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Xiaoling 35.4 8 **Table of Contents:**
Xiaoling 1.1 9
Xiaoling 95.4 10 {{toc/}}
Xiaoling 1.1 11
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Xiaoling 31.17 15
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
Xiaoling 42.2 33
Xiaoling 12.2 34 )))
Xiaoling 4.2 35
Xiaoling 12.2 36 [[image:1654503236291-817.png]]
Xiaoling 4.2 37
38
Xiaoling 75.2 39 [[image:1657327959271-447.png]]
Xiaoling 4.2 40
41
42
Xiaoling 65.3 43 == 1.2 ​ Features ==
Xiaoling 13.3 44
Xiaoling 75.3 45
Xiaoling 44.2 46 * NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
Xiaoling 75.3 47 * Ultra low power consumption
48 * Distance Detection by Ultrasonic technology
49 * Flat object range 280mm - 7500mm
50 * Accuracy: ±(1cm+S*0.3%) (S: Distance)
51 * Cable Length: 25cm
Xiaoling 4.2 52 * AT Commands to change parameters
53 * Uplink on periodically
54 * Downlink to change configure
55 * IP66 Waterproof Enclosure
Xiaoling 44.2 56 * Micro SIM card slot for NB-IoT SIM
57 * 8500mAh Battery for long term use
Xiaoling 4.2 58
Xiaoling 44.2 59 == 1.3  Specification ==
60
61
62 (% style="color:#037691" %)**Common DC Characteristics:**
63
64 * Supply Voltage: 2.1v ~~ 3.6v
65 * Operating Temperature: -40 ~~ 85°C
66
67 (% style="color:#037691" %)**NB-IoT Spec:**
68
69 * - B1 @H-FDD: 2100MHz
70 * - B3 @H-FDD: 1800MHz
71 * - B8 @H-FDD: 900MHz
72 * - B5 @H-FDD: 850MHz
73 * - B20 @H-FDD: 800MHz
74 * - B28 @H-FDD: 700MHz
75
Xiaoling 75.3 76 (% style="color:#037691" %)**Battery:**
Xiaoling 4.2 77
Xiaoling 75.3 78 * Li/SOCI2 un-chargeable battery
79 * Capacity: 8500mAh
80 * Self Discharge: <1% / Year @ 25°C
81 * Max continuously current: 130mA
82 * Max boost current: 2A, 1 second
Xiaoling 14.2 83
Xiaoling 75.3 84 (% style="color:#037691" %)**Power Consumption**
Xiaoling 4.2 85
Xiaoling 75.3 86 * STOP Mode: 10uA @ 3.3v
Xiaoling 91.3 87 * Max transmit power: [[350mA@3.3v>>mailto:350mA@3.3v]]
Xiaoling 75.3 88
Xiaoling 91.3 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
103
Xiaoling 44.2 104 == 1.5  Pin Definitions ==
Xiaoling 15.6 105
106
Xiaoling 76.2 107 [[image:1657328609906-564.png]]
Xiaoling 4.2 108
Xiaoling 14.3 109
110
Xiaoling 81.2 111 = 2.  Use NDDS75 to communicate with IoT Server =
Xiaoling 14.3 112
Xiaoling 45.2 113 == 2.1  How it works ==
Xiaoling 14.3 114
Xiaoling 15.3 115 (((
Xiaoling 77.2 116 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 15.3 117 )))
Xiaoling 4.2 118
Xiaoling 45.2 119
Xiaoling 15.3 120 (((
Xiaoling 77.2 121 The diagram below shows the working flow in default firmware of NDDS75:
Xiaoling 15.3 122 )))
Xiaoling 4.2 123
Xiaoling 77.2 124 (((
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126 )))
Xiaoling 4.2 127
Xiaoling 77.2 128 [[image:1657328659945-416.png]]
129
Xiaoling 45.2 130 (((
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132 )))
Xiaoling 4.2 133
Xiaoling 45.2 134
Xiaoling 81.2 135 == 2.2 ​ Configure the NDDS75 ==
Xiaoling 4.2 136
Xiaoling 48.2 137
Xiaoling 45.4 138 === 2.2.1 Test Requirement ===
Xiaoling 4.2 139
Xiaoling 65.10 140 (((
Xiaoling 81.2 141 To use NDDS75 in your city, make sure meet below requirements:
Xiaoling 65.10 142 )))
Xiaoling 4.2 143
Xiaoling 45.4 144 * Your local operator has already distributed a NB-IoT Network there.
145 * The local NB-IoT network used the band that NSE01 supports.
146 * Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
Xiaoling 4.2 147
Xiaoling 48.2 148 (((
Xiaoling 81.2 149 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 48.2 150 )))
Xiaoling 4.2 151
152
Xiaoling 81.2 153 [[image:1657328756309-230.png]]
Xiaoling 4.2 154
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156
Xiaoling 45.5 157 === 2.2.2 Insert SIM card ===
Xiaoling 4.2 158
Xiaoling 65.11 159 (((
Xiaoling 45.4 160 Insert the NB-IoT Card get from your provider.
Xiaoling 65.11 161 )))
Xiaoling 4.2 162
Xiaoling 65.11 163 (((
Xiaoling 45.4 164 User need to take out the NB-IoT module and insert the SIM card like below:
Xiaoling 65.11 165 )))
Xiaoling 4.2 166
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Xiaoling 81.2 168 [[image:1657328884227-504.png]]
Xiaoling 4.2 169
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Xiaoling 48.2 171
Xiaoling 81.2 172 === 2.2.3 Connect USB – TTL to NDDS75 to configure it ===
Xiaoling 4.2 173
Xiaoling 48.2 174 (((
175 (((
Xiaoling 81.2 176 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 48.2 177 )))
178 )))
Xiaoling 19.2 179
Xiaoling 81.2 180 [[image:image-20220709092052-2.png]]
Xiaoling 4.2 181
Xiaoling 48.2 182 **Connection:**
Xiaoling 4.2 183
Xiaoling 45.6 184 (% style="background-color:yellow" %)USB TTL GND <~-~-~-~-> GND
Xiaoling 4.2 185
Xiaoling 45.6 186 (% style="background-color:yellow" %)USB TTL TXD <~-~-~-~-> UART_RXD
Xiaoling 4.2 187
Xiaoling 45.6 188 (% style="background-color:yellow" %)USB TTL RXD <~-~-~-~-> UART_TXD
Xiaoling 4.2 189
190
Xiaoling 45.4 191 In the PC, use below serial tool settings:
192
Xiaoling 57.4 193 * Baud:  (% style="color:green" %)**9600**
Xiaoling 48.2 194 * Data bits:** (% style="color:green" %)8(%%)**
195 * Stop bits: (% style="color:green" %)**1**
Xiaoling 57.4 196 * Parity:  (% style="color:green" %)**None**
Xiaoling 48.2 197 * Flow Control: (% style="color:green" %)**None**
Xiaoling 45.4 198
Xiaoling 48.2 199 (((
Xiaoling 81.2 200 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 48.2 201 )))
Xiaoling 45.4 202
Xiaoling 81.2 203 [[image:1657329814315-101.png]]
Xiaoling 45.4 204
Xiaoling 65.12 205 (((
Xiaoling 81.2 206 (% 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 65.12 207 )))
Xiaoling 45.4 208
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Xiaoling 48.2 211 === 2.2.4 Use CoAP protocol to uplink data ===
Xiaoling 45.4 212
Xiaoling 56.2 213 (% 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 45.4 214
215
Xiaoling 50.2 216 **Use below commands:**
Xiaoling 45.4 217
Xiaoling 48.2 218 * (% style="color:blue" %)**AT+PRO=1**  (%%) ~/~/ Set to use CoAP protocol to uplink
219 * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5683   ** (%%)~/~/ to set CoAP server address and port
220 * (% style="color:blue" %)**AT+URI=5,11,"mqtt",11,"coap",12,"0",15,"c=text1",23,"0" ** (%%) ~/~/Set COAP resource path
Xiaoling 45.4 221
222 For parameter description, please refer to AT command set
223
Xiaoling 86.2 224 [[image:1657330452568-615.png]]
Xiaoling 45.4 225
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Xiaoling 86.2 227 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 45.4 228
Xiaoling 86.2 229 [[image:1657330472797-498.png]]
Xiaoling 45.4 230
231
Xiaoling 50.2 232
Xiaoling 45.6 233 === 2.2.5 Use UDP protocol to uplink data(Default protocol) ===
Xiaoling 45.4 234
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Xiaoling 48.2 236 * (% style="color:blue" %)**AT+PRO=2   ** (%%) ~/~/ Set to use UDP protocol to uplink
237 * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5601   ** (%%) ~/~/ to set UDP server address and port
238 * (% style="color:blue" %)**AT+CFM=1       ** (%%) ~/~/If the server does not respond, this command is unnecessary
Xiaoling 45.4 239
Xiaoling 86.2 240 [[image:1657330501006-241.png]]
Xiaoling 45.4 241
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Xiaoling 86.2 243 [[image:1657330533775-472.png]]
Xiaoling 45.4 244
Xiaoling 52.3 245
Xiaoling 86.2 246
Xiaoling 45.7 247 === 2.2.6 Use MQTT protocol to uplink data ===
Xiaoling 45.4 248
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Xiaoling 54.3 250 * (% style="color:blue" %)**AT+PRO=3   ** (%%) ~/~/Set to use MQTT protocol to uplink
251 * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,1883   ** (%%) ~/~/Set MQTT server address and port
252 * (% style="color:blue" %)**AT+CLIENT=CLIENT       ** (%%)~/~/Set up the CLIENT of MQTT
Xiaoling 57.2 253 * (% style="color:blue" %)**AT+UNAME=UNAME                               **(%%)~/~/Set the username of MQTT
254 * (% style="color:blue" %)**AT+PWD=PWD                                        **(%%)~/~/Set the password of MQTT
Xiaoling 89.2 255 * (% style="color:blue" %)**AT+PUBTOPIC=NDDS75_PUB                 **(%%)~/~/Set the sending topic of MQTT
256 * (% style="color:blue" %)**AT+SUBTOPIC=NDDS75_SUB          **(%%) ~/~/Set the subscription topic of MQTT
Xiaoling 45.4 257
Xiaoling 54.2 258 [[image:1657249978444-674.png]]
Xiaoling 45.4 259
Xiaoling 54.2 260
Xiaoling 89.2 261 [[image:1657330723006-866.png]]
Xiaoling 54.2 262
Xiaoling 45.4 263
Xiaoling 54.3 264 (((
Xiaoling 45.4 265 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 54.3 266 )))
Xiaoling 45.4 267
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Xiaoling 54.3 269
Xiaoling 45.7 270 === 2.2.7 Use TCP protocol to uplink data ===
Xiaoling 45.4 271
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Xiaoling 56.2 273 * (% style="color:blue" %)**AT+PRO=4   ** (%%) ~/~/ Set to use TCP protocol to uplink
Xiaoling 48.2 274 * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5600   **(%%) ~/~/ to set TCP server address and port
Xiaoling 45.4 275
Xiaoling 89.2 276 [[image:image-20220709093918-1.png]]
Xiaoling 45.4 277
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Xiaoling 89.2 279 [[image:image-20220709093918-2.png]]
Xiaoling 45.4 280
Xiaoling 57.6 281
Xiaoling 89.2 282
Xiaoling 45.7 283 === 2.2.8 Change Update Interval ===
Xiaoling 45.4 284
Xiaoling 48.2 285 User can use below command to change the (% style="color:green" %)**uplink interval**.
Xiaoling 45.4 286
Xiaoling 56.3 287 * (% style="color:blue" %)**AT+TDC=600      ** (%%)~/~/ Set Update Interval to 600s
Xiaoling 45.4 288
Xiaoling 56.3 289 (((
Xiaoling 48.2 290 (% style="color:red" %)**NOTE:**
Xiaoling 56.3 291 )))
Xiaoling 45.4 292
Xiaoling 56.3 293 (((
Xiaoling 45.7 294 (% style="color:red" %)1. By default, the device will send an uplink message every 1 hour.
Xiaoling 56.3 295 )))
Xiaoling 45.4 296
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Xiaoling 57.2 299 == 2.3  Uplink Payload ==
Xiaoling 4.2 300
Xiaoling 90.2 301 In this mode, uplink payload includes in total 14 bytes
Xiaoling 32.9 302
Xiaoling 90.2 303
Xiaoling 57.2 304 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
Xiaoling 95.4 305 |=(% style="width: 80px;" %)(((
Xiaoling 57.2 306 **Size(bytes)**
Xiaoling 95.4 307 )))|=(% style="width: 80px;" %)**6**|=(% style="width: 35px;" %)2|=(% style="width: 35px;" %)**2**|=(% style="width: 110px;" %)**1**|=(% style="width: 110px;" %)**2**|=(% style="width: 70px;" %)**1**
308 |(% 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="H2.4.8A0DigitalInterrupt"]]
Xiaoling 57.2 309
Xiaoling 65.13 310 (((
Xiaoling 90.2 311 If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NDDS751 uplink data.
Xiaoling 65.13 312 )))
Xiaoling 57.2 313
314
Xiaoling 90.2 315 [[image:1657331036973-987.png]]
Xiaoling 57.2 316
Xiaoling 90.2 317 (((
Xiaoling 57.2 318 The payload is ASCII string, representative same HEX:
Xiaoling 90.2 319 )))
Xiaoling 57.2 320
Xiaoling 90.2 321 (((
322 0x72403155615900640c6c19029200 where:
323 )))
Xiaoling 57.2 324
Xiaoling 90.2 325 * (((
326 Device ID: 0x724031556159 = 724031556159
327 )))
328 * (((
329 Version: 0x0064=100=1.0.0
330 )))
Xiaoling 57.2 331
Xiaoling 90.2 332 * (((
333 BAT: 0x0c6c = 3180 mV = 3.180V
334 )))
335 * (((
336 Signal: 0x19 = 25
337 )))
338 * (((
339 Distance: 0x0292= 658 mm
340 )))
341 * (((
342 Interrupt: 0x00 = 0
Xiaoling 95.5 343
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Xiaoling 90.2 347 )))
Xiaoling 57.2 348
Xiaoling 57.3 349 == 2.4  Payload Explanation and Sensor Interface ==
Xiaoling 4.2 350
Xiaoling 57.7 351
Xiaoling 57.5 352 === 2.4.1  Device ID ===
Xiaoling 4.2 353
Xiaoling 65.13 354 (((
Xiaoling 57.3 355 By default, the Device ID equal to the last 6 bytes of IMEI.
Xiaoling 65.13 356 )))
Xiaoling 4.2 357
Xiaoling 65.13 358 (((
Xiaoling 57.4 359 User can use (% style="color:blue" %)**AT+DEUI**(%%) to set Device ID
Xiaoling 65.13 360 )))
Xiaoling 4.2 361
Xiaoling 65.13 362 (((
Xiaoling 57.3 363 **Example:**
Xiaoling 65.13 364 )))
Xiaoling 4.2 365
Xiaoling 65.13 366 (((
Xiaoling 57.3 367 AT+DEUI=A84041F15612
Xiaoling 65.13 368 )))
Xiaoling 4.2 369
Xiaoling 65.13 370 (((
Xiaoling 91.1 371 The Device ID is stored in a none-erase area, Upgrade the firmware or run **AT+FDR** won't erase Device ID.
Xiaoling 65.13 372 )))
Xiaoling 22.2 373
Xiaoling 4.2 374
375
Xiaoling 57.5 376 === 2.4.2  Version Info ===
377
Xiaoling 65.13 378 (((
Xiaoling 57.3 379 Specify the software version: 0x64=100, means firmware version 1.00.
Xiaoling 65.13 380 )))
Xiaoling 4.2 381
Xiaoling 65.13 382 (((
Xiaoling 91.1 383 For example: 0x00 64 : this device is NDDS75 with firmware version 1.0.0.
Xiaoling 65.13 384 )))
Xiaoling 4.2 385
386
Xiaoling 57.3 387
Xiaoling 57.5 388 === 2.4.3  Battery Info ===
Xiaoling 22.2 389
Xiaoling 32.10 390 (((
Xiaoling 4.2 391 Check the battery voltage for LSE01.
Xiaoling 32.10 392 )))
Xiaoling 4.2 393
Xiaoling 32.10 394 (((
Xiaoling 4.2 395 Ex1: 0x0B45 = 2885mV
Xiaoling 32.10 396 )))
Xiaoling 4.2 397
Xiaoling 32.10 398 (((
Xiaoling 4.2 399 Ex2: 0x0B49 = 2889mV
Xiaoling 32.10 400 )))
Xiaoling 4.2 401
402
403
Xiaoling 57.6 404 === 2.4.4  Signal Strength ===
Xiaoling 4.2 405
Xiaoling 65.13 406 (((
Xiaoling 57.6 407 NB-IoT Network signal Strength.
Xiaoling 65.13 408 )))
Xiaoling 57.6 409
Xiaoling 65.13 410 (((
Xiaoling 57.6 411 **Ex1: 0x1d = 29**
Xiaoling 65.13 412 )))
Xiaoling 57.6 413
Xiaoling 65.13 414 (((
Xiaoling 57.6 415 (% style="color:blue" %)**0**(%%)  -113dBm or less
Xiaoling 65.13 416 )))
Xiaoling 57.6 417
Xiaoling 65.13 418 (((
Xiaoling 57.6 419 (% style="color:blue" %)**1**(%%)  -111dBm
Xiaoling 65.13 420 )))
Xiaoling 57.6 421
Xiaoling 65.13 422 (((
Xiaoling 57.6 423 (% style="color:blue" %)**2...30**(%%) -109dBm... -53dBm
Xiaoling 65.13 424 )))
Xiaoling 57.6 425
Xiaoling 65.13 426 (((
Xiaoling 57.6 427 (% style="color:blue" %)**31**  (%%) -51dBm or greater
Xiaoling 65.13 428 )))
Xiaoling 57.6 429
Xiaoling 65.13 430 (((
Xiaoling 57.6 431 (% style="color:blue" %)**99**   (%%) Not known or not detectable
Xiaoling 65.13 432 )))
Xiaoling 57.6 433
434
435
Xiaoling 95.4 436 === 2.4.5  Distance ===
Xiaoling 57.6 437
Xiaoling 91.1 438 Get the distance. Flat object range 280mm - 7500mm.
Xiaoling 4.2 439
Xiaoling 91.1 440 For example, if the data you get from the register is **__0x0B 0x05__**, the distance between the sensor and the measured object is
Xiaoling 4.2 441
Xiaoling 32.10 442 (((
443 (((
Xiaoling 91.4 444 (% style="color:blue" %)** 0B05(H) = 2821(D) = 2821mm.**
Xiaoling 32.10 445 )))
Xiaoling 32.11 446 )))
Xiaoling 4.2 447
Xiaoling 32.11 448 (((
Xiaoling 23.2 449
450 )))
Xiaoling 4.2 451
Xiaoling 23.2 452 (((
453
454 )))
455
Xiaoling 91.1 456 === 2.4.6  Digital Interrupt ===
Xiaoling 23.2 457
Xiaoling 65.15 458 (((
Xiaoling 91.1 459 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 65.15 460 )))
Xiaoling 4.2 461
Xiaoling 65.15 462 (((
Xiaoling 57.6 463 The command is:
Xiaoling 65.15 464 )))
Xiaoling 4.2 465
Xiaoling 65.15 466 (((
Xiaoling 57.8 467 (% 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 65.15 468 )))
Xiaoling 4.2 469
470
Xiaoling 65.15 471 (((
Xiaoling 65.6 472 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 65.15 473 )))
Xiaoling 4.2 474
475
Xiaoling 65.15 476 (((
Xiaoling 57.6 477 Example:
Xiaoling 65.15 478 )))
Xiaoling 4.2 479
Xiaoling 65.15 480 (((
Xiaoling 57.6 481 0x(00): Normal uplink packet.
Xiaoling 65.15 482 )))
Xiaoling 4.2 483
Xiaoling 65.15 484 (((
Xiaoling 57.6 485 0x(01): Interrupt Uplink Packet.
Xiaoling 65.15 486 )))
Xiaoling 23.2 487
Xiaoling 4.2 488
489
Xiaoling 91.1 490 === 2.4.7  ​+5V Output ===
Xiaoling 4.2 491
Xiaoling 65.16 492 (((
Xiaoling 91.1 493 NDDS75 will enable +5V output before all sampling and disable the +5v after all sampling. 
Xiaoling 65.16 494 )))
Xiaoling 4.2 495
Xiaoling 57.6 496
Xiaoling 65.16 497 (((
Xiaoling 57.6 498 The 5V output time can be controlled by AT Command.
Xiaoling 65.16 499 )))
Xiaoling 57.6 500
Xiaoling 65.16 501 (((
Xiaoling 57.7 502 (% style="color:blue" %)**AT+5VT=1000**
Xiaoling 65.16 503 )))
Xiaoling 57.6 504
Xiaoling 65.16 505 (((
Xiaoling 57.6 506 Means set 5V valid time to have 1000ms. So the real 5V output will actually have 1000ms + sampling time for other sensors.
Xiaoling 65.16 507 )))
Xiaoling 57.6 508
509
510
Xiaoling 58.2 511 == 2.5  Downlink Payload ==
Xiaoling 4.2 512
Xiaoling 92.2 513 By default, NDDS75 prints the downlink payload to console port.
Xiaoling 4.2 514
Xiaoling 92.2 515 [[image:image-20220709100028-1.png]]
Xiaoling 4.2 516
517
Xiaoling 32.14 518 (((
Xiaoling 40.4 519 (% style="color:blue" %)**Examples:**
Xiaoling 32.14 520 )))
Xiaoling 4.2 521
Xiaoling 32.14 522 (((
523
524 )))
Xiaoling 4.2 525
Xiaoling 32.14 526 * (((
Xiaoling 40.4 527 (% style="color:blue" %)**Set TDC**
Xiaoling 32.14 528 )))
Xiaoling 4.2 529
Xiaoling 32.14 530 (((
Xiaoling 60.2 531 If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
Xiaoling 32.14 532 )))
Xiaoling 4.2 533
Xiaoling 32.14 534 (((
Xiaoling 4.2 535 Payload:    01 00 00 1E    TDC=30S
Xiaoling 32.14 536 )))
Xiaoling 4.2 537
Xiaoling 32.14 538 (((
Xiaoling 4.2 539 Payload:    01 00 00 3C    TDC=60S
Xiaoling 32.14 540 )))
Xiaoling 4.2 541
Xiaoling 32.14 542 (((
543
544 )))
Xiaoling 4.2 545
Xiaoling 32.14 546 * (((
Xiaoling 40.4 547 (% style="color:blue" %)**Reset**
Xiaoling 32.14 548 )))
Xiaoling 4.2 549
Xiaoling 32.14 550 (((
Xiaoling 92.2 551 If payload = 0x04FF, it will reset the NDDS75
Xiaoling 32.14 552 )))
Xiaoling 4.2 553
554
Xiaoling 60.2 555 * (% style="color:blue" %)**INTMOD**
Xiaoling 4.2 556
Xiaoling 65.17 557 (((
Xiaoling 60.2 558 Downlink Payload: 06000003, Set AT+INTMOD=3
Xiaoling 65.17 559 )))
Xiaoling 4.2 560
561
Xiaoling 26.2 562
Xiaoling 60.2 563 == 2.6  ​LED Indicator ==
Xiaoling 26.2 564
Xiaoling 4.2 565
Xiaoling 92.2 566 The NDDS75 has an internal LED which is to show the status of different state.
Xiaoling 4.2 567
Xiaoling 92.2 568
569 * 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 60.2 570 * Then the LED will be on for 1 second means device is boot normally.
Xiaoling 92.2 571 * After NDDS75 join NB-IoT network. The LED will be ON for 3 seconds.
Xiaoling 60.2 572 * For each uplink probe, LED will be on for 500ms.
Xiaoling 92.2 573
574 (((
575
Xiaoling 32.15 576 )))
Xiaoling 4.2 577
578
579
Xiaoling 92.3 580 == 2.7  ​Firmware Change Log ==
Xiaoling 4.2 581
582
Xiaoling 92.3 583 Download URL & Firmware Change log
Xiaoling 4.2 584
Xiaoling 60.2 585 (((
Xiaoling 92.3 586 [[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 60.2 587 )))
Xiaoling 4.2 588
589
Xiaoling 65.6 590 Upgrade Instruction: [[Upgrade_Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
Xiaoling 28.5 591
Xiaoling 4.2 592
593
Xiaoling 95.2 594 == 2.8  ​Battery Analysis ==
Xiaoling 4.2 595
Xiaoling 95.2 596 === 2.8.1  ​Battery Type ===
Xiaoling 4.2 597
598
Xiaoling 65.18 599 (((
Xiaoling 95.2 600 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 65.18 601 )))
Xiaoling 4.2 602
Xiaoling 65.18 603 (((
Xiaoling 62.3 604 The battery is designed to last for several years depends on the actually use environment and update interval. 
Xiaoling 65.18 605 )))
Xiaoling 4.2 606
Xiaoling 65.18 607 (((
Xiaoling 60.2 608 The battery related documents as below:
Xiaoling 65.18 609 )))
Xiaoling 4.2 610
Xiaoling 60.2 611 * [[Battery Dimension>>http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
Xiaoling 65.7 612 * [[Lithium-Thionyl Chloride Battery datasheet>>http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
Xiaoling 60.2 613 * [[Lithium-ion Battery-Capacitor datasheet>>http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
Xiaoling 4.2 614
Xiaoling 29.2 615 (((
Xiaoling 95.2 616 [[image:image-20220709101450-2.png]]
Xiaoling 29.2 617 )))
Xiaoling 4.2 618
619
Xiaoling 35.18 620
Xiaoling 95.2 621 === 2.8.2  Power consumption Analyze ===
Xiaoling 4.2 622
Xiaoling 62.3 623 (((
Xiaoling 60.2 624 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 62.3 625 )))
Xiaoling 4.2 626
627
Xiaoling 62.3 628 (((
Xiaoling 60.2 629 Instruction to use as below:
Xiaoling 62.3 630 )))
Xiaoling 4.2 631
Xiaoling 62.3 632 (((
633 (% 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/]]
634 )))
Xiaoling 4.2 635
636
Xiaoling 62.3 637 (((
638 (% style="color:blue" %)**Step 2: **(%%) Open it and choose
639 )))
Xiaoling 4.2 640
Xiaoling 62.3 641 * (((
642 Product Model
643 )))
644 * (((
645 Uplink Interval
646 )))
647 * (((
648 Working Mode
649 )))
Xiaoling 4.2 650
Xiaoling 62.3 651 (((
Xiaoling 60.2 652 And the Life expectation in difference case will be shown on the right.
Xiaoling 62.3 653 )))
Xiaoling 4.2 654
Xiaoling 96.2 655 [[image:image-20220709110451-3.png]]
Xiaoling 4.2 656
657
Xiaoling 62.2 658
Xiaoling 95.2 659 === 2.8.3  ​Battery Note ===
Xiaoling 4.2 660
Xiaoling 31.6 661 (((
Xiaoling 4.2 662 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 31.3 663 )))
Xiaoling 4.2 664
665
666
Xiaoling 95.2 667 === 2.8.4  Replace the battery ===
Xiaoling 31.2 668
Xiaoling 62.2 669 (((
Xiaoling 95.2 670 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 62.2 671 )))
Xiaoling 4.2 672
673
674
Xiaoling 63.2 675 = 3. ​ Access NB-IoT Module =
Xiaoling 4.2 676
Xiaoling 63.2 677 (((
678 Users can directly access the AT command set of the NB-IoT module.
679 )))
680
681 (((
Xiaoling 64.2 682 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 63.2 683 )))
684
Xiaoling 95.2 685 [[image:1657333200519-600.png]]
Xiaoling 63.2 686
687
688
Xiaoling 64.2 689 = 4.  Using the AT Commands =
Xiaoling 63.2 690
Xiaoling 64.2 691 == 4.1  Access AT Commands ==
Xiaoling 9.2 692
Xiaoling 95.2 693 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 11.4 694
Xiaoling 4.2 695
Xiaoling 64.2 696 AT+<CMD>?  : Help on <CMD>
Xiaoling 4.2 697
Xiaoling 64.2 698 AT+<CMD>         : Run <CMD>
Xiaoling 4.2 699
Xiaoling 64.2 700 AT+<CMD>=<value> : Set the value
Xiaoling 4.2 701
Xiaoling 64.2 702 AT+<CMD>=?  : Get the value
Xiaoling 4.2 703
704
Xiaoling 11.6 705 (% style="color:#037691" %)**General Commands**(%%)      
Xiaoling 4.2 706
Xiaoling 64.2 707 AT  : Attention       
Xiaoling 4.2 708
Xiaoling 64.2 709 AT?  : Short Help     
Xiaoling 4.2 710
Xiaoling 64.2 711 ATZ  : MCU Reset    
Xiaoling 4.2 712
Xiaoling 64.2 713 AT+TDC  : Application Data Transmission Interval
Xiaoling 4.2 714
Xiaoling 64.2 715 AT+CFG  : Print all configurations
Xiaoling 4.2 716
Xiaoling 64.2 717 AT+CFGMOD           : Working mode selection
Xiaoling 4.2 718
Xiaoling 64.2 719 AT+INTMOD            : Set the trigger interrupt mode
Xiaoling 4.2 720
Xiaoling 64.2 721 AT+5VT  : Set extend the time of 5V power  
Xiaoling 4.2 722
Xiaoling 64.2 723 AT+PRO  : Choose agreement
Xiaoling 4.2 724
Xiaoling 64.2 725 AT+WEIGRE  : Get weight or set weight to 0
Xiaoling 4.2 726
Xiaoling 64.2 727 AT+WEIGAP  : Get or Set the GapValue of weight
Xiaoling 4.2 728
Xiaoling 64.2 729 AT+RXDL  : Extend the sending and receiving time
Xiaoling 4.2 730
Xiaoling 64.2 731 AT+CNTFAC  : Get or set counting parameters
Xiaoling 4.2 732
Xiaoling 64.2 733 AT+SERVADDR  : Server Address
Xiaoling 4.2 734
735
Xiaoling 64.2 736 (% style="color:#037691" %)**COAP Management**      
Xiaoling 4.2 737
Xiaoling 64.2 738 AT+URI            : Resource parameters
Xiaoling 4.2 739
740
Xiaoling 64.2 741 (% style="color:#037691" %)**UDP Management**
Xiaoling 4.2 742
Xiaoling 64.2 743 AT+CFM          : Upload confirmation mode (only valid for UDP)
Xiaoling 4.2 744
745
Xiaoling 64.2 746 (% style="color:#037691" %)**MQTT Management**
Xiaoling 4.2 747
Xiaoling 64.2 748 AT+CLIENT               : Get or Set MQTT client
Xiaoling 4.2 749
Xiaoling 64.2 750 AT+UNAME  : Get or Set MQTT Username
Xiaoling 4.2 751
Xiaoling 64.2 752 AT+PWD                  : Get or Set MQTT password
Xiaoling 4.2 753
Xiaoling 64.2 754 AT+PUBTOPIC  : Get or Set MQTT publish topic
Xiaoling 4.2 755
Xiaoling 64.2 756 AT+SUBTOPIC  : Get or Set MQTT subscription topic
Xiaoling 4.2 757
758
Xiaoling 64.2 759 (% style="color:#037691" %)**Information**          
Xiaoling 4.2 760
Xiaoling 64.2 761 AT+FDR  : Factory Data Reset
Xiaoling 4.2 762
Xiaoling 64.2 763 AT+PWORD  : Serial Access Password
Xiaoling 4.2 764
765
766
Xiaoling 64.4 767 = ​5.  FAQ =
Xiaoling 4.2 768
Xiaoling 64.4 769 == 5.1 ​ How to Upgrade Firmware ==
Xiaoling 6.3 770
Xiaoling 4.2 771
Xiaoling 31.35 772 (((
Xiaoling 64.4 773 User can upgrade the firmware for 1) bug fix, 2) new feature release.
Xiaoling 31.35 774 )))
Xiaoling 4.2 775
Xiaoling 31.35 776 (((
Xiaoling 64.4 777 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 31.35 778 )))
Xiaoling 4.2 779
Xiaoling 31.35 780 (((
Xiaoling 95.2 781 (% style="color:red" %)Notice, NDDS75 and LDDS75 share the same mother board. They use the same connection and method to update.
Xiaoling 31.35 782 )))
Xiaoling 4.2 783
784
785
Xiaoling 64.5 786 = 6.  Trouble Shooting =
Xiaoling 4.2 787
Xiaoling 64.5 788 == 6.1  ​Connection problem when uploading firmware ==
Xiaoling 4.9 789
Xiaoling 4.2 790
Xiaoling 65.20 791 (((
792 **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]]
793 )))
794
Xiaoling 64.5 795 (% class="wikigeneratedid" %)
Xiaoling 31.29 796 (((
Xiaoling 65.20 797
Xiaoling 31.29 798 )))
Xiaoling 4.2 799
800
Xiaoling 64.5 801 == 6.2  AT Command input doesn't work ==
Xiaoling 4.2 802
Xiaoling 31.30 803 (((
Xiaoling 64.5 804 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 65.22 805
Xiaoling 65.23 806
Xiaoling 31.30 807 )))
Xiaoling 4.2 808
809
Xiaoling 64.5 810 = 7. ​ Order Info =
Xiaoling 4.2 811
812
Xiaoling 95.3 813 Part Number**:** (% style="color:#4f81bd" %)**NSDDS75**
Xiaoling 4.7 814
Xiaoling 4.2 815
Xiaoling 31.10 816 (% class="wikigeneratedid" %)
817 (((
818
819 )))
820
Xiaoling 65.2 821 = 8.  Packing Info =
Xiaoling 4.2 822
Xiaoling 4.3 823 (((
Xiaoling 31.39 824
825
Xiaoling 31.40 826 (% style="color:#037691" %)**Package Includes**:
Xiaoling 64.5 827
Xiaoling 95.3 828 * NSE01 NB-IoT Distance Detect Sensor Node x 1
Xiaoling 64.5 829 * External antenna x 1
Xiaoling 4.3 830 )))
Xiaoling 4.2 831
Xiaoling 4.3 832 (((
Xiaoling 31.40 833
834
835 (% style="color:#037691" %)**Dimension and weight**:
Xiaoling 4.2 836
Xiaoling 95.3 837
838 * Device Size: 13.0 x 5 x 4.5 cm
839 * Device Weight: 150g
840 * Package Size / pcs : 15 x 12x 5.5 cm
841 * Weight / pcs : 220g
Xiaoling 4.3 842 )))
Xiaoling 31.11 843
Xiaoling 64.5 844 (((
Xiaoling 31.11 845
Xiaoling 64.5 846
847
848
Xiaoling 4.3 849 )))
Xiaoling 4.2 850
Xiaoling 64.5 851 = 9.  Support =
Xiaoling 4.2 852
853 * 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.
854 * 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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