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16	16
17	17	= 1.  Introduction =
18	18
	19	+
19	19	== 1.1 ​ What is NDDS75 Distance Detection Sensor ==
20	20
21	21	(((
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56	56
57	57	== 1.2 ​ Features ==
58	58
	60	+
59	59	* NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
60	60	* Ultra low power consumption
61	61	* Distance Detection by Ultrasonic technology
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70	70	* 8500mAh Battery for long term use
71	71
72	72
	75	+
	76	+
73	73	== 1.3  Specification ==
74	74
75	75
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78	78	* Supply Voltage: 2.1v ~~ 3.6v
79	79	* Operating Temperature: -40 ~~ 85°C
80	80
	85	+
81	81	(% style="color:#037691" %)**NB-IoT Spec:**
82	82
83	83	* - B1 @H-FDD: 2100MHz
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87	87	* - B20 @H-FDD: 800MHz
88	88	* - B28 @H-FDD: 700MHz
89	89
	95	+
90	90	(% style="color:#037691" %)**Battery:**
91	91
92	92	* Li/SOCI2 un-chargeable battery
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95	95	* Max continuously current: 130mA
96	96	* Max boost current: 2A, 1 second
97	97
	104	+
98	98	(% style="color:#037691" %)**Power Consumption**
99	99
100	100	* STOP Mode: 10uA @ 3.3v
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101	101	* Max transmit power: 350mA@3.3v
102	102
103	103
	111	+
	112	+
104	104	== ​1.4  Applications ==
105	105
	115	+
106	106	* Smart Buildings & Home Automation
107	107	* Logistics and Supply Chain Management
108	108	* Smart Metering
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114	114	​
115	115
116	116
	127	+
	128	+
117	117	== 1.5  Pin Definitions ==
118	118
119	119
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123	123
124	124	= 2.  Use NDDS75 to communicate with IoT Server =
125	125
	138	+
126	126	== 2.1  How it works ==
127	127
	141	+
128	128	(((
129	129	The NDDS75 is equipped with a NB-IoT module, the pre-loaded firmware in NDDS75 will get environment data from sensors and send the value to local NB-IoT network via the NB-IoT module.  The NB-IoT network will forward this value to IoT server via the protocol defined by NDDS75.
130	130	)))
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150	150
151	151	=== 2.2.1 Test Requirement ===
152	152
	167	+
153	153	(((
154	154	To use NDDS75 in your city, make sure meet below requirements:
155	155	)))
156	156
157	157	* Your local operator has already distributed a NB-IoT Network there.
158		-* The local NB-IoT network used the band that NSE01 supports.
	173	+* The local NB-IoT network used the band that NDDS75 supports.
159	159	* Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
160	160
161	161	(((
162		-Below figure shows our testing structure. Here we have NB-IoT network coverage by China Mobile, the band they use is B8.  The NDDS75 will use CoAP((% style="color:red" %)120.24.4.116:5683)(%%) or raw UDP((% style="color:red" %)120.24.4.116:5601)(%%) or MQTT((% style="color:red" %)120.24.4.116:1883)(%%)or TCP((% style="color:red" %)120.24.4.116:5600)(%%)protocol to send data to the test server
	177	+Below figure shows our testing structure. Here we have NB-IoT network coverage by China Mobile, the band they use is B8.  The NDDS75 will use CoAP((% style="color:red" %)120.24.4.116:5683)(%%) or raw UDP((% style="color:red" %)120.24.4.116:5601)(%%) or MQTT((% style="color:red" %)120.24.4.116:1883)(%%)or TCP((% style="color:red" %)120.24.4.116:5600)(%%)protocol to send data to the test server.
163	163	)))
164	164
165	165
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169	169
170	170	=== 2.2.2 Insert SIM card ===
171	171
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172	172	(((
173	173	Insert the NB-IoT Card get from your provider.
174	174	)))
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184	184
185	185	=== 2.2.3 Connect USB – TTL to NDDS75 to configure it ===
186	186
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187	187	(((
188	188	(((
189	189	User need to configure NDDS75 via serial port to set the (% style="color:blue" %)**Server Address** / **Uplink Topic** (%%)to define where and how-to uplink packets. NDDS75 support AT Commands, user can use a USB to TTL adapter to connect to NDDS75 and use AT Commands to configure it, as below.
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192	192
193	193	[[image:image-20220709092052-2.png]]
194	194
	212	+
195	195	**Connection:**
196	196
197	197	(% style="background-color:yellow" %)USB TTL GND <~-~-~-~-> GND
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215	215
216	216	[[image:1657329814315-101.png]]
217	217
	236	+
218	218	(((
219		-(% style="color:red" %)Note: the valid AT Commands can be found at: (%%)[[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/>>url:https://www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/]]
	238	+(% style="color:red" %)**Note: the valid AT Commands can be found at: **(%%)**[[https:~~/~~/www.dropbox.com/sh/aaq2xcl0bzfu0yd/AAAEAHRa7Io_465ds4Y7-F3aa?dl=0>>https://www.dropbox.com/sh/aaq2xcl0bzfu0yd/AAAEAHRa7Io_465ds4Y7-F3aa?dl=0]]**
220	220	)))
221	221
222	222
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223	223
224	224	=== 2.2.4 Use CoAP protocol to uplink data ===
225	225
226		-(% style="color:red" %)Note: if you don't have CoAP server, you can refer this link to set up one: (%%)[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/>>http://wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/]]
227	227
	246	+(% style="color:red" %)**Note: if you don't have CoAP server, you can refer this link to set up one: **(%%)**[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/>>http://wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/]]**
228	228
	248	+
229	229	(((
230	230	**Use below commands:**
231	231	)))
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247	247	[[image:1657330452568-615.png]]
248	248
249	249
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250	250	(((
251	251	After configure the server address and (% style="color:green" %)**reset the device**(%%) (via AT+ATZ ), NDDS75 will start to uplink sensor values to CoAP server.
252	252	)))
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262	262	* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5601   ** (%%) ~/~/ to set UDP server address and port
263	263	* (% style="color:blue" %)**AT+CFM=1       ** (%%) ~/~/ If the server does not respond, this command is unnecessary
264	264
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265	265	[[image:1657330501006-241.png]]
266	266
267	267
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280	280	* (% style="color:blue" %)**AT+PUBTOPIC=NDDS75_PUB                 **(%%)~/~/Set the sending topic of MQTT
281	281	* (% style="color:blue" %)**AT+SUBTOPIC=NDDS75_SUB          **(%%) ~/~/Set the subscription topic of MQTT
282	282
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283	283	[[image:1657249978444-674.png]]
284	284
285	285
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298	298	* (% style="color:blue" %)**AT+PRO=4   ** (%%) ~/~/ Set to use TCP protocol to uplink
299	299	* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5600   **(%%) ~/~/ to set TCP server address and port
300	300
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301	301	[[image:image-20220709093918-1.png]]
302	302
303	303
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307	307
308	308	=== 2.2.8 Change Update Interval ===
309	309
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310	310	User can use below command to change the (% style="color:green" %)**uplink interval**.
311	311
312	312	* (% style="color:blue" %)**AT+TDC=600      ** (%%)~/~/ Set Update Interval to 600s
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316	316	)))
317	317
318	318	(((
319		-(% style="color:red" %)1. By default, the device will send an uplink message every 1 hour.
	344	+(% style="color:red" %)**1. By default, the device will send an uplink message every 1 hour.**
320	320	)))
321	321
322	322
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323	323
324	324	== 2.3  Uplink Payload ==
325	325
	351	+
326	326	In this mode, uplink payload includes in total 14 bytes
327	327
328	328
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339	339
340	340	[[image:1657331036973-987.png]]
341	341
	368	+
342	342	(((
343	343	The payload is ASCII string, representative same HEX:
344	344	)))
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376	376
377	377	=== 2.4.1  Device ID ===
378	378
	406	+
379	379	(((
380	380	By default, the Device ID equal to the last 6 bytes of IMEI.
381	381	)))
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382	382
383	383	(((
384	384	User can use (% style="color:blue" %)**AT+DEUI**(%%) to set Device ID
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	414	+
385	385	)))
386	386
387	387	(((
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400	400
401	401	=== 2.4.2  Version Info ===
402	402
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403	403	(((
404	404	Specify the software version: 0x64=100, means firmware version 1.00.
405	405	)))
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412	412
413	413	=== 2.4.3  Battery Info ===
414	414
	446	+
415	415	(((
416	416	Ex1: 0x0B45 = 2885mV
417	417	)))
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424	424
425	425	=== 2.4.4  Signal Strength ===
426	426
	459	+
427	427	(((
428	428	NB-IoT Network signal Strength.
429	429	)))
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456	456
457	457	=== 2.4.5  Distance ===
458	458
	492	+
459	459	Get the distance. Flat object range 280mm - 7500mm.
460	460
461	461	(((
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478	478
479	479	=== 2.4.6  Digital Interrupt ===
480	480
	515	+
481	481	(((
482	482	Digital Interrupt refers to pin (% style="color:blue" %)**GPIO_EXTI**(%%), and there are different trigger methods. When there is a trigger, the NDDS75 will send a packet to the server.
483	483	)))
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512	512
513	513	=== 2.4.7  ​+5V Output ===
514	514
	550	+
515	515	(((
516	516	NDDS75 will enable +5V output before all sampling and disable the +5v after all sampling.
517	517	)))
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519	519
520	520	(((
521	521	The 5V output time can be controlled by AT Command.
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	559	+
522	522	)))
523	523
524	524	(((
525	525	(% style="color:blue" %)**AT+5VT=1000**
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	565	+
526	526	)))
527	527
528	528	(((
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533	533
534	534	== 2.5  Downlink Payload ==
535	535
	576	+
536	536	By default, NDDS75 prints the downlink payload to console port.
537	537
538	538	[[image:image-20220709100028-1.png]]
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604	604
605	605
606	606	(((
607		-Download URL & Firmware Change log
	648	+Download URL & Firmware Change log:  [[https:~~/~~/www.dropbox.com/sh/3hb94r49iszmstx/AADvSJcXxahEUfxqKWVnZx-La?dl=0>>https://www.dropbox.com/sh/3hb94r49iszmstx/AADvSJcXxahEUfxqKWVnZx-La?dl=0]]
608	608	)))
609	609
610	610	(((
611		-[[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/Firmware/>>url:https://www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/Firmware/]]
	652	+
612	612	)))
613	613
614		-
615	615	(((
616		-Upgrade Instruction: [[Upgrade_Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
	656	+Upgrade Instruction: [[Upgrade Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
617	617	)))
618	618
619	619
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620	620
621	621	== 2.8  ​Battery Analysis ==
622	622
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623	623	=== 2.8.1  ​Battery Type ===
624	624
625	625
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647	647
648	648	=== 2.8.2  Power consumption Analyze ===
649	649
	691	+
650	650	(((
651	651	Dragino battery powered product are all runs in Low Power mode. We have an update battery calculator which base on the measurement of the real device. User can use this calculator to check the battery life and calculate the battery life if want to use different transmit interval.
652	652	)))
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685	685
686	686	=== 2.8.3  ​Battery Note ===
687	687
	730	+
688	688	(((
689	689	The Li-SICO battery is designed for small current / long period application. It is not good to use a high current, short period transmit method. The recommended minimum period for use of this battery is 5 minutes. If you use a shorter period time to transmit LoRa, then the battery life may be decreased.
690	690	)))
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693	693
694	694	=== 2.8.4  Replace the battery ===
695	695
	739	+
696	696	(((
697	697	The default battery pack of NDDS75 includes a ER26500 plus super capacitor. If user can't find this pack locally, they can find ER26500 or equivalence without the SPC1520 capacitor, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes).
698	698	)))
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701	701
702	702	= 3. ​ Access NB-IoT Module =
703	703
	748	+
704	704	(((
705	705	Users can directly access the AT command set of the NB-IoT module.
706	706	)))
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707	707
708	708	(((
709	709	The AT Command set can refer the BC35-G NB-IoT Module AT Command: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=datasheet/other_vendors/BC35-G/>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/other_vendors/BC35-G/]]
	755	+
	756	+
710	710	)))
711	711
712	712	[[image:1657333200519-600.png]]
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715	715
716	716	= 4.  Using the AT Commands =
717	717
	765	+
718	718	== 4.1  Access AT Commands ==
719	719
720		-See this link for detail: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/>>url:http://www.dragino.com/downloads/index.php?dir=NB-IoT/NBSN50/]]
721	721
	769	+See this link for detail:  [[https:~~/~~/www.dropbox.com/sh/aaq2xcl0bzfu0yd/AAAEAHRa7Io_465ds4Y7-F3aa?dl=0>>https://www.dropbox.com/sh/aaq2xcl0bzfu0yd/AAAEAHRa7Io_465ds4Y7-F3aa?dl=0]]
722	722
	771	+
723	723	AT+<CMD>?  : Help on <CMD>
724	724
725	725	AT+<CMD>         : Run <CMD>
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793	793
794	794	= ​5.  FAQ =
795	795
	845	+
796	796	== 5.1 ​ How to Upgrade Firmware ==
797	797
798	798
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805	805	)))
806	806
807	807	(((
808		-(% style="color:red" %)Notice, NDDS75 and LDDS75 share the same mother board. They use the same connection and method to update.
	858	+(% style="color:red" %)**Notice, NDDS75 and LDDS75 share the same mother board. They use the same connection and method to update.**
809	809	)))
810	810
811	811
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812	812
813	813	= 6.  Trouble Shooting =
814	814
	865	+
815	815	== 6.1  ​Connection problem when uploading firmware ==
816	816
817	817
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827	827
828	828	== 6.2  AT Command input doesn't work ==
829	829
	881	+
830	830	(((
831	831	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.
832	832
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876	876
877	877	= 9.  Support =
878	878
	931	+
879	879	* 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.
880	880	* 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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