Version 150.4 by Xiaoling on 2022/06/11 08:35
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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 == 1.3  Specification ==
63
64 === 1.3.1  Rated environmental conditions ===
65
66 [[image:image-20220610154839-1.png]]
67
68 **Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
69
70 **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)**
71
72
73
74 === 1.3.2  Effective measurement range Reference beam pattern ===
75
76 **(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
77
78
79
80 [[image:1654852253176-749.png]]
81
82
83 **(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.**
84
85
86 [[image:1654852175653-550.png]](% style="display:none" %) ** **
87
88
89
90 == 1.5 ​ Applications ==
91
92 * Horizontal distance measurement
93 * Liquid level measurement
94 * Parking management system
95 * Object proximity and presence detection
96 * Intelligent trash can management system
97 * Robot obstacle avoidance
98 * Automatic control
99 * Sewer
100 * Bottom water level monitoring
101
102 == 1.6  Pin mapping and power on ==
103
104
105 [[image:1654847583902-256.png]]
106
107
108
109 = 2.  Configure LDDS75 to connect to LoRaWAN network =
110
111 == 2.1  How it works ==
112
113 (((
114 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
115 )))
116
117 (((
118 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.
119 )))
120
121
122
123 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
124
125 (((
126 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.
127 )))
128
129 (((
130 [[image:1654848616367-242.png]]
131 )))
132
133 (((
134 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.
135 )))
136
137 (((
138 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
139 )))
140
141 (((
142 Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
143 )))
144
145 [[image:image-20220607170145-1.jpeg]]
146
147
148 For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
149
150 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
151
152 **Add APP EUI in the application**
153
154 [[image:image-20220610161353-4.png]]
155
156 [[image:image-20220610161353-5.png]]
157
158 [[image:image-20220610161353-6.png]]
159
160
161 [[image:image-20220610161353-7.png]]
162
163
164 You can also choose to create the device manually.
165
166 [[image:image-20220610161538-8.png]]
167
168
169
170 **Add APP KEY and DEV EUI**
171
172 [[image:image-20220610161538-9.png]]
173
174
175
176 (% style="color:blue" %)**Step 2**(%%): Power on LDDS75
177
178
179 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
180
181 [[image:image-20220610161724-10.png]]
182
183
184 (((
185 (% 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.
186 )))
187
188 [[image:1654849068701-275.png]]
189
190
191
192 == 2.3  ​Uplink Payload ==
193
194 (((
195 LDDS75 will uplink payload via LoRaWAN with below payload format: 
196
197 Uplink payload includes in total 4 bytes.
198 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
199 )))
200
201 (((
202
203 )))
204
205 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
206 |=(% style="width: 62.5px;" %)(((
207 **Size (bytes)**
208 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
209 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
210 [[Distance>>||anchor="H2.3.3A0Distance"]]
211
212 (unit: mm)
213 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.4A0Distancesignalstrength"]]|(((
214 [[Temperature (Optional )>>||anchor="H2.3.5A0InterruptPin"]]
215 )))|[[Sensor Flag>>path:#Sensor_Flag]]
216
217 [[image:1654850511545-399.png]]
218
219
220
221 === 2.3.1  Battery Info ===
222
223
224 Check the battery voltage for LDDS75.
225
226 Ex1: 0x0B45 = 2885mV
227
228 Ex2: 0x0B49 = 2889mV
229
230
231
232 === 2.3.2  Distance ===
233
234 Get the distance. Flat object range 280mm - 7500mm.
235
236 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.**
237
238
239 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
240 * 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.
241
242 === 2.3.3  Interrupt Pin ===
243
244 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.
245
246 **Example:**
247
248 0x00: Normal uplink packet.
249
250 0x01: Interrupt Uplink Packet.
251
252
253
254 === 2.3.4  DS18B20 Temperature sensor ===
255
256 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
257
258 **Example**:
259
260 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
261
262 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
263
264 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
265
266
267
268 === 2.3.5  Sensor Flag ===
269
270 0x01: Detect Ultrasonic Sensor
271
272 0x00: No Ultrasonic Sensor
273
274
275
276
277 == 2.3.6  Decode payload in The Things Network ==
278
279 While using TTN network, you can add the payload format to decode the payload.
280
281
282 [[image:1654850829385-439.png]]
283
284 The payload decoder function for TTN V3 is here:
285
286 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/]]
287
288
289
290 == 2.4  Uplink Interval ==
291
292 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"]]
293
294
295
296 == 2.5  ​Show Data in DataCake IoT Server ==
297
298 (((
299 [[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:
300 )))
301
302 (((
303
304 )))
305
306 (((
307 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
308 )))
309
310 (((
311 (% 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:**
312 )))
313
314
315 [[image:1654592790040-760.png]]
316
317
318 [[image:1654592800389-571.png]]
319
320
321 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
322
323 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
324
325 [[image:1654851029373-510.png]]
326
327
328 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
329
330 [[image:image-20220610165129-11.png||height="595" width="1088"]]
331
332
333
334 == 2.6  Frequency Plans ==
335
336 (((
337 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.
338 )))
339
340
341
342 === 2.6.1  EU863-870 (EU868) ===
343
344 (((
345 (% style="color:blue" %)**Uplink:**
346 )))
347
348 (((
349 868.1 - SF7BW125 to SF12BW125
350 )))
351
352 (((
353 868.3 - SF7BW125 to SF12BW125 and SF7BW250
354 )))
355
356 (((
357 868.5 - SF7BW125 to SF12BW125
358 )))
359
360 (((
361 867.1 - SF7BW125 to SF12BW125
362 )))
363
364 (((
365 867.3 - SF7BW125 to SF12BW125
366 )))
367
368 (((
369 867.5 - SF7BW125 to SF12BW125
370 )))
371
372 (((
373 867.7 - SF7BW125 to SF12BW125
374 )))
375
376 (((
377 867.9 - SF7BW125 to SF12BW125
378 )))
379
380 (((
381 868.8 - FSK
382 )))
383
384 (((
385
386 )))
387
388 (((
389 (% style="color:blue" %)**Downlink:**
390 )))
391
392 (((
393 Uplink channels 1-9 (RX1)
394 )))
395
396 (((
397 869.525 - SF9BW125 (RX2 downlink only)
398 )))
399
400
401
402 === 2.6.2  US902-928(US915) ===
403
404 (((
405 Used in USA, Canada and South America. Default use CHE=2
406
407 (% style="color:blue" %)**Uplink:**
408
409 903.9 - SF7BW125 to SF10BW125
410
411 904.1 - SF7BW125 to SF10BW125
412
413 904.3 - SF7BW125 to SF10BW125
414
415 904.5 - SF7BW125 to SF10BW125
416
417 904.7 - SF7BW125 to SF10BW125
418
419 904.9 - SF7BW125 to SF10BW125
420
421 905.1 - SF7BW125 to SF10BW125
422
423 905.3 - SF7BW125 to SF10BW125
424
425
426 (% style="color:blue" %)**Downlink:**
427
428 923.3 - SF7BW500 to SF12BW500
429
430 923.9 - SF7BW500 to SF12BW500
431
432 924.5 - SF7BW500 to SF12BW500
433
434 925.1 - SF7BW500 to SF12BW500
435
436 925.7 - SF7BW500 to SF12BW500
437
438 926.3 - SF7BW500 to SF12BW500
439
440 926.9 - SF7BW500 to SF12BW500
441
442 927.5 - SF7BW500 to SF12BW500
443
444 923.3 - SF12BW500(RX2 downlink only)
445
446
447
448 )))
449
450 === 2.6.3  CN470-510 (CN470) ===
451
452 (((
453 Used in China, Default use CHE=1
454 )))
455
456 (((
457 (% style="color:blue" %)**Uplink:**
458 )))
459
460 (((
461 486.3 - SF7BW125 to SF12BW125
462 )))
463
464 (((
465 486.5 - SF7BW125 to SF12BW125
466 )))
467
468 (((
469 486.7 - SF7BW125 to SF12BW125
470 )))
471
472 (((
473 486.9 - SF7BW125 to SF12BW125
474 )))
475
476 (((
477 487.1 - SF7BW125 to SF12BW125
478 )))
479
480 (((
481 487.3 - SF7BW125 to SF12BW125
482 )))
483
484 (((
485 487.5 - SF7BW125 to SF12BW125
486 )))
487
488 (((
489 487.7 - SF7BW125 to SF12BW125
490 )))
491
492 (((
493
494 )))
495
496 (((
497 (% style="color:blue" %)**Downlink:**
498 )))
499
500 (((
501 506.7 - SF7BW125 to SF12BW125
502 )))
503
504 (((
505 506.9 - SF7BW125 to SF12BW125
506 )))
507
508 (((
509 507.1 - SF7BW125 to SF12BW125
510 )))
511
512 (((
513 507.3 - SF7BW125 to SF12BW125
514 )))
515
516 (((
517 507.5 - SF7BW125 to SF12BW125
518 )))
519
520 (((
521 507.7 - SF7BW125 to SF12BW125
522 )))
523
524 (((
525 507.9 - SF7BW125 to SF12BW125
526 )))
527
528 (((
529 508.1 - SF7BW125 to SF12BW125
530 )))
531
532 (((
533 505.3 - SF12BW125 (RX2 downlink only)
534 )))
535
536
537
538 === 2.6.4  AU915-928(AU915) ===
539
540 (((
541 Default use CHE=2
542
543 (% style="color:blue" %)**Uplink:**
544
545 916.8 - SF7BW125 to SF12BW125
546
547 917.0 - SF7BW125 to SF12BW125
548
549 917.2 - SF7BW125 to SF12BW125
550
551 917.4 - SF7BW125 to SF12BW125
552
553 917.6 - SF7BW125 to SF12BW125
554
555 917.8 - SF7BW125 to SF12BW125
556
557 918.0 - SF7BW125 to SF12BW125
558
559 918.2 - SF7BW125 to SF12BW125
560
561
562 (% style="color:blue" %)**Downlink:**
563
564 923.3 - SF7BW500 to SF12BW500
565
566 923.9 - SF7BW500 to SF12BW500
567
568 924.5 - SF7BW500 to SF12BW500
569
570 925.1 - SF7BW500 to SF12BW500
571
572 925.7 - SF7BW500 to SF12BW500
573
574 926.3 - SF7BW500 to SF12BW500
575
576 926.9 - SF7BW500 to SF12BW500
577
578 927.5 - SF7BW500 to SF12BW500
579
580 923.3 - SF12BW500(RX2 downlink only)
581
582
583
584 )))
585
586 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
587
588 (((
589 (% style="color:blue" %)**Default Uplink channel:**
590 )))
591
592 (((
593 923.2 - SF7BW125 to SF10BW125
594 )))
595
596 (((
597 923.4 - SF7BW125 to SF10BW125
598 )))
599
600 (((
601
602 )))
603
604 (((
605 (% style="color:blue" %)**Additional Uplink Channel**:
606 )))
607
608 (((
609 (OTAA mode, channel added by JoinAccept message)
610 )))
611
612 (((
613
614 )))
615
616 (((
617 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
618 )))
619
620 (((
621 922.2 - SF7BW125 to SF10BW125
622 )))
623
624 (((
625 922.4 - SF7BW125 to SF10BW125
626 )))
627
628 (((
629 922.6 - SF7BW125 to SF10BW125
630 )))
631
632 (((
633 922.8 - SF7BW125 to SF10BW125
634 )))
635
636 (((
637 923.0 - SF7BW125 to SF10BW125
638 )))
639
640 (((
641 922.0 - SF7BW125 to SF10BW125
642 )))
643
644 (((
645
646 )))
647
648 (((
649 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
650 )))
651
652 (((
653 923.6 - SF7BW125 to SF10BW125
654 )))
655
656 (((
657 923.8 - SF7BW125 to SF10BW125
658 )))
659
660 (((
661 924.0 - SF7BW125 to SF10BW125
662 )))
663
664 (((
665 924.2 - SF7BW125 to SF10BW125
666 )))
667
668 (((
669 924.4 - SF7BW125 to SF10BW125
670 )))
671
672 (((
673 924.6 - SF7BW125 to SF10BW125
674 )))
675
676 (((
677
678 )))
679
680 (((
681 (% style="color:blue" %)**Downlink:**
682 )))
683
684 (((
685 Uplink channels 1-8 (RX1)
686 )))
687
688 (((
689 923.2 - SF10BW125 (RX2)
690 )))
691
692
693
694 === 2.6.6  KR920-923 (KR920) ===
695
696 (((
697 (% style="color:blue" %)**Default channel:**
698 )))
699
700 (((
701 922.1 - SF7BW125 to SF12BW125
702 )))
703
704 (((
705 922.3 - SF7BW125 to SF12BW125
706 )))
707
708 (((
709 922.5 - SF7BW125 to SF12BW125
710 )))
711
712 (((
713
714 )))
715
716 (((
717 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
718 )))
719
720 (((
721 922.1 - SF7BW125 to SF12BW125
722 )))
723
724 (((
725 922.3 - SF7BW125 to SF12BW125
726 )))
727
728 (((
729 922.5 - SF7BW125 to SF12BW125
730 )))
731
732 (((
733 922.7 - SF7BW125 to SF12BW125
734 )))
735
736 (((
737 922.9 - SF7BW125 to SF12BW125
738 )))
739
740 (((
741 923.1 - SF7BW125 to SF12BW125
742 )))
743
744 (((
745 923.3 - SF7BW125 to SF12BW125
746 )))
747
748 (((
749
750 )))
751
752 (((
753 (% style="color:blue" %)**Downlink:**
754 )))
755
756 (((
757 Uplink channels 1-7(RX1)
758 )))
759
760 (((
761 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
762 )))
763
764
765
766 === 2.6.7  IN865-867 (IN865) ===
767
768 (((
769 (% style="color:blue" %)**Uplink:**
770 )))
771
772 (((
773 865.0625 - SF7BW125 to SF12BW125
774 )))
775
776 (((
777 865.4025 - SF7BW125 to SF12BW125
778 )))
779
780 (((
781 865.9850 - SF7BW125 to SF12BW125
782 )))
783
784 (((
785
786 )))
787
788 (((
789 (% style="color:blue" %)**Downlink:**
790 )))
791
792 (((
793 Uplink channels 1-3 (RX1)
794 )))
795
796 (((
797 866.550 - SF10BW125 (RX2)
798 )))
799
800
801
802 == 2.7  LED Indicator ==
803
804 The LDDS75 has an internal LED which is to show the status of different state.
805
806
807 * Blink once when device power on.
808 * The device detects the sensor and flashes 5 times.
809 * Solid ON for 5 seconds once device successful Join the network.
810 * Blink once when device transmit a packet.
811
812 == 2.8  ​Firmware Change Log ==
813
814
815 **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/]]
816
817
818 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
819
820
821
822 == 2.9  Mechanical ==
823
824
825 [[image:image-20220610172003-1.png]]
826
827 [[image:image-20220610172003-2.png]]
828
829
830 == 2.10  Battery Analysis ==
831
832 === 2.10.1  Battery Type ===
833
834 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.
835
836
837 The battery related documents as below:
838
839 * (((
840 [[ Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
841 )))
842 * (((
843 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
844 )))
845 * (((
846 [[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]]
847 )))
848
849 [[image:image-20220610172400-3.png]]
850
851
852
853 === 2.10.2  Replace the battery ===
854
855 (((
856 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.
857 )))
858
859 (((
860
861 )))
862
863 (((
864 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)
865 )))
866
867
868
869 = 3.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
870
871 (((
872 (((
873 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
874 )))
875 )))
876
877 * (((
878 (((
879 AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
880 )))
881 )))
882 * (((
883 (((
884 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
885 )))
886 )))
887
888 (((
889 (((
890
891 )))
892
893 (((
894 There are two kinds of commands to configure LDDS75, they are:
895 )))
896 )))
897
898 * (((
899 (((
900 (% style="color:#4f81bd" %)** General Commands**.
901 )))
902 )))
903
904 (((
905 (((
906 These commands are to configure:
907 )))
908 )))
909
910 * (((
911 (((
912 General system settings like: uplink interval.
913 )))
914 )))
915 * (((
916 (((
917 LoRaWAN protocol & radio related command.
918 )))
919 )))
920
921 (((
922 (((
923 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]]
924 )))
925 )))
926
927 (((
928 (((
929
930 )))
931 )))
932
933 * (((
934 (((
935 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
936 )))
937 )))
938
939 (((
940 (((
941 These commands only valid for LDDS75, as below:
942 )))
943 )))
944
945
946
947 == 3.1  Access AT Commands ==
948
949 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.
950
951 [[image:image-20220610172924-4.png||height="483" width="988"]]
952
953
954 Or if you have below board, use below connection:
955
956
957 [[image:image-20220610172924-5.png]]
958
959
960 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:
961
962
963 [[image:image-20220610172924-6.png||height="601" width="860"]]
964
965
966
967 == 3.2  Set Transmit Interval Time ==
968
969 Feature: Change LoRaWAN End Node Transmit Interval.
970
971 (% style="color:#037691" %)**AT Command: AT+TDC**
972
973 [[image:image-20220610173409-7.png]]
974
975
976 (((
977 (% style="color:#037691" %)**Downlink Command: 0x01**
978 )))
979
980 (((
981 (((
982 Format: Command Code (0x01) followed by 3 bytes time value.
983
984 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
985
986 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
987 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
988 )))
989
990
991
992 )))
993
994 == 3.3  Set Interrupt Mode ==
995
996 Feature, Set Interrupt mode for GPIO_EXIT.
997
998 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
999
1000 [[image:image-20220610174917-9.png]]
1001
1002
1003 (% style="color:#037691" %)**Downlink Command: 0x06**
1004
1005 Format: Command Code (0x06) followed by 3 bytes.
1006
1007 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1008
1009 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1010 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1011
1012
1013 = 4.  FAQ =
1014
1015 == 4.1  What is the frequency plan for LDDS75? ==
1016
1017 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"]]
1018
1019
1020
1021 == 4.2  How to change the LoRa Frequency Bands/Region ==
1022
1023 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1024 When downloading the images, choose the required image file for download. ​
1025
1026
1027
1028 == 4.3  Can I use LDDS75 in condensation environment? ==
1029
1030 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1031
1032
1033
1034 = 5.  Trouble Shooting =
1035
1036 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1037
1038 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1039
1040
1041 == 5.2  AT Command input doesn't work ==
1042
1043 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.
1044
1045 (((
1046
1047 )))
1048
1049
1050 = 6.  Order Info =
1051
1052
1053 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1054
1055
1056 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1057
1058 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1059 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1060 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1061 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1062 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1063 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1064 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1065 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1066
1067 (% style="color:blue" %)**YY**(%%): Battery Option
1068
1069 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1070 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1071
1072
1073 = 7. ​ Packing Info =
1074
1075
1076 **Package Includes**:
1077
1078 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1079
1080 **Dimension and weight**:
1081
1082 * Device Size: cm
1083 * Device Weight: g
1084 * Package Size / pcs : cm
1085 * Weight / pcs : g
1086
1087
1088 = 8.  ​Support =
1089
1090 * 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.
1091 * 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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