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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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71	71
72	72
73	73
	76	+
74	74	== 1.3  Specification ==
75	75
	79	+
76	76	(% style="color:#037691" %)**Common DC Characteristics:**
77	77
78	78	* Supply Voltage: 2.1v ~~ 3.6v
79	79	* Operating Temperature: -40 ~~ 85°C
80	80
	85	+
	86	+
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
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	97	+
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
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98	98	(% style="color:#037691" %)**Power Consumption**
99	99
100	100	* STOP Mode: 10uA @ 3.3v
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102	102
103	103
104	104
	115	+
105	105	== ​1.4  Applications ==
106	106
	118	+
107	107	* Smart Buildings & Home Automation
108	108	* Logistics and Supply Chain Management
109	109	* Smart Metering
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115	115	​
116	116
117	117
	130	+
	131	+
118	118	== 1.5  Pin Definitions ==
119	119
120	120
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124	124
125	125	= 2.  Use NDDS75 to communicate with IoT Server =
126	126
	141	+
127	127	== 2.1  How it works ==
128	128
	144	+
129	129	(((
130	130	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.
131	131	)))
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151	151
152	152	=== 2.2.1 Test Requirement ===
153	153
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154	154	(((
155	155	To use NDDS75 in your city, make sure meet below requirements:
156	156	)))
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159	159	* The local NB-IoT network used the band that NDDS75 supports.
160	160	* Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
161	161
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162	162	(((
163		-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
	182	+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.
164	164	)))
165	165
166	166
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170	170
171	171	=== 2.2.2 Insert SIM card ===
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173	173	(((
174	174	Insert the NB-IoT Card get from your provider.
175	175	)))
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185	185
186	186	=== 2.2.3 Connect USB – TTL to NDDS75 to configure it ===
187	187
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188	188	(((
189	189	(((
190	190	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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193	193
194	194	[[image:image-20220709092052-2.png]]
195	195
	217	+
196	196	**Connection:**
197	197
198	198	(% style="background-color:yellow" %)USB TTL GND <~-~-~-~-> GND
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216	216
217	217	[[image:1657329814315-101.png]]
218	218
	241	+
219	219	(((
220		-(% 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/]]
	243	+(% 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]]**
221	221	)))
222	222
223	223
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224	224
225	225	=== 2.2.4 Use CoAP protocol to uplink data ===
226	226
227		-(% 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
	251	+(% 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/]]**
229	229
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230	230	(((
231	231	**Use below commands:**
232	232	)))
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239	239	)))
240	240	* (((
241	241	(% style="color:blue" %)**AT+URI=5,11,"mqtt",11,"coap",12,"0",15,"c=text1",23,"0" ** (%%) ~/~/Set COAP resource path
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242	242	)))
243	243
244	244	(((
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248	248	[[image:1657330452568-615.png]]
249	249
250	250
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251	251	(((
252	252	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.
253	253	)))
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263	263	* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5601   ** (%%) ~/~/ to set UDP server address and port
264	264	* (% style="color:blue" %)**AT+CFM=1       ** (%%) ~/~/ If the server does not respond, this command is unnecessary
265	265
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266	266	[[image:1657330501006-241.png]]
267	267
268	268
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281	281	* (% style="color:blue" %)**AT+PUBTOPIC=NDDS75_PUB                 **(%%)~/~/Set the sending topic of MQTT
282	282	* (% style="color:blue" %)**AT+SUBTOPIC=NDDS75_SUB          **(%%) ~/~/Set the subscription topic of MQTT
283	283
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284	284	[[image:1657249978444-674.png]]
285	285
286	286
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299	299	* (% style="color:blue" %)**AT+PRO=4   ** (%%) ~/~/ Set to use TCP protocol to uplink
300	300	* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5600   **(%%) ~/~/ to set TCP server address and port
301	301
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302	302	[[image:image-20220709093918-1.png]]
303	303
304	304
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308	308
309	309	=== 2.2.8 Change Update Interval ===
310	310
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311	311	User can use below command to change the (% style="color:green" %)**uplink interval**.
312	312
313	313	* (% style="color:blue" %)**AT+TDC=600      ** (%%)~/~/ Set Update Interval to 600s
314	314
315		-(((
316		-(% style="color:red" %)**NOTE:**
317		-)))
318	318
	351	+
319	319	(((
320		-(% style="color:red" %)1. By default, the device will send an uplink message every 1 hour.
	353	+(% style="color:red" %)**NOTE: By default, the device will send an uplink message every 1 hour.**
321	321	)))
322	322
323	323
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324	324
325	325	== 2.3  Uplink Payload ==
326	326
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327	327	In this mode, uplink payload includes in total 14 bytes
328	328
329	329
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340	340
341	341	[[image:1657331036973-987.png]]
342	342
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343	343	(((
344	344	The payload is ASCII string, representative same HEX:
345	345	)))
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377	377
378	378	=== 2.4.1  Device ID ===
379	379
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380	380	(((
381	381	By default, the Device ID equal to the last 6 bytes of IMEI.
382	382	)))
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383	383
384	384	(((
385	385	User can use (% style="color:blue" %)**AT+DEUI**(%%) to set Device ID
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386	386	)))
387	387
388	388	(((
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401	401
402	402	=== 2.4.2  Version Info ===
403	403
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404	404	(((
405	405	Specify the software version: 0x64=100, means firmware version 1.00.
406	406	)))
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413	413
414	414	=== 2.4.3  Battery Info ===
415	415
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416	416	(((
417	417	Ex1: 0x0B45 = 2885mV
418	418	)))
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425	425
426	426	=== 2.4.4  Signal Strength ===
427	427
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428	428	(((
429	429	NB-IoT Network signal Strength.
430	430	)))
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457	457
458	458	=== 2.4.5  Distance ===
459	459
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460	460	Get the distance. Flat object range 280mm - 7500mm.
461	461
462	462	(((
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479	479
480	480	=== 2.4.6  Digital Interrupt ===
481	481
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482	482	(((
483	483	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.
484	484	)))
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513	513
514	514	=== 2.4.7  ​+5V Output ===
515	515
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516	516	(((
517	517	NDDS75 will enable +5V output before all sampling and disable the +5v after all sampling.
518	518	)))
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520	520
521	521	(((
522	522	The 5V output time can be controlled by AT Command.
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	568	+
523	523	)))
524	524
525	525	(((
526	526	(% style="color:blue" %)**AT+5VT=1000**
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	574	+
527	527	)))
528	528
529	529	(((
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534	534
535	535	== 2.5  Downlink Payload ==
536	536
	585	+
537	537	By default, NDDS75 prints the downlink payload to console port.
538	538
539	539	[[image:image-20220709100028-1.png]]
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605	605
606	606
607	607	(((
608		-Download URL & Firmware Change log
	657	+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]]
609	609	)))
610	610
611	611	(((
612		-[[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/]]
	661	+
613	613	)))
614	614
615		-
616	616	(((
617		-Upgrade Instruction: [[Upgrade_Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
	665	+Upgrade Instruction: [[Upgrade Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
618	618	)))
619	619
620	620
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621	621
622	622	== 2.8  ​Battery Analysis ==
623	623
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624	624	=== 2.8.1  ​Battery Type ===
625	625
626	626
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648	648
649	649	=== 2.8.2  Power consumption Analyze ===
650	650
	700	+
651	651	(((
652	652	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.
653	653	)))
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686	686
687	687	=== 2.8.3  ​Battery Note ===
688	688
	739	+
689	689	(((
690	690	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.
691	691	)))
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694	694
695	695	=== 2.8.4  Replace the battery ===
696	696
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697	697	(((
698	698	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).
699	699	)))
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702	702
703	703	= 3. ​ Access NB-IoT Module =
704	704
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705	705	(((
706	706	Users can directly access the AT command set of the NB-IoT module.
707	707	)))
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708	708
709	709	(((
710	710	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/]]
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711	711	)))
712	712
713	713	[[image:1657333200519-600.png]]
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716	716
717	717	= 4.  Using the AT Commands =
718	718
	774	+
719	719	== 4.1  Access AT Commands ==
720	720
721		-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/]]
722	722
	778	+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]]
723	723
	780	+
724	724	AT+<CMD>?  : Help on <CMD>
725	725
726	726	AT+<CMD>         : Run <CMD>
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794	794
795	795	= ​5.  FAQ =
796	796
	854	+
797	797	== 5.1 ​ How to Upgrade Firmware ==
798	798
799	799
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806	806	)))
807	807
808	808	(((
809		-(% style="color:red" %)Notice, NDDS75 and LDDS75 share the same mother board. They use the same connection and method to update.
	867	+(% style="color:red" %)**Notice, NDDS75 and LDDS75 share the same mother board. They use the same connection and method to update.**
810	810	)))
811	811
812	812
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813	813
814	814	= 6.  Trouble Shooting =
815	815
	874	+
816	816	== 6.1  ​Connection problem when uploading firmware ==
817	817
818	818
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828	828
829	829	== 6.2  AT Command input doesn't work ==
830	830
	890	+
831	831	(((
832	832	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.
833	833
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860	860	(((
861	861
862	862
	923	+
863	863	(% style="color:#037691" %)**Dimension and weight**:
864	864
865	865	* Device Size: 13.0 x 5 x 4.5 cm
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877	877
878	878	= 9.  Support =
879	879
	941	+
880	880	* 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.
881	881	* 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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