
304
305
306
307 === 2.3.6  Decode payload in The Things Network ===
308
309 While using TTN network, you can add the payload format to decode the payload.
310
311
312 [[image:1654850829385-439.png]]
313
314 The payload decoder function for TTN V3 is here:
315
316 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/]]
317
318
319
320 == 2.4  Uplink Interval ==
321
322 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"]]
323
324
325
326 == 2.5  ​Show Data in DataCake IoT Server ==
327
328 (((
329 [[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:
330 )))
331
332 (((
333
334 )))
335
336 (((
337 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
338 )))
339
340 (((
341 (% 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:**
342 )))
343
344
345 [[image:1654592790040-760.png]]
346
347
348 [[image:1654592800389-571.png]]
349
350
351 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
352
353 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
354
355 [[image:1654851029373-510.png]]
356
357
358 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
359
360 [[image:image-20220610165129-11.png||height="595" width="1088"]]
361
362
363
364 == 2.6  Frequency Plans ==
365
366 (((
367 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.
368 )))
369
370
371
372 === 2.6.1  EU863-870 (EU868) ===
373
374 (((
375 (% style="color:blue" %)**Uplink:**
376 )))
377
378 (((
379 868.1 - SF7BW125 to SF12BW125
380 )))
381
382 (((
383 868.3 - SF7BW125 to SF12BW125 and SF7BW250
384 )))
385
386 (((
387 868.5 - SF7BW125 to SF12BW125
388 )))
389
390 (((
391 867.1 - SF7BW125 to SF12BW125
392 )))
393
394 (((
395 867.3 - SF7BW125 to SF12BW125
396 )))
397
398 (((
399 867.5 - SF7BW125 to SF12BW125
400 )))
401
402 (((
403 867.7 - SF7BW125 to SF12BW125
404 )))
405
406 (((
407 867.9 - SF7BW125 to SF12BW125
408 )))
409
410 (((
411 868.8 - FSK
412 )))
413
414 (((
415
416 )))
417
418 (((
419 (% style="color:blue" %)**Downlink:**
420 )))
421
422 (((
423 Uplink channels 1-9 (RX1)
424 )))
425
426 (((
427 869.525 - SF9BW125 (RX2 downlink only)
428 )))
429
430
431
432 === 2.6.2  US902-928(US915) ===
433
434 (((
435 Used in USA, Canada and South America. Default use CHE=2
436
437 (% style="color:blue" %)**Uplink:**
438
439 903.9 - SF7BW125 to SF10BW125
440
441 904.1 - SF7BW125 to SF10BW125
442
443 904.3 - SF7BW125 to SF10BW125
444
445 904.5 - SF7BW125 to SF10BW125
446
447 904.7 - SF7BW125 to SF10BW125
448
449 904.9 - SF7BW125 to SF10BW125
450
451 905.1 - SF7BW125 to SF10BW125
452
453 905.3 - SF7BW125 to SF10BW125
454
455
456 (% style="color:blue" %)**Downlink:**
457
458 923.3 - SF7BW500 to SF12BW500
459
460 923.9 - SF7BW500 to SF12BW500
461
462 924.5 - SF7BW500 to SF12BW500
463
464 925.1 - SF7BW500 to SF12BW500
465
466 925.7 - SF7BW500 to SF12BW500
467
468 926.3 - SF7BW500 to SF12BW500
469
470 926.9 - SF7BW500 to SF12BW500
471
472 927.5 - SF7BW500 to SF12BW500
473
474 923.3 - SF12BW500(RX2 downlink only)
475
476
477
478 )))
479
480 === 2.6.3  CN470-510 (CN470) ===
481
482 (((
483 Used in China, Default use CHE=1
484 )))
485
486 (((
487 (% style="color:blue" %)**Uplink:**
488 )))
489
490 (((
491 486.3 - SF7BW125 to SF12BW125
492 )))
493
494 (((
495 486.5 - SF7BW125 to SF12BW125
496 )))
497
498 (((
499 486.7 - SF7BW125 to SF12BW125
500 )))
501
502 (((
503 486.9 - SF7BW125 to SF12BW125
504 )))
505
506 (((
507 487.1 - SF7BW125 to SF12BW125
508 )))
509
510 (((
511 487.3 - SF7BW125 to SF12BW125
512 )))
513
514 (((
515 487.5 - SF7BW125 to SF12BW125
516 )))
517
518 (((
519 487.7 - SF7BW125 to SF12BW125
520 )))
521
522 (((
523
524 )))
525
526 (((
527 (% style="color:blue" %)**Downlink:**
528 )))
529
530 (((
531 506.7 - SF7BW125 to SF12BW125
532 )))
533
534 (((
535 506.9 - SF7BW125 to SF12BW125
536 )))
537
538 (((
539 507.1 - SF7BW125 to SF12BW125
540 )))
541
542 (((
543 507.3 - SF7BW125 to SF12BW125
544 )))
545
546 (((
547 507.5 - SF7BW125 to SF12BW125
548 )))
549
550 (((
551 507.7 - SF7BW125 to SF12BW125
552 )))
553
554 (((
555 507.9 - SF7BW125 to SF12BW125
556 )))
557
558 (((
559 508.1 - SF7BW125 to SF12BW125
560 )))
561
562 (((
563 505.3 - SF12BW125 (RX2 downlink only)
564 )))
565
566
567
568 === 2.6.4  AU915-928(AU915) ===
569
570 (((
571 Default use CHE=2
572
573 (% style="color:blue" %)**Uplink:**
574
575 916.8 - SF7BW125 to SF12BW125
576
577 917.0 - SF7BW125 to SF12BW125
578
579 917.2 - SF7BW125 to SF12BW125
580
581 917.4 - SF7BW125 to SF12BW125
582
583 917.6 - SF7BW125 to SF12BW125
584
585 917.8 - SF7BW125 to SF12BW125
586
587 918.0 - SF7BW125 to SF12BW125
588
589 918.2 - SF7BW125 to SF12BW125
590
591
592 (% style="color:blue" %)**Downlink:**
593
594 923.3 - SF7BW500 to SF12BW500
595
596 923.9 - SF7BW500 to SF12BW500
597
598 924.5 - SF7BW500 to SF12BW500
599
600 925.1 - SF7BW500 to SF12BW500
601
602 925.7 - SF7BW500 to SF12BW500
603
604 926.3 - SF7BW500 to SF12BW500
605
606 926.9 - SF7BW500 to SF12BW500
607
608 927.5 - SF7BW500 to SF12BW500
609
610 923.3 - SF12BW500(RX2 downlink only)
611
612
613
614 )))
615
616 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
617
618 (((
619 (% style="color:blue" %)**Default Uplink channel:**
620 )))
621
622 (((
623 923.2 - SF7BW125 to SF10BW125
624 )))
625
626 (((
627 923.4 - SF7BW125 to SF10BW125
628 )))
629
630 (((
631
632 )))
633
634 (((
635 (% style="color:blue" %)**Additional Uplink Channel**:
636 )))
637
638 (((
639 (OTAA mode, channel added by JoinAccept message)
640 )))
641
642 (((
643
644 )))
645
646 (((
647 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
648 )))
649
650 (((
651 922.2 - SF7BW125 to SF10BW125
652 )))
653
654 (((
655 922.4 - SF7BW125 to SF10BW125
656 )))
657
658 (((
659 922.6 - SF7BW125 to SF10BW125
660 )))
661
662 (((
663 922.8 - SF7BW125 to SF10BW125
664 )))
665
666 (((
667 923.0 - SF7BW125 to SF10BW125
668 )))
669
670 (((
671 922.0 - SF7BW125 to SF10BW125
672 )))
673
674 (((
675
676 )))
677
678 (((
679 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
680 )))
681
682 (((
683 923.6 - SF7BW125 to SF10BW125
684 )))
685
686 (((
687 923.8 - SF7BW125 to SF10BW125
688 )))
689
690 (((
691 924.0 - SF7BW125 to SF10BW125
692 )))
693
694 (((
695 924.2 - SF7BW125 to SF10BW125
696 )))
697
698 (((
699 924.4 - SF7BW125 to SF10BW125
700 )))
701
702 (((
703 924.6 - SF7BW125 to SF10BW125
704 )))
705
706 (((
707
708 )))
709
710 (((
711 (% style="color:blue" %)**Downlink:**
712 )))
713
714 (((
715 Uplink channels 1-8 (RX1)
716 )))
717
718 (((
719 923.2 - SF10BW125 (RX2)
720 )))
721
722
723
724 === 2.6.6  KR920-923 (KR920) ===
725
726 (((
727 (% style="color:blue" %)**Default channel:**
728 )))
729
730 (((
731 922.1 - SF7BW125 to SF12BW125
732 )))
733
734 (((
735 922.3 - SF7BW125 to SF12BW125
736 )))
737
738 (((
739 922.5 - SF7BW125 to SF12BW125
740 )))
741
742 (((
743
744 )))
745
746 (((
747 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
748 )))
749
750 (((
751 922.1 - SF7BW125 to SF12BW125
752 )))
753
754 (((
755 922.3 - SF7BW125 to SF12BW125
756 )))
757
758 (((
759 922.5 - SF7BW125 to SF12BW125
760 )))
761
762 (((
763 922.7 - SF7BW125 to SF12BW125
764 )))
765
766 (((
767 922.9 - SF7BW125 to SF12BW125
768 )))
769
770 (((
771 923.1 - SF7BW125 to SF12BW125
772 )))
773
774 (((
775 923.3 - SF7BW125 to SF12BW125
776 )))
777
778 (((
779
780 )))
781
782 (((
783 (% style="color:blue" %)**Downlink:**
784 )))
785
786 (((
787 Uplink channels 1-7(RX1)
788 )))
789
790 (((
791 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
792 )))
793
794
795
796 === 2.6.7  IN865-867 (IN865) ===
797
798 (((
799 (% style="color:blue" %)**Uplink:**
800 )))
801
802 (((
803 865.0625 - SF7BW125 to SF12BW125
804 )))
805
806 (((
807 865.4025 - SF7BW125 to SF12BW125
808 )))
809
810 (((
811 865.9850 - SF7BW125 to SF12BW125
812 )))
813
814 (((
815
816 )))
817
818 (((
819 (% style="color:blue" %)**Downlink:**
820 )))
821
822 (((
823 Uplink channels 1-3 (RX1)
824 )))
825
826 (((
827 866.550 - SF10BW125 (RX2)
828 )))
829
830
831
832 == 2.7  LED Indicator ==
833
834 The LDDS75 has an internal LED which is to show the status of different state.
835
836
837 * Blink once when device power on.
838 * The device detects the sensor and flashes 5 times.
839 * Solid ON for 5 seconds once device successful Join the network.
840 * Blink once when device transmit a packet.
841
842 == 2.8  ​Firmware Change Log ==
843
844
845 **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/]]
846
847
848 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
849
850
851
852 == 2.9  Mechanical ==
853
854
855 [[image:image-20220610172003-1.png]]
856
857
858 [[image:image-20220610172003-2.png]]
859
860
861
862 == 2.10  Battery Analysis ==
863
864 === 2.10.1  Battery Type ===
865
866 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.
867
868
869 The battery related documents as below:
870
871 * (((
872 [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
873 )))
874 * (((
875 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
876 )))
877 * (((
878 [[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]]
879 )))
880
881 [[image:image-20220610172400-3.png]]
882
883
884
885 === 2.10.2  Replace the battery ===
886
887 (((
888 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.
889 )))
890
891 (((
892
893 )))
894
895 (((
896 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)
897 )))
898
899
900
901 = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
902
903 (((
904 (((
905 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
906 )))
907 )))
908
909 * (((
910 (((
911 AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
912 )))
913 )))
914 * (((
915 (((
916 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
917 )))
918 )))
919
920 (((
921 (((
922
923 )))
924
925 (((
926 There are two kinds of commands to configure LDDS75, they are:
927 )))
928 )))
929
930 * (((
931 (((
932 (% style="color:#4f81bd" %)** General Commands**.
933 )))
934 )))
935
936 (((
937 (((
938 These commands are to configure:
939 )))
940 )))
941
942 * (((
943 (((
944 General system settings like: uplink interval.
945 )))
946 )))
947 * (((
948 (((
949 LoRaWAN protocol & radio related command.
950 )))
951 )))
952
953 (((
954 (((
955 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]]
956 )))
957 )))
958
959 (((
960 (((
961
962 )))
963 )))
964
965 * (((
966 (((
967 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
968 )))
969 )))
970
971 (((
972 (((
973 These commands only valid for LDDS75, as below:
974 )))
975 )))
976
977
978
979 == 3.1  Access AT Commands ==
980
981 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.
982
983 [[image:image-20220610172924-4.png||height="483" width="988"]]
984
985
986 Or if you have below board, use below connection:
987
988
989 [[image:image-20220610172924-5.png]]
990
991
992 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:
993
994
995 [[image:image-20220610172924-6.png||height="601" width="860"]]
996
997
998
999 == 3.2  Set Transmit Interval Time ==
1000
1001 Feature: Change LoRaWAN End Node Transmit Interval.
1002
1003 (% style="color:#037691" %)**AT Command: AT+TDC**
1004
1005 [[image:image-20220610173409-7.png]]
1006
1007
1008 (((
1009 (% style="color:#037691" %)**Downlink Command: 0x01**
1010 )))
1011
1012 (((
1013 (((
1014 Format: Command Code (0x01) followed by 3 bytes time value.
1015
1016 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1017
1018 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1019 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1020 )))
1021
1022
1023
1024 )))
1025
1026 == 3.3  Set Interrupt Mode ==
1027
1028 Feature, Set Interrupt mode for GPIO_EXIT.
1029
1030 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1031
1032 [[image:image-20220610174917-9.png]]
1033
1034
1035 (% style="color:#037691" %)**Downlink Command: 0x06**
1036
1037 Format: Command Code (0x06) followed by 3 bytes.
1038
1039 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1040
1041 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1042 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
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 = 7. ​ Packing Info =
1104
1105
1106 **Package Includes**:
1107
1108 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1109
1110 **Dimension and weight**:
1111
1112 * Device Size: cm
1113 * Device Weight: g
1114 * Package Size / pcs : cm
1115 * Weight / pcs : g
1116
1117 = 8.  ​Support =
1118
1119 * 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.
1120 * 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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