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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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67	67	* 8500mAh Battery for long term use
68	68
69	69
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	73	+
70	70	== 1.3  Specification ==
71	71
72	72
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75	75	* Supply Voltage: 2.1v ~~ 3.6v
76	76	* Operating Temperature: -40 ~~ 85°C
77	77
	82	+
	83	+
78	78	(% style="color:#037691" %)**NB-IoT Spec:**
79	79
80	80	* - B1 @H-FDD: 2100MHz
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84	84	* - B20 @H-FDD: 800MHz
85	85	* - B28 @H-FDD: 700MHz
86	86
	93	+
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87	87	(% style="color:#037691" %)**Battery:**
88	88
89	89	* Li/SOCI2 un-chargeable battery
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93	93	* Max boost current: 2A, 1 second
94	94
95	95
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	105	+
96	96	== ​1.4  Applications ==
97	97
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98	98	* Smart Buildings & Home Automation
99	99	* Logistics and Supply Chain Management
100	100	* Smart Metering
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106	106	​
107	107
108	108
	120	+
109	109	== 1.5  Pin Definitions & Switch ==
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111	111	N95S31B use the mother board from NBSN95 which as below.
112	112
	126	+
113	113	[[image:image-20220709144723-1.png]]
114	114
115	115
	130	+
116	116	=== 1.5.1 Jumper JP2 ===
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118	118	Power on Device when put this jumper.
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120	120
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121	121
122	122	=== 1.5.2 BOOT MODE / SW1 ===
123	123
	140	+
124	124	(((
125	125	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.
126	126	)))
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133	133
134	134	=== 1.5.3 Reset Button ===
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136	136	Press to reboot the device.
137	137
138	138
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139	139
140	140	=== 1.5.4 LED ===
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142	142	It will flash:
143	143
144	144	1. When boot the device in flash mode
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145	145	1. Send an uplink packet
146	146
147	147
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	168	+
148	148	= 2.  Use N95S31B to communicate with IoT Server =
149	149
	171	+
150	150	== 2.1  How it works ==
151	151
152	152
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163	163
164	164	)))
165	165
166		-[[image:1657350248151-650.png]]
	188	+[[image:1657520100595-569.png]]
167	167
168	168	(((
169	169
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179	179	[[image:image-20220709150546-2.png]]
180	180
181	181
	204	+
182	182	=== 2.2.1 Test Requirement ===
183	183
184	184
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231	231
232	232	=== 2.2.3  Insert SIM card ===
233	233
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234	234	(((
235	235	Insert the NB-IoT Card get from your provider.
236	236	)))
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246	246
247	247	=== 2.2.4  Connect USB – TTL to N95S31B to configure it ===
248	248
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249	249	(((
250	250	(((
251	251	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.
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252	252	)))
253	253	)))
254	254
255	255	[[image:1657351312545-300.png]]
256	256
	284	+
257	257	**Connection:**
258	258
259	259	(% style="background-color:yellow" %)USB TTL GND <~-~-~-~-> GND
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277	277
278	278	[[image:1657329814315-101.png]]
279	279
	308	+
280	280	(((
281		-(% 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]]**
282	282	)))
283	283
284	284
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285	285
286	286	=== 2.2.5  Use CoAP protocol to uplink data ===
287	287
288		-(% 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/]]
289	289
	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/]]**
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291	291	(((
292	292	**Use below commands:**
293	293	)))
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326	326	* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5601   ** (%%) ~/~/ to set UDP server address and port
327	327	* (% style="color:blue" %)**AT+CFM=1       ** (%%) ~/~/ If the server does not respond, this command is unnecessary
328	328
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329	329	[[image:1657352391268-297.png]]
330	330
331	331
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335	335
336	336	=== 2.2.7  Use MQTT protocol to uplink data ===
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338	338	N95S31B supports only plain MQTT now it doesn't support TLS and other related encryption.
339	339
340	340	* (% style="color:blue" %)**AT+PRO=3   ** (%%) ~/~/Set to use MQTT protocol to uplink
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345	345	* (% style="color:blue" %)**AT+PUBTOPIC=f9527                               **(%%)~/~/Set the sending topic of MQTT
346	346	* (% style="color:blue" %)**AT+SUBTOPIC=Ns9527          **(%%) ~/~/Set the subscription topic of MQTT
347	347
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348	348	[[image:1657352634421-276.png]]
349	349
350	350
351	351	[[image:1657352645687-385.png]]
352	352
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353	353	(((
354	354	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.
355	355	)))
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363	363
364	364	=== 2.2.8  Use TCP protocol to uplink data ===
365	365
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366	366	This feature is supported since firmware version v110
367	367
368	368	* (% style="color:blue" %)**AT+PRO=4   ** (%%) ~/~/ Set to use TCP protocol to uplink
369	369	* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5600   **(%%) ~/~/ to set TCP server address and port
370	370
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371	371	[[image:1657352898400-901.png]]
372	372
373	373
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377	377
378	378	=== 2.2.9  Change Update Interval ===
379	379
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380	380	User can use below command to change the (% style="color:green" %)**uplink interval**.
381	381
382	382	* (% style="color:blue" %)**AT+TDC=600      ** (%%)~/~/ Set Update Interval to 600s
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391	391
392	392
393	393	(((
394		-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.
395	395	)))
396	396
397	397
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400	400	)))
401	401
402	402	(((
403		- (% 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.
404	404	)))
405	405
406	406
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423	423
424	424	(% style="color:red" %)
425	425	1. (((
426		-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"]].**
427	427	)))
428	428	1. (((
429		-By default, the device will send an uplink message every 1 hour.
430		-)))
	469	+**By default, the device will send an uplink message every 1 hour.**
431	431
432	432
	472	+
	473	+
	474	+)))
	475	+
433	433	=== 2.3.1  Payload Analyze ===
434	434
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435	435	N95S31B uplink payload includes in total 21 bytes
436	436
437	437
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466	466	)))
467	467
468	468	(((
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	514	+
469	469	(((
470	470	If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NB sensor uplink data.
471	471	)))
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498	498
499	499	=== 2.3.2  Device ID ===
500	500
	547	+
501	501	(((
502	502	By default, the Device ID equal to the last 6 bytes of IMEI.
503	503	)))
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522	522
523	523	=== 2.3.3  Version Info ===
524	524
	572	+
525	525	(((
526	526	These bytes include the hardware and software version.
527	527	)))
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549	549
550	550	=== 2.3.4  Battery Info ===
551	551
	600	+
552	552	(((
553	553	Ex1: 0x0B45 = 2885mV
554	554	)))
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561	561
562	562	=== 2.3.5  Signal Strength ===
563	563
	613	+
564	564	(((
565	565	NB-IoT Network signal Strength.
566	566	)))
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593	593
594	594	=== 2.3.6  Temperature & Humidity ===
595	595
	646	+
596	596	The device will be able to get the SHT31 temperature and humidity data now and upload to IoT Server.
597	597
598	598	[[image:image-20220709161741-3.png]]
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611	611
612	612	== 2.4  Downlink Payload ==
613	613
614		-By default, NDDS75 prints the downlink payload to console port.
615	615
	666	+By default, N95S31B prints the downlink payload to console port.
	667	+
616	616	[[image:image-20220709100028-1.png]]
617	617
618	618
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649	649	)))
650	650
651	651	(((
652		-If payload = 0x04FF, it will reset the NDDS75
	704	+If payload = 0x04FF, it will reset the N95S31B
653	653	)))
654	654
655	655
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663	663
664	664	== 2.5  ​Battery Analysis ==
665	665
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666	666	=== 2.5.1  ​Battery Type ===
667	667
668	668
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690	690
691	691	=== 2.5.2  Power consumption Analyze ===
692	692
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693	693	(((
694		-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.
695	695	)))
696	696
697	697	(((
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701	701
702	702	=== 2.5.3  ​Battery Note ===
703	703
	758	+
704	704	(((
705	705	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.
706	706	)))
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723	723
724	724	= 3. ​ Access NB-IoT Module =
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726	726	(((
727	727	Users can directly access the AT command set of the NB-IoT module.
728	728	)))
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729	729
730	730	(((
731	731	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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732	732	)))
733	733
734	734	[[image:1657333200519-600.png]]
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737	737
738	738	= 4.  Using the AT Commands =
739	739
	798	+
740	740	== 4.1  Access AT Commands ==
741	741
742		-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/]]
743	743
	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]]
744	744
	804	+
745	745	AT+<CMD>?  : Help on <CMD>
746	746
747	747	AT+<CMD>         : Run <CMD>
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815	815
816	816	= ​5.  FAQ =
817	817
	878	+
818	818	== 5.1 ​ How to Upgrade Firmware ==
819	819
820	820
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830	830
831	831
832	832	(((
833		-(% 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.**
834	834	)))
835	835	)))
836	836
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838	838
839	839	= 6.  Trouble Shooting =
840	840
	902	+
841	841	== 6.1  ​Connection problem when uploading firmware ==
842	842
843	843
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853	853
854	854	== 6.2  AT Command input doesn't work ==
855	855
	918	+
856	856	(((
857	857	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.
858	858
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902	902
903	903	= 9.  Support =
904	904
	968	+
905	905	* 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.
906	906	* 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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