Version 150.20 by Xiaoling on 2022/06/11 08:50
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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 == 1.3  Specification ==
64
65 === 1.3.1  Rated environmental conditions ===
66
67 [[image:image-20220610154839-1.png]]
68
69 **Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
70
71 **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)**
72
73
74
75 === 1.3.2  Effective measurement range Reference beam pattern ===
76
77 **(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
78
79
80
81 [[image:1654852253176-749.png]]
82
83
84
85 **(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.**
86
87
88 [[image:1654852175653-550.png]](% style="display:none" %) ** **
89
90
91
92 == 1.5 ​ Applications ==
93
94 * Horizontal distance measurement
95 * Liquid level measurement
96 * Parking management system
97 * Object proximity and presence detection
98 * Intelligent trash can management system
99 * Robot obstacle avoidance
100 * Automatic control
101 * Sewer
102 * Bottom water level monitoring
103
104
105
106 == 1.6  Pin mapping and power on ==
107
108
109 [[image:1654847583902-256.png]]
110
111
112
113 = 2.  Configure LDDS75 to connect to LoRaWAN network =
114
115 == 2.1  How it works ==
116
117 (((
118 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
119 )))
120
121 (((
122 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.
123 )))
124
125
126
127 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
128
129 (((
130 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.
131 )))
132
133 (((
134 [[image:1654848616367-242.png]]
135 )))
136
137 (((
138 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.
139 )))
140
141 (((
142 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
143 )))
144
145 (((
146 Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
147 )))
148
149 [[image:image-20220607170145-1.jpeg]]
150
151
152 For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
153
154 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
155
156 **Add APP EUI in the application**
157
158 [[image:image-20220610161353-4.png]]
159
160 [[image:image-20220610161353-5.png]]
161
162 [[image:image-20220610161353-6.png]]
163
164
165 [[image:image-20220610161353-7.png]]
166
167
168 You can also choose to create the device manually.
169
170 [[image:image-20220610161538-8.png]]
171
172
173
174 **Add APP KEY and DEV EUI**
175
176 [[image:image-20220610161538-9.png]]
177
178
179
180 (% style="color:blue" %)**Step 2**(%%): Power on LDDS75
181
182
183 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
184
185 [[image:image-20220610161724-10.png]]
186
187
188 (((
189 (% 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.
190 )))
191
192 [[image:1654849068701-275.png]]
193
194
195
196 == 2.3  ​Uplink Payload ==
197
198 (((
199 LDDS75 will uplink payload via LoRaWAN with below payload format: 
200
201 Uplink payload includes in total 4 bytes.
202 Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
203 )))
204
205 (((
206
207 )))
208
209 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %)
210 |=(% style="width: 62.5px;" %)(((
211 **Size (bytes)**
212 )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
213 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
214 [[Distance>>||anchor="H2.3.2A0Distance"]]
215
216 (unit: mm)
217 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
218 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
219 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
220
221 [[image:1654850511545-399.png]]
222
223
224
225 === 2.3.1  Battery Info ===
226
227
228 Check the battery voltage for LDDS75.
229
230 Ex1: 0x0B45 = 2885mV
231
232 Ex2: 0x0B49 = 2889mV
233
234
235
236 === 2.3.2  Distance ===
237
238 Get the distance. Flat object range 280mm - 7500mm.
239
240 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.**
241
242
243 * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
244 * 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.
245
246
247
248
249 === 2.3.3  Interrupt Pin ===
250
251 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.
252
253 **Example:**
254
255 0x00: Normal uplink packet.
256
257 0x01: Interrupt Uplink Packet.
258
259
260
261 === 2.3.4  DS18B20 Temperature sensor ===
262
263 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
264
265 **Example**:
266
267 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
268
269 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
270
271 (% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
272
273
274
275 === 2.3.5  Sensor Flag ===
276
277 0x01: Detect Ultrasonic Sensor
278
279 0x00: No Ultrasonic Sensor
280
281
282
283 === 2.3.6  Decode payload in The Things Network ===
284
285 While using TTN network, you can add the payload format to decode the payload.
286
287
288 [[image:1654850829385-439.png]]
289
290 The payload decoder function for TTN V3 is here:
291
292 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/]]
293
294
295
296 == 2.4  Uplink Interval ==
297
298 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"]]
299
300
301
302 == 2.5  ​Show Data in DataCake IoT Server ==
303
304 (((
305 [[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:
306 )))
307
308 (((
309
310 )))
311
312 (((
313 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
314 )))
315
316 (((
317 (% 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:**
318 )))
319
320
321 [[image:1654592790040-760.png]]
322
323
324 [[image:1654592800389-571.png]]
325
326
327 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
328
329 (% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
330
331 [[image:1654851029373-510.png]]
332
333
334 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
335
336 [[image:image-20220610165129-11.png||height="595" width="1088"]]
337
338
339
340 == 2.6  Frequency Plans ==
341
342 (((
343 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.
344 )))
345
346
347
348 === 2.6.1  EU863-870 (EU868) ===
349
350 (((
351 (% style="color:blue" %)**Uplink:**
352 )))
353
354 (((
355 868.1 - SF7BW125 to SF12BW125
356 )))
357
358 (((
359 868.3 - SF7BW125 to SF12BW125 and SF7BW250
360 )))
361
362 (((
363 868.5 - SF7BW125 to SF12BW125
364 )))
365
366 (((
367 867.1 - SF7BW125 to SF12BW125
368 )))
369
370 (((
371 867.3 - SF7BW125 to SF12BW125
372 )))
373
374 (((
375 867.5 - SF7BW125 to SF12BW125
376 )))
377
378 (((
379 867.7 - SF7BW125 to SF12BW125
380 )))
381
382 (((
383 867.9 - SF7BW125 to SF12BW125
384 )))
385
386 (((
387 868.8 - FSK
388 )))
389
390 (((
391
392 )))
393
394 (((
395 (% style="color:blue" %)**Downlink:**
396 )))
397
398 (((
399 Uplink channels 1-9 (RX1)
400 )))
401
402 (((
403 869.525 - SF9BW125 (RX2 downlink only)
404 )))
405
406
407
408 === 2.6.2  US902-928(US915) ===
409
410 (((
411 Used in USA, Canada and South America. Default use CHE=2
412
413 (% style="color:blue" %)**Uplink:**
414
415 903.9 - SF7BW125 to SF10BW125
416
417 904.1 - SF7BW125 to SF10BW125
418
419 904.3 - SF7BW125 to SF10BW125
420
421 904.5 - SF7BW125 to SF10BW125
422
423 904.7 - SF7BW125 to SF10BW125
424
425 904.9 - SF7BW125 to SF10BW125
426
427 905.1 - SF7BW125 to SF10BW125
428
429 905.3 - SF7BW125 to SF10BW125
430
431
432 (% style="color:blue" %)**Downlink:**
433
434 923.3 - SF7BW500 to SF12BW500
435
436 923.9 - SF7BW500 to SF12BW500
437
438 924.5 - SF7BW500 to SF12BW500
439
440 925.1 - SF7BW500 to SF12BW500
441
442 925.7 - SF7BW500 to SF12BW500
443
444 926.3 - SF7BW500 to SF12BW500
445
446 926.9 - SF7BW500 to SF12BW500
447
448 927.5 - SF7BW500 to SF12BW500
449
450 923.3 - SF12BW500(RX2 downlink only)
451
452
453
454 )))
455
456 === 2.6.3  CN470-510 (CN470) ===
457
458 (((
459 Used in China, Default use CHE=1
460 )))
461
462 (((
463 (% style="color:blue" %)**Uplink:**
464 )))
465
466 (((
467 486.3 - SF7BW125 to SF12BW125
468 )))
469
470 (((
471 486.5 - SF7BW125 to SF12BW125
472 )))
473
474 (((
475 486.7 - SF7BW125 to SF12BW125
476 )))
477
478 (((
479 486.9 - SF7BW125 to SF12BW125
480 )))
481
482 (((
483 487.1 - SF7BW125 to SF12BW125
484 )))
485
486 (((
487 487.3 - SF7BW125 to SF12BW125
488 )))
489
490 (((
491 487.5 - SF7BW125 to SF12BW125
492 )))
493
494 (((
495 487.7 - SF7BW125 to SF12BW125
496 )))
497
498 (((
499
500 )))
501
502 (((
503 (% style="color:blue" %)**Downlink:**
504 )))
505
506 (((
507 506.7 - SF7BW125 to SF12BW125
508 )))
509
510 (((
511 506.9 - SF7BW125 to SF12BW125
512 )))
513
514 (((
515 507.1 - SF7BW125 to SF12BW125
516 )))
517
518 (((
519 507.3 - SF7BW125 to SF12BW125
520 )))
521
522 (((
523 507.5 - SF7BW125 to SF12BW125
524 )))
525
526 (((
527 507.7 - SF7BW125 to SF12BW125
528 )))
529
530 (((
531 507.9 - SF7BW125 to SF12BW125
532 )))
533
534 (((
535 508.1 - SF7BW125 to SF12BW125
536 )))
537
538 (((
539 505.3 - SF12BW125 (RX2 downlink only)
540 )))
541
542
543
544 === 2.6.4  AU915-928(AU915) ===
545
546 (((
547 Default use CHE=2
548
549 (% style="color:blue" %)**Uplink:**
550
551 916.8 - SF7BW125 to SF12BW125
552
553 917.0 - SF7BW125 to SF12BW125
554
555 917.2 - SF7BW125 to SF12BW125
556
557 917.4 - SF7BW125 to SF12BW125
558
559 917.6 - SF7BW125 to SF12BW125
560
561 917.8 - SF7BW125 to SF12BW125
562
563 918.0 - SF7BW125 to SF12BW125
564
565 918.2 - SF7BW125 to SF12BW125
566
567
568 (% style="color:blue" %)**Downlink:**
569
570 923.3 - SF7BW500 to SF12BW500
571
572 923.9 - SF7BW500 to SF12BW500
573
574 924.5 - SF7BW500 to SF12BW500
575
576 925.1 - SF7BW500 to SF12BW500
577
578 925.7 - SF7BW500 to SF12BW500
579
580 926.3 - SF7BW500 to SF12BW500
581
582 926.9 - SF7BW500 to SF12BW500
583
584 927.5 - SF7BW500 to SF12BW500
585
586 923.3 - SF12BW500(RX2 downlink only)
587
588
589
590 )))
591
592 === 2.6.5  AS920-923 & AS923-925 (AS923) ===
593
594 (((
595 (% style="color:blue" %)**Default Uplink channel:**
596 )))
597
598 (((
599 923.2 - SF7BW125 to SF10BW125
600 )))
601
602 (((
603 923.4 - SF7BW125 to SF10BW125
604 )))
605
606 (((
607
608 )))
609
610 (((
611 (% style="color:blue" %)**Additional Uplink Channel**:
612 )))
613
614 (((
615 (OTAA mode, channel added by JoinAccept message)
616 )))
617
618 (((
619
620 )))
621
622 (((
623 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
624 )))
625
626 (((
627 922.2 - SF7BW125 to SF10BW125
628 )))
629
630 (((
631 922.4 - SF7BW125 to SF10BW125
632 )))
633
634 (((
635 922.6 - SF7BW125 to SF10BW125
636 )))
637
638 (((
639 922.8 - SF7BW125 to SF10BW125
640 )))
641
642 (((
643 923.0 - SF7BW125 to SF10BW125
644 )))
645
646 (((
647 922.0 - SF7BW125 to SF10BW125
648 )))
649
650 (((
651
652 )))
653
654 (((
655 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
656 )))
657
658 (((
659 923.6 - SF7BW125 to SF10BW125
660 )))
661
662 (((
663 923.8 - SF7BW125 to SF10BW125
664 )))
665
666 (((
667 924.0 - SF7BW125 to SF10BW125
668 )))
669
670 (((
671 924.2 - SF7BW125 to SF10BW125
672 )))
673
674 (((
675 924.4 - SF7BW125 to SF10BW125
676 )))
677
678 (((
679 924.6 - SF7BW125 to SF10BW125
680 )))
681
682 (((
683
684 )))
685
686 (((
687 (% style="color:blue" %)**Downlink:**
688 )))
689
690 (((
691 Uplink channels 1-8 (RX1)
692 )))
693
694 (((
695 923.2 - SF10BW125 (RX2)
696 )))
697
698
699
700 === 2.6.6  KR920-923 (KR920) ===
701
702 (((
703 (% style="color:blue" %)**Default channel:**
704 )))
705
706 (((
707 922.1 - SF7BW125 to SF12BW125
708 )))
709
710 (((
711 922.3 - SF7BW125 to SF12BW125
712 )))
713
714 (((
715 922.5 - SF7BW125 to SF12BW125
716 )))
717
718 (((
719
720 )))
721
722 (((
723 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
724 )))
725
726 (((
727 922.1 - SF7BW125 to SF12BW125
728 )))
729
730 (((
731 922.3 - SF7BW125 to SF12BW125
732 )))
733
734 (((
735 922.5 - SF7BW125 to SF12BW125
736 )))
737
738 (((
739 922.7 - SF7BW125 to SF12BW125
740 )))
741
742 (((
743 922.9 - SF7BW125 to SF12BW125
744 )))
745
746 (((
747 923.1 - SF7BW125 to SF12BW125
748 )))
749
750 (((
751 923.3 - SF7BW125 to SF12BW125
752 )))
753
754 (((
755
756 )))
757
758 (((
759 (% style="color:blue" %)**Downlink:**
760 )))
761
762 (((
763 Uplink channels 1-7(RX1)
764 )))
765
766 (((
767 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
768 )))
769
770
771
772 === 2.6.7  IN865-867 (IN865) ===
773
774 (((
775 (% style="color:blue" %)**Uplink:**
776 )))
777
778 (((
779 865.0625 - SF7BW125 to SF12BW125
780 )))
781
782 (((
783 865.4025 - SF7BW125 to SF12BW125
784 )))
785
786 (((
787 865.9850 - SF7BW125 to SF12BW125
788 )))
789
790 (((
791
792 )))
793
794 (((
795 (% style="color:blue" %)**Downlink:**
796 )))
797
798 (((
799 Uplink channels 1-3 (RX1)
800 )))
801
802 (((
803 866.550 - SF10BW125 (RX2)
804 )))
805
806
807
808 == 2.7  LED Indicator ==
809
810 The LDDS75 has an internal LED which is to show the status of different state.
811
812
813 * Blink once when device power on.
814 * The device detects the sensor and flashes 5 times.
815 * Solid ON for 5 seconds once device successful Join the network.
816 * Blink once when device transmit a packet.
817
818 == 2.8  ​Firmware Change Log ==
819
820
821 **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/]]
822
823
824 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
825
826
827
828 == 2.9  Mechanical ==
829
830
831 [[image:image-20220610172003-1.png]]
832
833 [[image:image-20220610172003-2.png]]
834
835
836 == 2.10  Battery Analysis ==
837
838 === 2.10.1  Battery Type ===
839
840 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.
841
842
843 The battery related documents as below:
844
845 * (((
846 [[ Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
847 )))
848 * (((
849 [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
850 )))
851 * (((
852 [[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]]
853 )))
854
855 [[image:image-20220610172400-3.png]]
856
857
858
859 === 2.10.2  Replace the battery ===
860
861 (((
862 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.
863 )))
864
865 (((
866
867 )))
868
869 (((
870 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)
871 )))
872
873
874
875 = 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
876
877 (((
878 (((
879 Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
880 )))
881 )))
882
883 * (((
884 (((
885 AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
886 )))
887 )))
888 * (((
889 (((
890 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
891 )))
892 )))
893
894 (((
895 (((
896
897 )))
898
899 (((
900 There are two kinds of commands to configure LDDS75, they are:
901 )))
902 )))
903
904 * (((
905 (((
906 (% style="color:#4f81bd" %)** General Commands**.
907 )))
908 )))
909
910 (((
911 (((
912 These commands are to configure:
913 )))
914 )))
915
916 * (((
917 (((
918 General system settings like: uplink interval.
919 )))
920 )))
921 * (((
922 (((
923 LoRaWAN protocol & radio related command.
924 )))
925 )))
926
927 (((
928 (((
929 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]]
930 )))
931 )))
932
933 (((
934 (((
935
936 )))
937 )))
938
939 * (((
940 (((
941 (% style="color:#4f81bd" %)** Commands special design for LDDS75**
942 )))
943 )))
944
945 (((
946 (((
947 These commands only valid for LDDS75, as below:
948 )))
949 )))
950
951
952
953 == 3.1  Access AT Commands ==
954
955 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.
956
957 [[image:image-20220610172924-4.png||height="483" width="988"]]
958
959
960 Or if you have below board, use below connection:
961
962
963 [[image:image-20220610172924-5.png]]
964
965
966 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:
967
968
969 [[image:image-20220610172924-6.png||height="601" width="860"]]
970
971
972
973 == 3.2  Set Transmit Interval Time ==
974
975 Feature: Change LoRaWAN End Node Transmit Interval.
976
977 (% style="color:#037691" %)**AT Command: AT+TDC**
978
979 [[image:image-20220610173409-7.png]]
980
981
982 (((
983 (% style="color:#037691" %)**Downlink Command: 0x01**
984 )))
985
986 (((
987 (((
988 Format: Command Code (0x01) followed by 3 bytes time value.
989
990 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
991
992 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
993 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
994 )))
995
996
997
998 )))
999
1000 == 3.3  Set Interrupt Mode ==
1001
1002 Feature, Set Interrupt mode for GPIO_EXIT.
1003
1004 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1005
1006 [[image:image-20220610174917-9.png]]
1007
1008
1009 (% style="color:#037691" %)**Downlink Command: 0x06**
1010
1011 Format: Command Code (0x06) followed by 3 bytes.
1012
1013 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1014
1015 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1016 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1017
1018 = 4.  FAQ =
1019
1020 == 4.1  What is the frequency plan for LDDS75? ==
1021
1022 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"]]
1023
1024
1025
1026 == 4.2  How to change the LoRa Frequency Bands/Region ==
1027
1028 You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1029 When downloading the images, choose the required image file for download. ​
1030
1031
1032
1033 == 4.3  Can I use LDDS75 in condensation environment? ==
1034
1035 LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1036
1037
1038
1039 = 5.  Trouble Shooting =
1040
1041 == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1042
1043 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1044
1045
1046 == 5.2  AT Command input doesn't work ==
1047
1048 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.
1049
1050 (((
1051
1052 )))
1053
1054
1055 = 6.  Order Info =
1056
1057
1058 Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1059
1060
1061 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
1062
1063 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1064 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1065 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1066 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1067 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1068 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1069 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1070 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1071
1072 (% style="color:blue" %)**YY**(%%): Battery Option
1073
1074 * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1075 * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1076
1077 = 7. ​ Packing Info =
1078
1079
1080 **Package Includes**:
1081
1082 * LDDS75 LoRaWAN Distance Detection Sensor x 1
1083
1084 **Dimension and weight**:
1085
1086 * Device Size: cm
1087 * Device Weight: g
1088 * Package Size / pcs : cm
1089 * Weight / pcs : g
1090
1091 = 8.  ​Support =
1092
1093 * 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.
1094 * 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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