Version 153.4 by Xiaoling on 2022/06/11 10:00
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" %)** 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
71
72
73 == ​1.2  Features ==
74
75 * LoRaWAN 1.0.3 Class A
76 * Ultra low power consumption
77 * Distance Detection by Ultrasonic technology
78 * Flat object range 280mm - 7500mm
79 * Accuracy: ±(1cm+S*0.3%) (S: Distance)
80 * Cable Length : 25cm
81 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
82 * AT Commands to change parameters
83 * Uplink on periodically
84 * Downlink to change configure
85 * IP66 Waterproof Enclosure
86 * 4000mAh or 8500mAh Battery for long term use
87
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 (((
235 LDDS75 will uplink payload via LoRaWAN with below payload format: 
236 )))
237
238 (((
239 Uplink payload includes in total 4 bytes.
240 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
241 )))
242 )))
243
244 (((
245
246 )))
247
248 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
249 |=(% style="width: 62.5px;" %)(((
250 **Size (bytes)**
251 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
252 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
253 [[Distance>>||anchor="H2.3.2A0Distance"]]
254
255 (unit: mm)
256 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
257 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
258 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
259
260 [[image:1654850511545-399.png]]
261
262
263
264 === 2.3.1  Battery Info ===
265
266
267 Check the battery voltage for LDDS75.
268
269 Ex1: 0x0B45 = 2885mV
270
271 Ex2: 0x0B49 = 2889mV
272
273
274
275 === 2.3.2  Distance ===
276
277 (((
278 Get the distance. Flat object range 280mm - 7500mm.
279 )))
280
281 (((
282 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.**
283 )))
284
285
286 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
287 * 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.
288
289
290
291 === 2.3.3  Interrupt Pin ===
292
293 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.
294
295 **Example:**
296
297 0x00: Normal uplink packet.
298
299 0x01: Interrupt Uplink Packet.
300
301
302
303 === 2.3.4  DS18B20 Temperature sensor ===
304
305 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
306
307 **Example**:
308
309 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
310
311 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
312
313 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
314
315
316
317 === 2.3.5  Sensor Flag ===
318
319 (((
320 0x01: Detect Ultrasonic Sensor
321 )))
322
323 (((
324 0x00: No Ultrasonic Sensor
325 )))
326
327
328
329 === 2.3.6  Decode payload in The Things Network ===
330
331 While using TTN network, you can add the payload format to decode the payload.
332
333
334 [[image:1654850829385-439.png]]
335
336 The payload decoder function for TTN V3 is here:
337
338 (((
339 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/]]
340 )))
341
342
343
344 == 2.4  Uplink Interval ==
345
346 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"]]
347
348
349
350 == 2.5  ​Show Data in DataCake IoT Server ==
351
352 (((
353 [[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:
354 )))
355
356 (((
357
358 )))
359
360 (((
361 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
362 )))
363
364 (((
365 (% 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:**
366 )))
367
368
369 [[image:1654592790040-760.png]]
370
371
372 [[image:1654592800389-571.png]]
373
374
375 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
376
377 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
378
379 [[image:1654851029373-510.png]]
380
381
382 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
383
384 [[image:image-20220610165129-11.png||height="595" width="1088"]]
385
386
387
388 == 2.6  Frequency Plans ==
389
390 (((
391 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.
392 )))
393
394
395
396 === 2.6.1  EU863-870 (EU868) ===
397
398 (((
399 (% style="color:blue" %)**Uplink:**
400 )))
401
402 (((
403 868.1 - SF7BW125 to SF12BW125
404 )))
405
406 (((
407 868.3 - SF7BW125 to SF12BW125 and SF7BW250
408 )))
409
410 (((
411 868.5 - SF7BW125 to SF12BW125
412 )))
413
414 (((
415 867.1 - SF7BW125 to SF12BW125
416 )))
417
418 (((
419 867.3 - SF7BW125 to SF12BW125
420 )))
421
422 (((
423 867.5 - SF7BW125 to SF12BW125
424 )))
425
426 (((
427 867.7 - SF7BW125 to SF12BW125
428 )))
429
430 (((
431 867.9 - SF7BW125 to SF12BW125
432 )))
433
434 (((
435 868.8 - FSK
436 )))
437
438 (((
439
440 )))
441
442 (((
443 (% style="color:blue" %)**Downlink:**
444 )))
445
446 (((
447 Uplink channels 1-9 (RX1)
448 )))
449
450 (((
451 869.525 - SF9BW125 (RX2 downlink only)
452 )))
453
454
455
456 === 2.6.2  US902-928(US915) ===
457
458 (((
459 Used in USA, Canada and South America. Default use CHE=2
460
461 (% style="color:blue" %)**Uplink:**
462
463 903.9 - SF7BW125 to SF10BW125
464
465 904.1 - SF7BW125 to SF10BW125
466
467 904.3 - SF7BW125 to SF10BW125
468
469 904.5 - SF7BW125 to SF10BW125
470
471 904.7 - SF7BW125 to SF10BW125
472
473 904.9 - SF7BW125 to SF10BW125
474
475 905.1 - SF7BW125 to SF10BW125
476
477 905.3 - SF7BW125 to SF10BW125
478
479
480 (% style="color:blue" %)**Downlink:**
481
482 923.3 - SF7BW500 to SF12BW500
483
484 923.9 - SF7BW500 to SF12BW500
485
486 924.5 - SF7BW500 to SF12BW500
487
488 925.1 - SF7BW500 to SF12BW500
489
490 925.7 - SF7BW500 to SF12BW500
491
492 926.3 - SF7BW500 to SF12BW500
493
494 926.9 - SF7BW500 to SF12BW500
495
496 927.5 - SF7BW500 to SF12BW500
497
498 923.3 - SF12BW500(RX2 downlink only)
499
500
501
502 )))
503
504 === 2.6.3  CN470-510 (CN470) ===
505
506 (((
507 Used in China, Default use CHE=1
508 )))
509
510 (((
511 (% style="color:blue" %)**Uplink:**
512 )))
513
514 (((
515 486.3 - SF7BW125 to SF12BW125
516 )))
517
518 (((
519 486.5 - SF7BW125 to SF12BW125
520 )))
521
522 (((
523 486.7 - SF7BW125 to SF12BW125
524 )))
525
526 (((
527 486.9 - SF7BW125 to SF12BW125
528 )))
529
530 (((
531 487.1 - SF7BW125 to SF12BW125
532 )))
533
534 (((
535 487.3 - SF7BW125 to SF12BW125
536 )))
537
538 (((
539 487.5 - SF7BW125 to SF12BW125
540 )))
541
542 (((
543 487.7 - SF7BW125 to SF12BW125
544 )))
545
546 (((
547
548 )))
549
550 (((
551 (% style="color:blue" %)**Downlink:**
552 )))
553
554 (((
555 506.7 - SF7BW125 to SF12BW125
556 )))
557
558 (((
559 506.9 - SF7BW125 to SF12BW125
560 )))
561
562 (((
563 507.1 - SF7BW125 to SF12BW125
564 )))
565
566 (((
567 507.3 - SF7BW125 to SF12BW125
568 )))
569
570 (((
571 507.5 - SF7BW125 to SF12BW125
572 )))
573
574 (((
575 507.7 - SF7BW125 to SF12BW125
576 )))
577
578 (((
579 507.9 - SF7BW125 to SF12BW125
580 )))
581
582 (((
583 508.1 - SF7BW125 to SF12BW125
584 )))
585
586 (((
587 505.3 - SF12BW125 (RX2 downlink only)
588 )))
589
590
591
592 === 2.6.4  AU915-928(AU915) ===
593
594 (((
595 Default use CHE=2
596
597 (% style="color:blue" %)**Uplink:**
598
599 916.8 - SF7BW125 to SF12BW125
600
601 917.0 - SF7BW125 to SF12BW125
602
603 917.2 - SF7BW125 to SF12BW125
604
605 917.4 - SF7BW125 to SF12BW125
606
607 917.6 - SF7BW125 to SF12BW125
608
609 917.8 - SF7BW125 to SF12BW125
610
611 918.0 - SF7BW125 to SF12BW125
612
613 918.2 - SF7BW125 to SF12BW125
614
615
616 (% style="color:blue" %)**Downlink:**
617
618 923.3 - SF7BW500 to SF12BW500
619
620 923.9 - SF7BW500 to SF12BW500
621
622 924.5 - SF7BW500 to SF12BW500
623
624 925.1 - SF7BW500 to SF12BW500
625
626 925.7 - SF7BW500 to SF12BW500
627
628 926.3 - SF7BW500 to SF12BW500
629
630 926.9 - SF7BW500 to SF12BW500
631
632 927.5 - SF7BW500 to SF12BW500
633
634 923.3 - SF12BW500(RX2 downlink only)
635
636
637
638 )))
639
640 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
641
642 (((
643 (% style="color:blue" %)**Default Uplink channel:**
644 )))
645
646 (((
647 923.2 - SF7BW125 to SF10BW125
648 )))
649
650 (((
651 923.4 - SF7BW125 to SF10BW125
652 )))
653
654 (((
655
656 )))
657
658 (((
659 (% style="color:blue" %)**Additional Uplink Channel**:
660 )))
661
662 (((
663 (OTAA mode, channel added by JoinAccept message)
664 )))
665
666 (((
667
668 )))
669
670 (((
671 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
672 )))
673
674 (((
675 922.2 - SF7BW125 to SF10BW125
676 )))
677
678 (((
679 922.4 - SF7BW125 to SF10BW125
680 )))
681
682 (((
683 922.6 - SF7BW125 to SF10BW125
684 )))
685
686 (((
687 922.8 - SF7BW125 to SF10BW125
688 )))
689
690 (((
691 923.0 - SF7BW125 to SF10BW125
692 )))
693
694 (((
695 922.0 - SF7BW125 to SF10BW125
696 )))
697
698 (((
699
700 )))
701
702 (((
703 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
704 )))
705
706 (((
707 923.6 - SF7BW125 to SF10BW125
708 )))
709
710 (((
711 923.8 - SF7BW125 to SF10BW125
712 )))
713
714 (((
715 924.0 - SF7BW125 to SF10BW125
716 )))
717
718 (((
719 924.2 - SF7BW125 to SF10BW125
720 )))
721
722 (((
723 924.4 - SF7BW125 to SF10BW125
724 )))
725
726 (((
727 924.6 - SF7BW125 to SF10BW125
728 )))
729
730 (((
731
732 )))
733
734 (((
735 (% style="color:blue" %)**Downlink:**
736 )))
737
738 (((
739 Uplink channels 1-8 (RX1)
740 )))
741
742 (((
743 923.2 - SF10BW125 (RX2)
744 )))
745
746
747
748 === 2.6.6  KR920-923 (KR920) ===
749
750 (((
751 (% style="color:blue" %)**Default channel:**
752 )))
753
754 (((
755 922.1 - SF7BW125 to SF12BW125
756 )))
757
758 (((
759 922.3 - SF7BW125 to SF12BW125
760 )))
761
762 (((
763 922.5 - SF7BW125 to SF12BW125
764 )))
765
766 (((
767
768 )))
769
770 (((
771 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
772 )))
773
774 (((
775 922.1 - SF7BW125 to SF12BW125
776 )))
777
778 (((
779 922.3 - SF7BW125 to SF12BW125
780 )))
781
782 (((
783 922.5 - SF7BW125 to SF12BW125
784 )))
785
786 (((
787 922.7 - SF7BW125 to SF12BW125
788 )))
789
790 (((
791 922.9 - SF7BW125 to SF12BW125
792 )))
793
794 (((
795 923.1 - SF7BW125 to SF12BW125
796 )))
797
798 (((
799 923.3 - SF7BW125 to SF12BW125
800 )))
801
802 (((
803
804 )))
805
806 (((
807 (% style="color:blue" %)**Downlink:**
808 )))
809
810 (((
811 Uplink channels 1-7(RX1)
812 )))
813
814 (((
815 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
816 )))
817
818
819
820 === 2.6.7  IN865-867 (IN865) ===
821
822 (((
823 (% style="color:blue" %)**Uplink:**
824 )))
825
826 (((
827 865.0625 - SF7BW125 to SF12BW125
828 )))
829
830 (((
831 865.4025 - SF7BW125 to SF12BW125
832 )))
833
834 (((
835 865.9850 - SF7BW125 to SF12BW125
836 )))
837
838 (((
839
840 )))
841
842 (((
843 (% style="color:blue" %)**Downlink:**
844 )))
845
846 (((
847 Uplink channels 1-3 (RX1)
848 )))
849
850 (((
851 866.550 - SF10BW125 (RX2)
852 )))
853
854
855
856 == 2.7  LED Indicator ==
857
858 The LDDS75 has an internal LED which is to show the status of different state.
859
860
861 * Blink once when device power on.
862 * The device detects the sensor and flashes 5 times.
863 * Solid ON for 5 seconds once device successful Join the network.
864 * Blink once when device transmit a packet.
865
866
867
868 == 2.8  ​Firmware Change Log ==
869
870
871 (((
872 **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/]]
873 )))
874
875 (((
876
877 )))
878
879 (((
880 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
881 )))
882
883
884
885 == 2.9  Mechanical ==
886
887
888 [[image:image-20220610172003-1.png]]
889
890
891 [[image:image-20220610172003-2.png]]
892
893
894
895 == 2.10  Battery Analysis ==
896
897 === 2.10.1  Battery Type ===
898
899 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.
900
901
902 The battery related documents as below:
903
904 * (((
905 [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
906 )))
907 * (((
908 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
909 )))
910 * (((
911 [[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]]
912 )))
913
914 [[image:image-20220610172400-3.png]]
915
916
917
918 === 2.10.2  Replace the battery ===
919
920 (((
921 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.
922 )))
923
924 (((
925
926 )))
927
928 (((
929 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)
930 )))
931
932
933
934 = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
935
936 (((
937 (((
938 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
939 )))
940 )))
941
942 * (((
943 (((
944 AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
945 )))
946 )))
947 * (((
948 (((
949 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
950 )))
951 )))
952
953 (((
954 (((
955
956 )))
957
958 (((
959 There are two kinds of commands to configure LDDS75, they are:
960 )))
961 )))
962
963 * (((
964 (((
965 (% style="color:#4f81bd" %)** General Commands**.
966 )))
967 )))
968
969 (((
970 (((
971 These commands are to configure:
972 )))
973 )))
974
975 * (((
976 (((
977 General system settings like: uplink interval.
978 )))
979 )))
980 * (((
981 (((
982 LoRaWAN protocol & radio related command.
983 )))
984 )))
985
986 (((
987 (((
988 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]]
989 )))
990 )))
991
992 (((
993 (((
994
995 )))
996 )))
997
998 * (((
999 (((
1000 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
1001 )))
1002 )))
1003
1004 (((
1005 (((
1006 These commands only valid for LDDS75, as below:
1007 )))
1008 )))
1009
1010
1011
1012 == 3.1  Access AT Commands ==
1013
1014 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.
1015
1016 [[image:image-20220610172924-4.png||height="483" width="988"]]
1017
1018
1019 Or if you have below board, use below connection:
1020
1021
1022 [[image:image-20220610172924-5.png]]
1023
1024
1025 (((
1026 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:
1027 )))
1028
1029
1030 [[image:image-20220610172924-6.png||height="601" width="860"]]
1031
1032
1033
1034 == 3.2  Set Transmit Interval Time ==
1035
1036 Feature: Change LoRaWAN End Node Transmit Interval.
1037
1038 (% style="color:#037691" %)**AT Command: AT+TDC**
1039
1040 [[image:image-20220610173409-7.png]]
1041
1042
1043 (((
1044 (% style="color:#037691" %)**Downlink Command: 0x01**
1045 )))
1046
1047 (((
1048 (((
1049 Format: Command Code (0x01) followed by 3 bytes time value.
1050
1051 (((
1052 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1053 )))
1054
1055 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1056 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1057 )))
1058 )))
1059
1060
1061
1062
1063
1064 == 3.3  Set Interrupt Mode ==
1065
1066 Feature, Set Interrupt mode for GPIO_EXIT.
1067
1068 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1069
1070 [[image:image-20220610174917-9.png]]
1071
1072
1073 (% style="color:#037691" %)**Downlink Command: 0x06**
1074
1075 Format: Command Code (0x06) followed by 3 bytes.
1076
1077 (((
1078 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1079 )))
1080
1081 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1082 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1083
1084
1085
1086 = 4.  FAQ =
1087
1088 == 4.1  What is the frequency plan for LDDS75? ==
1089
1090 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"]]
1091
1092
1093
1094 == 4.2  How to change the LoRa Frequency Bands/Region ==
1095
1096 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1097 When downloading the images, choose the required image file for download. ​
1098
1099
1100
1101 == 4.3  Can I use LDDS75 in condensation environment? ==
1102
1103 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1104
1105
1106
1107 = 5.  Trouble Shooting =
1108
1109 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1110
1111 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1112
1113
1114 == 5.2  AT Command input doesn't work ==
1115
1116 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.
1117
1118 (((
1119
1120 )))
1121
1122
1123 = 6.  Order Info =
1124
1125
1126 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1127
1128
1129 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1130
1131 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1132 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1133 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1134 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1135 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1136 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1137 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1138 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1139
1140 (% style="color:blue" %)**YY**(%%): Battery Option
1141
1142 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1143 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1144
1145
1146
1147 = 7. ​ Packing Info =
1148
1149
1150 **Package Includes**:
1151
1152 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1153
1154 **Dimension and weight**:
1155
1156 * Device Size: cm
1157 * Device Weight: g
1158 * Package Size / pcs : cm
1159 * Weight / pcs : g
1160
1161
1162
1163 = 8.  ​Support =
1164
1165 * 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.
1166 * 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]].

Applications

Navigation

Copyright ©2010-2022 Dragino Technology Co., LTD. All rights reserved
Dragino Wiki v2.0