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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
	79	+
75	75	(% style="color:#037691" %)**Common DC Characteristics:**
76	76
77	77	* Supply Voltage: 2.1v ~~ 3.6v
78	78	* Operating Temperature: -40 ~~ 85°C
79	79
	85	+
80	80	(% style="color:#037691" %)**NB-IoT Spec:**
81	81
82	82	* - B1 @H-FDD: 2100MHz
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86	86	* - B20 @H-FDD: 800MHz
87	87	* - B28 @H-FDD: 700MHz
88	88
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89	89	(% style="color:#037691" %)**Battery:**
90	90
91	91	* Li/SOCI2 un-chargeable battery
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94	94	* Max continuously current: 130mA
95	95	* Max boost current: 2A, 1 second
96	96
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97	97	(% style="color:#037691" %)**Power Consumption**
98	98
99	99	* STOP Mode: 10uA @ 3.3v
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100	100	* Max transmit power: 350mA@3.3v
101	101
102	102
	111	+
	112	+
103	103	== ​1.4  Applications ==
104	104
	115	+
105	105	* Smart Buildings & Home Automation
106	106	* Logistics and Supply Chain Management
107	107	* Smart Metering
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113	113	​
114	114
115	115
	127	+
	128	+
116	116	== 1.5  Pin Definitions ==
117	117
118	118
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122	122
123	123	= 2.  Use NDDS75 to communicate with IoT Server =
124	124
	138	+
125	125	== 2.1  How it works ==
126	126
	141	+
127	127	(((
128	128	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.
129	129	)))
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149	149
150	150	=== 2.2.1 Test Requirement ===
151	151
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152	152	(((
153	153	To use NDDS75 in your city, make sure meet below requirements:
154	154	)))
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158	158	* Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
159	159
160	160	(((
161		-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.
162	162	)))
163	163
164	164
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168	168
169	169	=== 2.2.2 Insert SIM card ===
170	170
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171	171	(((
172	172	Insert the NB-IoT Card get from your provider.
173	173	)))
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183	183
184	184	=== 2.2.3 Connect USB – TTL to NDDS75 to configure it ===
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186	186	(((
187	187	(((
188	188	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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191	191
192	192	[[image:image-20220709092052-2.png]]
193	193
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194	194	**Connection:**
195	195
196	196	(% style="background-color:yellow" %)USB TTL GND <~-~-~-~-> GND
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214	214
215	215	[[image:1657329814315-101.png]]
216	216
	236	+
217	217	(((
218		-(% 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]]**
219	219	)))
220	220
221	221
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222	222
223	223	=== 2.2.4 Use CoAP protocol to uplink data ===
224	224
225		-(% 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/]]
226	226
	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/]]**
227	227
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228	228	(((
229	229	**Use below commands:**
230	230	)))
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246	246	[[image:1657330452568-615.png]]
247	247
248	248
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249	249	(((
250	250	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.
251	251	)))
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261	261	* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5601   ** (%%) ~/~/ to set UDP server address and port
262	262	* (% style="color:blue" %)**AT+CFM=1       ** (%%) ~/~/ If the server does not respond, this command is unnecessary
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264	264	[[image:1657330501006-241.png]]
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266	266
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279	279	* (% style="color:blue" %)**AT+PUBTOPIC=NDDS75_PUB                 **(%%)~/~/Set the sending topic of MQTT
280	280	* (% style="color:blue" %)**AT+SUBTOPIC=NDDS75_SUB          **(%%) ~/~/Set the subscription topic of MQTT
281	281
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282	282	[[image:1657249978444-674.png]]
283	283
284	284
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297	297	* (% style="color:blue" %)**AT+PRO=4   ** (%%) ~/~/ Set to use TCP protocol to uplink
298	298	* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5600   **(%%) ~/~/ to set TCP server address and port
299	299
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300	300	[[image:image-20220709093918-1.png]]
301	301
302	302
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306	306
307	307	=== 2.2.8 Change Update Interval ===
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309	309	User can use below command to change the (% style="color:green" %)**uplink interval**.
310	310
311	311	* (% style="color:blue" %)**AT+TDC=600      ** (%%)~/~/ Set Update Interval to 600s
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315	315	)))
316	316
317	317	(((
318		-(% 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.**
319	319	)))
320	320
321	321
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322	322
323	323	== 2.3  Uplink Payload ==
324	324
	351	+
325	325	In this mode, uplink payload includes in total 14 bytes
326	326
327	327
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338	338
339	339	[[image:1657331036973-987.png]]
340	340
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341	341	(((
342	342	The payload is ASCII string, representative same HEX:
343	343	)))
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375	375
376	376	=== 2.4.1  Device ID ===
377	377
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378	378	(((
379	379	By default, the Device ID equal to the last 6 bytes of IMEI.
380	380	)))
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381	381
382	382	(((
383	383	User can use (% style="color:blue" %)**AT+DEUI**(%%) to set Device ID
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384	384	)))
385	385
386	386	(((
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399	399
400	400	=== 2.4.2  Version Info ===
401	401
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402	402	(((
403	403	Specify the software version: 0x64=100, means firmware version 1.00.
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411	411
412	412	=== 2.4.3  Battery Info ===
413	413
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414	414	(((
415	415	Ex1: 0x0B45 = 2885mV
416	416	)))
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423	423
424	424	=== 2.4.4  Signal Strength ===
425	425
	459	+
426	426	(((
427	427	NB-IoT Network signal Strength.
428	428	)))
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455	455
456	456	=== 2.4.5  Distance ===
457	457
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458	458	Get the distance. Flat object range 280mm - 7500mm.
459	459
460	460	(((
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477	477
478	478	=== 2.4.6  Digital Interrupt ===
479	479
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480	480	(((
481	481	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.
482	482	)))
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511	511
512	512	=== 2.4.7  ​+5V Output ===
513	513
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514	514	(((
515	515	NDDS75 will enable +5V output before all sampling and disable the +5v after all sampling.
516	516	)))
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518	518
519	519	(((
520	520	The 5V output time can be controlled by AT Command.
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	559	+
521	521	)))
522	522
523	523	(((
524	524	(% style="color:blue" %)**AT+5VT=1000**
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	565	+
525	525	)))
526	526
527	527	(((
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532	532
533	533	== 2.5  Downlink Payload ==
534	534
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535	535	By default, NDDS75 prints the downlink payload to console port.
536	536
537	537	[[image:image-20220709100028-1.png]]
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603	603
604	604
605	605	(((
606		-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]]
607	607	)))
608	608
609	609	(((
610		-[[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	+
611	611	)))
612	612
613		-
614	614	(((
615		-Upgrade Instruction: [[Upgrade_Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
	656	+Upgrade Instruction: [[Upgrade Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
616	616	)))
617	617
618	618
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619	619
620	620	== 2.8  ​Battery Analysis ==
621	621
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622	622	=== 2.8.1  ​Battery Type ===
623	623
624	624
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646	646
647	647	=== 2.8.2  Power consumption Analyze ===
648	648
	691	+
649	649	(((
650	650	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.
651	651	)))
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684	684
685	685	=== 2.8.3  ​Battery Note ===
686	686
	730	+
687	687	(((
688	688	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.
689	689	)))
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692	692
693	693	=== 2.8.4  Replace the battery ===
694	694
	739	+
695	695	(((
696	696	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).
697	697	)))
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700	700
701	701	= 3. ​ Access NB-IoT Module =
702	702
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703	703	(((
704	704	Users can directly access the AT command set of the NB-IoT module.
705	705	)))
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706	706
707	707	(((
708	708	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	+
709	709	)))
710	710
711	711	[[image:1657333200519-600.png]]
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714	714
715	715	= 4.  Using the AT Commands =
716	716
	765	+
717	717	== 4.1  Access AT Commands ==
718	718
719		-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/]]
720	720
	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]]
721	721
	771	+
722	722	AT+<CMD>?  : Help on <CMD>
723	723
724	724	AT+<CMD>         : Run <CMD>
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792	792
793	793	= ​5.  FAQ =
794	794
	845	+
795	795	== 5.1 ​ How to Upgrade Firmware ==
796	796
797	797
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804	804	)))
805	805
806	806	(((
807		-(% 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.**
808	808	)))
809	809
810	810
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811	811
812	812	= 6.  Trouble Shooting =
813	813
	865	+
814	814	== 6.1  ​Connection problem when uploading firmware ==
815	815
816	816
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826	826
827	827	== 6.2  AT Command input doesn't work ==
828	828
	881	+
829	829	(((
830	830	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.
831	831
...	...	@@ -875,5 +875,8 @@
875	875
876	876	= 9.  Support =
877	877
	931	+
878	878	* 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.
879	879	* 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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