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30		-
31	31	The NDDS75 can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc. It detects the distance between the measured object and the sensor, and uploads the value via wireless to IoT Server via NB-IoT Network.
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35		-
36	36	NarrowBand-Internet of Things (NB-IoT) is a standards-based low power wide area (LPWA) technology developed to enable a wide range of new IoT devices and services. NB-IoT significantly improves the power consumption of user devices, system capacity and spectrum efficiency, especially in deep coverage.
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41	41	NDDS75 supports different uplink methods include (% style="color:blue" %)**TCP, MQTT, UDP and CoAP** (%%)for different application requirement.
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43	43
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45		-
46	46	NDDS75 is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), It is designed for long term use up to 5 years. (Actually Battery life depends on the use environment, update period & uplink method)
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48	48
49	49	(((
50		-
51	51	To use NDDS75, user needs to check if there is NB-IoT coverage in local area and with the bands NDDS75 supports. If the local operate support it, user needs to get a NB-IoT SIM card from local operator and install NDDS75 to get NB-IoT network connection.
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76	76	* 8500mAh Battery for long term use
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78	78
	74	+
79	79	== 1.3  Specification ==
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81	81
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107	107	* Max transmit power: 350mA@3.3v
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109	109
	106	+
110	110	== ​1.4  Applications ==
111	111
	109	+
112	112	* Smart Buildings & Home Automation
113	113	* Logistics and Supply Chain Management
114	114	* Smart Metering
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131	131
132	132	== 2.1  How it works ==
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	132	+
134	134	(((
135	135	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.
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156	156
157	157	=== 2.2.1 Test Requirement ===
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159	159	(((
160	160	To use NDDS75 in your city, make sure meet below requirements:
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162	162
163	163	* Your local operator has already distributed a NB-IoT Network there.
164		-* The local NB-IoT network used the band that NSE01 supports.
	164	+* The local NB-IoT network used the band that NDDS75 supports.
165	165	* Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
166	166
167	167	(((
168		-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
	168	+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.
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175	175
176	176	=== 2.2.2 Insert SIM card ===
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179	179	Insert the NB-IoT Card get from your provider.
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190	190
191	191	=== 2.2.3 Connect USB – TTL to NDDS75 to configure it ===
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195	195	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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229	229
230	230	=== 2.2.4 Use CoAP protocol to uplink data ===
231	231
232		-(% 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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	235	+(% 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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	237	+
235	235	(((
236	236	**Use below commands:**
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313	313
314	314	=== 2.2.8 Change Update Interval ===
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316	316	User can use below command to change the (% style="color:green" %)**uplink interval**.
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318	318	* (% style="color:blue" %)**AT+TDC=600      ** (%%)~/~/ Set Update Interval to 600s
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324	324	(((
325		-(% style="color:red" %)1. By default, the device will send an uplink message every 1 hour.
	329	+(% style="color:red" %)**1. By default, the device will send an uplink message every 1 hour.**
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329	329
330	330	== 2.3  Uplink Payload ==
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332	332	In this mode, uplink payload includes in total 14 bytes
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334	334
335		-(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
	340	+(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:440px" %)
336	336	|=(% style="width: 60px;" %)(((
337	337	**Size(bytes)**
338		-)))|=(% style="width: 60px;" %)**6**|=(% style="width: 35px;" %)2|=(% style="width: 35px;" %)**2**|=(% style="width: 80px;" %)**1**|=(% style="width: 80px;" %)**2**|=(% style="width: 60px;" %)**1**
	343	+)))|=(% style="width: 60px;" %)**6**|=(% style="width: 35px;" %)2|=(% style="width: 35px;" %)**2**|=(% style="width: 80px;" %)**1**|=(% style="width: 100px;" %)**2**|=(% style="width: 60px;" %)**1**
339	339	|(% style="width:97px" %)**Value**|(% style="width:83px" %)[[Device ID>>||anchor="H2.4.1A0A0DeviceID"]]|(% style="width:41px" %)[[Ver>>||anchor="H2.4.2A0VersionInfo"]]|(% style="width:46px" %)[[BAT>>||anchor="H2.4.3A0BatteryInfo"]]|(% style="width:123px" %)[[Signal Strength>>||anchor="H2.4.4A0SignalStrength"]]|(% style="width:120px" %)[[Distance (unit: mm)>>||anchor="H2.4.5A0Distance"]]|(% style="width:80px" %)[[Interrupt>>||anchor="H2.4.6A0DigitalInterrupt"]]
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382	382
383	383	=== 2.4.1  Device ID ===
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386	386	By default, the Device ID equal to the last 6 bytes of IMEI.
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406	406
407	407	=== 2.4.2  Version Info ===
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410	410	Specify the software version: 0x64=100, means firmware version 1.00.
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418	418
419	419	=== 2.4.3  Battery Info ===
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422	422	Ex1: 0x0B45 = 2885mV
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430	430
431	431	=== 2.4.4  Signal Strength ===
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434	434	NB-IoT Network signal Strength.
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462	462
463	463	=== 2.4.5  Distance ===
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465	465	Get the distance. Flat object range 280mm - 7500mm.
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	477	+(((
467	467	For example, if the data you get from the register is **__0x0B 0x05__**, the distance between the sensor and the measured object is
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482	482
483	483	=== 2.4.6  Digital Interrupt ===
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485	485	(((
486	486	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.
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516	516
517	517	=== 2.4.7  ​+5V Output ===
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519	519	(((
520	520	NDDS75 will enable +5V output before all sampling and disable the +5v after all sampling.
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537	537
538	538	== 2.5  Downlink Payload ==
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540	540	By default, NDDS75 prints the downlink payload to console port.
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542	542	[[image:image-20220709100028-1.png]]
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607	607	== 2.7  ​Firmware Change Log ==
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	625	+(((
610	610	Download URL & Firmware Change log
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612	612	(((
613	613	[[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/]]
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	634	+(((
617	617	Upgrade Instruction: [[Upgrade_Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
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647	647
648	648	=== 2.8.2  Power consumption Analyze ===
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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.
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685	685
686	686	=== 2.8.3  ​Battery Note ===
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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.
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693	693
694	694	=== 2.8.4  Replace the battery ===
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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).
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701	701
702	702	= 3. ​ Access NB-IoT Module =
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705	705	Users can directly access the AT command set of the NB-IoT module.
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717	717
718	718	== 4.1  Access AT Commands ==
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720	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/]]
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807	807	(((
808		-(% style="color:red" %)Notice, NDDS75 and LDDS75 share the same mother board. They use the same connection and method to update.
	832	+(% style="color:red" %)**Notice, NDDS75 and LDDS75 share the same mother board. They use the same connection and method to update.**
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827	827
828	828	== 6.2  AT Command input doesn't work ==
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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.
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852	852
853	853	(% style="color:#037691" %)**Package Includes**:
854	854
855		-* NSE01 NB-IoT Distance Detect Sensor Node x 1
	880	+* NDDS75 NB-IoT Distance Detect Sensor Node x 1
856	856	* External antenna x 1
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858	858
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861	861
862	862	(% style="color:#037691" %)**Dimension and weight**:
863	863
864		-
865	865	* Device Size: 13.0 x 5 x 4.5 cm
866	866	* Device Weight: 150g
867	867	* Package Size / pcs : 15 x 12x 5.5 cm
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877	877
878	878	= 9.  Support =
879	879
	904	+
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]]