Version 150.30 by Xiaoling on 2022/06/11 09:08
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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
84 **(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.**
85
86
87 [[image:1654852175653-550.png]](% style="display:none" %) ** **
88
89
90
91 == 1.5 ​ Applications ==
92
93 * Horizontal distance measurement
94 * Liquid level measurement
95 * Parking management system
96 * Object proximity and presence detection
97 * Intelligent trash can management system
98 * Robot obstacle avoidance
99 * Automatic control
100 * Sewer
101 * Bottom water level monitoring
102
103 == 1.6  Pin mapping and power on ==
104
105
106 [[image:1654847583902-256.png]]
107
108
109
110 = 2.  Configure LDDS75 to connect to LoRaWAN network =
111
112 == 2.1  How it works ==
113
114 (((
115 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
116 )))
117
118 (((
119 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.
120 )))
121
122
123
124 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
125
126 (((
127 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.
128 )))
129
130 (((
131 [[image:1654848616367-242.png]]
132 )))
133
134 (((
135 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.
136 )))
137
138 (((
139 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
140 )))
141
142 (((
143 Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
144 )))
145
146 [[image:image-20220607170145-1.jpeg]]
147
148
149 For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
150
151 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
152
153 **Add APP EUI in the application**
154
155 [[image:image-20220610161353-4.png]]
156
157 [[image:image-20220610161353-5.png]]
158
159 [[image:image-20220610161353-6.png]]
160
161
162 [[image:image-20220610161353-7.png]]
163
164
165 You can also choose to create the device manually.
166
167 [[image:image-20220610161538-8.png]]
168
169
170
171 **Add APP KEY and DEV EUI**
172
173 [[image:image-20220610161538-9.png]]
174
175
176
177 (% style="color:blue" %)**Step 2**(%%): Power on LDDS75
178
179
180 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
181
182 [[image:image-20220610161724-10.png]]
183
184
185 (((
186 (% 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.
187 )))
188
189 [[image:1654849068701-275.png]]
190
191
192
193 == 2.3  ​Uplink Payload ==
194
195 (((
196 LDDS75 will uplink payload via LoRaWAN with below payload format: 
197
198 Uplink payload includes in total 4 bytes.
199 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
200 )))
201
202 (((
203
204 )))
205
206 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
207 |=(% style="width: 62.5px;" %)(((
208 **Size (bytes)**
209 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
210 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
211 [[Distance>>||anchor="H2.3.2A0Distance"]]
212
213 (unit: mm)
214 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
215 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
216 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
217
218 [[image:1654850511545-399.png]]
219
220
221
222 === 2.3.1  Battery Info ===
223
224
225 Check the battery voltage for LDDS75.
226
227 Ex1: 0x0B45 = 2885mV
228
229 Ex2: 0x0B49 = 2889mV
230
231
232
233 === 2.3.2  Distance ===
234
235 Get the distance. Flat object range 280mm - 7500mm.
236
237 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.**
238
239
240 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
241 * 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.
242
243
244 === 2.3.3  Interrupt Pin ===
245
246 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.
247
248 **Example:**
249
250 0x00: Normal uplink packet.
251
252 0x01: Interrupt Uplink Packet.
253
254
255
256 === 2.3.4  DS18B20 Temperature sensor ===
257
258 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
259
260 **Example**:
261
262 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
263
264 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
265
266 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
267
268
269
270 === 2.3.5  Sensor Flag ===
271
272 0x01: Detect Ultrasonic Sensor
273
274 0x00: No Ultrasonic Sensor
275
276
277
278 === 2.3.6  Decode payload in The Things Network ===
279
280 While using TTN network, you can add the payload format to decode the payload.
281
282
283 [[image:1654850829385-439.png]]
284
285 The payload decoder function for TTN V3 is here:
286
287 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/]]
288
289
290
291 == 2.4  Uplink Interval ==
292
293 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"]]
294
295
296
297 == 2.5  ​Show Data in DataCake IoT Server ==
298
299 (((
300 [[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:
301 )))
302
303 (((
304
305 )))
306
307 (((
308 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
309 )))
310
311 (((
312 (% 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:**
313 )))
314
315
316 [[image:1654592790040-760.png]]
317
318
319 [[image:1654592800389-571.png]]
320
321
322 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
323
324 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
325
326 [[image:1654851029373-510.png]]
327
328
329 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
330
331 [[image:image-20220610165129-11.png||height="595" width="1088"]]
332
333
334
335 == 2.6  Frequency Plans ==
336
337 (((
338 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.
339 )))
340
341
342
343 === 2.6.1  EU863-870 (EU868) ===
344
345 (((
346 (% style="color:blue" %)**Uplink:**
347 )))
348
349 (((
350 868.1 - SF7BW125 to SF12BW125
351 )))
352
353 (((
354 868.3 - SF7BW125 to SF12BW125 and SF7BW250
355 )))
356
357 (((
358 868.5 - SF7BW125 to SF12BW125
359 )))
360
361 (((
362 867.1 - SF7BW125 to SF12BW125
363 )))
364
365 (((
366 867.3 - SF7BW125 to SF12BW125
367 )))
368
369 (((
370 867.5 - SF7BW125 to SF12BW125
371 )))
372
373 (((
374 867.7 - SF7BW125 to SF12BW125
375 )))
376
377 (((
378 867.9 - SF7BW125 to SF12BW125
379 )))
380
381 (((
382 868.8 - FSK
383 )))
384
385 (((
386
387 )))
388
389 (((
390 (% style="color:blue" %)**Downlink:**
391 )))
392
393 (((
394 Uplink channels 1-9 (RX1)
395 )))
396
397 (((
398 869.525 - SF9BW125 (RX2 downlink only)
399 )))
400
401
402
403 === 2.6.2  US902-928(US915) ===
404
405 (((
406 Used in USA, Canada and South America. Default use CHE=2
407
408 (% style="color:blue" %)**Uplink:**
409
410 903.9 - SF7BW125 to SF10BW125
411
412 904.1 - SF7BW125 to SF10BW125
413
414 904.3 - SF7BW125 to SF10BW125
415
416 904.5 - SF7BW125 to SF10BW125
417
418 904.7 - SF7BW125 to SF10BW125
419
420 904.9 - SF7BW125 to SF10BW125
421
422 905.1 - SF7BW125 to SF10BW125
423
424 905.3 - SF7BW125 to SF10BW125
425
426
427 (% style="color:blue" %)**Downlink:**
428
429 923.3 - SF7BW500 to SF12BW500
430
431 923.9 - SF7BW500 to SF12BW500
432
433 924.5 - SF7BW500 to SF12BW500
434
435 925.1 - SF7BW500 to SF12BW500
436
437 925.7 - SF7BW500 to SF12BW500
438
439 926.3 - SF7BW500 to SF12BW500
440
441 926.9 - SF7BW500 to SF12BW500
442
443 927.5 - SF7BW500 to SF12BW500
444
445 923.3 - SF12BW500(RX2 downlink only)
446
447
448
449 )))
450
451 === 2.6.3  CN470-510 (CN470) ===
452
453 (((
454 Used in China, Default use CHE=1
455 )))
456
457 (((
458 (% style="color:blue" %)**Uplink:**
459 )))
460
461 (((
462 486.3 - SF7BW125 to SF12BW125
463 )))
464
465 (((
466 486.5 - SF7BW125 to SF12BW125
467 )))
468
469 (((
470 486.7 - SF7BW125 to SF12BW125
471 )))
472
473 (((
474 486.9 - SF7BW125 to SF12BW125
475 )))
476
477 (((
478 487.1 - SF7BW125 to SF12BW125
479 )))
480
481 (((
482 487.3 - SF7BW125 to SF12BW125
483 )))
484
485 (((
486 487.5 - SF7BW125 to SF12BW125
487 )))
488
489 (((
490 487.7 - SF7BW125 to SF12BW125
491 )))
492
493 (((
494
495 )))
496
497 (((
498 (% style="color:blue" %)**Downlink:**
499 )))
500
501 (((
502 506.7 - SF7BW125 to SF12BW125
503 )))
504
505 (((
506 506.9 - SF7BW125 to SF12BW125
507 )))
508
509 (((
510 507.1 - SF7BW125 to SF12BW125
511 )))
512
513 (((
514 507.3 - SF7BW125 to SF12BW125
515 )))
516
517 (((
518 507.5 - SF7BW125 to SF12BW125
519 )))
520
521 (((
522 507.7 - SF7BW125 to SF12BW125
523 )))
524
525 (((
526 507.9 - SF7BW125 to SF12BW125
527 )))
528
529 (((
530 508.1 - SF7BW125 to SF12BW125
531 )))
532
533 (((
534 505.3 - SF12BW125 (RX2 downlink only)
535 )))
536
537
538
539 === 2.6.4  AU915-928(AU915) ===
540
541 (((
542 Default use CHE=2
543
544 (% style="color:blue" %)**Uplink:**
545
546 916.8 - SF7BW125 to SF12BW125
547
548 917.0 - SF7BW125 to SF12BW125
549
550 917.2 - SF7BW125 to SF12BW125
551
552 917.4 - SF7BW125 to SF12BW125
553
554 917.6 - SF7BW125 to SF12BW125
555
556 917.8 - SF7BW125 to SF12BW125
557
558 918.0 - SF7BW125 to SF12BW125
559
560 918.2 - SF7BW125 to SF12BW125
561
562
563 (% style="color:blue" %)**Downlink:**
564
565 923.3 - SF7BW500 to SF12BW500
566
567 923.9 - SF7BW500 to SF12BW500
568
569 924.5 - SF7BW500 to SF12BW500
570
571 925.1 - SF7BW500 to SF12BW500
572
573 925.7 - SF7BW500 to SF12BW500
574
575 926.3 - SF7BW500 to SF12BW500
576
577 926.9 - SF7BW500 to SF12BW500
578
579 927.5 - SF7BW500 to SF12BW500
580
581 923.3 - SF12BW500(RX2 downlink only)
582
583
584
585 )))
586
587 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
588
589 (((
590 (% style="color:blue" %)**Default Uplink channel:**
591 )))
592
593 (((
594 923.2 - SF7BW125 to SF10BW125
595 )))
596
597 (((
598 923.4 - SF7BW125 to SF10BW125
599 )))
600
601 (((
602
603 )))
604
605 (((
606 (% style="color:blue" %)**Additional Uplink Channel**:
607 )))
608
609 (((
610 (OTAA mode, channel added by JoinAccept message)
611 )))
612
613 (((
614
615 )))
616
617 (((
618 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
619 )))
620
621 (((
622 922.2 - SF7BW125 to SF10BW125
623 )))
624
625 (((
626 922.4 - SF7BW125 to SF10BW125
627 )))
628
629 (((
630 922.6 - SF7BW125 to SF10BW125
631 )))
632
633 (((
634 922.8 - SF7BW125 to SF10BW125
635 )))
636
637 (((
638 923.0 - SF7BW125 to SF10BW125
639 )))
640
641 (((
642 922.0 - SF7BW125 to SF10BW125
643 )))
644
645 (((
646
647 )))
648
649 (((
650 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
651 )))
652
653 (((
654 923.6 - SF7BW125 to SF10BW125
655 )))
656
657 (((
658 923.8 - SF7BW125 to SF10BW125
659 )))
660
661 (((
662 924.0 - SF7BW125 to SF10BW125
663 )))
664
665 (((
666 924.2 - SF7BW125 to SF10BW125
667 )))
668
669 (((
670 924.4 - SF7BW125 to SF10BW125
671 )))
672
673 (((
674 924.6 - SF7BW125 to SF10BW125
675 )))
676
677 (((
678
679 )))
680
681 (((
682 (% style="color:blue" %)**Downlink:**
683 )))
684
685 (((
686 Uplink channels 1-8 (RX1)
687 )))
688
689 (((
690 923.2 - SF10BW125 (RX2)
691 )))
692
693
694
695 === 2.6.6  KR920-923 (KR920) ===
696
697 (((
698 (% style="color:blue" %)**Default channel:**
699 )))
700
701 (((
702 922.1 - SF7BW125 to SF12BW125
703 )))
704
705 (((
706 922.3 - SF7BW125 to SF12BW125
707 )))
708
709 (((
710 922.5 - SF7BW125 to SF12BW125
711 )))
712
713 (((
714
715 )))
716
717 (((
718 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
719 )))
720
721 (((
722 922.1 - SF7BW125 to SF12BW125
723 )))
724
725 (((
726 922.3 - SF7BW125 to SF12BW125
727 )))
728
729 (((
730 922.5 - SF7BW125 to SF12BW125
731 )))
732
733 (((
734 922.7 - SF7BW125 to SF12BW125
735 )))
736
737 (((
738 922.9 - SF7BW125 to SF12BW125
739 )))
740
741 (((
742 923.1 - SF7BW125 to SF12BW125
743 )))
744
745 (((
746 923.3 - SF7BW125 to SF12BW125
747 )))
748
749 (((
750
751 )))
752
753 (((
754 (% style="color:blue" %)**Downlink:**
755 )))
756
757 (((
758 Uplink channels 1-7(RX1)
759 )))
760
761 (((
762 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
763 )))
764
765
766
767 === 2.6.7  IN865-867 (IN865) ===
768
769 (((
770 (% style="color:blue" %)**Uplink:**
771 )))
772
773 (((
774 865.0625 - SF7BW125 to SF12BW125
775 )))
776
777 (((
778 865.4025 - SF7BW125 to SF12BW125
779 )))
780
781 (((
782 865.9850 - SF7BW125 to SF12BW125
783 )))
784
785 (((
786
787 )))
788
789 (((
790 (% style="color:blue" %)**Downlink:**
791 )))
792
793 (((
794 Uplink channels 1-3 (RX1)
795 )))
796
797 (((
798 866.550 - SF10BW125 (RX2)
799 )))
800
801
802
803 == 2.7  LED Indicator ==
804
805 The LDDS75 has an internal LED which is to show the status of different state.
806
807
808 * Blink once when device power on.
809 * The device detects the sensor and flashes 5 times.
810 * Solid ON for 5 seconds once device successful Join the network.
811 * Blink once when device transmit a packet.
812
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
830 [[image:image-20220610172003-2.png]]
831
832
833
834 == 2.10  Battery Analysis ==
835
836 === 2.10.1  Battery Type ===
837
838 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.
839
840
841 The battery related documents as below:
842
843 * (((
844 [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
845 )))
846 * (((
847 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
848 )))
849 * (((
850 [[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]]
851 )))
852
853 [[image:image-20220610172400-3.png]]
854
855
856
857 === 2.10.2  Replace the battery ===
858
859 (((
860 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.
861 )))
862
863 (((
864
865 )))
866
867 (((
868 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)
869 )))
870
871
872
873 = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
874
875 (((
876 (((
877 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
878 )))
879 )))
880
881 * (((
882 (((
883 AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
884 )))
885 )))
886 * (((
887 (((
888 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
889 )))
890 )))
891
892 (((
893 (((
894
895 )))
896
897 (((
898 There are two kinds of commands to configure LDDS75, they are:
899 )))
900 )))
901
902 * (((
903 (((
904 (% style="color:#4f81bd" %)** General Commands**.
905 )))
906 )))
907
908 (((
909 (((
910 These commands are to configure:
911 )))
912 )))
913
914 * (((
915 (((
916 General system settings like: uplink interval.
917 )))
918 )))
919 * (((
920 (((
921 LoRaWAN protocol & radio related command.
922 )))
923 )))
924
925 (((
926 (((
927 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]]
928 )))
929 )))
930
931 (((
932 (((
933
934 )))
935 )))
936
937 * (((
938 (((
939 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
940 )))
941 )))
942
943 (((
944 (((
945 These commands only valid for LDDS75, as below:
946 )))
947 )))
948
949
950
951 == 3.1  Access AT Commands ==
952
953 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.
954
955 [[image:image-20220610172924-4.png||height="483" width="988"]]
956
957
958 Or if you have below board, use below connection:
959
960
961 [[image:image-20220610172924-5.png]]
962
963
964 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:
965
966
967 [[image:image-20220610172924-6.png||height="601" width="860"]]
968
969
970
971 == 3.2  Set Transmit Interval Time ==
972
973 Feature: Change LoRaWAN End Node Transmit Interval.
974
975 (% style="color:#037691" %)**AT Command: AT+TDC**
976
977 [[image:image-20220610173409-7.png]]
978
979
980 (((
981 (% style="color:#037691" %)**Downlink Command: 0x01**
982 )))
983
984 (((
985 (((
986 Format: Command Code (0x01) followed by 3 bytes time value.
987
988 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
989
990 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
991 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
992 )))
993
994
995
996 )))
997
998 == 3.3  Set Interrupt Mode ==
999
1000 Feature, Set Interrupt mode for GPIO_EXIT.
1001
1002 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1003
1004 [[image:image-20220610174917-9.png]]
1005
1006
1007 (% style="color:#037691" %)**Downlink Command: 0x06**
1008
1009 Format: Command Code (0x06) followed by 3 bytes.
1010
1011 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1012
1013 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1014 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1015
1016 = 4.  FAQ =
1017
1018 == 4.1  What is the frequency plan for LDDS75? ==
1019
1020 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"]]
1021
1022
1023
1024 == 4.2  How to change the LoRa Frequency Bands/Region ==
1025
1026 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1027 When downloading the images, choose the required image file for download. ​
1028
1029
1030
1031 == 4.3  Can I use LDDS75 in condensation environment? ==
1032
1033 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1034
1035
1036
1037 = 5.  Trouble Shooting =
1038
1039 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1040
1041 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1042
1043
1044 == 5.2  AT Command input doesn't work ==
1045
1046 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.
1047
1048 (((
1049
1050 )))
1051
1052
1053 = 6.  Order Info =
1054
1055
1056 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1057
1058
1059 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1060
1061 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1062 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1063 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1064 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1065 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1066 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1067 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1068 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1069
1070 (% style="color:blue" %)**YY**(%%): Battery Option
1071
1072 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1073 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
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 = 8.  ​Support =
1090
1091 * 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.
1092 * 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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