Version 150.44 by Xiaoling on 2022/06/11 09:16
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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 (((
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 LDDS75 will uplink payload via LoRaWAN with below payload format: 
235
236 Uplink payload includes in total 4 bytes.
237 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
238 )))
239
240 (((
241
242 )))
243
244 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
245 |=(% style="width: 62.5px;" %)(((
246 **Size (bytes)**
247 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
248 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
249 [[Distance>>||anchor="H2.3.2A0Distance"]]
250
251 (unit: mm)
252 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
253 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
254 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
255
256 [[image:1654850511545-399.png]]
257
258
259
260 === 2.3.1  Battery Info ===
261
262
263 Check the battery voltage for LDDS75.
264
265 Ex1: 0x0B45 = 2885mV
266
267 Ex2: 0x0B49 = 2889mV
268
269
270
271 === 2.3.2  Distance ===
272
273 Get the distance. Flat object range 280mm - 7500mm.
274
275 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.**
276
277
278 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
279 * 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.
280
281 === 2.3.3  Interrupt Pin ===
282
283 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.
284
285 **Example:**
286
287 0x00: Normal uplink packet.
288
289 0x01: Interrupt Uplink Packet.
290
291
292
293 === 2.3.4  DS18B20 Temperature sensor ===
294
295 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
296
297 **Example**:
298
299 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
300
301 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
302
303 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
304
305
306
307 === 2.3.5  Sensor Flag ===
308
309 0x01: Detect Ultrasonic Sensor
310
311 0x00: No Ultrasonic Sensor
312
313
314
315 === 2.3.6  Decode payload in The Things Network ===
316
317 While using TTN network, you can add the payload format to decode the payload.
318
319
320 [[image:1654850829385-439.png]]
321
322 The payload decoder function for TTN V3 is here:
323
324 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/]]
325
326
327
328 == 2.4  Uplink Interval ==
329
330 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"]]
331
332
333
334 == 2.5  ​Show Data in DataCake IoT Server ==
335
336 (((
337 [[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:
338 )))
339
340 (((
341
342 )))
343
344 (((
345 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
346 )))
347
348 (((
349 (% 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:**
350 )))
351
352
353 [[image:1654592790040-760.png]]
354
355
356 [[image:1654592800389-571.png]]
357
358
359 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
360
361 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
362
363 [[image:1654851029373-510.png]]
364
365
366 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
367
368 [[image:image-20220610165129-11.png||height="595" width="1088"]]
369
370
371
372 == 2.6  Frequency Plans ==
373
374 (((
375 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.
376 )))
377
378
379
380 === 2.6.1  EU863-870 (EU868) ===
381
382 (((
383 (% style="color:blue" %)**Uplink:**
384 )))
385
386 (((
387 868.1 - SF7BW125 to SF12BW125
388 )))
389
390 (((
391 868.3 - SF7BW125 to SF12BW125 and SF7BW250
392 )))
393
394 (((
395 868.5 - SF7BW125 to SF12BW125
396 )))
397
398 (((
399 867.1 - SF7BW125 to SF12BW125
400 )))
401
402 (((
403 867.3 - SF7BW125 to SF12BW125
404 )))
405
406 (((
407 867.5 - SF7BW125 to SF12BW125
408 )))
409
410 (((
411 867.7 - SF7BW125 to SF12BW125
412 )))
413
414 (((
415 867.9 - SF7BW125 to SF12BW125
416 )))
417
418 (((
419 868.8 - FSK
420 )))
421
422 (((
423
424 )))
425
426 (((
427 (% style="color:blue" %)**Downlink:**
428 )))
429
430 (((
431 Uplink channels 1-9 (RX1)
432 )))
433
434 (((
435 869.525 - SF9BW125 (RX2 downlink only)
436 )))
437
438
439
440 === 2.6.2  US902-928(US915) ===
441
442 (((
443 Used in USA, Canada and South America. Default use CHE=2
444
445 (% style="color:blue" %)**Uplink:**
446
447 903.9 - SF7BW125 to SF10BW125
448
449 904.1 - SF7BW125 to SF10BW125
450
451 904.3 - SF7BW125 to SF10BW125
452
453 904.5 - SF7BW125 to SF10BW125
454
455 904.7 - SF7BW125 to SF10BW125
456
457 904.9 - SF7BW125 to SF10BW125
458
459 905.1 - SF7BW125 to SF10BW125
460
461 905.3 - SF7BW125 to SF10BW125
462
463
464 (% style="color:blue" %)**Downlink:**
465
466 923.3 - SF7BW500 to SF12BW500
467
468 923.9 - SF7BW500 to SF12BW500
469
470 924.5 - SF7BW500 to SF12BW500
471
472 925.1 - SF7BW500 to SF12BW500
473
474 925.7 - SF7BW500 to SF12BW500
475
476 926.3 - SF7BW500 to SF12BW500
477
478 926.9 - SF7BW500 to SF12BW500
479
480 927.5 - SF7BW500 to SF12BW500
481
482 923.3 - SF12BW500(RX2 downlink only)
483
484
485
486 )))
487
488 === 2.6.3  CN470-510 (CN470) ===
489
490 (((
491 Used in China, Default use CHE=1
492 )))
493
494 (((
495 (% style="color:blue" %)**Uplink:**
496 )))
497
498 (((
499 486.3 - SF7BW125 to SF12BW125
500 )))
501
502 (((
503 486.5 - SF7BW125 to SF12BW125
504 )))
505
506 (((
507 486.7 - SF7BW125 to SF12BW125
508 )))
509
510 (((
511 486.9 - SF7BW125 to SF12BW125
512 )))
513
514 (((
515 487.1 - SF7BW125 to SF12BW125
516 )))
517
518 (((
519 487.3 - SF7BW125 to SF12BW125
520 )))
521
522 (((
523 487.5 - SF7BW125 to SF12BW125
524 )))
525
526 (((
527 487.7 - SF7BW125 to SF12BW125
528 )))
529
530 (((
531
532 )))
533
534 (((
535 (% style="color:blue" %)**Downlink:**
536 )))
537
538 (((
539 506.7 - SF7BW125 to SF12BW125
540 )))
541
542 (((
543 506.9 - SF7BW125 to SF12BW125
544 )))
545
546 (((
547 507.1 - SF7BW125 to SF12BW125
548 )))
549
550 (((
551 507.3 - SF7BW125 to SF12BW125
552 )))
553
554 (((
555 507.5 - SF7BW125 to SF12BW125
556 )))
557
558 (((
559 507.7 - SF7BW125 to SF12BW125
560 )))
561
562 (((
563 507.9 - SF7BW125 to SF12BW125
564 )))
565
566 (((
567 508.1 - SF7BW125 to SF12BW125
568 )))
569
570 (((
571 505.3 - SF12BW125 (RX2 downlink only)
572 )))
573
574
575
576 === 2.6.4  AU915-928(AU915) ===
577
578 (((
579 Default use CHE=2
580
581 (% style="color:blue" %)**Uplink:**
582
583 916.8 - SF7BW125 to SF12BW125
584
585 917.0 - SF7BW125 to SF12BW125
586
587 917.2 - SF7BW125 to SF12BW125
588
589 917.4 - SF7BW125 to SF12BW125
590
591 917.6 - SF7BW125 to SF12BW125
592
593 917.8 - SF7BW125 to SF12BW125
594
595 918.0 - SF7BW125 to SF12BW125
596
597 918.2 - SF7BW125 to SF12BW125
598
599
600 (% style="color:blue" %)**Downlink:**
601
602 923.3 - SF7BW500 to SF12BW500
603
604 923.9 - SF7BW500 to SF12BW500
605
606 924.5 - SF7BW500 to SF12BW500
607
608 925.1 - SF7BW500 to SF12BW500
609
610 925.7 - SF7BW500 to SF12BW500
611
612 926.3 - SF7BW500 to SF12BW500
613
614 926.9 - SF7BW500 to SF12BW500
615
616 927.5 - SF7BW500 to SF12BW500
617
618 923.3 - SF12BW500(RX2 downlink only)
619
620
621
622 )))
623
624 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
625
626 (((
627 (% style="color:blue" %)**Default Uplink channel:**
628 )))
629
630 (((
631 923.2 - SF7BW125 to SF10BW125
632 )))
633
634 (((
635 923.4 - SF7BW125 to SF10BW125
636 )))
637
638 (((
639
640 )))
641
642 (((
643 (% style="color:blue" %)**Additional Uplink Channel**:
644 )))
645
646 (((
647 (OTAA mode, channel added by JoinAccept message)
648 )))
649
650 (((
651
652 )))
653
654 (((
655 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
656 )))
657
658 (((
659 922.2 - SF7BW125 to SF10BW125
660 )))
661
662 (((
663 922.4 - SF7BW125 to SF10BW125
664 )))
665
666 (((
667 922.6 - SF7BW125 to SF10BW125
668 )))
669
670 (((
671 922.8 - SF7BW125 to SF10BW125
672 )))
673
674 (((
675 923.0 - SF7BW125 to SF10BW125
676 )))
677
678 (((
679 922.0 - SF7BW125 to SF10BW125
680 )))
681
682 (((
683
684 )))
685
686 (((
687 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
688 )))
689
690 (((
691 923.6 - SF7BW125 to SF10BW125
692 )))
693
694 (((
695 923.8 - SF7BW125 to SF10BW125
696 )))
697
698 (((
699 924.0 - SF7BW125 to SF10BW125
700 )))
701
702 (((
703 924.2 - SF7BW125 to SF10BW125
704 )))
705
706 (((
707 924.4 - SF7BW125 to SF10BW125
708 )))
709
710 (((
711 924.6 - SF7BW125 to SF10BW125
712 )))
713
714 (((
715
716 )))
717
718 (((
719 (% style="color:blue" %)**Downlink:**
720 )))
721
722 (((
723 Uplink channels 1-8 (RX1)
724 )))
725
726 (((
727 923.2 - SF10BW125 (RX2)
728 )))
729
730
731
732 === 2.6.6  KR920-923 (KR920) ===
733
734 (((
735 (% style="color:blue" %)**Default channel:**
736 )))
737
738 (((
739 922.1 - SF7BW125 to SF12BW125
740 )))
741
742 (((
743 922.3 - SF7BW125 to SF12BW125
744 )))
745
746 (((
747 922.5 - SF7BW125 to SF12BW125
748 )))
749
750 (((
751
752 )))
753
754 (((
755 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
756 )))
757
758 (((
759 922.1 - SF7BW125 to SF12BW125
760 )))
761
762 (((
763 922.3 - SF7BW125 to SF12BW125
764 )))
765
766 (((
767 922.5 - SF7BW125 to SF12BW125
768 )))
769
770 (((
771 922.7 - SF7BW125 to SF12BW125
772 )))
773
774 (((
775 922.9 - SF7BW125 to SF12BW125
776 )))
777
778 (((
779 923.1 - SF7BW125 to SF12BW125
780 )))
781
782 (((
783 923.3 - SF7BW125 to SF12BW125
784 )))
785
786 (((
787
788 )))
789
790 (((
791 (% style="color:blue" %)**Downlink:**
792 )))
793
794 (((
795 Uplink channels 1-7(RX1)
796 )))
797
798 (((
799 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
800 )))
801
802
803
804 === 2.6.7  IN865-867 (IN865) ===
805
806 (((
807 (% style="color:blue" %)**Uplink:**
808 )))
809
810 (((
811 865.0625 - SF7BW125 to SF12BW125
812 )))
813
814 (((
815 865.4025 - SF7BW125 to SF12BW125
816 )))
817
818 (((
819 865.9850 - SF7BW125 to SF12BW125
820 )))
821
822 (((
823
824 )))
825
826 (((
827 (% style="color:blue" %)**Downlink:**
828 )))
829
830 (((
831 Uplink channels 1-3 (RX1)
832 )))
833
834 (((
835 866.550 - SF10BW125 (RX2)
836 )))
837
838
839
840 == 2.7  LED Indicator ==
841
842 The LDDS75 has an internal LED which is to show the status of different state.
843
844
845 * Blink once when device power on.
846 * The device detects the sensor and flashes 5 times.
847 * Solid ON for 5 seconds once device successful Join the network.
848 * Blink once when device transmit a packet.
849
850 == 2.8  ​Firmware Change Log ==
851
852
853 **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/]]
854
855
856 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
857
858
859
860 == 2.9  Mechanical ==
861
862
863 [[image:image-20220610172003-1.png]]
864
865
866 [[image:image-20220610172003-2.png]]
867
868
869
870 == 2.10  Battery Analysis ==
871
872 === 2.10.1  Battery Type ===
873
874 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.
875
876
877 The battery related documents as below:
878
879 * (((
880 [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
881 )))
882 * (((
883 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
884 )))
885 * (((
886 [[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]]
887 )))
888
889 [[image:image-20220610172400-3.png]]
890
891
892
893 === 2.10.2  Replace the battery ===
894
895 (((
896 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.
897 )))
898
899 (((
900
901 )))
902
903 (((
904 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)
905 )))
906
907
908
909 = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
910
911 (((
912 (((
913 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
914 )))
915 )))
916
917 * (((
918 (((
919 AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
920 )))
921 )))
922 * (((
923 (((
924 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
925 )))
926 )))
927
928 (((
929 (((
930
931 )))
932
933 (((
934 There are two kinds of commands to configure LDDS75, they are:
935 )))
936 )))
937
938 * (((
939 (((
940 (% style="color:#4f81bd" %)** General Commands**.
941 )))
942 )))
943
944 (((
945 (((
946 These commands are to configure:
947 )))
948 )))
949
950 * (((
951 (((
952 General system settings like: uplink interval.
953 )))
954 )))
955 * (((
956 (((
957 LoRaWAN protocol & radio related command.
958 )))
959 )))
960
961 (((
962 (((
963 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]]
964 )))
965 )))
966
967 (((
968 (((
969
970 )))
971 )))
972
973 * (((
974 (((
975 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
976 )))
977 )))
978
979 (((
980 (((
981 These commands only valid for LDDS75, as below:
982 )))
983 )))
984
985
986
987 == 3.1  Access AT Commands ==
988
989 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.
990
991 [[image:image-20220610172924-4.png||height="483" width="988"]]
992
993
994 Or if you have below board, use below connection:
995
996
997 [[image:image-20220610172924-5.png]]
998
999
1000 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:
1001
1002
1003 [[image:image-20220610172924-6.png||height="601" width="860"]]
1004
1005
1006
1007 == 3.2  Set Transmit Interval Time ==
1008
1009 Feature: Change LoRaWAN End Node Transmit Interval.
1010
1011 (% style="color:#037691" %)**AT Command: AT+TDC**
1012
1013 [[image:image-20220610173409-7.png]]
1014
1015
1016 (((
1017 (% style="color:#037691" %)**Downlink Command: 0x01**
1018 )))
1019
1020 (((
1021 (((
1022 Format: Command Code (0x01) followed by 3 bytes time value.
1023
1024 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1025
1026 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1027 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1028 )))
1029
1030
1031
1032 )))
1033
1034 == 3.3  Set Interrupt Mode ==
1035
1036 Feature, Set Interrupt mode for GPIO_EXIT.
1037
1038 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1039
1040 [[image:image-20220610174917-9.png]]
1041
1042
1043 (% style="color:#037691" %)**Downlink Command: 0x06**
1044
1045 Format: Command Code (0x06) followed by 3 bytes.
1046
1047 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1048
1049 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1050 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1051
1052 = 4.  FAQ =
1053
1054 == 4.1  What is the frequency plan for LDDS75? ==
1055
1056 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"]]
1057
1058
1059
1060 == 4.2  How to change the LoRa Frequency Bands/Region ==
1061
1062 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1063 When downloading the images, choose the required image file for download. ​
1064
1065
1066
1067 == 4.3  Can I use LDDS75 in condensation environment? ==
1068
1069 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1070
1071
1072
1073 = 5.  Trouble Shooting =
1074
1075 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1076
1077 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1078
1079
1080 == 5.2  AT Command input doesn't work ==
1081
1082 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.
1083
1084 (((
1085
1086 )))
1087
1088
1089 = 6.  Order Info =
1090
1091
1092 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1093
1094
1095 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1096
1097 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1098 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1099 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1100 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1101 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1102 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1103 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1104 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1105
1106 (% style="color:blue" %)**YY**(%%): Battery Option
1107
1108 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1109 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1110
1111 = 7. ​ Packing Info =
1112
1113
1114 **Package Includes**:
1115
1116 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1117
1118 **Dimension and weight**:
1119
1120 * Device Size: cm
1121 * Device Weight: g
1122 * Package Size / pcs : cm
1123 * Weight / pcs : g
1124
1125 = 8.  ​Support =
1126
1127 * 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.
1128 * 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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