Version 150.11 by Xiaoling on 2022/06/11 08:40
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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 == 1.3  Specification ==
65
66 === 1.3.1  Rated environmental conditions ===
67
68 [[image:image-20220610154839-1.png]]
69
70 **Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
71
72 **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)**
73
74
75
76 === 1.3.2  Effective measurement range Reference beam pattern ===
77
78 **(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
79
80
81
82 [[image:1654852253176-749.png]]
83
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
106
107
108 == 1.6  Pin mapping and power on ==
109
110
111 [[image:1654847583902-256.png]]
112
113
114
115 = 2.  Configure LDDS75 to connect to LoRaWAN network =
116
117 == 2.1  How it works ==
118
119 (((
120 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
121 )))
122
123 (((
124 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.
125 )))
126
127
128
129 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
130
131 (((
132 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.
133 )))
134
135 (((
136 [[image:1654848616367-242.png]]
137 )))
138
139 (((
140 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.
141 )))
142
143 (((
144 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
145 )))
146
147 (((
148 Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
149 )))
150
151 [[image:image-20220607170145-1.jpeg]]
152
153
154 For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
155
156 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
157
158 **Add APP EUI in the application**
159
160 [[image:image-20220610161353-4.png]]
161
162 [[image:image-20220610161353-5.png]]
163
164 [[image:image-20220610161353-6.png]]
165
166
167 [[image:image-20220610161353-7.png]]
168
169
170 You can also choose to create the device manually.
171
172 [[image:image-20220610161538-8.png]]
173
174
175
176 **Add APP KEY and DEV EUI**
177
178 [[image:image-20220610161538-9.png]]
179
180
181
182 (% style="color:blue" %)**Step 2**(%%): Power on LDDS75
183
184
185 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
186
187 [[image:image-20220610161724-10.png]]
188
189
190 (((
191 (% 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.
192 )))
193
194 [[image:1654849068701-275.png]]
195
196
197
198 == 2.3  ​Uplink Payload ==
199
200 (((
201 LDDS75 will uplink payload via LoRaWAN with below payload format: 
202
203 Uplink payload includes in total 4 bytes.
204 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
205 )))
206
207 (((
208
209 )))
210
211 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
212 |=(% style="width: 62.5px;" %)(((
213 **Size (bytes)**
214 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
215 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
216 [[Distance>>||anchor="H2.3.3A0Distance"]]
217
218 (unit: mm)
219 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.4A0Distancesignalstrength"]]|(((
220 [[Temperature (Optional )>>||anchor="H2.3.5A0InterruptPin"]]
221 )))|[[Sensor Flag>>path:#Sensor_Flag]]
222
223 [[image:1654850511545-399.png]]
224
225
226
227 === 2.3.1  Battery Info ===
228
229
230 Check the battery voltage for LDDS75.
231
232 Ex1: 0x0B45 = 2885mV
233
234 Ex2: 0x0B49 = 2889mV
235
236
237
238 === 2.3.2  Distance ===
239
240 Get the distance. Flat object range 280mm - 7500mm.
241
242 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.**
243
244
245 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
246 * 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.
247
248 === 2.3.3  Interrupt Pin ===
249
250 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.
251
252 **Example:**
253
254 0x00: Normal uplink packet.
255
256 0x01: Interrupt Uplink Packet.
257
258
259
260 === 2.3.4  DS18B20 Temperature sensor ===
261
262 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
263
264 **Example**:
265
266 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
267
268 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
269
270 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
271
272
273
274 === 2.3.5  Sensor Flag ===
275
276 0x01: Detect Ultrasonic Sensor
277
278 0x00: No Ultrasonic Sensor
279
280
281
282 === 2.3.6  Decode payload in The Things Network ===
283
284 While using TTN network, you can add the payload format to decode the payload.
285
286
287 [[image:1654850829385-439.png]]
288
289 The payload decoder function for TTN V3 is here:
290
291 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/]]
292
293
294
295 == 2.4  Uplink Interval ==
296
297 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"]]
298
299
300
301 == 2.5  ​Show Data in DataCake IoT Server ==
302
303 (((
304 [[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:
305 )))
306
307 (((
308
309 )))
310
311 (((
312 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
313 )))
314
315 (((
316 (% 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:**
317 )))
318
319
320 [[image:1654592790040-760.png]]
321
322
323 [[image:1654592800389-571.png]]
324
325
326 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
327
328 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
329
330 [[image:1654851029373-510.png]]
331
332
333 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
334
335 [[image:image-20220610165129-11.png||height="595" width="1088"]]
336
337
338
339 == 2.6  Frequency Plans ==
340
341 (((
342 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.
343 )))
344
345
346
347 === 2.6.1  EU863-870 (EU868) ===
348
349 (((
350 (% style="color:blue" %)**Uplink:**
351 )))
352
353 (((
354 868.1 - SF7BW125 to SF12BW125
355 )))
356
357 (((
358 868.3 - SF7BW125 to SF12BW125 and SF7BW250
359 )))
360
361 (((
362 868.5 - SF7BW125 to SF12BW125
363 )))
364
365 (((
366 867.1 - SF7BW125 to SF12BW125
367 )))
368
369 (((
370 867.3 - SF7BW125 to SF12BW125
371 )))
372
373 (((
374 867.5 - SF7BW125 to SF12BW125
375 )))
376
377 (((
378 867.7 - SF7BW125 to SF12BW125
379 )))
380
381 (((
382 867.9 - SF7BW125 to SF12BW125
383 )))
384
385 (((
386 868.8 - FSK
387 )))
388
389 (((
390
391 )))
392
393 (((
394 (% style="color:blue" %)**Downlink:**
395 )))
396
397 (((
398 Uplink channels 1-9 (RX1)
399 )))
400
401 (((
402 869.525 - SF9BW125 (RX2 downlink only)
403 )))
404
405
406
407 === 2.6.2  US902-928(US915) ===
408
409 (((
410 Used in USA, Canada and South America. Default use CHE=2
411
412 (% style="color:blue" %)**Uplink:**
413
414 903.9 - SF7BW125 to SF10BW125
415
416 904.1 - SF7BW125 to SF10BW125
417
418 904.3 - SF7BW125 to SF10BW125
419
420 904.5 - SF7BW125 to SF10BW125
421
422 904.7 - SF7BW125 to SF10BW125
423
424 904.9 - SF7BW125 to SF10BW125
425
426 905.1 - SF7BW125 to SF10BW125
427
428 905.3 - SF7BW125 to SF10BW125
429
430
431 (% style="color:blue" %)**Downlink:**
432
433 923.3 - SF7BW500 to SF12BW500
434
435 923.9 - SF7BW500 to SF12BW500
436
437 924.5 - SF7BW500 to SF12BW500
438
439 925.1 - SF7BW500 to SF12BW500
440
441 925.7 - SF7BW500 to SF12BW500
442
443 926.3 - SF7BW500 to SF12BW500
444
445 926.9 - SF7BW500 to SF12BW500
446
447 927.5 - SF7BW500 to SF12BW500
448
449 923.3 - SF12BW500(RX2 downlink only)
450
451
452
453 )))
454
455 === 2.6.3  CN470-510 (CN470) ===
456
457 (((
458 Used in China, Default use CHE=1
459 )))
460
461 (((
462 (% style="color:blue" %)**Uplink:**
463 )))
464
465 (((
466 486.3 - SF7BW125 to SF12BW125
467 )))
468
469 (((
470 486.5 - SF7BW125 to SF12BW125
471 )))
472
473 (((
474 486.7 - SF7BW125 to SF12BW125
475 )))
476
477 (((
478 486.9 - SF7BW125 to SF12BW125
479 )))
480
481 (((
482 487.1 - SF7BW125 to SF12BW125
483 )))
484
485 (((
486 487.3 - SF7BW125 to SF12BW125
487 )))
488
489 (((
490 487.5 - SF7BW125 to SF12BW125
491 )))
492
493 (((
494 487.7 - SF7BW125 to SF12BW125
495 )))
496
497 (((
498
499 )))
500
501 (((
502 (% style="color:blue" %)**Downlink:**
503 )))
504
505 (((
506 506.7 - SF7BW125 to SF12BW125
507 )))
508
509 (((
510 506.9 - SF7BW125 to SF12BW125
511 )))
512
513 (((
514 507.1 - SF7BW125 to SF12BW125
515 )))
516
517 (((
518 507.3 - SF7BW125 to SF12BW125
519 )))
520
521 (((
522 507.5 - SF7BW125 to SF12BW125
523 )))
524
525 (((
526 507.7 - SF7BW125 to SF12BW125
527 )))
528
529 (((
530 507.9 - SF7BW125 to SF12BW125
531 )))
532
533 (((
534 508.1 - SF7BW125 to SF12BW125
535 )))
536
537 (((
538 505.3 - SF12BW125 (RX2 downlink only)
539 )))
540
541
542
543 === 2.6.4  AU915-928(AU915) ===
544
545 (((
546 Default use CHE=2
547
548 (% style="color:blue" %)**Uplink:**
549
550 916.8 - SF7BW125 to SF12BW125
551
552 917.0 - SF7BW125 to SF12BW125
553
554 917.2 - SF7BW125 to SF12BW125
555
556 917.4 - SF7BW125 to SF12BW125
557
558 917.6 - SF7BW125 to SF12BW125
559
560 917.8 - SF7BW125 to SF12BW125
561
562 918.0 - SF7BW125 to SF12BW125
563
564 918.2 - SF7BW125 to SF12BW125
565
566
567 (% style="color:blue" %)**Downlink:**
568
569 923.3 - SF7BW500 to SF12BW500
570
571 923.9 - SF7BW500 to SF12BW500
572
573 924.5 - SF7BW500 to SF12BW500
574
575 925.1 - SF7BW500 to SF12BW500
576
577 925.7 - SF7BW500 to SF12BW500
578
579 926.3 - SF7BW500 to SF12BW500
580
581 926.9 - SF7BW500 to SF12BW500
582
583 927.5 - SF7BW500 to SF12BW500
584
585 923.3 - SF12BW500(RX2 downlink only)
586
587
588
589 )))
590
591 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
592
593 (((
594 (% style="color:blue" %)**Default Uplink channel:**
595 )))
596
597 (((
598 923.2 - SF7BW125 to SF10BW125
599 )))
600
601 (((
602 923.4 - SF7BW125 to SF10BW125
603 )))
604
605 (((
606
607 )))
608
609 (((
610 (% style="color:blue" %)**Additional Uplink Channel**:
611 )))
612
613 (((
614 (OTAA mode, channel added by JoinAccept message)
615 )))
616
617 (((
618
619 )))
620
621 (((
622 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
623 )))
624
625 (((
626 922.2 - SF7BW125 to SF10BW125
627 )))
628
629 (((
630 922.4 - SF7BW125 to SF10BW125
631 )))
632
633 (((
634 922.6 - SF7BW125 to SF10BW125
635 )))
636
637 (((
638 922.8 - SF7BW125 to SF10BW125
639 )))
640
641 (((
642 923.0 - SF7BW125 to SF10BW125
643 )))
644
645 (((
646 922.0 - SF7BW125 to SF10BW125
647 )))
648
649 (((
650
651 )))
652
653 (((
654 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
655 )))
656
657 (((
658 923.6 - SF7BW125 to SF10BW125
659 )))
660
661 (((
662 923.8 - SF7BW125 to SF10BW125
663 )))
664
665 (((
666 924.0 - SF7BW125 to SF10BW125
667 )))
668
669 (((
670 924.2 - SF7BW125 to SF10BW125
671 )))
672
673 (((
674 924.4 - SF7BW125 to SF10BW125
675 )))
676
677 (((
678 924.6 - SF7BW125 to SF10BW125
679 )))
680
681 (((
682
683 )))
684
685 (((
686 (% style="color:blue" %)**Downlink:**
687 )))
688
689 (((
690 Uplink channels 1-8 (RX1)
691 )))
692
693 (((
694 923.2 - SF10BW125 (RX2)
695 )))
696
697
698
699 === 2.6.6  KR920-923 (KR920) ===
700
701 (((
702 (% style="color:blue" %)**Default channel:**
703 )))
704
705 (((
706 922.1 - SF7BW125 to SF12BW125
707 )))
708
709 (((
710 922.3 - SF7BW125 to SF12BW125
711 )))
712
713 (((
714 922.5 - SF7BW125 to SF12BW125
715 )))
716
717 (((
718
719 )))
720
721 (((
722 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
723 )))
724
725 (((
726 922.1 - SF7BW125 to SF12BW125
727 )))
728
729 (((
730 922.3 - SF7BW125 to SF12BW125
731 )))
732
733 (((
734 922.5 - SF7BW125 to SF12BW125
735 )))
736
737 (((
738 922.7 - SF7BW125 to SF12BW125
739 )))
740
741 (((
742 922.9 - SF7BW125 to SF12BW125
743 )))
744
745 (((
746 923.1 - SF7BW125 to SF12BW125
747 )))
748
749 (((
750 923.3 - SF7BW125 to SF12BW125
751 )))
752
753 (((
754
755 )))
756
757 (((
758 (% style="color:blue" %)**Downlink:**
759 )))
760
761 (((
762 Uplink channels 1-7(RX1)
763 )))
764
765 (((
766 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
767 )))
768
769
770
771 === 2.6.7  IN865-867 (IN865) ===
772
773 (((
774 (% style="color:blue" %)**Uplink:**
775 )))
776
777 (((
778 865.0625 - SF7BW125 to SF12BW125
779 )))
780
781 (((
782 865.4025 - SF7BW125 to SF12BW125
783 )))
784
785 (((
786 865.9850 - SF7BW125 to SF12BW125
787 )))
788
789 (((
790
791 )))
792
793 (((
794 (% style="color:blue" %)**Downlink:**
795 )))
796
797 (((
798 Uplink channels 1-3 (RX1)
799 )))
800
801 (((
802 866.550 - SF10BW125 (RX2)
803 )))
804
805
806
807 == 2.7  LED Indicator ==
808
809 The LDDS75 has an internal LED which is to show the status of different state.
810
811
812 * Blink once when device power on.
813 * The device detects the sensor and flashes 5 times.
814 * Solid ON for 5 seconds once device successful Join the network.
815 * Blink once when device transmit a packet.
816
817 == 2.8  ​Firmware Change Log ==
818
819
820 **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/]]
821
822
823 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
824
825
826
827 == 2.9  Mechanical ==
828
829
830 [[image:image-20220610172003-1.png]]
831
832 [[image:image-20220610172003-2.png]]
833
834
835 == 2.10  Battery Analysis ==
836
837 === 2.10.1  Battery Type ===
838
839 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.
840
841
842 The battery related documents as below:
843
844 * (((
845 [[ Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
846 )))
847 * (((
848 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
849 )))
850 * (((
851 [[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]]
852 )))
853
854 [[image:image-20220610172400-3.png]]
855
856
857
858 === 2.10.2  Replace the battery ===
859
860 (((
861 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.
862 )))
863
864 (((
865
866 )))
867
868 (((
869 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)
870 )))
871
872
873
874 = 3.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
875
876 (((
877 (((
878 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
879 )))
880 )))
881
882 * (((
883 (((
884 AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
885 )))
886 )))
887 * (((
888 (((
889 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
890 )))
891 )))
892
893 (((
894 (((
895
896 )))
897
898 (((
899 There are two kinds of commands to configure LDDS75, they are:
900 )))
901 )))
902
903 * (((
904 (((
905 (% style="color:#4f81bd" %)** General Commands**.
906 )))
907 )))
908
909 (((
910 (((
911 These commands are to configure:
912 )))
913 )))
914
915 * (((
916 (((
917 General system settings like: uplink interval.
918 )))
919 )))
920 * (((
921 (((
922 LoRaWAN protocol & radio related command.
923 )))
924 )))
925
926 (((
927 (((
928 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]]
929 )))
930 )))
931
932 (((
933 (((
934
935 )))
936 )))
937
938 * (((
939 (((
940 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
941 )))
942 )))
943
944 (((
945 (((
946 These commands only valid for LDDS75, as below:
947 )))
948 )))
949
950
951
952 == 3.1  Access AT Commands ==
953
954 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.
955
956 [[image:image-20220610172924-4.png||height="483" width="988"]]
957
958
959 Or if you have below board, use below connection:
960
961
962 [[image:image-20220610172924-5.png]]
963
964
965 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:
966
967
968 [[image:image-20220610172924-6.png||height="601" width="860"]]
969
970
971
972 == 3.2  Set Transmit Interval Time ==
973
974 Feature: Change LoRaWAN End Node Transmit Interval.
975
976 (% style="color:#037691" %)**AT Command: AT+TDC**
977
978 [[image:image-20220610173409-7.png]]
979
980
981 (((
982 (% style="color:#037691" %)**Downlink Command: 0x01**
983 )))
984
985 (((
986 (((
987 Format: Command Code (0x01) followed by 3 bytes time value.
988
989 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
990
991 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
992 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
993 )))
994
995
996
997 )))
998
999 == 3.3  Set Interrupt Mode ==
1000
1001 Feature, Set Interrupt mode for GPIO_EXIT.
1002
1003 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1004
1005 [[image:image-20220610174917-9.png]]
1006
1007
1008 (% style="color:#037691" %)**Downlink Command: 0x06**
1009
1010 Format: Command Code (0x06) followed by 3 bytes.
1011
1012 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1013
1014 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1015 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
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 = 7. ​ Packing Info =
1077
1078
1079 **Package Includes**:
1080
1081 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1082
1083 **Dimension and weight**:
1084
1085 * Device Size: cm
1086 * Device Weight: g
1087 * Package Size / pcs : cm
1088 * Weight / pcs : g
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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