Version 150.39 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
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 **(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 [[image:1654852175653-550.png]](% style="display:none" %) ** **
117
118
119
120 == 1.5 ​ Applications ==
121
122 * Horizontal distance measurement
123 * Liquid level measurement
124 * Parking management system
125 * Object proximity and presence detection
126 * Intelligent trash can management system
127 * Robot obstacle avoidance
128 * Automatic control
129 * Sewer
130 * Bottom water level monitoring
131
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 For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
182
183 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
184
185 **Add APP EUI in the application**
186
187 [[image:image-20220610161353-4.png]]
188
189 [[image:image-20220610161353-5.png]]
190
191 [[image:image-20220610161353-6.png]]
192
193
194 [[image:image-20220610161353-7.png]]
195
196
197 You can also choose to create the device manually.
198
199 [[image:image-20220610161538-8.png]]
200
201
202
203 **Add APP KEY and DEV EUI**
204
205 [[image:image-20220610161538-9.png]]
206
207
208
209 (% style="color:blue" %)**Step 2**(%%): Power on LDDS75
210
211
212 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
213
214 [[image:image-20220610161724-10.png]]
215
216
217 (((
218 (% 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.
219 )))
220
221 [[image:1654849068701-275.png]]
222
223
224
225 == 2.3  ​Uplink Payload ==
226
227 (((
228 LDDS75 will uplink payload via LoRaWAN with below payload format: 
229
230 Uplink payload includes in total 4 bytes.
231 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
232 )))
233
234 (((
235
236 )))
237
238 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
239 |=(% style="width: 62.5px;" %)(((
240 **Size (bytes)**
241 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
242 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
243 [[Distance>>||anchor="H2.3.2A0Distance"]]
244
245 (unit: mm)
246 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
247 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
248 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
249
250 [[image:1654850511545-399.png]]
251
252
253
254 === 2.3.1  Battery Info ===
255
256
257 Check the battery voltage for LDDS75.
258
259 Ex1: 0x0B45 = 2885mV
260
261 Ex2: 0x0B49 = 2889mV
262
263
264
265 === 2.3.2  Distance ===
266
267 Get the distance. Flat object range 280mm - 7500mm.
268
269 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.**
270
271
272 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
273 * 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.
274
275 === 2.3.3  Interrupt Pin ===
276
277 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.
278
279 **Example:**
280
281 0x00: Normal uplink packet.
282
283 0x01: Interrupt Uplink Packet.
284
285
286
287 === 2.3.4  DS18B20 Temperature sensor ===
288
289 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
290
291 **Example**:
292
293 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
294
295 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
296
297 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
298
299
300
301 === 2.3.5  Sensor Flag ===
302
303 0x01: Detect Ultrasonic Sensor
304
305 0x00: No Ultrasonic Sensor
306
307
308
309 === 2.3.6  Decode payload in The Things Network ===
310
311 While using TTN network, you can add the payload format to decode the payload.
312
313
314 [[image:1654850829385-439.png]]
315
316 The payload decoder function for TTN V3 is here:
317
318 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/]]
319
320
321
322 == 2.4  Uplink Interval ==
323
324 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"]]
325
326
327
328 == 2.5  ​Show Data in DataCake IoT Server ==
329
330 (((
331 [[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:
332 )))
333
334 (((
335
336 )))
337
338 (((
339 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
340 )))
341
342 (((
343 (% 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:**
344 )))
345
346
347 [[image:1654592790040-760.png]]
348
349
350 [[image:1654592800389-571.png]]
351
352
353 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
354
355 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
356
357 [[image:1654851029373-510.png]]
358
359
360 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
361
362 [[image:image-20220610165129-11.png||height="595" width="1088"]]
363
364
365
366 == 2.6  Frequency Plans ==
367
368 (((
369 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.
370 )))
371
372
373
374 === 2.6.1  EU863-870 (EU868) ===
375
376 (((
377 (% style="color:blue" %)**Uplink:**
378 )))
379
380 (((
381 868.1 - SF7BW125 to SF12BW125
382 )))
383
384 (((
385 868.3 - SF7BW125 to SF12BW125 and SF7BW250
386 )))
387
388 (((
389 868.5 - SF7BW125 to SF12BW125
390 )))
391
392 (((
393 867.1 - SF7BW125 to SF12BW125
394 )))
395
396 (((
397 867.3 - SF7BW125 to SF12BW125
398 )))
399
400 (((
401 867.5 - SF7BW125 to SF12BW125
402 )))
403
404 (((
405 867.7 - SF7BW125 to SF12BW125
406 )))
407
408 (((
409 867.9 - SF7BW125 to SF12BW125
410 )))
411
412 (((
413 868.8 - FSK
414 )))
415
416 (((
417
418 )))
419
420 (((
421 (% style="color:blue" %)**Downlink:**
422 )))
423
424 (((
425 Uplink channels 1-9 (RX1)
426 )))
427
428 (((
429 869.525 - SF9BW125 (RX2 downlink only)
430 )))
431
432
433
434 === 2.6.2  US902-928(US915) ===
435
436 (((
437 Used in USA, Canada and South America. Default use CHE=2
438
439 (% style="color:blue" %)**Uplink:**
440
441 903.9 - SF7BW125 to SF10BW125
442
443 904.1 - SF7BW125 to SF10BW125
444
445 904.3 - SF7BW125 to SF10BW125
446
447 904.5 - SF7BW125 to SF10BW125
448
449 904.7 - SF7BW125 to SF10BW125
450
451 904.9 - SF7BW125 to SF10BW125
452
453 905.1 - SF7BW125 to SF10BW125
454
455 905.3 - SF7BW125 to SF10BW125
456
457
458 (% style="color:blue" %)**Downlink:**
459
460 923.3 - SF7BW500 to SF12BW500
461
462 923.9 - SF7BW500 to SF12BW500
463
464 924.5 - SF7BW500 to SF12BW500
465
466 925.1 - SF7BW500 to SF12BW500
467
468 925.7 - SF7BW500 to SF12BW500
469
470 926.3 - SF7BW500 to SF12BW500
471
472 926.9 - SF7BW500 to SF12BW500
473
474 927.5 - SF7BW500 to SF12BW500
475
476 923.3 - SF12BW500(RX2 downlink only)
477
478
479
480 )))
481
482 === 2.6.3  CN470-510 (CN470) ===
483
484 (((
485 Used in China, Default use CHE=1
486 )))
487
488 (((
489 (% style="color:blue" %)**Uplink:**
490 )))
491
492 (((
493 486.3 - SF7BW125 to SF12BW125
494 )))
495
496 (((
497 486.5 - SF7BW125 to SF12BW125
498 )))
499
500 (((
501 486.7 - SF7BW125 to SF12BW125
502 )))
503
504 (((
505 486.9 - SF7BW125 to SF12BW125
506 )))
507
508 (((
509 487.1 - SF7BW125 to SF12BW125
510 )))
511
512 (((
513 487.3 - SF7BW125 to SF12BW125
514 )))
515
516 (((
517 487.5 - SF7BW125 to SF12BW125
518 )))
519
520 (((
521 487.7 - SF7BW125 to SF12BW125
522 )))
523
524 (((
525
526 )))
527
528 (((
529 (% style="color:blue" %)**Downlink:**
530 )))
531
532 (((
533 506.7 - SF7BW125 to SF12BW125
534 )))
535
536 (((
537 506.9 - SF7BW125 to SF12BW125
538 )))
539
540 (((
541 507.1 - SF7BW125 to SF12BW125
542 )))
543
544 (((
545 507.3 - SF7BW125 to SF12BW125
546 )))
547
548 (((
549 507.5 - SF7BW125 to SF12BW125
550 )))
551
552 (((
553 507.7 - SF7BW125 to SF12BW125
554 )))
555
556 (((
557 507.9 - SF7BW125 to SF12BW125
558 )))
559
560 (((
561 508.1 - SF7BW125 to SF12BW125
562 )))
563
564 (((
565 505.3 - SF12BW125 (RX2 downlink only)
566 )))
567
568
569
570 === 2.6.4  AU915-928(AU915) ===
571
572 (((
573 Default use CHE=2
574
575 (% style="color:blue" %)**Uplink:**
576
577 916.8 - SF7BW125 to SF12BW125
578
579 917.0 - SF7BW125 to SF12BW125
580
581 917.2 - SF7BW125 to SF12BW125
582
583 917.4 - SF7BW125 to SF12BW125
584
585 917.6 - SF7BW125 to SF12BW125
586
587 917.8 - SF7BW125 to SF12BW125
588
589 918.0 - SF7BW125 to SF12BW125
590
591 918.2 - SF7BW125 to SF12BW125
592
593
594 (% style="color:blue" %)**Downlink:**
595
596 923.3 - SF7BW500 to SF12BW500
597
598 923.9 - SF7BW500 to SF12BW500
599
600 924.5 - SF7BW500 to SF12BW500
601
602 925.1 - SF7BW500 to SF12BW500
603
604 925.7 - SF7BW500 to SF12BW500
605
606 926.3 - SF7BW500 to SF12BW500
607
608 926.9 - SF7BW500 to SF12BW500
609
610 927.5 - SF7BW500 to SF12BW500
611
612 923.3 - SF12BW500(RX2 downlink only)
613
614
615
616 )))
617
618 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
619
620 (((
621 (% style="color:blue" %)**Default Uplink channel:**
622 )))
623
624 (((
625 923.2 - SF7BW125 to SF10BW125
626 )))
627
628 (((
629 923.4 - SF7BW125 to SF10BW125
630 )))
631
632 (((
633
634 )))
635
636 (((
637 (% style="color:blue" %)**Additional Uplink Channel**:
638 )))
639
640 (((
641 (OTAA mode, channel added by JoinAccept message)
642 )))
643
644 (((
645
646 )))
647
648 (((
649 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
650 )))
651
652 (((
653 922.2 - SF7BW125 to SF10BW125
654 )))
655
656 (((
657 922.4 - SF7BW125 to SF10BW125
658 )))
659
660 (((
661 922.6 - SF7BW125 to SF10BW125
662 )))
663
664 (((
665 922.8 - SF7BW125 to SF10BW125
666 )))
667
668 (((
669 923.0 - SF7BW125 to SF10BW125
670 )))
671
672 (((
673 922.0 - SF7BW125 to SF10BW125
674 )))
675
676 (((
677
678 )))
679
680 (((
681 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
682 )))
683
684 (((
685 923.6 - SF7BW125 to SF10BW125
686 )))
687
688 (((
689 923.8 - SF7BW125 to SF10BW125
690 )))
691
692 (((
693 924.0 - SF7BW125 to SF10BW125
694 )))
695
696 (((
697 924.2 - SF7BW125 to SF10BW125
698 )))
699
700 (((
701 924.4 - SF7BW125 to SF10BW125
702 )))
703
704 (((
705 924.6 - SF7BW125 to SF10BW125
706 )))
707
708 (((
709
710 )))
711
712 (((
713 (% style="color:blue" %)**Downlink:**
714 )))
715
716 (((
717 Uplink channels 1-8 (RX1)
718 )))
719
720 (((
721 923.2 - SF10BW125 (RX2)
722 )))
723
724
725
726 === 2.6.6  KR920-923 (KR920) ===
727
728 (((
729 (% style="color:blue" %)**Default channel:**
730 )))
731
732 (((
733 922.1 - SF7BW125 to SF12BW125
734 )))
735
736 (((
737 922.3 - SF7BW125 to SF12BW125
738 )))
739
740 (((
741 922.5 - SF7BW125 to SF12BW125
742 )))
743
744 (((
745
746 )))
747
748 (((
749 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
750 )))
751
752 (((
753 922.1 - SF7BW125 to SF12BW125
754 )))
755
756 (((
757 922.3 - SF7BW125 to SF12BW125
758 )))
759
760 (((
761 922.5 - SF7BW125 to SF12BW125
762 )))
763
764 (((
765 922.7 - SF7BW125 to SF12BW125
766 )))
767
768 (((
769 922.9 - SF7BW125 to SF12BW125
770 )))
771
772 (((
773 923.1 - SF7BW125 to SF12BW125
774 )))
775
776 (((
777 923.3 - SF7BW125 to SF12BW125
778 )))
779
780 (((
781
782 )))
783
784 (((
785 (% style="color:blue" %)**Downlink:**
786 )))
787
788 (((
789 Uplink channels 1-7(RX1)
790 )))
791
792 (((
793 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
794 )))
795
796
797
798 === 2.6.7  IN865-867 (IN865) ===
799
800 (((
801 (% style="color:blue" %)**Uplink:**
802 )))
803
804 (((
805 865.0625 - SF7BW125 to SF12BW125
806 )))
807
808 (((
809 865.4025 - SF7BW125 to SF12BW125
810 )))
811
812 (((
813 865.9850 - SF7BW125 to SF12BW125
814 )))
815
816 (((
817
818 )))
819
820 (((
821 (% style="color:blue" %)**Downlink:**
822 )))
823
824 (((
825 Uplink channels 1-3 (RX1)
826 )))
827
828 (((
829 866.550 - SF10BW125 (RX2)
830 )))
831
832
833
834 == 2.7  LED Indicator ==
835
836 The LDDS75 has an internal LED which is to show the status of different state.
837
838
839 * Blink once when device power on.
840 * The device detects the sensor and flashes 5 times.
841 * Solid ON for 5 seconds once device successful Join the network.
842 * Blink once when device transmit a packet.
843
844 == 2.8  ​Firmware Change Log ==
845
846
847 **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/]]
848
849
850 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
851
852
853
854 == 2.9  Mechanical ==
855
856
857 [[image:image-20220610172003-1.png]]
858
859
860 [[image:image-20220610172003-2.png]]
861
862
863
864 == 2.10  Battery Analysis ==
865
866 === 2.10.1  Battery Type ===
867
868 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.
869
870
871 The battery related documents as below:
872
873 * (((
874 [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
875 )))
876 * (((
877 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
878 )))
879 * (((
880 [[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]]
881 )))
882
883 [[image:image-20220610172400-3.png]]
884
885
886
887 === 2.10.2  Replace the battery ===
888
889 (((
890 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.
891 )))
892
893 (((
894
895 )))
896
897 (((
898 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)
899 )))
900
901
902
903 = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
904
905 (((
906 (((
907 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
908 )))
909 )))
910
911 * (((
912 (((
913 AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
914 )))
915 )))
916 * (((
917 (((
918 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
919 )))
920 )))
921
922 (((
923 (((
924
925 )))
926
927 (((
928 There are two kinds of commands to configure LDDS75, they are:
929 )))
930 )))
931
932 * (((
933 (((
934 (% style="color:#4f81bd" %)** General Commands**.
935 )))
936 )))
937
938 (((
939 (((
940 These commands are to configure:
941 )))
942 )))
943
944 * (((
945 (((
946 General system settings like: uplink interval.
947 )))
948 )))
949 * (((
950 (((
951 LoRaWAN protocol & radio related command.
952 )))
953 )))
954
955 (((
956 (((
957 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]]
958 )))
959 )))
960
961 (((
962 (((
963
964 )))
965 )))
966
967 * (((
968 (((
969 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
970 )))
971 )))
972
973 (((
974 (((
975 These commands only valid for LDDS75, as below:
976 )))
977 )))
978
979
980
981 == 3.1  Access AT Commands ==
982
983 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.
984
985 [[image:image-20220610172924-4.png||height="483" width="988"]]
986
987
988 Or if you have below board, use below connection:
989
990
991 [[image:image-20220610172924-5.png]]
992
993
994 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:
995
996
997 [[image:image-20220610172924-6.png||height="601" width="860"]]
998
999
1000
1001 == 3.2  Set Transmit Interval Time ==
1002
1003 Feature: Change LoRaWAN End Node Transmit Interval.
1004
1005 (% style="color:#037691" %)**AT Command: AT+TDC**
1006
1007 [[image:image-20220610173409-7.png]]
1008
1009
1010 (((
1011 (% style="color:#037691" %)**Downlink Command: 0x01**
1012 )))
1013
1014 (((
1015 (((
1016 Format: Command Code (0x01) followed by 3 bytes time value.
1017
1018 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1019
1020 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1021 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1022 )))
1023
1024
1025
1026 )))
1027
1028 == 3.3  Set Interrupt Mode ==
1029
1030 Feature, Set Interrupt mode for GPIO_EXIT.
1031
1032 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1033
1034 [[image:image-20220610174917-9.png]]
1035
1036
1037 (% style="color:#037691" %)**Downlink Command: 0x06**
1038
1039 Format: Command Code (0x06) followed by 3 bytes.
1040
1041 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1042
1043 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1044 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1045
1046
1047 = 4.  FAQ =
1048
1049 == 4.1  What is the frequency plan for LDDS75? ==
1050
1051 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"]]
1052
1053
1054
1055 == 4.2  How to change the LoRa Frequency Bands/Region ==
1056
1057 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1058 When downloading the images, choose the required image file for download. ​
1059
1060
1061
1062 == 4.3  Can I use LDDS75 in condensation environment? ==
1063
1064 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1065
1066
1067
1068 = 5.  Trouble Shooting =
1069
1070 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1071
1072 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1073
1074
1075 == 5.2  AT Command input doesn't work ==
1076
1077 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.
1078
1079 (((
1080
1081 )))
1082
1083
1084 = 6.  Order Info =
1085
1086
1087 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1088
1089
1090 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1091
1092 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1093 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1094 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1095 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1096 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1097 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1098 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1099 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1100
1101 (% style="color:blue" %)**YY**(%%): Battery Option
1102
1103 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1104 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1105
1106
1107 = 7. ​ Packing Info =
1108
1109
1110 **Package Includes**:
1111
1112 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1113
1114 **Dimension and weight**:
1115
1116 * Device Size: cm
1117 * Device Weight: g
1118 * Package Size / pcs : cm
1119 * Weight / pcs : g
1120
1121
1122 = 8.  ​Support =
1123
1124 * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1125 * Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]].

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