Version 150.2 by Xiaoling on 2022/06/11 08:33
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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 (% class="wikigeneratedid" %)
276
277
278 (% class="wikigeneratedid" id="H2.3.6A0DecodepayloadinTheThingsNetwork" %)
279
280 (% style="color:inherit; font-family:inherit" %)2.3.6  Decode payload in The Things Network
281
282 While using TTN network, you can add the payload format to decode the payload.
283
284
285 [[image:1654850829385-439.png]]
286
287 The payload decoder function for TTN V3 is here:
288
289 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/]]
290
291
292
293 == 2.4  Uplink Interval ==
294
295 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"]]
296
297
298
299 == 2.5  ​Show Data in DataCake IoT Server ==
300
301 (((
302 [[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:
303 )))
304
305 (((
306
307 )))
308
309 (((
310 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
311 )))
312
313 (((
314 (% 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:**
315 )))
316
317
318 [[image:1654592790040-760.png]]
319
320
321 [[image:1654592800389-571.png]]
322
323
324 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
325
326 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
327
328 [[image:1654851029373-510.png]]
329
330
331 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
332
333 [[image:image-20220610165129-11.png||height="595" width="1088"]]
334
335
336
337 == 2.6  Frequency Plans ==
338
339 (((
340 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.
341 )))
342
343
344
345 === 2.6.1  EU863-870 (EU868) ===
346
347 (((
348 (% style="color:blue" %)**Uplink:**
349 )))
350
351 (((
352 868.1 - SF7BW125 to SF12BW125
353 )))
354
355 (((
356 868.3 - SF7BW125 to SF12BW125 and SF7BW250
357 )))
358
359 (((
360 868.5 - SF7BW125 to SF12BW125
361 )))
362
363 (((
364 867.1 - SF7BW125 to SF12BW125
365 )))
366
367 (((
368 867.3 - SF7BW125 to SF12BW125
369 )))
370
371 (((
372 867.5 - SF7BW125 to SF12BW125
373 )))
374
375 (((
376 867.7 - SF7BW125 to SF12BW125
377 )))
378
379 (((
380 867.9 - SF7BW125 to SF12BW125
381 )))
382
383 (((
384 868.8 - FSK
385 )))
386
387 (((
388
389 )))
390
391 (((
392 (% style="color:blue" %)**Downlink:**
393 )))
394
395 (((
396 Uplink channels 1-9 (RX1)
397 )))
398
399 (((
400 869.525 - SF9BW125 (RX2 downlink only)
401 )))
402
403
404
405 === 2.6.2  US902-928(US915) ===
406
407 (((
408 Used in USA, Canada and South America. Default use CHE=2
409
410 (% style="color:blue" %)**Uplink:**
411
412 903.9 - SF7BW125 to SF10BW125
413
414 904.1 - SF7BW125 to SF10BW125
415
416 904.3 - SF7BW125 to SF10BW125
417
418 904.5 - SF7BW125 to SF10BW125
419
420 904.7 - SF7BW125 to SF10BW125
421
422 904.9 - SF7BW125 to SF10BW125
423
424 905.1 - SF7BW125 to SF10BW125
425
426 905.3 - SF7BW125 to SF10BW125
427
428
429 (% style="color:blue" %)**Downlink:**
430
431 923.3 - SF7BW500 to SF12BW500
432
433 923.9 - SF7BW500 to SF12BW500
434
435 924.5 - SF7BW500 to SF12BW500
436
437 925.1 - SF7BW500 to SF12BW500
438
439 925.7 - SF7BW500 to SF12BW500
440
441 926.3 - SF7BW500 to SF12BW500
442
443 926.9 - SF7BW500 to SF12BW500
444
445 927.5 - SF7BW500 to SF12BW500
446
447 923.3 - SF12BW500(RX2 downlink only)
448
449
450
451 )))
452
453 === 2.6.3  CN470-510 (CN470) ===
454
455 (((
456 Used in China, Default use CHE=1
457 )))
458
459 (((
460 (% style="color:blue" %)**Uplink:**
461 )))
462
463 (((
464 486.3 - SF7BW125 to SF12BW125
465 )))
466
467 (((
468 486.5 - SF7BW125 to SF12BW125
469 )))
470
471 (((
472 486.7 - SF7BW125 to SF12BW125
473 )))
474
475 (((
476 486.9 - SF7BW125 to SF12BW125
477 )))
478
479 (((
480 487.1 - SF7BW125 to SF12BW125
481 )))
482
483 (((
484 487.3 - SF7BW125 to SF12BW125
485 )))
486
487 (((
488 487.5 - SF7BW125 to SF12BW125
489 )))
490
491 (((
492 487.7 - SF7BW125 to SF12BW125
493 )))
494
495 (((
496
497 )))
498
499 (((
500 (% style="color:blue" %)**Downlink:**
501 )))
502
503 (((
504 506.7 - SF7BW125 to SF12BW125
505 )))
506
507 (((
508 506.9 - SF7BW125 to SF12BW125
509 )))
510
511 (((
512 507.1 - SF7BW125 to SF12BW125
513 )))
514
515 (((
516 507.3 - SF7BW125 to SF12BW125
517 )))
518
519 (((
520 507.5 - SF7BW125 to SF12BW125
521 )))
522
523 (((
524 507.7 - SF7BW125 to SF12BW125
525 )))
526
527 (((
528 507.9 - SF7BW125 to SF12BW125
529 )))
530
531 (((
532 508.1 - SF7BW125 to SF12BW125
533 )))
534
535 (((
536 505.3 - SF12BW125 (RX2 downlink only)
537 )))
538
539
540
541 === 2.6.4  AU915-928(AU915) ===
542
543 (((
544 Default use CHE=2
545
546 (% style="color:blue" %)**Uplink:**
547
548 916.8 - SF7BW125 to SF12BW125
549
550 917.0 - SF7BW125 to SF12BW125
551
552 917.2 - SF7BW125 to SF12BW125
553
554 917.4 - SF7BW125 to SF12BW125
555
556 917.6 - SF7BW125 to SF12BW125
557
558 917.8 - SF7BW125 to SF12BW125
559
560 918.0 - SF7BW125 to SF12BW125
561
562 918.2 - SF7BW125 to SF12BW125
563
564
565 (% style="color:blue" %)**Downlink:**
566
567 923.3 - SF7BW500 to SF12BW500
568
569 923.9 - SF7BW500 to SF12BW500
570
571 924.5 - SF7BW500 to SF12BW500
572
573 925.1 - SF7BW500 to SF12BW500
574
575 925.7 - SF7BW500 to SF12BW500
576
577 926.3 - SF7BW500 to SF12BW500
578
579 926.9 - SF7BW500 to SF12BW500
580
581 927.5 - SF7BW500 to SF12BW500
582
583 923.3 - SF12BW500(RX2 downlink only)
584
585
586
587 )))
588
589 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
590
591 (((
592 (% style="color:blue" %)**Default Uplink channel:**
593 )))
594
595 (((
596 923.2 - SF7BW125 to SF10BW125
597 )))
598
599 (((
600 923.4 - SF7BW125 to SF10BW125
601 )))
602
603 (((
604
605 )))
606
607 (((
608 (% style="color:blue" %)**Additional Uplink Channel**:
609 )))
610
611 (((
612 (OTAA mode, channel added by JoinAccept message)
613 )))
614
615 (((
616
617 )))
618
619 (((
620 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
621 )))
622
623 (((
624 922.2 - SF7BW125 to SF10BW125
625 )))
626
627 (((
628 922.4 - SF7BW125 to SF10BW125
629 )))
630
631 (((
632 922.6 - SF7BW125 to SF10BW125
633 )))
634
635 (((
636 922.8 - SF7BW125 to SF10BW125
637 )))
638
639 (((
640 923.0 - SF7BW125 to SF10BW125
641 )))
642
643 (((
644 922.0 - SF7BW125 to SF10BW125
645 )))
646
647 (((
648
649 )))
650
651 (((
652 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
653 )))
654
655 (((
656 923.6 - SF7BW125 to SF10BW125
657 )))
658
659 (((
660 923.8 - SF7BW125 to SF10BW125
661 )))
662
663 (((
664 924.0 - SF7BW125 to SF10BW125
665 )))
666
667 (((
668 924.2 - SF7BW125 to SF10BW125
669 )))
670
671 (((
672 924.4 - SF7BW125 to SF10BW125
673 )))
674
675 (((
676 924.6 - SF7BW125 to SF10BW125
677 )))
678
679 (((
680
681 )))
682
683 (((
684 (% style="color:blue" %)**Downlink:**
685 )))
686
687 (((
688 Uplink channels 1-8 (RX1)
689 )))
690
691 (((
692 923.2 - SF10BW125 (RX2)
693 )))
694
695
696
697 === 2.6.6  KR920-923 (KR920) ===
698
699 (((
700 (% style="color:blue" %)**Default channel:**
701 )))
702
703 (((
704 922.1 - SF7BW125 to SF12BW125
705 )))
706
707 (((
708 922.3 - SF7BW125 to SF12BW125
709 )))
710
711 (((
712 922.5 - SF7BW125 to SF12BW125
713 )))
714
715 (((
716
717 )))
718
719 (((
720 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
721 )))
722
723 (((
724 922.1 - SF7BW125 to SF12BW125
725 )))
726
727 (((
728 922.3 - SF7BW125 to SF12BW125
729 )))
730
731 (((
732 922.5 - SF7BW125 to SF12BW125
733 )))
734
735 (((
736 922.7 - SF7BW125 to SF12BW125
737 )))
738
739 (((
740 922.9 - SF7BW125 to SF12BW125
741 )))
742
743 (((
744 923.1 - SF7BW125 to SF12BW125
745 )))
746
747 (((
748 923.3 - SF7BW125 to SF12BW125
749 )))
750
751 (((
752
753 )))
754
755 (((
756 (% style="color:blue" %)**Downlink:**
757 )))
758
759 (((
760 Uplink channels 1-7(RX1)
761 )))
762
763 (((
764 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
765 )))
766
767
768
769 === 2.6.7  IN865-867 (IN865) ===
770
771 (((
772 (% style="color:blue" %)**Uplink:**
773 )))
774
775 (((
776 865.0625 - SF7BW125 to SF12BW125
777 )))
778
779 (((
780 865.4025 - SF7BW125 to SF12BW125
781 )))
782
783 (((
784 865.9850 - SF7BW125 to SF12BW125
785 )))
786
787 (((
788
789 )))
790
791 (((
792 (% style="color:blue" %)**Downlink:**
793 )))
794
795 (((
796 Uplink channels 1-3 (RX1)
797 )))
798
799 (((
800 866.550 - SF10BW125 (RX2)
801 )))
802
803
804
805 == 2.7  LED Indicator ==
806
807 The LDDS75 has an internal LED which is to show the status of different state.
808
809
810 * Blink once when device power on.
811 * The device detects the sensor and flashes 5 times.
812 * Solid ON for 5 seconds once device successful Join the network.
813 * Blink once when device transmit a packet.
814
815 == 2.8  ​Firmware Change Log ==
816
817
818 **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/]]
819
820
821 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
822
823
824
825 == 2.9  Mechanical ==
826
827
828 [[image:image-20220610172003-1.png]]
829
830 [[image:image-20220610172003-2.png]]
831
832
833 == 2.10  Battery Analysis ==
834
835 === 2.10.1  Battery Type ===
836
837 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.
838
839
840 The battery related documents as below:
841
842 * (((
843 [[ Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
844 )))
845 * (((
846 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
847 )))
848 * (((
849 [[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]]
850 )))
851
852 [[image:image-20220610172400-3.png]]
853
854
855
856 === 2.10.2  Replace the battery ===
857
858 (((
859 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.
860 )))
861
862 (((
863
864 )))
865
866 (((
867 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)
868 )))
869
870
871
872 = 3.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
873
874 (((
875 (((
876 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
877 )))
878 )))
879
880 * (((
881 (((
882 AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
883 )))
884 )))
885 * (((
886 (((
887 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
888 )))
889 )))
890
891 (((
892 (((
893
894 )))
895
896 (((
897 There are two kinds of commands to configure LDDS75, they are:
898 )))
899 )))
900
901 * (((
902 (((
903 (% style="color:#4f81bd" %)** General Commands**.
904 )))
905 )))
906
907 (((
908 (((
909 These commands are to configure:
910 )))
911 )))
912
913 * (((
914 (((
915 General system settings like: uplink interval.
916 )))
917 )))
918 * (((
919 (((
920 LoRaWAN protocol & radio related command.
921 )))
922 )))
923
924 (((
925 (((
926 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]]
927 )))
928 )))
929
930 (((
931 (((
932
933 )))
934 )))
935
936 * (((
937 (((
938 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
939 )))
940 )))
941
942 (((
943 (((
944 These commands only valid for LDDS75, as below:
945 )))
946 )))
947
948
949
950 == 3.1  Access AT Commands ==
951
952 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.
953
954 [[image:image-20220610172924-4.png||height="483" width="988"]]
955
956
957 Or if you have below board, use below connection:
958
959
960 [[image:image-20220610172924-5.png]]
961
962
963 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:
964
965
966 [[image:image-20220610172924-6.png||height="601" width="860"]]
967
968
969
970 == 3.2  Set Transmit Interval Time ==
971
972 Feature: Change LoRaWAN End Node Transmit Interval.
973
974 (% style="color:#037691" %)**AT Command: AT+TDC**
975
976 [[image:image-20220610173409-7.png]]
977
978
979 (((
980 (% style="color:#037691" %)**Downlink Command: 0x01**
981 )))
982
983 (((
984 (((
985 Format: Command Code (0x01) followed by 3 bytes time value.
986
987 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
988
989 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
990 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
991 )))
992
993
994
995 )))
996
997 == 3.3  Set Interrupt Mode ==
998
999 Feature, Set Interrupt mode for GPIO_EXIT.
1000
1001 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1002
1003 [[image:image-20220610174917-9.png]]
1004
1005
1006 (% style="color:#037691" %)**Downlink Command: 0x06**
1007
1008 Format: Command Code (0x06) followed by 3 bytes.
1009
1010 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1011
1012 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1013 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1014
1015
1016
1017 = 4.  FAQ =
1018
1019 == 4.1  What is the frequency plan for LDDS75? ==
1020
1021 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"]]
1022
1023
1024
1025 == 4.2  How to change the LoRa Frequency Bands/Region ==
1026
1027 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1028 When downloading the images, choose the required image file for download. ​
1029
1030
1031
1032 == 4.3  Can I use LDDS75 in condensation environment? ==
1033
1034 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1035
1036
1037
1038 = 5.  Trouble Shooting =
1039
1040 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1041
1042 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1043
1044
1045 == 5.2  AT Command input doesn't work ==
1046
1047 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.
1048
1049 (((
1050
1051 )))
1052
1053
1054 = 6.  Order Info =
1055
1056
1057 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1058
1059
1060 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1061
1062 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1063 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1064 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1065 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1066 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1067 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1068 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1069 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1070
1071 (% style="color:blue" %)**YY**(%%): Battery Option
1072
1073 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1074 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1075
1076
1077
1078 = 7. ​ Packing Info =
1079
1080
1081 **Package Includes**:
1082
1083 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1084
1085 **Dimension and weight**:
1086
1087 * Device Size: cm
1088 * Device Weight: g
1089 * Package Size / pcs : cm
1090 * Weight / pcs : g
1091
1092
1093
1094 = 8.  ​Support =
1095
1096 * 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.
1097 * 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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