Version 150.8 by Xiaoling on 2022/06/11 08:37
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1 (% style="text-align:center" %)
2 [[image:1654846127817-788.png]]
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 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.
24
25
26 It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
27
28
29 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.
30
31
32 LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
33
34
35 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.
36
37
38 (% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
39 )))
40 )))
41
42
43 [[image:1654847051249-359.png]]
44
45
46
47 == ​1.2  Features ==
48
49 * LoRaWAN 1.0.3 Class A
50 * Ultra low power consumption
51 * Distance Detection by Ultrasonic technology
52 * Flat object range 280mm - 7500mm
53 * Accuracy: ±(1cm+S*0.3%) (S: Distance)
54 * Cable Length : 25cm
55 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
56 * AT Commands to change parameters
57 * Uplink on periodically
58 * Downlink to change configure
59 * IP66 Waterproof Enclosure
60 * 4000mAh or 8500mAh Battery for long term use
61
62
63
64
65 == 1.3  Specification ==
66
67 === 1.3.1  Rated environmental conditions ===
68
69 [[image:image-20220610154839-1.png]]
70
71 **Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
72
73 **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)**
74
75
76
77 === 1.3.2  Effective measurement range Reference beam pattern ===
78
79 **(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
80
81
82
83 [[image:1654852253176-749.png]]
84
85
86 **(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.**
87
88
89 [[image:1654852175653-550.png]](% style="display:none" %) ** **
90
91
92
93 == 1.5 ​ Applications ==
94
95 * Horizontal distance measurement
96 * Liquid level measurement
97 * Parking management system
98 * Object proximity and presence detection
99 * Intelligent trash can management system
100 * Robot obstacle avoidance
101 * Automatic control
102 * Sewer
103 * Bottom water level monitoring
104
105 == 1.6  Pin mapping and power on ==
106
107
108 [[image:1654847583902-256.png]]
109
110
111
112 = 2.  Configure LDDS75 to connect to LoRaWAN network =
113
114 == 2.1  How it works ==
115
116 (((
117 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
118 )))
119
120 (((
121 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.
122 )))
123
124
125
126 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
127
128 (((
129 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.
130 )))
131
132 (((
133 [[image:1654848616367-242.png]]
134 )))
135
136 (((
137 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.
138 )))
139
140 (((
141 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
142 )))
143
144 (((
145 Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
146 )))
147
148 [[image:image-20220607170145-1.jpeg]]
149
150
151 For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
152
153 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
154
155 **Add APP EUI in the application**
156
157 [[image:image-20220610161353-4.png]]
158
159 [[image:image-20220610161353-5.png]]
160
161 [[image:image-20220610161353-6.png]]
162
163
164 [[image:image-20220610161353-7.png]]
165
166
167 You can also choose to create the device manually.
168
169 [[image:image-20220610161538-8.png]]
170
171
172
173 **Add APP KEY and DEV EUI**
174
175 [[image:image-20220610161538-9.png]]
176
177
178
179 (% style="color:blue" %)**Step 2**(%%): Power on LDDS75
180
181
182 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
183
184 [[image:image-20220610161724-10.png]]
185
186
187 (((
188 (% 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.
189 )))
190
191 [[image:1654849068701-275.png]]
192
193
194
195 == 2.3  ​Uplink Payload ==
196
197 (((
198 LDDS75 will uplink payload via LoRaWAN with below payload format: 
199
200 Uplink payload includes in total 4 bytes.
201 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
202 )))
203
204 (((
205
206 )))
207
208 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
209 |=(% style="width: 62.5px;" %)(((
210 **Size (bytes)**
211 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
212 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
213 [[Distance>>||anchor="H2.3.3A0Distance"]]
214
215 (unit: mm)
216 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.4A0Distancesignalstrength"]]|(((
217 [[Temperature (Optional )>>||anchor="H2.3.5A0InterruptPin"]]
218 )))|[[Sensor Flag>>path:#Sensor_Flag]]
219
220 [[image:1654850511545-399.png]]
221
222
223
224 === 2.3.1  Battery Info ===
225
226
227 Check the battery voltage for LDDS75.
228
229 Ex1: 0x0B45 = 2885mV
230
231 Ex2: 0x0B49 = 2889mV
232
233
234
235 === 2.3.2  Distance ===
236
237 Get the distance. Flat object range 280mm - 7500mm.
238
239 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.**
240
241
242 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
243 * 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.
244
245 === 2.3.3  Interrupt Pin ===
246
247 This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H4.2A0SetInterruptMode"]] for the hardware and software set up.
248
249 **Example:**
250
251 0x00: Normal uplink packet.
252
253 0x01: Interrupt Uplink Packet.
254
255
256
257 === 2.3.4  DS18B20 Temperature sensor ===
258
259 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
260
261 **Example**:
262
263 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
264
265 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
266
267 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
268
269
270
271 === 2.3.5  Sensor Flag ===
272
273 0x01: Detect Ultrasonic Sensor
274
275 0x00: No Ultrasonic Sensor
276
277
278
279 === 2.3.6  Decode payload in The Things Network ===
280
281 While using TTN network, you can add the payload format to decode the payload.
282
283
284 [[image:1654850829385-439.png]]
285
286 The payload decoder function for TTN V3 is here:
287
288 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/]]
289
290
291
292 == 2.4  Uplink Interval ==
293
294 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"]]
295
296
297
298 == 2.5  ​Show Data in DataCake IoT Server ==
299
300 (((
301 [[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:
302 )))
303
304 (((
305
306 )))
307
308 (((
309 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
310 )))
311
312 (((
313 (% 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:**
314 )))
315
316
317 [[image:1654592790040-760.png]]
318
319
320 [[image:1654592800389-571.png]]
321
322
323 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
324
325 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
326
327 [[image:1654851029373-510.png]]
328
329
330 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
331
332 [[image:image-20220610165129-11.png||height="595" width="1088"]]
333
334
335
336 == 2.6  Frequency Plans ==
337
338 (((
339 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.
340 )))
341
342
343
344 === 2.6.1  EU863-870 (EU868) ===
345
346 (((
347 (% style="color:blue" %)**Uplink:**
348 )))
349
350 (((
351 868.1 - SF7BW125 to SF12BW125
352 )))
353
354 (((
355 868.3 - SF7BW125 to SF12BW125 and SF7BW250
356 )))
357
358 (((
359 868.5 - SF7BW125 to SF12BW125
360 )))
361
362 (((
363 867.1 - SF7BW125 to SF12BW125
364 )))
365
366 (((
367 867.3 - SF7BW125 to SF12BW125
368 )))
369
370 (((
371 867.5 - SF7BW125 to SF12BW125
372 )))
373
374 (((
375 867.7 - SF7BW125 to SF12BW125
376 )))
377
378 (((
379 867.9 - SF7BW125 to SF12BW125
380 )))
381
382 (((
383 868.8 - FSK
384 )))
385
386 (((
387
388 )))
389
390 (((
391 (% style="color:blue" %)**Downlink:**
392 )))
393
394 (((
395 Uplink channels 1-9 (RX1)
396 )))
397
398 (((
399 869.525 - SF9BW125 (RX2 downlink only)
400 )))
401
402
403
404 === 2.6.2  US902-928(US915) ===
405
406 (((
407 Used in USA, Canada and South America. Default use CHE=2
408
409 (% style="color:blue" %)**Uplink:**
410
411 903.9 - SF7BW125 to SF10BW125
412
413 904.1 - SF7BW125 to SF10BW125
414
415 904.3 - SF7BW125 to SF10BW125
416
417 904.5 - SF7BW125 to SF10BW125
418
419 904.7 - SF7BW125 to SF10BW125
420
421 904.9 - SF7BW125 to SF10BW125
422
423 905.1 - SF7BW125 to SF10BW125
424
425 905.3 - SF7BW125 to SF10BW125
426
427
428 (% style="color:blue" %)**Downlink:**
429
430 923.3 - SF7BW500 to SF12BW500
431
432 923.9 - SF7BW500 to SF12BW500
433
434 924.5 - SF7BW500 to SF12BW500
435
436 925.1 - SF7BW500 to SF12BW500
437
438 925.7 - SF7BW500 to SF12BW500
439
440 926.3 - SF7BW500 to SF12BW500
441
442 926.9 - SF7BW500 to SF12BW500
443
444 927.5 - SF7BW500 to SF12BW500
445
446 923.3 - SF12BW500(RX2 downlink only)
447
448
449
450 )))
451
452 === 2.6.3  CN470-510 (CN470) ===
453
454 (((
455 Used in China, Default use CHE=1
456 )))
457
458 (((
459 (% style="color:blue" %)**Uplink:**
460 )))
461
462 (((
463 486.3 - SF7BW125 to SF12BW125
464 )))
465
466 (((
467 486.5 - SF7BW125 to SF12BW125
468 )))
469
470 (((
471 486.7 - SF7BW125 to SF12BW125
472 )))
473
474 (((
475 486.9 - SF7BW125 to SF12BW125
476 )))
477
478 (((
479 487.1 - SF7BW125 to SF12BW125
480 )))
481
482 (((
483 487.3 - SF7BW125 to SF12BW125
484 )))
485
486 (((
487 487.5 - SF7BW125 to SF12BW125
488 )))
489
490 (((
491 487.7 - SF7BW125 to SF12BW125
492 )))
493
494 (((
495
496 )))
497
498 (((
499 (% style="color:blue" %)**Downlink:**
500 )))
501
502 (((
503 506.7 - SF7BW125 to SF12BW125
504 )))
505
506 (((
507 506.9 - SF7BW125 to SF12BW125
508 )))
509
510 (((
511 507.1 - SF7BW125 to SF12BW125
512 )))
513
514 (((
515 507.3 - SF7BW125 to SF12BW125
516 )))
517
518 (((
519 507.5 - SF7BW125 to SF12BW125
520 )))
521
522 (((
523 507.7 - SF7BW125 to SF12BW125
524 )))
525
526 (((
527 507.9 - SF7BW125 to SF12BW125
528 )))
529
530 (((
531 508.1 - SF7BW125 to SF12BW125
532 )))
533
534 (((
535 505.3 - SF12BW125 (RX2 downlink only)
536 )))
537
538
539
540 === 2.6.4  AU915-928(AU915) ===
541
542 (((
543 Default use CHE=2
544
545 (% style="color:blue" %)**Uplink:**
546
547 916.8 - SF7BW125 to SF12BW125
548
549 917.0 - SF7BW125 to SF12BW125
550
551 917.2 - SF7BW125 to SF12BW125
552
553 917.4 - SF7BW125 to SF12BW125
554
555 917.6 - SF7BW125 to SF12BW125
556
557 917.8 - SF7BW125 to SF12BW125
558
559 918.0 - SF7BW125 to SF12BW125
560
561 918.2 - SF7BW125 to SF12BW125
562
563
564 (% style="color:blue" %)**Downlink:**
565
566 923.3 - SF7BW500 to SF12BW500
567
568 923.9 - SF7BW500 to SF12BW500
569
570 924.5 - SF7BW500 to SF12BW500
571
572 925.1 - SF7BW500 to SF12BW500
573
574 925.7 - SF7BW500 to SF12BW500
575
576 926.3 - SF7BW500 to SF12BW500
577
578 926.9 - SF7BW500 to SF12BW500
579
580 927.5 - SF7BW500 to SF12BW500
581
582 923.3 - SF12BW500(RX2 downlink only)
583
584
585
586 )))
587
588 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
589
590 (((
591 (% style="color:blue" %)**Default Uplink channel:**
592 )))
593
594 (((
595 923.2 - SF7BW125 to SF10BW125
596 )))
597
598 (((
599 923.4 - SF7BW125 to SF10BW125
600 )))
601
602 (((
603
604 )))
605
606 (((
607 (% style="color:blue" %)**Additional Uplink Channel**:
608 )))
609
610 (((
611 (OTAA mode, channel added by JoinAccept message)
612 )))
613
614 (((
615
616 )))
617
618 (((
619 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
620 )))
621
622 (((
623 922.2 - SF7BW125 to SF10BW125
624 )))
625
626 (((
627 922.4 - SF7BW125 to SF10BW125
628 )))
629
630 (((
631 922.6 - SF7BW125 to SF10BW125
632 )))
633
634 (((
635 922.8 - SF7BW125 to SF10BW125
636 )))
637
638 (((
639 923.0 - SF7BW125 to SF10BW125
640 )))
641
642 (((
643 922.0 - SF7BW125 to SF10BW125
644 )))
645
646 (((
647
648 )))
649
650 (((
651 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
652 )))
653
654 (((
655 923.6 - SF7BW125 to SF10BW125
656 )))
657
658 (((
659 923.8 - SF7BW125 to SF10BW125
660 )))
661
662 (((
663 924.0 - SF7BW125 to SF10BW125
664 )))
665
666 (((
667 924.2 - SF7BW125 to SF10BW125
668 )))
669
670 (((
671 924.4 - SF7BW125 to SF10BW125
672 )))
673
674 (((
675 924.6 - SF7BW125 to SF10BW125
676 )))
677
678 (((
679
680 )))
681
682 (((
683 (% style="color:blue" %)**Downlink:**
684 )))
685
686 (((
687 Uplink channels 1-8 (RX1)
688 )))
689
690 (((
691 923.2 - SF10BW125 (RX2)
692 )))
693
694
695
696 === 2.6.6  KR920-923 (KR920) ===
697
698 (((
699 (% style="color:blue" %)**Default channel:**
700 )))
701
702 (((
703 922.1 - SF7BW125 to SF12BW125
704 )))
705
706 (((
707 922.3 - SF7BW125 to SF12BW125
708 )))
709
710 (((
711 922.5 - SF7BW125 to SF12BW125
712 )))
713
714 (((
715
716 )))
717
718 (((
719 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
720 )))
721
722 (((
723 922.1 - SF7BW125 to SF12BW125
724 )))
725
726 (((
727 922.3 - SF7BW125 to SF12BW125
728 )))
729
730 (((
731 922.5 - SF7BW125 to SF12BW125
732 )))
733
734 (((
735 922.7 - SF7BW125 to SF12BW125
736 )))
737
738 (((
739 922.9 - SF7BW125 to SF12BW125
740 )))
741
742 (((
743 923.1 - SF7BW125 to SF12BW125
744 )))
745
746 (((
747 923.3 - SF7BW125 to SF12BW125
748 )))
749
750 (((
751
752 )))
753
754 (((
755 (% style="color:blue" %)**Downlink:**
756 )))
757
758 (((
759 Uplink channels 1-7(RX1)
760 )))
761
762 (((
763 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
764 )))
765
766
767
768 === 2.6.7  IN865-867 (IN865) ===
769
770 (((
771 (% style="color:blue" %)**Uplink:**
772 )))
773
774 (((
775 865.0625 - SF7BW125 to SF12BW125
776 )))
777
778 (((
779 865.4025 - SF7BW125 to SF12BW125
780 )))
781
782 (((
783 865.9850 - SF7BW125 to SF12BW125
784 )))
785
786 (((
787
788 )))
789
790 (((
791 (% style="color:blue" %)**Downlink:**
792 )))
793
794 (((
795 Uplink channels 1-3 (RX1)
796 )))
797
798 (((
799 866.550 - SF10BW125 (RX2)
800 )))
801
802
803
804 == 2.7  LED Indicator ==
805
806 The LDDS75 has an internal LED which is to show the status of different state.
807
808
809 * Blink once when device power on.
810 * The device detects the sensor and flashes 5 times.
811 * Solid ON for 5 seconds once device successful Join the network.
812 * Blink once when device transmit a packet.
813
814 == 2.8  ​Firmware Change Log ==
815
816
817 **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/]]
818
819
820 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
821
822
823
824 == 2.9  Mechanical ==
825
826
827 [[image:image-20220610172003-1.png]]
828
829 [[image:image-20220610172003-2.png]]
830
831
832 == 2.10  Battery Analysis ==
833
834 === 2.10.1  Battery Type ===
835
836 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.
837
838
839 The battery related documents as below:
840
841 * (((
842 [[ Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
843 )))
844 * (((
845 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
846 )))
847 * (((
848 [[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]]
849 )))
850
851 [[image:image-20220610172400-3.png]]
852
853
854
855 === 2.10.2  Replace the battery ===
856
857 (((
858 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.
859 )))
860
861 (((
862
863 )))
864
865 (((
866 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)
867 )))
868
869
870
871 = 3.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
872
873 (((
874 (((
875 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
876 )))
877 )))
878
879 * (((
880 (((
881 AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
882 )))
883 )))
884 * (((
885 (((
886 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
887 )))
888 )))
889
890 (((
891 (((
892
893 )))
894
895 (((
896 There are two kinds of commands to configure LDDS75, they are:
897 )))
898 )))
899
900 * (((
901 (((
902 (% style="color:#4f81bd" %)** General Commands**.
903 )))
904 )))
905
906 (((
907 (((
908 These commands are to configure:
909 )))
910 )))
911
912 * (((
913 (((
914 General system settings like: uplink interval.
915 )))
916 )))
917 * (((
918 (((
919 LoRaWAN protocol & radio related command.
920 )))
921 )))
922
923 (((
924 (((
925 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]]
926 )))
927 )))
928
929 (((
930 (((
931
932 )))
933 )))
934
935 * (((
936 (((
937 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
938 )))
939 )))
940
941 (((
942 (((
943 These commands only valid for LDDS75, as below:
944 )))
945 )))
946
947
948
949 == 3.1  Access AT Commands ==
950
951 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.
952
953 [[image:image-20220610172924-4.png||height="483" width="988"]]
954
955
956 Or if you have below board, use below connection:
957
958
959 [[image:image-20220610172924-5.png]]
960
961
962 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:
963
964
965 [[image:image-20220610172924-6.png||height="601" width="860"]]
966
967
968
969 == 3.2  Set Transmit Interval Time ==
970
971 Feature: Change LoRaWAN End Node Transmit Interval.
972
973 (% style="color:#037691" %)**AT Command: AT+TDC**
974
975 [[image:image-20220610173409-7.png]]
976
977
978 (((
979 (% style="color:#037691" %)**Downlink Command: 0x01**
980 )))
981
982 (((
983 (((
984 Format: Command Code (0x01) followed by 3 bytes time value.
985
986 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
987
988 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
989 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
990 )))
991
992
993
994 )))
995
996 == 3.3  Set Interrupt Mode ==
997
998 Feature, Set Interrupt mode for GPIO_EXIT.
999
1000 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1001
1002 [[image:image-20220610174917-9.png]]
1003
1004
1005 (% style="color:#037691" %)**Downlink Command: 0x06**
1006
1007 Format: Command Code (0x06) followed by 3 bytes.
1008
1009 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1010
1011 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1012 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1013
1014
1015 = 4.  FAQ =
1016
1017 == 4.1  What is the frequency plan for LDDS75? ==
1018
1019 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"]]
1020
1021
1022
1023 == 4.2  How to change the LoRa Frequency Bands/Region ==
1024
1025 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1026 When downloading the images, choose the required image file for download. ​
1027
1028
1029
1030 == 4.3  Can I use LDDS75 in condensation environment? ==
1031
1032 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1033
1034
1035
1036 = 5.  Trouble Shooting =
1037
1038 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1039
1040 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1041
1042
1043 == 5.2  AT Command input doesn't work ==
1044
1045 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.
1046
1047 (((
1048
1049 )))
1050
1051
1052 = 6.  Order Info =
1053
1054
1055 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1056
1057
1058 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1059
1060 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1061 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1062 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1063 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1064 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1065 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1066 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1067 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1068
1069 (% style="color:blue" %)**YY**(%%): Battery Option
1070
1071 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1072 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1073
1074
1075 = 7. ​ Packing Info =
1076
1077
1078 **Package Includes**:
1079
1080 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1081
1082 **Dimension and weight**:
1083
1084 * Device Size: cm
1085 * Device Weight: g
1086 * Package Size / pcs : cm
1087 * Weight / pcs : g
1088
1089
1090 = 8.  ​Support =
1091
1092 * 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.
1093 * 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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