Skip to Content
Version 153.2 by Xiaoling on 2022/06/11 09:57
Show last authors
1 (% style="text-align:center" %)
2 [[image:1654912614655-664.png||height="530" width="628"]]
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 (((
114 **(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.**
115 )))
116
117
118 [[image:1654852175653-550.png]](% style="display:none" %) ** **
119
120
121
122 == 1.5 ​ Applications ==
123
124 * Horizontal distance measurement
125 * Liquid level measurement
126 * Parking management system
127 * Object proximity and presence detection
128 * Intelligent trash can management system
129 * Robot obstacle avoidance
130 * Automatic control
131 * Sewer
132 * Bottom water level monitoring
133
134
135
136 == 1.6  Pin mapping and power on ==
137
138
139 [[image:1654847583902-256.png]]
140
141
142
143 = 2.  Configure LDDS75 to connect to LoRaWAN network =
144
145 == 2.1  How it works ==
146
147 (((
148 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
149 )))
150
151 (((
152 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.
153 )))
154
155
156
157 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
158
159 (((
160 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.
161 )))
162
163 (((
164 [[image:1654848616367-242.png]]
165 )))
166
167 (((
168 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.
169 )))
170
171 (((
172 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
173 )))
174
175 (((
176 Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
177 )))
178
179 [[image:image-20220607170145-1.jpeg]]
180
181
182 (((
183 For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
184 )))
185
186 (((
187 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
188 )))
189
190 (((
191 **Add APP EUI in the application**
192 )))
193
194 [[image:image-20220610161353-4.png]]
195
196 [[image:image-20220610161353-5.png]]
197
198 [[image:image-20220610161353-6.png]]
199
200
201 [[image:image-20220610161353-7.png]]
202
203
204 You can also choose to create the device manually.
205
206 [[image:image-20220610161538-8.png]]
207
208
209
210 **Add APP KEY and DEV EUI**
211
212 [[image:image-20220610161538-9.png]]
213
214
215
216 (% style="color:blue" %)**Step 2**(%%): Power on LDDS75
217
218
219 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
220
221 [[image:image-20220610161724-10.png]]
222
223
224 (((
225 (% 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.
226 )))
227
228 [[image:1654849068701-275.png]]
229
230
231
232 == 2.3  ​Uplink Payload ==
233
234 (((
235 (((
236 LDDS75 will uplink payload via LoRaWAN with below payload format: 
237 )))
238
239 (((
240 Uplink payload includes in total 4 bytes.
241 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
242 )))
243 )))
244
245 (((
246
247 )))
248
249 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
250 |=(% style="width: 62.5px;" %)(((
251 **Size (bytes)**
252 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
253 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
254 [[Distance>>||anchor="H2.3.2A0Distance"]]
255
256 (unit: mm)
257 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
258 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
259 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
260
261 [[image:1654850511545-399.png]]
262
263
264
265 === 2.3.1  Battery Info ===
266
267
268 Check the battery voltage for LDDS75.
269
270 Ex1: 0x0B45 = 2885mV
271
272 Ex2: 0x0B49 = 2889mV
273
274
275
276 === 2.3.2  Distance ===
277
278 (((
279 Get the distance. Flat object range 280mm - 7500mm.
280 )))
281
282 (((
283 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.**
284 )))
285
286
287 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
288 * 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.
289
290
291
292 === 2.3.3  Interrupt Pin ===
293
294 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.
295
296 **Example:**
297
298 0x00: Normal uplink packet.
299
300 0x01: Interrupt Uplink Packet.
301
302
303
304 === 2.3.4  DS18B20 Temperature sensor ===
305
306 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
307
308 **Example**:
309
310 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
311
312 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
313
314 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
315
316
317
318 === 2.3.5  Sensor Flag ===
319
320 (((
321 0x01: Detect Ultrasonic Sensor
322 )))
323
324 (((
325 0x00: No Ultrasonic Sensor
326 )))
327
328
329
330 === 2.3.6  Decode payload in The Things Network ===
331
332 While using TTN network, you can add the payload format to decode the payload.
333
334
335 [[image:1654850829385-439.png]]
336
337 The payload decoder function for TTN V3 is here:
338
339 (((
340 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/]]
341 )))
342
343
344
345 == 2.4  Uplink Interval ==
346
347 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"]]
348
349
350
351 == 2.5  ​Show Data in DataCake IoT Server ==
352
353 (((
354 [[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:
355 )))
356
357 (((
358
359 )))
360
361 (((
362 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
363 )))
364
365 (((
366 (% 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:**
367 )))
368
369
370 [[image:1654592790040-760.png]]
371
372
373 [[image:1654592800389-571.png]]
374
375
376 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
377
378 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
379
380 [[image:1654851029373-510.png]]
381
382
383 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
384
385 [[image:image-20220610165129-11.png||height="595" width="1088"]]
386
387
388
389 == 2.6  Frequency Plans ==
390
391 (((
392 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.
393 )))
394
395
396
397 === 2.6.1  EU863-870 (EU868) ===
398
399 (((
400 (% style="color:blue" %)**Uplink:**
401 )))
402
403 (((
404 868.1 - SF7BW125 to SF12BW125
405 )))
406
407 (((
408 868.3 - SF7BW125 to SF12BW125 and SF7BW250
409 )))
410
411 (((
412 868.5 - SF7BW125 to SF12BW125
413 )))
414
415 (((
416 867.1 - SF7BW125 to SF12BW125
417 )))
418
419 (((
420 867.3 - SF7BW125 to SF12BW125
421 )))
422
423 (((
424 867.5 - SF7BW125 to SF12BW125
425 )))
426
427 (((
428 867.7 - SF7BW125 to SF12BW125
429 )))
430
431 (((
432 867.9 - SF7BW125 to SF12BW125
433 )))
434
435 (((
436 868.8 - FSK
437 )))
438
439 (((
440
441 )))
442
443 (((
444 (% style="color:blue" %)**Downlink:**
445 )))
446
447 (((
448 Uplink channels 1-9 (RX1)
449 )))
450
451 (((
452 869.525 - SF9BW125 (RX2 downlink only)
453 )))
454
455
456
457 === 2.6.2  US902-928(US915) ===
458
459 (((
460 Used in USA, Canada and South America. Default use CHE=2
461
462 (% style="color:blue" %)**Uplink:**
463
464 903.9 - SF7BW125 to SF10BW125
465
466 904.1 - SF7BW125 to SF10BW125
467
468 904.3 - SF7BW125 to SF10BW125
469
470 904.5 - SF7BW125 to SF10BW125
471
472 904.7 - SF7BW125 to SF10BW125
473
474 904.9 - SF7BW125 to SF10BW125
475
476 905.1 - SF7BW125 to SF10BW125
477
478 905.3 - SF7BW125 to SF10BW125
479
480
481 (% style="color:blue" %)**Downlink:**
482
483 923.3 - SF7BW500 to SF12BW500
484
485 923.9 - SF7BW500 to SF12BW500
486
487 924.5 - SF7BW500 to SF12BW500
488
489 925.1 - SF7BW500 to SF12BW500
490
491 925.7 - SF7BW500 to SF12BW500
492
493 926.3 - SF7BW500 to SF12BW500
494
495 926.9 - SF7BW500 to SF12BW500
496
497 927.5 - SF7BW500 to SF12BW500
498
499 923.3 - SF12BW500(RX2 downlink only)
500
501
502
503 )))
504
505 === 2.6.3  CN470-510 (CN470) ===
506
507 (((
508 Used in China, Default use CHE=1
509 )))
510
511 (((
512 (% style="color:blue" %)**Uplink:**
513 )))
514
515 (((
516 486.3 - SF7BW125 to SF12BW125
517 )))
518
519 (((
520 486.5 - SF7BW125 to SF12BW125
521 )))
522
523 (((
524 486.7 - SF7BW125 to SF12BW125
525 )))
526
527 (((
528 486.9 - SF7BW125 to SF12BW125
529 )))
530
531 (((
532 487.1 - SF7BW125 to SF12BW125
533 )))
534
535 (((
536 487.3 - SF7BW125 to SF12BW125
537 )))
538
539 (((
540 487.5 - SF7BW125 to SF12BW125
541 )))
542
543 (((
544 487.7 - SF7BW125 to SF12BW125
545 )))
546
547 (((
548
549 )))
550
551 (((
552 (% style="color:blue" %)**Downlink:**
553 )))
554
555 (((
556 506.7 - SF7BW125 to SF12BW125
557 )))
558
559 (((
560 506.9 - SF7BW125 to SF12BW125
561 )))
562
563 (((
564 507.1 - SF7BW125 to SF12BW125
565 )))
566
567 (((
568 507.3 - SF7BW125 to SF12BW125
569 )))
570
571 (((
572 507.5 - SF7BW125 to SF12BW125
573 )))
574
575 (((
576 507.7 - SF7BW125 to SF12BW125
577 )))
578
579 (((
580 507.9 - SF7BW125 to SF12BW125
581 )))
582
583 (((
584 508.1 - SF7BW125 to SF12BW125
585 )))
586
587 (((
588 505.3 - SF12BW125 (RX2 downlink only)
589 )))
590
591
592
593 === 2.6.4  AU915-928(AU915) ===
594
595 (((
596 Default use CHE=2
597
598 (% style="color:blue" %)**Uplink:**
599
600 916.8 - SF7BW125 to SF12BW125
601
602 917.0 - SF7BW125 to SF12BW125
603
604 917.2 - SF7BW125 to SF12BW125
605
606 917.4 - SF7BW125 to SF12BW125
607
608 917.6 - SF7BW125 to SF12BW125
609
610 917.8 - SF7BW125 to SF12BW125
611
612 918.0 - SF7BW125 to SF12BW125
613
614 918.2 - SF7BW125 to SF12BW125
615
616
617 (% style="color:blue" %)**Downlink:**
618
619 923.3 - SF7BW500 to SF12BW500
620
621 923.9 - SF7BW500 to SF12BW500
622
623 924.5 - SF7BW500 to SF12BW500
624
625 925.1 - SF7BW500 to SF12BW500
626
627 925.7 - SF7BW500 to SF12BW500
628
629 926.3 - SF7BW500 to SF12BW500
630
631 926.9 - SF7BW500 to SF12BW500
632
633 927.5 - SF7BW500 to SF12BW500
634
635 923.3 - SF12BW500(RX2 downlink only)
636
637
638
639 )))
640
641 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
642
643 (((
644 (% style="color:blue" %)**Default Uplink channel:**
645 )))
646
647 (((
648 923.2 - SF7BW125 to SF10BW125
649 )))
650
651 (((
652 923.4 - SF7BW125 to SF10BW125
653 )))
654
655 (((
656
657 )))
658
659 (((
660 (% style="color:blue" %)**Additional Uplink Channel**:
661 )))
662
663 (((
664 (OTAA mode, channel added by JoinAccept message)
665 )))
666
667 (((
668
669 )))
670
671 (((
672 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
673 )))
674
675 (((
676 922.2 - SF7BW125 to SF10BW125
677 )))
678
679 (((
680 922.4 - SF7BW125 to SF10BW125
681 )))
682
683 (((
684 922.6 - SF7BW125 to SF10BW125
685 )))
686
687 (((
688 922.8 - SF7BW125 to SF10BW125
689 )))
690
691 (((
692 923.0 - SF7BW125 to SF10BW125
693 )))
694
695 (((
696 922.0 - SF7BW125 to SF10BW125
697 )))
698
699 (((
700
701 )))
702
703 (((
704 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
705 )))
706
707 (((
708 923.6 - SF7BW125 to SF10BW125
709 )))
710
711 (((
712 923.8 - SF7BW125 to SF10BW125
713 )))
714
715 (((
716 924.0 - SF7BW125 to SF10BW125
717 )))
718
719 (((
720 924.2 - SF7BW125 to SF10BW125
721 )))
722
723 (((
724 924.4 - SF7BW125 to SF10BW125
725 )))
726
727 (((
728 924.6 - SF7BW125 to SF10BW125
729 )))
730
731 (((
732
733 )))
734
735 (((
736 (% style="color:blue" %)**Downlink:**
737 )))
738
739 (((
740 Uplink channels 1-8 (RX1)
741 )))
742
743 (((
744 923.2 - SF10BW125 (RX2)
745 )))
746
747
748
749 === 2.6.6  KR920-923 (KR920) ===
750
751 (((
752 (% style="color:blue" %)**Default channel:**
753 )))
754
755 (((
756 922.1 - SF7BW125 to SF12BW125
757 )))
758
759 (((
760 922.3 - SF7BW125 to SF12BW125
761 )))
762
763 (((
764 922.5 - SF7BW125 to SF12BW125
765 )))
766
767 (((
768
769 )))
770
771 (((
772 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
773 )))
774
775 (((
776 922.1 - SF7BW125 to SF12BW125
777 )))
778
779 (((
780 922.3 - SF7BW125 to SF12BW125
781 )))
782
783 (((
784 922.5 - SF7BW125 to SF12BW125
785 )))
786
787 (((
788 922.7 - SF7BW125 to SF12BW125
789 )))
790
791 (((
792 922.9 - SF7BW125 to SF12BW125
793 )))
794
795 (((
796 923.1 - SF7BW125 to SF12BW125
797 )))
798
799 (((
800 923.3 - SF7BW125 to SF12BW125
801 )))
802
803 (((
804
805 )))
806
807 (((
808 (% style="color:blue" %)**Downlink:**
809 )))
810
811 (((
812 Uplink channels 1-7(RX1)
813 )))
814
815 (((
816 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
817 )))
818
819
820
821 === 2.6.7  IN865-867 (IN865) ===
822
823 (((
824 (% style="color:blue" %)**Uplink:**
825 )))
826
827 (((
828 865.0625 - SF7BW125 to SF12BW125
829 )))
830
831 (((
832 865.4025 - SF7BW125 to SF12BW125
833 )))
834
835 (((
836 865.9850 - SF7BW125 to SF12BW125
837 )))
838
839 (((
840
841 )))
842
843 (((
844 (% style="color:blue" %)**Downlink:**
845 )))
846
847 (((
848 Uplink channels 1-3 (RX1)
849 )))
850
851 (((
852 866.550 - SF10BW125 (RX2)
853 )))
854
855
856
857 == 2.7  LED Indicator ==
858
859 The LDDS75 has an internal LED which is to show the status of different state.
860
861
862 * Blink once when device power on.
863 * The device detects the sensor and flashes 5 times.
864 * Solid ON for 5 seconds once device successful Join the network.
865 * Blink once when device transmit a packet.
866
867
868
869 == 2.8  ​Firmware Change Log ==
870
871
872 (((
873 **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/]]
874 )))
875
876 (((
877
878 )))
879
880 (((
881 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
882 )))
883
884
885
886 == 2.9  Mechanical ==
887
888
889 [[image:image-20220610172003-1.png]]
890
891
892 [[image:image-20220610172003-2.png]]
893
894
895
896 == 2.10  Battery Analysis ==
897
898 === 2.10.1  Battery Type ===
899
900 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.
901
902
903 The battery related documents as below:
904
905 * (((
906 [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
907 )))
908 * (((
909 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
910 )))
911 * (((
912 [[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]]
913 )))
914
915 [[image:image-20220610172400-3.png]]
916
917
918
919 === 2.10.2  Replace the battery ===
920
921 (((
922 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.
923 )))
924
925 (((
926
927 )))
928
929 (((
930 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)
931 )))
932
933
934
935 = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
936
937 (((
938 (((
939 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
940 )))
941 )))
942
943 * (((
944 (((
945 AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
946 )))
947 )))
948 * (((
949 (((
950 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
951 )))
952 )))
953
954 (((
955 (((
956
957 )))
958
959 (((
960 There are two kinds of commands to configure LDDS75, they are:
961 )))
962 )))
963
964 * (((
965 (((
966 (% style="color:#4f81bd" %)** General Commands**.
967 )))
968 )))
969
970 (((
971 (((
972 These commands are to configure:
973 )))
974 )))
975
976 * (((
977 (((
978 General system settings like: uplink interval.
979 )))
980 )))
981 * (((
982 (((
983 LoRaWAN protocol & radio related command.
984 )))
985 )))
986
987 (((
988 (((
989 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]]
990 )))
991 )))
992
993 (((
994 (((
995
996 )))
997 )))
998
999 * (((
1000 (((
1001 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
1002 )))
1003 )))
1004
1005 (((
1006 (((
1007 These commands only valid for LDDS75, as below:
1008 )))
1009 )))
1010
1011
1012
1013 == 3.1  Access AT Commands ==
1014
1015 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.
1016
1017 [[image:image-20220610172924-4.png||height="483" width="988"]]
1018
1019
1020 Or if you have below board, use below connection:
1021
1022
1023 [[image:image-20220610172924-5.png]]
1024
1025
1026 (((
1027 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:
1028 )))
1029
1030
1031 [[image:image-20220610172924-6.png||height="601" width="860"]]
1032
1033
1034
1035 == 3.2  Set Transmit Interval Time ==
1036
1037 Feature: Change LoRaWAN End Node Transmit Interval.
1038
1039 (% style="color:#037691" %)**AT Command: AT+TDC**
1040
1041 [[image:image-20220610173409-7.png]]
1042
1043
1044 (((
1045 (% style="color:#037691" %)**Downlink Command: 0x01**
1046 )))
1047
1048 (((
1049 (((
1050 Format: Command Code (0x01) followed by 3 bytes time value.
1051
1052 (((
1053 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1054 )))
1055
1056 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1057 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1058 )))
1059 )))
1060
1061
1062
1063
1064
1065 == 3.3  Set Interrupt Mode ==
1066
1067 Feature, Set Interrupt mode for GPIO_EXIT.
1068
1069 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1070
1071 [[image:image-20220610174917-9.png]]
1072
1073
1074 (% style="color:#037691" %)**Downlink Command: 0x06**
1075
1076 Format: Command Code (0x06) followed by 3 bytes.
1077
1078 (((
1079 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1080 )))
1081
1082 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1083 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1084
1085
1086
1087 = 4.  FAQ =
1088
1089 == 4.1  What is the frequency plan for LDDS75? ==
1090
1091 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"]]
1092
1093
1094
1095 == 4.2  How to change the LoRa Frequency Bands/Region ==
1096
1097 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1098 When downloading the images, choose the required image file for download. ​
1099
1100
1101
1102 == 4.3  Can I use LDDS75 in condensation environment? ==
1103
1104 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1105
1106
1107
1108 = 5.  Trouble Shooting =
1109
1110 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1111
1112 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1113
1114
1115 == 5.2  AT Command input doesn't work ==
1116
1117 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.
1118
1119 (((
1120
1121 )))
1122
1123
1124 = 6.  Order Info =
1125
1126
1127 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1128
1129
1130 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1131
1132 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1133 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1134 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1135 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1136 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1137 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1138 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1139 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1140
1141 (% style="color:blue" %)**YY**(%%): Battery Option
1142
1143 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1144 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1145
1146
1147
1148 = 7. ​ Packing Info =
1149
1150
1151 **Package Includes**:
1152
1153 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1154
1155 **Dimension and weight**:
1156
1157 * Device Size: cm
1158 * Device Weight: g
1159 * Package Size / pcs : cm
1160 * Weight / pcs : g
1161
1162
1163
1164 = 8.  ​Support =
1165
1166 * 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.
1167 * 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]].