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17	17
18	18	= 1.  Introduction =
19	19
	20	+
20	20	== 1.1 ​ What is N95S31B NB-IoT Sensor Node ==
21	21
22	22	(((
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55	55
56	56	== 1.2 ​ Features ==
57	57
	59	+
58	58	* NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
59	59	* Monitor Temperature & Humidity via SHT31
60	60	* AT Commands to change parameters
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68	68
69	69
70	70
	73	+
71	71	== 1.3  Specification ==
72	72
73	73
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76	76	* Supply Voltage: 2.1v ~~ 3.6v
77	77	* Operating Temperature: -40 ~~ 85°C
78	78
	82	+
	83	+
79	79	(% style="color:#037691" %)**NB-IoT Spec:**
80	80
81	81	* - B1 @H-FDD: 2100MHz
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85	85	* - B20 @H-FDD: 800MHz
86	86	* - B28 @H-FDD: 700MHz
87	87
	93	+
	94	+
88	88	(% style="color:#037691" %)**Battery:**
89	89
90	90	* Li/SOCI2 un-chargeable battery
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95	95
96	96
97	97
	105	+
98	98	== ​1.4  Applications ==
99	99
	108	+
100	100	* Smart Buildings & Home Automation
101	101	* Logistics and Supply Chain Management
102	102	* Smart Metering
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108	108	​
109	109
110	110
111		-== 1.5  Pin Definitions ==
112	112
	121	+== 1.5  Pin Definitions & Switch ==
	122	+
	123	+
113	113	N95S31B use the mother board from NBSN95 which as below.
114	114
	126	+
115	115	[[image:image-20220709144723-1.png]]
116	116
117	117
	130	+
118	118	=== 1.5.1 Jumper JP2 ===
119	119
	133	+
120	120	Power on Device when put this jumper.
121	121
122	122
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123	123
124	124	=== 1.5.2 BOOT MODE / SW1 ===
125	125
	140	+
126	126	(((
127	127	1) ISP: upgrade mode, device won't have any signal in this mode. but ready for upgrade firmware. LED won't work. Firmware won't run.
128	128	)))
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135	135
136	136	=== 1.5.3 Reset Button ===
137	137
	153	+
138	138	Press to reboot the device.
139	139
140	140
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141	141
142	142	=== 1.5.4 LED ===
143	143
	160	+
144	144	It will flash:
145	145
146	146	1. When boot the device in flash mode
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148	148
149	149
150	150
	168	+
151	151	= 2.  Use N95S31B to communicate with IoT Server =
152	152
	171	+
153	153	== 2.1  How it works ==
154	154
155	155
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166	166
167	167	)))
168	168
169		-[[image:1657350248151-650.png]]
	188	+[[image:1657520100595-569.png]]
170	170
171	171	(((
172	172
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182	182	[[image:image-20220709150546-2.png]]
183	183
184	184
	204	+
185	185	=== 2.2.1 Test Requirement ===
186	186
187	187
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234	234
235	235	=== 2.2.3  Insert SIM card ===
236	236
	257	+
237	237	(((
238	238	Insert the NB-IoT Card get from your provider.
239	239	)))
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249	249
250	250	=== 2.2.4  Connect USB – TTL to N95S31B to configure it ===
251	251
	273	+
252	252	(((
253	253	(((
254	254	User need to configure N95S31B via serial port to set the (% style="color:blue" %)**Server Address** / **Uplink Topic** (%%)to define where and how-to uplink packets. N95S31B support AT Commands, user can use a USB to TTL adapter to connect to N95S31B and use AT Commands to configure it, as below.
	277	+
	278	+
255	255	)))
256	256	)))
257	257
258	258	[[image:1657351312545-300.png]]
259	259
	284	+
260	260	**Connection:**
261	261
262	262	(% style="background-color:yellow" %)USB TTL GND <~-~-~-~-> GND
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280	280
281	281	[[image:1657329814315-101.png]]
282	282
	308	+
283	283	(((
284		-(% style="color:red" %)Note: the valid AT Commands can be found at:  (%%)[[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/N95S31B/>>url:https://www.dragino.com/downloads/index.php?dir=NB-IoT/N95S31B/]]
	310	+(% style="color:red" %)**Note: the valid AT Commands can be found at:  **(%%)**[[https:~~/~~/www.dropbox.com/sh/mlpd6l05bogvaf6/AABwAJLMttqG7i~~-~~-AyZcQkoua?dl=0>>https://www.dropbox.com/sh/mlpd6l05bogvaf6/AABwAJLMttqG7i--AyZcQkoua?dl=0]]**
285	285	)))
286	286
287	287
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288	288
289	289	=== 2.2.5  Use CoAP protocol to uplink data ===
290	290
291		-(% 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/]]
292	292
	318	+(% 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/]]**
293	293
	320	+
294	294	(((
295	295	**Use below commands:**
296	296	)))
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329	329	* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5601   ** (%%) ~/~/ to set UDP server address and port
330	330	* (% style="color:blue" %)**AT+CFM=1       ** (%%) ~/~/ If the server does not respond, this command is unnecessary
331	331
	359	+
	360	+
332	332	[[image:1657352391268-297.png]]
333	333
334	334
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338	338
339	339	=== 2.2.7  Use MQTT protocol to uplink data ===
340	340
	370	+
341	341	N95S31B supports only plain MQTT now it doesn't support TLS and other related encryption.
342	342
343	343	* (% style="color:blue" %)**AT+PRO=3   ** (%%) ~/~/Set to use MQTT protocol to uplink
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348	348	* (% style="color:blue" %)**AT+PUBTOPIC=f9527                               **(%%)~/~/Set the sending topic of MQTT
349	349	* (% style="color:blue" %)**AT+SUBTOPIC=Ns9527          **(%%) ~/~/Set the subscription topic of MQTT
350	350
	381	+
	382	+
351	351	[[image:1657352634421-276.png]]
352	352
353	353
354	354	[[image:1657352645687-385.png]]
355	355
	388	+
356	356	(((
357	357	To save battery life, N95S31B will establish a subscription before each uplink and close the subscription 3 seconds after uplink successful. Any downlink commands from server will only arrive during the subscription period.
358	358	)))
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366	366
367	367	=== 2.2.8  Use TCP protocol to uplink data ===
368	368
	402	+
369	369	This feature is supported since firmware version v110
370	370
371	371	* (% style="color:blue" %)**AT+PRO=4   ** (%%) ~/~/ Set to use TCP protocol to uplink
372	372	* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5600   **(%%) ~/~/ to set TCP server address and port
373	373
	408	+
	409	+
374	374	[[image:1657352898400-901.png]]
375	375
376	376
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380	380
381	381	=== 2.2.9  Change Update Interval ===
382	382
	419	+
383	383	User can use below command to change the (% style="color:green" %)**uplink interval**.
384	384
385	385	* (% style="color:blue" %)**AT+TDC=600      ** (%%)~/~/ Set Update Interval to 600s
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394	394
395	395
396	396	(((
397		-NBSN95 has different working mode for the connections of different type of sensors. This section describes these modes. User can use the AT Command (% style="color:blue" %)**AT+MOD**(%%) to set NBSN95 to different working modes.
	434	+N95S31B has different working mode for the connections of different type of sensors. This section describes these modes. User can use the AT Command (% style="color:blue" %)**AT+MOD**(%%) to set NBSN95 to different working modes.
398	398	)))
399	399
400	400
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403	403	)))
404	404
405	405	(((
406		- (% style="color:blue" %)**AT+CFGMOD=2 ** (%%)~/~/will set the NBSN95 to work in MOD=2 distance mode which target to measure distance via Ultrasonic Sensor.
	443	+ (% style="color:blue" %)**AT+CFGMOD=2 ** (%%)~/~/will set the N95S31B to work in MOD=2 distance mode which target to measure distance via Ultrasonic Sensor.
407	407	)))
408	408
409	409
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426	426
427	427	(% style="color:red" %)
428	428	1. (((
429		-All modes share the same Payload Explanation from [[HERE>>||anchor="H2.3A0UplinkPayload"]].
	466	+**All modes share the same Payload Explanation from [[HERE>>||anchor="H2.3A0UplinkPayload"]].**
430	430	)))
431	431	1. (((
432		-By default, the device will send an uplink message every 1 hour.
433		-)))
	469	+**By default, the device will send an uplink message every 1 hour.**
434	434
435	435
436	436
	473	+
	474	+)))
	475	+
437	437	=== 2.3.1  Payload Analyze ===
438	438
	478	+
439	439	N95S31B uplink payload includes in total 21 bytes
440	440
441	441
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470	470	)))
471	471
472	472	(((
	513	+
	514	+
473	473	(((
474	474	If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NB sensor uplink data.
475	475	)))
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502	502
503	503	=== 2.3.2  Device ID ===
504	504
	547	+
505	505	(((
506	506	By default, the Device ID equal to the last 6 bytes of IMEI.
507	507	)))
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554	554
555	555	=== 2.3.4  Battery Info ===
556	556
	600	+
557	557	(((
558	558	Ex1: 0x0B45 = 2885mV
559	559	)))
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566	566
567	567	=== 2.3.5  Signal Strength ===
568	568
	613	+
569	569	(((
570	570	NB-IoT Network signal Strength.
571	571	)))
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598	598
599	599	=== 2.3.6  Temperature & Humidity ===
600	600
	646	+
601	601	The device will be able to get the SHT31 temperature and humidity data now and upload to IoT Server.
602	602
603	603	[[image:image-20220709161741-3.png]]
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616	616
617	617	== 2.4  Downlink Payload ==
618	618
619		-By default, NDDS75 prints the downlink payload to console port.
620	620
	666	+By default, N95S31B prints the downlink payload to console port.
	667	+
621	621	[[image:image-20220709100028-1.png]]
622	622
623	623
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654	654	)))
655	655
656	656	(((
657		-If payload = 0x04FF, it will reset the NDDS75
	704	+If payload = 0x04FF, it will reset the N95S31B
658	658	)))
659	659
660	660
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668	668
669	669	== 2.5  ​Battery Analysis ==
670	670
	718	+
671	671	=== 2.5.1  ​Battery Type ===
672	672
673	673
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695	695
696	696	=== 2.5.2  Power consumption Analyze ===
697	697
	746	+
698	698	(((
699		-The file **DRAGINO_N95S31B-Power-Analyzer.pdf** from [[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/N95S31B/>>url:https://www.dragino.com/downloads/index.php?dir=NB-IoT/N95S31B/]] describes a detail measurement to analyze the power consumption in different case. User can use it for design guideline for their project.
	748	+The file **DRAGINO_N95S31B-Power-Analyzer.pdf** from [[https:~~/~~/www.dropbox.com/sh/mlpd6l05bogvaf6/AABwAJLMttqG7i~~-~~-AyZcQkoua?dl=0>>https://www.dropbox.com/sh/mlpd6l05bogvaf6/AABwAJLMttqG7i--AyZcQkoua?dl=0]] describes a detail measurement to analyze the power consumption in different case. User can use it for design guideline for their project.
700	700	)))
701	701
702	702	(((
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706	706
707	707	=== 2.5.3  ​Battery Note ===
708	708
	758	+
709	709	(((
710	710	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 uplink data, then the battery life may be decreased.
711	711	)))
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728	728
729	729	= 3. ​ Access NB-IoT Module =
730	730
	781	+
731	731	(((
732	732	Users can directly access the AT command set of the NB-IoT module.
733	733	)))
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734	734
735	735	(((
736	736	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/]]
	788	+
	789	+
737	737	)))
738	738
739	739	[[image:1657333200519-600.png]]
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742	742
743	743	= 4.  Using the AT Commands =
744	744
	798	+
745	745	== 4.1  Access AT Commands ==
746	746
747		-See NBSN95 AT Command in this link for detail:  [[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/NBSN95/>>url:https://www.dragino.com/downloads/index.php?dir=NB-IoT/NBSN95/]]
748	748
	802	+See NBSN95 AT Command in this link for detail:  [[https:~~/~~/www.dropbox.com/sh/jao1xt9kw5r3yq4/AAAMpJkZzExF2JLbRWxGoQ9Na?dl=0>>https://www.dropbox.com/sh/jao1xt9kw5r3yq4/AAAMpJkZzExF2JLbRWxGoQ9Na?dl=0]]
749	749
	804	+
750	750	AT+<CMD>?  : Help on <CMD>
751	751
752	752	AT+<CMD>         : Run <CMD>
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820	820
821	821	= ​5.  FAQ =
822	822
	878	+
823	823	== 5.1 ​ How to Upgrade Firmware ==
824	824
825	825
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835	835
836	836
837	837	(((
838		-(% style="color:red" %)Notice, N95S31B and LSN50v2 share the same mother board. They use the same connection and method to update.
	894	+(% style="color:red" %)**Notice, N95S31B and LSN50v2 share the same mother board. They use the same connection and method to update.**
839	839	)))
840	840	)))
841	841
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843	843
844	844	= 6.  Trouble Shooting =
845	845
	902	+
846	846	== 6.1  ​Connection problem when uploading firmware ==
847	847
848	848
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858	858
859	859	== 6.2  AT Command input doesn't work ==
860	860
	918	+
861	861	(((
862	862	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.
863	863
...	...	@@ -907,5 +907,9 @@
907	907
908	908	= 9.  Support =
909	909
	968	+
910	910	* 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.
911	911	* 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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	972	+
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