Version 97.11 by Xiaoling on 2022/07/09 11:31

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Xiaoling 35.4 8 **Table of Contents:**
Xiaoling 1.1 9
Xiaoling 95.4 10 {{toc/}}
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Xiaoling 65.3 16
Xiaoling 44.2 17 = 1.  Introduction =
Xiaoling 1.1 18
Xiaoling 67.2 19 == 1.1 ​ What is NDDS75 Distance Detection Sensor ==
Xiaoling 1.1 20
Xiaoling 12.2 21 (((
Xiaoling 35.4 22
23
Xiaoling 65.9 24 (((
Xiaoling 68.2 25 The Dragino NDDS75 is a (% style="color:blue" %)**NB-IoT Distance Detection Sensor**(%%) for Internet of Things solution. It is designed to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses ultrasonic sensing technology for distance measurement, and temperature compensation is performed internally to improve the reliability of data.
26 \\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.
27 \\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.
28 \\NDDS75 supports different uplink methods include (% style="color:blue" %)**TCP, MQTT, UDP and CoAP** (%%)for different application requirement.
29 \\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)
30 \\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.
Xiaoling 65.9 31 )))
Xiaoling 4.2 32
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Xiaoling 12.2 34 )))
Xiaoling 4.2 35
Xiaoling 75.2 36 [[image:1657327959271-447.png]]
Xiaoling 4.2 37
38
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Xiaoling 65.3 40 == 1.2 ​ Features ==
Xiaoling 13.3 41
Xiaoling 75.3 42
Xiaoling 44.2 43 * NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
Xiaoling 75.3 44 * Ultra low power consumption
45 * Distance Detection by Ultrasonic technology
46 * Flat object range 280mm - 7500mm
47 * Accuracy: ±(1cm+S*0.3%) (S: Distance)
48 * Cable Length: 25cm
Xiaoling 4.2 49 * AT Commands to change parameters
50 * Uplink on periodically
51 * Downlink to change configure
52 * IP66 Waterproof Enclosure
Xiaoling 44.2 53 * Micro SIM card slot for NB-IoT SIM
54 * 8500mAh Battery for long term use
Xiaoling 4.2 55
Xiaoling 97.2 56
57
Xiaoling 44.2 58 == 1.3  Specification ==
59
60
61 (% style="color:#037691" %)**Common DC Characteristics:**
62
63 * Supply Voltage: 2.1v ~~ 3.6v
64 * Operating Temperature: -40 ~~ 85°C
65
66 (% style="color:#037691" %)**NB-IoT Spec:**
67
68 * - B1 @H-FDD: 2100MHz
69 * - B3 @H-FDD: 1800MHz
70 * - B8 @H-FDD: 900MHz
71 * - B5 @H-FDD: 850MHz
72 * - B20 @H-FDD: 800MHz
73 * - B28 @H-FDD: 700MHz
74
Xiaoling 75.3 75 (% style="color:#037691" %)**Battery:**
Xiaoling 4.2 76
Xiaoling 75.3 77 * Li/SOCI2 un-chargeable battery
78 * Capacity: 8500mAh
79 * Self Discharge: <1% / Year @ 25°C
80 * Max continuously current: 130mA
81 * Max boost current: 2A, 1 second
Xiaoling 14.2 82
Xiaoling 75.3 83 (% style="color:#037691" %)**Power Consumption**
Xiaoling 4.2 84
Xiaoling 75.3 85 * STOP Mode: 10uA @ 3.3v
Xiaoling 97.7 86 * Max transmit power: 350mA@3.3v
Xiaoling 75.3 87
Xiaoling 91.3 88
Xiaoling 97.2 89
Xiaoling 44.2 90 == ​1.4  Applications ==
Xiaoling 4.2 91
Xiaoling 75.4 92 * Smart Buildings & Home Automation
93 * Logistics and Supply Chain Management
94 * Smart Metering
Xiaoling 4.2 95 * Smart Agriculture
Xiaoling 75.4 96 * Smart Cities
97 * Smart Factory
Xiaoling 4.2 98
Xiaoling 15.6 99 (% class="wikigeneratedid" id="H200B1.5FirmwareChangelog" %)
100
Xiaoling 4.2 101
Xiaoling 75.4 102
Xiaoling 44.2 103 == 1.5  Pin Definitions ==
Xiaoling 15.6 104
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Xiaoling 76.2 106 [[image:1657328609906-564.png]]
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Xiaoling 14.3 108
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Xiaoling 81.2 110 = 2.  Use NDDS75 to communicate with IoT Server =
Xiaoling 14.3 111
Xiaoling 45.2 112 == 2.1  How it works ==
Xiaoling 14.3 113
Xiaoling 15.3 114 (((
Xiaoling 77.2 115 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.
Xiaoling 15.3 116 )))
Xiaoling 4.2 117
Xiaoling 45.2 118
Xiaoling 15.3 119 (((
Xiaoling 77.2 120 The diagram below shows the working flow in default firmware of NDDS75:
Xiaoling 15.3 121 )))
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Xiaoling 77.2 123 (((
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125 )))
Xiaoling 4.2 126
Xiaoling 77.2 127 [[image:1657328659945-416.png]]
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Xiaoling 45.2 129 (((
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131 )))
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Xiaoling 45.2 133
Xiaoling 81.2 134 == 2.2 ​ Configure the NDDS75 ==
Xiaoling 4.2 135
Xiaoling 48.2 136
Xiaoling 45.4 137 === 2.2.1 Test Requirement ===
Xiaoling 4.2 138
Xiaoling 65.10 139 (((
Xiaoling 81.2 140 To use NDDS75 in your city, make sure meet below requirements:
Xiaoling 65.10 141 )))
Xiaoling 4.2 142
Xiaoling 45.4 143 * Your local operator has already distributed a NB-IoT Network there.
144 * The local NB-IoT network used the band that NSE01 supports.
145 * Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
Xiaoling 4.2 146
Xiaoling 48.2 147 (((
Xiaoling 81.2 148 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
Xiaoling 48.2 149 )))
Xiaoling 4.2 150
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Xiaoling 81.2 152 [[image:1657328756309-230.png]]
Xiaoling 4.2 153
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Xiaoling 45.5 156 === 2.2.2 Insert SIM card ===
Xiaoling 4.2 157
Xiaoling 65.11 158 (((
Xiaoling 45.4 159 Insert the NB-IoT Card get from your provider.
Xiaoling 65.11 160 )))
Xiaoling 4.2 161
Xiaoling 65.11 162 (((
Xiaoling 45.4 163 User need to take out the NB-IoT module and insert the SIM card like below:
Xiaoling 65.11 164 )))
Xiaoling 4.2 165
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Xiaoling 81.2 167 [[image:1657328884227-504.png]]
Xiaoling 4.2 168
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Xiaoling 48.2 170
Xiaoling 81.2 171 === 2.2.3 Connect USB – TTL to NDDS75 to configure it ===
Xiaoling 4.2 172
Xiaoling 48.2 173 (((
174 (((
Xiaoling 81.2 175 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.
Xiaoling 48.2 176 )))
177 )))
Xiaoling 19.2 178
Xiaoling 81.2 179 [[image:image-20220709092052-2.png]]
Xiaoling 4.2 180
Xiaoling 48.2 181 **Connection:**
Xiaoling 4.2 182
Xiaoling 45.6 183 (% style="background-color:yellow" %)USB TTL GND <~-~-~-~-> GND
Xiaoling 4.2 184
Xiaoling 45.6 185 (% style="background-color:yellow" %)USB TTL TXD <~-~-~-~-> UART_RXD
Xiaoling 4.2 186
Xiaoling 45.6 187 (% style="background-color:yellow" %)USB TTL RXD <~-~-~-~-> UART_TXD
Xiaoling 4.2 188
189
Xiaoling 45.4 190 In the PC, use below serial tool settings:
191
Xiaoling 57.4 192 * Baud:  (% style="color:green" %)**9600**
Xiaoling 48.2 193 * Data bits:** (% style="color:green" %)8(%%)**
194 * Stop bits: (% style="color:green" %)**1**
Xiaoling 57.4 195 * Parity:  (% style="color:green" %)**None**
Xiaoling 48.2 196 * Flow Control: (% style="color:green" %)**None**
Xiaoling 45.4 197
Xiaoling 48.2 198 (((
Xiaoling 81.2 199 Make sure the switch is in FLASH position, then power on device by connecting the jumper on NDDS75. NDDS75 will output system info once power on as below, we can enter the (% style="color:green" %)**password: 12345678**(%%) to access AT Command input.
Xiaoling 48.2 200 )))
Xiaoling 45.4 201
Xiaoling 81.2 202 [[image:1657329814315-101.png]]
Xiaoling 45.4 203
Xiaoling 65.12 204 (((
Xiaoling 81.2 205 (% 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/]]
Xiaoling 65.12 206 )))
Xiaoling 45.4 207
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Xiaoling 48.2 210 === 2.2.4 Use CoAP protocol to uplink data ===
Xiaoling 45.4 211
Xiaoling 56.2 212 (% 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/]]
Xiaoling 45.4 213
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Xiaoling 97.9 215 (((
Xiaoling 50.2 216 **Use below commands:**
Xiaoling 97.9 217 )))
Xiaoling 45.4 218
Xiaoling 97.9 219 * (((
220 (% style="color:blue" %)**AT+PRO=1**  (%%) ~/~/ Set to use CoAP protocol to uplink
221 )))
222 * (((
223 (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5683   ** (%%)~/~/ to set CoAP server address and port
224 )))
225 * (((
226 (% style="color:blue" %)**AT+URI=5,11,"mqtt",11,"coap",12,"0",15,"c=text1",23,"0" ** (%%) ~/~/Set COAP resource path
227 )))
Xiaoling 45.4 228
Xiaoling 97.9 229 (((
Xiaoling 45.4 230 For parameter description, please refer to AT command set
Xiaoling 97.9 231 )))
Xiaoling 45.4 232
Xiaoling 86.2 233 [[image:1657330452568-615.png]]
Xiaoling 45.4 234
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Xiaoling 97.10 236 (((
Xiaoling 86.2 237 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.
Xiaoling 97.10 238 )))
Xiaoling 45.4 239
Xiaoling 86.2 240 [[image:1657330472797-498.png]]
Xiaoling 45.4 241
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Xiaoling 50.2 243
Xiaoling 45.6 244 === 2.2.5 Use UDP protocol to uplink data(Default protocol) ===
Xiaoling 45.4 245
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Xiaoling 97.5 247 * (% style="color:blue" %)**AT+PRO=2   ** (%%) ~/~/ Set to use UDP protocol to uplink
Xiaoling 48.2 248 * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5601   ** (%%) ~/~/ to set UDP server address and port
Xiaoling 97.5 249 * (% style="color:blue" %)**AT+CFM=1       ** (%%) ~/~/ If the server does not respond, this command is unnecessary
Xiaoling 45.4 250
Xiaoling 86.2 251 [[image:1657330501006-241.png]]
Xiaoling 45.4 252
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Xiaoling 86.2 254 [[image:1657330533775-472.png]]
Xiaoling 45.4 255
Xiaoling 52.3 256
Xiaoling 86.2 257
Xiaoling 45.7 258 === 2.2.6 Use MQTT protocol to uplink data ===
Xiaoling 45.4 259
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Xiaoling 97.11 261 * (% style="color:blue" %)**AT+PRO=3   ** (%%) ~/~/Set to use MQTT protocol to uplink
262 * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,1883   ** (%%) ~/~/Set MQTT server address and port
263 * (% style="color:blue" %)**AT+CLIENT=CLIENT       ** (%%)~/~/Set up the CLIENT of MQTT
264 * (% style="color:blue" %)**AT+UNAME=UNAME  **(%%)~/~/Set the username of MQTT
265 * (% style="color:blue" %)**AT+PWD=PWD  **(%%)~/~/Set the password of MQTT
Xiaoling 89.2 266 * (% style="color:blue" %)**AT+PUBTOPIC=NDDS75_PUB                 **(%%)~/~/Set the sending topic of MQTT
267 * (% style="color:blue" %)**AT+SUBTOPIC=NDDS75_SUB          **(%%) ~/~/Set the subscription topic of MQTT
Xiaoling 45.4 268
Xiaoling 54.2 269 [[image:1657249978444-674.png]]
Xiaoling 45.4 270
Xiaoling 54.2 271
Xiaoling 89.2 272 [[image:1657330723006-866.png]]
Xiaoling 54.2 273
Xiaoling 45.4 274
Xiaoling 54.3 275 (((
Xiaoling 45.4 276 MQTT protocol has a much higher power consumption compare vs UDP / CoAP protocol. Please check the power analyze document and adjust the uplink period to a suitable interval.
Xiaoling 54.3 277 )))
Xiaoling 45.4 278
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Xiaoling 54.3 280
Xiaoling 45.7 281 === 2.2.7 Use TCP protocol to uplink data ===
Xiaoling 45.4 282
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Xiaoling 56.2 284 * (% style="color:blue" %)**AT+PRO=4   ** (%%) ~/~/ Set to use TCP protocol to uplink
Xiaoling 48.2 285 * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5600   **(%%) ~/~/ to set TCP server address and port
Xiaoling 45.4 286
Xiaoling 89.2 287 [[image:image-20220709093918-1.png]]
Xiaoling 45.4 288
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Xiaoling 89.2 290 [[image:image-20220709093918-2.png]]
Xiaoling 45.4 291
Xiaoling 57.6 292
Xiaoling 89.2 293
Xiaoling 45.7 294 === 2.2.8 Change Update Interval ===
Xiaoling 45.4 295
Xiaoling 48.2 296 User can use below command to change the (% style="color:green" %)**uplink interval**.
Xiaoling 45.4 297
Xiaoling 56.3 298 * (% style="color:blue" %)**AT+TDC=600      ** (%%)~/~/ Set Update Interval to 600s
Xiaoling 45.4 299
Xiaoling 56.3 300 (((
Xiaoling 48.2 301 (% style="color:red" %)**NOTE:**
Xiaoling 56.3 302 )))
Xiaoling 45.4 303
Xiaoling 56.3 304 (((
Xiaoling 45.7 305 (% style="color:red" %)1. By default, the device will send an uplink message every 1 hour.
Xiaoling 56.3 306 )))
Xiaoling 45.4 307
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Xiaoling 57.2 310 == 2.3  Uplink Payload ==
Xiaoling 4.2 311
Xiaoling 90.2 312 In this mode, uplink payload includes in total 14 bytes
Xiaoling 32.9 313
Xiaoling 90.2 314
Xiaoling 57.2 315 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
Xiaoling 95.4 316 |=(% style="width: 80px;" %)(((
Xiaoling 57.2 317 **Size(bytes)**
Xiaoling 95.4 318 )))|=(% style="width: 80px;" %)**6**|=(% style="width: 35px;" %)2|=(% style="width: 35px;" %)**2**|=(% style="width: 110px;" %)**1**|=(% style="width: 110px;" %)**2**|=(% style="width: 70px;" %)**1**
Xiaoling 97.2 319 |(% 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"]]
Xiaoling 57.2 320
Xiaoling 65.13 321 (((
Xiaoling 90.2 322 If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NDDS751 uplink data.
Xiaoling 65.13 323 )))
Xiaoling 57.2 324
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Xiaoling 90.2 326 [[image:1657331036973-987.png]]
Xiaoling 57.2 327
Xiaoling 90.2 328 (((
Xiaoling 57.2 329 The payload is ASCII string, representative same HEX:
Xiaoling 90.2 330 )))
Xiaoling 57.2 331
Xiaoling 90.2 332 (((
333 0x72403155615900640c6c19029200 where:
334 )))
Xiaoling 57.2 335
Xiaoling 90.2 336 * (((
337 Device ID: 0x724031556159 = 724031556159
338 )))
339 * (((
340 Version: 0x0064=100=1.0.0
341 )))
Xiaoling 57.2 342
Xiaoling 90.2 343 * (((
344 BAT: 0x0c6c = 3180 mV = 3.180V
345 )))
346 * (((
347 Signal: 0x19 = 25
348 )))
349 * (((
350 Distance: 0x0292= 658 mm
351 )))
352 * (((
353 Interrupt: 0x00 = 0
Xiaoling 95.5 354
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Xiaoling 90.2 358 )))
Xiaoling 57.2 359
Xiaoling 57.3 360 == 2.4  Payload Explanation and Sensor Interface ==
Xiaoling 4.2 361
Xiaoling 57.7 362
Xiaoling 57.5 363 === 2.4.1  Device ID ===
Xiaoling 4.2 364
Xiaoling 65.13 365 (((
Xiaoling 57.3 366 By default, the Device ID equal to the last 6 bytes of IMEI.
Xiaoling 65.13 367 )))
Xiaoling 4.2 368
Xiaoling 65.13 369 (((
Xiaoling 57.4 370 User can use (% style="color:blue" %)**AT+DEUI**(%%) to set Device ID
Xiaoling 65.13 371 )))
Xiaoling 4.2 372
Xiaoling 65.13 373 (((
Xiaoling 57.3 374 **Example:**
Xiaoling 65.13 375 )))
Xiaoling 4.2 376
Xiaoling 65.13 377 (((
Xiaoling 57.3 378 AT+DEUI=A84041F15612
Xiaoling 65.13 379 )))
Xiaoling 4.2 380
Xiaoling 65.13 381 (((
Xiaoling 91.1 382 The Device ID is stored in a none-erase area, Upgrade the firmware or run **AT+FDR** won't erase Device ID.
Xiaoling 65.13 383 )))
Xiaoling 22.2 384
Xiaoling 4.2 385
386
Xiaoling 57.5 387 === 2.4.2  Version Info ===
388
Xiaoling 65.13 389 (((
Xiaoling 57.3 390 Specify the software version: 0x64=100, means firmware version 1.00.
Xiaoling 65.13 391 )))
Xiaoling 4.2 392
Xiaoling 65.13 393 (((
Xiaoling 91.1 394 For example: 0x00 64 : this device is NDDS75 with firmware version 1.0.0.
Xiaoling 65.13 395 )))
Xiaoling 4.2 396
397
Xiaoling 57.3 398
Xiaoling 57.5 399 === 2.4.3  Battery Info ===
Xiaoling 22.2 400
Xiaoling 32.10 401 (((
Xiaoling 4.2 402 Ex1: 0x0B45 = 2885mV
Xiaoling 32.10 403 )))
Xiaoling 4.2 404
Xiaoling 32.10 405 (((
Xiaoling 4.2 406 Ex2: 0x0B49 = 2889mV
Xiaoling 32.10 407 )))
Xiaoling 4.2 408
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Xiaoling 57.6 411 === 2.4.4  Signal Strength ===
Xiaoling 4.2 412
Xiaoling 65.13 413 (((
Xiaoling 57.6 414 NB-IoT Network signal Strength.
Xiaoling 65.13 415 )))
Xiaoling 57.6 416
Xiaoling 65.13 417 (((
Xiaoling 57.6 418 **Ex1: 0x1d = 29**
Xiaoling 65.13 419 )))
Xiaoling 57.6 420
Xiaoling 65.13 421 (((
Xiaoling 57.6 422 (% style="color:blue" %)**0**(%%)  -113dBm or less
Xiaoling 65.13 423 )))
Xiaoling 57.6 424
Xiaoling 65.13 425 (((
Xiaoling 57.6 426 (% style="color:blue" %)**1**(%%)  -111dBm
Xiaoling 65.13 427 )))
Xiaoling 57.6 428
Xiaoling 65.13 429 (((
Xiaoling 57.6 430 (% style="color:blue" %)**2...30**(%%) -109dBm... -53dBm
Xiaoling 65.13 431 )))
Xiaoling 57.6 432
Xiaoling 65.13 433 (((
Xiaoling 57.6 434 (% style="color:blue" %)**31**  (%%) -51dBm or greater
Xiaoling 65.13 435 )))
Xiaoling 57.6 436
Xiaoling 65.13 437 (((
Xiaoling 57.6 438 (% style="color:blue" %)**99**   (%%) Not known or not detectable
Xiaoling 65.13 439 )))
Xiaoling 57.6 440
441
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Xiaoling 95.4 443 === 2.4.5  Distance ===
Xiaoling 57.6 444
Xiaoling 91.1 445 Get the distance. Flat object range 280mm - 7500mm.
Xiaoling 4.2 446
Xiaoling 91.1 447 For example, if the data you get from the register is **__0x0B 0x05__**, the distance between the sensor and the measured object is
Xiaoling 4.2 448
Xiaoling 32.10 449 (((
450 (((
Xiaoling 91.4 451 (% style="color:blue" %)** 0B05(H) = 2821(D) = 2821mm.**
Xiaoling 32.10 452 )))
Xiaoling 32.11 453 )))
Xiaoling 4.2 454
Xiaoling 32.11 455 (((
Xiaoling 23.2 456
457 )))
Xiaoling 4.2 458
Xiaoling 23.2 459 (((
460
461 )))
462
Xiaoling 91.1 463 === 2.4.6  Digital Interrupt ===
Xiaoling 23.2 464
Xiaoling 65.15 465 (((
Xiaoling 91.1 466 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.
Xiaoling 65.15 467 )))
Xiaoling 4.2 468
Xiaoling 65.15 469 (((
Xiaoling 57.6 470 The command is:
Xiaoling 65.15 471 )))
Xiaoling 4.2 472
Xiaoling 65.15 473 (((
Xiaoling 57.8 474 (% style="color:blue" %)**AT+INTMOD=3 **(%%) ~/~/(more info about INMOD please refer [[**AT Command Manual**>>url:https://www.dragino.com/downloads/downloads/NB-IoT/NBSN95/DRAGINO_NBSN95-NB_AT%20Commands_v1.1.0.pdf]])**.**
Xiaoling 65.15 475 )))
Xiaoling 4.2 476
477
Xiaoling 65.15 478 (((
Xiaoling 65.6 479 The lower four bits of this data field shows if this packet is generated by interrupt or not. Click here for the hardware and software set up.
Xiaoling 65.15 480 )))
Xiaoling 4.2 481
482
Xiaoling 65.15 483 (((
Xiaoling 57.6 484 Example:
Xiaoling 65.15 485 )))
Xiaoling 4.2 486
Xiaoling 65.15 487 (((
Xiaoling 57.6 488 0x(00): Normal uplink packet.
Xiaoling 65.15 489 )))
Xiaoling 4.2 490
Xiaoling 65.15 491 (((
Xiaoling 57.6 492 0x(01): Interrupt Uplink Packet.
Xiaoling 65.15 493 )))
Xiaoling 23.2 494
Xiaoling 4.2 495
496
Xiaoling 91.1 497 === 2.4.7  ​+5V Output ===
Xiaoling 4.2 498
Xiaoling 65.16 499 (((
Xiaoling 91.1 500 NDDS75 will enable +5V output before all sampling and disable the +5v after all sampling. 
Xiaoling 65.16 501 )))
Xiaoling 4.2 502
Xiaoling 57.6 503
Xiaoling 65.16 504 (((
Xiaoling 57.6 505 The 5V output time can be controlled by AT Command.
Xiaoling 65.16 506 )))
Xiaoling 57.6 507
Xiaoling 65.16 508 (((
Xiaoling 57.7 509 (% style="color:blue" %)**AT+5VT=1000**
Xiaoling 65.16 510 )))
Xiaoling 57.6 511
Xiaoling 65.16 512 (((
Xiaoling 57.6 513 Means set 5V valid time to have 1000ms. So the real 5V output will actually have 1000ms + sampling time for other sensors.
Xiaoling 65.16 514 )))
Xiaoling 57.6 515
516
517
Xiaoling 58.2 518 == 2.5  Downlink Payload ==
Xiaoling 4.2 519
Xiaoling 92.2 520 By default, NDDS75 prints the downlink payload to console port.
Xiaoling 4.2 521
Xiaoling 92.2 522 [[image:image-20220709100028-1.png]]
Xiaoling 4.2 523
524
Xiaoling 32.14 525 (((
Xiaoling 40.4 526 (% style="color:blue" %)**Examples:**
Xiaoling 32.14 527 )))
Xiaoling 4.2 528
Xiaoling 32.14 529 (((
530
531 )))
Xiaoling 4.2 532
Xiaoling 32.14 533 * (((
Xiaoling 40.4 534 (% style="color:blue" %)**Set TDC**
Xiaoling 32.14 535 )))
Xiaoling 4.2 536
Xiaoling 32.14 537 (((
Xiaoling 60.2 538 If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
Xiaoling 32.14 539 )))
Xiaoling 4.2 540
Xiaoling 32.14 541 (((
Xiaoling 4.2 542 Payload:    01 00 00 1E    TDC=30S
Xiaoling 32.14 543 )))
Xiaoling 4.2 544
Xiaoling 32.14 545 (((
Xiaoling 4.2 546 Payload:    01 00 00 3C    TDC=60S
Xiaoling 32.14 547 )))
Xiaoling 4.2 548
Xiaoling 32.14 549 (((
550
551 )))
Xiaoling 4.2 552
Xiaoling 32.14 553 * (((
Xiaoling 40.4 554 (% style="color:blue" %)**Reset**
Xiaoling 32.14 555 )))
Xiaoling 4.2 556
Xiaoling 32.14 557 (((
Xiaoling 92.2 558 If payload = 0x04FF, it will reset the NDDS75
Xiaoling 32.14 559 )))
Xiaoling 4.2 560
561
Xiaoling 60.2 562 * (% style="color:blue" %)**INTMOD**
Xiaoling 4.2 563
Xiaoling 65.17 564 (((
Xiaoling 60.2 565 Downlink Payload: 06000003, Set AT+INTMOD=3
Xiaoling 65.17 566 )))
Xiaoling 4.2 567
568
Xiaoling 26.2 569
Xiaoling 60.2 570 == 2.6  ​LED Indicator ==
Xiaoling 26.2 571
Xiaoling 4.2 572
Xiaoling 92.2 573 The NDDS75 has an internal LED which is to show the status of different state.
Xiaoling 4.2 574
Xiaoling 92.2 575
576 * When power on, NDDS75 will detect if sensor probe is connected, if probe detected, LED will blink four times. (no blinks in this step is no probe)
Xiaoling 60.2 577 * Then the LED will be on for 1 second means device is boot normally.
Xiaoling 92.2 578 * After NDDS75 join NB-IoT network. The LED will be ON for 3 seconds.
Xiaoling 60.2 579 * For each uplink probe, LED will be on for 500ms.
Xiaoling 92.2 580
581 (((
582
Xiaoling 32.15 583 )))
Xiaoling 4.2 584
585
586
Xiaoling 92.3 587 == 2.7  ​Firmware Change Log ==
Xiaoling 4.2 588
589
Xiaoling 92.3 590 Download URL & Firmware Change log
Xiaoling 4.2 591
Xiaoling 60.2 592 (((
Xiaoling 92.3 593 [[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/]]
Xiaoling 60.2 594 )))
Xiaoling 4.2 595
596
Xiaoling 65.6 597 Upgrade Instruction: [[Upgrade_Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
Xiaoling 28.5 598
Xiaoling 4.2 599
600
Xiaoling 95.2 601 == 2.8  ​Battery Analysis ==
Xiaoling 4.2 602
Xiaoling 95.2 603 === 2.8.1  ​Battery Type ===
Xiaoling 4.2 604
605
Xiaoling 65.18 606 (((
Xiaoling 95.2 607 The NDDS75 battery is a combination of an 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is none-rechargeable battery type with a low discharge rate (<2% per year). This type of battery is commonly used in IoT devices such as water meter.
Xiaoling 65.18 608 )))
Xiaoling 4.2 609
Xiaoling 65.18 610 (((
Xiaoling 62.3 611 The battery is designed to last for several years depends on the actually use environment and update interval. 
Xiaoling 65.18 612 )))
Xiaoling 4.2 613
Xiaoling 65.18 614 (((
Xiaoling 60.2 615 The battery related documents as below:
Xiaoling 65.18 616 )))
Xiaoling 4.2 617
Xiaoling 60.2 618 * [[Battery Dimension>>http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
Xiaoling 65.7 619 * [[Lithium-Thionyl Chloride Battery datasheet>>http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
Xiaoling 60.2 620 * [[Lithium-ion Battery-Capacitor datasheet>>http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
Xiaoling 4.2 621
Xiaoling 29.2 622 (((
Xiaoling 95.2 623 [[image:image-20220709101450-2.png]]
Xiaoling 29.2 624 )))
Xiaoling 4.2 625
626
Xiaoling 35.18 627
Xiaoling 95.2 628 === 2.8.2  Power consumption Analyze ===
Xiaoling 4.2 629
Xiaoling 62.3 630 (((
Xiaoling 60.2 631 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.
Xiaoling 62.3 632 )))
Xiaoling 4.2 633
634
Xiaoling 62.3 635 (((
Xiaoling 60.2 636 Instruction to use as below:
Xiaoling 62.3 637 )))
Xiaoling 4.2 638
Xiaoling 62.3 639 (((
640 (% style="color:blue" %)**Step 1:  **(%%)Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/]]
641 )))
Xiaoling 4.2 642
643
Xiaoling 62.3 644 (((
645 (% style="color:blue" %)**Step 2: **(%%) Open it and choose
646 )))
Xiaoling 4.2 647
Xiaoling 62.3 648 * (((
649 Product Model
650 )))
651 * (((
652 Uplink Interval
653 )))
654 * (((
655 Working Mode
656 )))
Xiaoling 4.2 657
Xiaoling 62.3 658 (((
Xiaoling 60.2 659 And the Life expectation in difference case will be shown on the right.
Xiaoling 62.3 660 )))
Xiaoling 4.2 661
Xiaoling 96.2 662 [[image:image-20220709110451-3.png]]
Xiaoling 4.2 663
664
Xiaoling 62.2 665
Xiaoling 95.2 666 === 2.8.3  ​Battery Note ===
Xiaoling 4.2 667
Xiaoling 31.6 668 (((
Xiaoling 4.2 669 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.
Xiaoling 31.3 670 )))
Xiaoling 4.2 671
672
673
Xiaoling 95.2 674 === 2.8.4  Replace the battery ===
Xiaoling 31.2 675
Xiaoling 62.2 676 (((
Xiaoling 95.2 677 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).
Xiaoling 62.2 678 )))
Xiaoling 4.2 679
680
681
Xiaoling 63.2 682 = 3. ​ Access NB-IoT Module =
Xiaoling 4.2 683
Xiaoling 63.2 684 (((
685 Users can directly access the AT command set of the NB-IoT module.
686 )))
687
688 (((
Xiaoling 64.2 689 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/]] 
Xiaoling 63.2 690 )))
691
Xiaoling 95.2 692 [[image:1657333200519-600.png]]
Xiaoling 63.2 693
694
695
Xiaoling 64.2 696 = 4.  Using the AT Commands =
Xiaoling 63.2 697
Xiaoling 64.2 698 == 4.1  Access AT Commands ==
Xiaoling 9.2 699
Xiaoling 95.2 700 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/]]
Xiaoling 11.4 701
Xiaoling 4.2 702
Xiaoling 64.2 703 AT+<CMD>?  : Help on <CMD>
Xiaoling 4.2 704
Xiaoling 64.2 705 AT+<CMD>         : Run <CMD>
Xiaoling 4.2 706
Xiaoling 64.2 707 AT+<CMD>=<value> : Set the value
Xiaoling 4.2 708
Xiaoling 64.2 709 AT+<CMD>=?  : Get the value
Xiaoling 4.2 710
711
Xiaoling 11.6 712 (% style="color:#037691" %)**General Commands**(%%)      
Xiaoling 4.2 713
Xiaoling 64.2 714 AT  : Attention       
Xiaoling 4.2 715
Xiaoling 64.2 716 AT?  : Short Help     
Xiaoling 4.2 717
Xiaoling 64.2 718 ATZ  : MCU Reset    
Xiaoling 4.2 719
Xiaoling 64.2 720 AT+TDC  : Application Data Transmission Interval
Xiaoling 4.2 721
Xiaoling 64.2 722 AT+CFG  : Print all configurations
Xiaoling 4.2 723
Xiaoling 64.2 724 AT+CFGMOD           : Working mode selection
Xiaoling 4.2 725
Xiaoling 64.2 726 AT+INTMOD            : Set the trigger interrupt mode
Xiaoling 4.2 727
Xiaoling 64.2 728 AT+5VT  : Set extend the time of 5V power  
Xiaoling 4.2 729
Xiaoling 64.2 730 AT+PRO  : Choose agreement
Xiaoling 4.2 731
Xiaoling 64.2 732 AT+WEIGRE  : Get weight or set weight to 0
Xiaoling 4.2 733
Xiaoling 64.2 734 AT+WEIGAP  : Get or Set the GapValue of weight
Xiaoling 4.2 735
Xiaoling 64.2 736 AT+RXDL  : Extend the sending and receiving time
Xiaoling 4.2 737
Xiaoling 64.2 738 AT+CNTFAC  : Get or set counting parameters
Xiaoling 4.2 739
Xiaoling 64.2 740 AT+SERVADDR  : Server Address
Xiaoling 4.2 741
742
Xiaoling 64.2 743 (% style="color:#037691" %)**COAP Management**      
Xiaoling 4.2 744
Xiaoling 64.2 745 AT+URI            : Resource parameters
Xiaoling 4.2 746
747
Xiaoling 64.2 748 (% style="color:#037691" %)**UDP Management**
Xiaoling 4.2 749
Xiaoling 64.2 750 AT+CFM          : Upload confirmation mode (only valid for UDP)
Xiaoling 4.2 751
752
Xiaoling 64.2 753 (% style="color:#037691" %)**MQTT Management**
Xiaoling 4.2 754
Xiaoling 64.2 755 AT+CLIENT               : Get or Set MQTT client
Xiaoling 4.2 756
Xiaoling 64.2 757 AT+UNAME  : Get or Set MQTT Username
Xiaoling 4.2 758
Xiaoling 64.2 759 AT+PWD                  : Get or Set MQTT password
Xiaoling 4.2 760
Xiaoling 64.2 761 AT+PUBTOPIC  : Get or Set MQTT publish topic
Xiaoling 4.2 762
Xiaoling 64.2 763 AT+SUBTOPIC  : Get or Set MQTT subscription topic
Xiaoling 4.2 764
765
Xiaoling 64.2 766 (% style="color:#037691" %)**Information**          
Xiaoling 4.2 767
Xiaoling 64.2 768 AT+FDR  : Factory Data Reset
Xiaoling 4.2 769
Xiaoling 64.2 770 AT+PWORD  : Serial Access Password
Xiaoling 4.2 771
772
773
Xiaoling 64.4 774 = ​5.  FAQ =
Xiaoling 4.2 775
Xiaoling 64.4 776 == 5.1 ​ How to Upgrade Firmware ==
Xiaoling 6.3 777
Xiaoling 4.2 778
Xiaoling 31.35 779 (((
Xiaoling 64.4 780 User can upgrade the firmware for 1) bug fix, 2) new feature release.
Xiaoling 31.35 781 )))
Xiaoling 4.2 782
Xiaoling 31.35 783 (((
Xiaoling 64.4 784 Please see this link for how to upgrade:  [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H2.HardwareUpgradeMethodSupportList>>http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H2.HardwareUpgradeMethodSupportList]]
Xiaoling 31.35 785 )))
Xiaoling 4.2 786
Xiaoling 31.35 787 (((
Xiaoling 95.2 788 (% style="color:red" %)Notice, NDDS75 and LDDS75 share the same mother board. They use the same connection and method to update.
Xiaoling 31.35 789 )))
Xiaoling 4.2 790
791
792
Xiaoling 64.5 793 = 6.  Trouble Shooting =
Xiaoling 4.2 794
Xiaoling 64.5 795 == 6.1  ​Connection problem when uploading firmware ==
Xiaoling 4.9 796
Xiaoling 4.2 797
Xiaoling 65.20 798 (((
799 **Please see: **[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H3.3Troubleshooting>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H3.3Troubleshooting]]
800 )))
801
Xiaoling 64.5 802 (% class="wikigeneratedid" %)
Xiaoling 31.29 803 (((
Xiaoling 65.20 804
Xiaoling 31.29 805 )))
Xiaoling 4.2 806
807
Xiaoling 64.5 808 == 6.2  AT Command input doesn't work ==
Xiaoling 4.2 809
Xiaoling 31.30 810 (((
Xiaoling 64.5 811 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.
Xiaoling 65.22 812
Xiaoling 65.23 813
Xiaoling 31.30 814 )))
Xiaoling 4.2 815
816
Xiaoling 64.5 817 = 7. ​ Order Info =
Xiaoling 4.2 818
819
Xiaoling 95.3 820 Part Number**:** (% style="color:#4f81bd" %)**NSDDS75**
Xiaoling 4.7 821
Xiaoling 4.2 822
Xiaoling 31.10 823 (% class="wikigeneratedid" %)
824 (((
825
826 )))
827
Xiaoling 65.2 828 = 8.  Packing Info =
Xiaoling 4.2 829
Xiaoling 4.3 830 (((
Xiaoling 31.39 831
832
Xiaoling 31.40 833 (% style="color:#037691" %)**Package Includes**:
Xiaoling 64.5 834
Xiaoling 95.3 835 * NSE01 NB-IoT Distance Detect Sensor Node x 1
Xiaoling 64.5 836 * External antenna x 1
Xiaoling 4.3 837 )))
Xiaoling 4.2 838
Xiaoling 4.3 839 (((
Xiaoling 31.40 840
841
842 (% style="color:#037691" %)**Dimension and weight**:
Xiaoling 4.2 843
Xiaoling 95.3 844
845 * Device Size: 13.0 x 5 x 4.5 cm
846 * Device Weight: 150g
847 * Package Size / pcs : 15 x 12x 5.5 cm
848 * Weight / pcs : 220g
Xiaoling 4.3 849 )))
Xiaoling 31.11 850
Xiaoling 64.5 851 (((
Xiaoling 31.11 852
Xiaoling 64.5 853
854
855
Xiaoling 4.3 856 )))
Xiaoling 4.2 857
Xiaoling 64.5 858 = 9.  Support =
Xiaoling 4.2 859
860 * 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.
861 * 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]]