Version 99.1 by Xiaoling on 2022/07/11 14:10
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1 (% style="text-align:center" %)
2 [[image:image-20220709085040-1.png||height="542" width="524"]]
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6
7
8 **Table of Contents:**
9
10 {{toc/}}
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15
16
17 = 1.  Introduction =
18
19 == 1.1 ​ What is NDDS75 Distance Detection Sensor ==
20
21 (((
22
23
24 (((
25 (((
26 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.
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28
29 (((
30 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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32
33 (((
34 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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36
37 (((
38 NDDS75 supports different uplink methods include (% style="color:blue" %)**TCP, MQTT, UDP and CoAP** (%%)for different application requirement.
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40
41 (((
42 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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44
45 (((
46 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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51 )))
52
53 [[image:1657327959271-447.png]]
54
55
56
57 == 1.2 ​ Features ==
58
59 * NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
60 * Ultra low power consumption
61 * Distance Detection by Ultrasonic technology
62 * Flat object range 280mm - 7500mm
63 * Accuracy: ±(1cm+S*0.3%) (S: Distance)
64 * Cable Length: 25cm
65 * AT Commands to change parameters
66 * Uplink on periodically
67 * Downlink to change configure
68 * IP66 Waterproof Enclosure
69 * Micro SIM card slot for NB-IoT SIM
70 * 8500mAh Battery for long term use
71
72
73 == 1.3  Specification ==
74
75 (% style="color:#037691" %)**Common DC Characteristics:**
76
77 * Supply Voltage: 2.1v ~~ 3.6v
78 * Operating Temperature: -40 ~~ 85°C
79
80 (% style="color:#037691" %)**NB-IoT Spec:**
81
82 * - B1 @H-FDD: 2100MHz
83 * - B3 @H-FDD: 1800MHz
84 * - B8 @H-FDD: 900MHz
85 * - B5 @H-FDD: 850MHz
86 * - B20 @H-FDD: 800MHz
87 * - B28 @H-FDD: 700MHz
88
89 (% style="color:#037691" %)**Battery:**
90
91 * Li/SOCI2 un-chargeable battery
92 * Capacity: 8500mAh
93 * Self Discharge: <1% / Year @ 25°C
94 * Max continuously current: 130mA
95 * Max boost current: 2A, 1 second
96
97 (% style="color:#037691" %)**Power Consumption**
98
99 * STOP Mode: 10uA @ 3.3v
100 * Max transmit power: 350mA@3.3v
101
102
103 == ​1.4  Applications ==
104
105 * Smart Buildings & Home Automation
106 * Logistics and Supply Chain Management
107 * Smart Metering
108 * Smart Agriculture
109 * Smart Cities
110 * Smart Factory
111
112 (% class="wikigeneratedid" id="H200B1.5FirmwareChangelog" %)
113 ​
114
115
116 == 1.5  Pin Definitions ==
117
118
119 [[image:1657328609906-564.png]]
120
121
122
123 = 2.  Use NDDS75 to communicate with IoT Server =
124
125 == 2.1  How it works ==
126
127 (((
128 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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130
131
132 (((
133 The diagram below shows the working flow in default firmware of NDDS75:
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135
136 (((
137
138 )))
139
140 [[image:1657328659945-416.png]]
141
142 (((
143
144 )))
145
146
147 == 2.2 ​ Configure the NDDS75 ==
148
149
150 === 2.2.1 Test Requirement ===
151
152 (((
153 To use NDDS75 in your city, make sure meet below requirements:
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155
156 * Your local operator has already distributed a NB-IoT Network there.
157 * The local NB-IoT network used the band that NDDS75 supports.
158 * Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
159
160 (((
161 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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163
164
165 [[image:1657328756309-230.png]]
166
167
168
169 === 2.2.2 Insert SIM card ===
170
171 (((
172 Insert the NB-IoT Card get from your provider.
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174
175 (((
176 User need to take out the NB-IoT module and insert the SIM card like below:
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178
179
180 [[image:1657328884227-504.png]]
181
182
183
184 === 2.2.3 Connect USB – TTL to NDDS75 to configure it ===
185
186 (((
187 (((
188 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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191
192 [[image:image-20220709092052-2.png]]
193
194 **Connection:**
195
196 (% style="background-color:yellow" %)USB TTL GND <~-~-~-~-> GND
197
198 (% style="background-color:yellow" %)USB TTL TXD <~-~-~-~-> UART_RXD
199
200 (% style="background-color:yellow" %)USB TTL RXD <~-~-~-~-> UART_TXD
201
202
203 In the PC, use below serial tool settings:
204
205 * Baud:  (% style="color:green" %)**9600**
206 * Data bits:** (% style="color:green" %)8(%%)**
207 * Stop bits: (% style="color:green" %)**1**
208 * Parity:  (% style="color:green" %)**None**
209 * Flow Control: (% style="color:green" %)**None**
210
211 (((
212 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.
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214
215 [[image:1657329814315-101.png]]
216
217 (((
218 (% 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/]]
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220
221
222
223 === 2.2.4 Use CoAP protocol to uplink data ===
224
225 (% 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/]]
226
227
228 (((
229 **Use below commands:**
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231
232 * (((
233 (% style="color:blue" %)**AT+PRO=1**  (%%) ~/~/ Set to use CoAP protocol to uplink
234 )))
235 * (((
236 (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5683   ** (%%)~/~/ to set CoAP server address and port
237 )))
238 * (((
239 (% style="color:blue" %)**AT+URI=5,11,"mqtt",11,"coap",12,"0",15,"c=text1",23,"0" ** (%%) ~/~/Set COAP resource path
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241
242 (((
243 For parameter description, please refer to AT command set
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245
246 [[image:1657330452568-615.png]]
247
248
249 (((
250 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.
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252
253 [[image:1657330472797-498.png]]
254
255
256
257 === 2.2.5 Use UDP protocol to uplink data(Default protocol) ===
258
259
260 * (% style="color:blue" %)**AT+PRO=2   ** (%%) ~/~/ Set to use UDP protocol to uplink
261 * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5601   ** (%%) ~/~/ to set UDP server address and port
262 * (% style="color:blue" %)**AT+CFM=1       ** (%%) ~/~/ If the server does not respond, this command is unnecessary
263
264 [[image:1657330501006-241.png]]
265
266
267 [[image:1657330533775-472.png]]
268
269
270
271 === 2.2.6 Use MQTT protocol to uplink data ===
272
273
274 * (% style="color:blue" %)**AT+PRO=3   ** (%%) ~/~/Set to use MQTT protocol to uplink
275 * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,1883   ** (%%) ~/~/Set MQTT server address and port
276 * (% style="color:blue" %)**AT+CLIENT=CLIENT       ** (%%)~/~/Set up the CLIENT of MQTT
277 * (% style="color:blue" %)**AT+UNAME=UNAME                                **(%%)~/~/Set the username of MQTT
278 * (% style="color:blue" %)**AT+PWD=PWD                                         **(%%)~/~/Set the password of MQTT
279 * (% style="color:blue" %)**AT+PUBTOPIC=NDDS75_PUB                 **(%%)~/~/Set the sending topic of MQTT
280 * (% style="color:blue" %)**AT+SUBTOPIC=NDDS75_SUB          **(%%) ~/~/Set the subscription topic of MQTT
281
282 [[image:1657249978444-674.png]]
283
284
285 [[image:1657330723006-866.png]]
286
287
288 (((
289 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.
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291
292
293
294 === 2.2.7 Use TCP protocol to uplink data ===
295
296
297 * (% style="color:blue" %)**AT+PRO=4   ** (%%) ~/~/ Set to use TCP protocol to uplink
298 * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5600   **(%%) ~/~/ to set TCP server address and port
299
300 [[image:image-20220709093918-1.png]]
301
302
303 [[image:image-20220709093918-2.png]]
304
305
306
307 === 2.2.8 Change Update Interval ===
308
309 User can use below command to change the (% style="color:green" %)**uplink interval**.
310
311 * (% style="color:blue" %)**AT+TDC=600      ** (%%)~/~/ Set Update Interval to 600s
312
313 (((
314 (% style="color:red" %)**NOTE:**
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316
317 (((
318 (% style="color:red" %)1. By default, the device will send an uplink message every 1 hour.
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320
321
322
323 == 2.3  Uplink Payload ==
324
325 In this mode, uplink payload includes in total 14 bytes
326
327
328 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:440px" %)
329 |=(% style="width: 60px;" %)(((
330 **Size(bytes)**
331 )))|=(% style="width: 60px;" %)**6**|=(% style="width: 35px;" %)2|=(% style="width: 35px;" %)**2**|=(% style="width: 80px;" %)**1**|=(% style="width: 100px;" %)**2**|=(% style="width: 60px;" %)**1**
332 |(% 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"]]
333
334 (((
335 If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NDDS751 uplink data.
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337
338
339 [[image:1657331036973-987.png]]
340
341 (((
342 The payload is ASCII string, representative same HEX:
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344
345 (((
346 0x72403155615900640c6c19029200 where:
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348
349 * (((
350 Device ID: 0x724031556159 = 724031556159
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352 * (((
353 Version: 0x0064=100=1.0.0
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355
356 * (((
357 BAT: 0x0c6c = 3180 mV = 3.180V
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359 * (((
360 Signal: 0x19 = 25
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362 * (((
363 Distance: 0x0292= 658 mm
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365 * (((
366 Interrupt: 0x00 = 0
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372
373 == 2.4  Payload Explanation and Sensor Interface ==
374
375
376 === 2.4.1  Device ID ===
377
378 (((
379 By default, the Device ID equal to the last 6 bytes of IMEI.
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381
382 (((
383 User can use (% style="color:blue" %)**AT+DEUI**(%%) to set Device ID
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385
386 (((
387 **Example:**
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389
390 (((
391 AT+DEUI=A84041F15612
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393
394 (((
395 The Device ID is stored in a none-erase area, Upgrade the firmware or run **AT+FDR** won't erase Device ID.
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397
398
399
400 === 2.4.2  Version Info ===
401
402 (((
403 Specify the software version: 0x64=100, means firmware version 1.00.
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405
406 (((
407 For example: 0x00 64 : this device is NDDS75 with firmware version 1.0.0.
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409
410
411
412 === 2.4.3  Battery Info ===
413
414 (((
415 Ex1: 0x0B45 = 2885mV
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417
418 (((
419 Ex2: 0x0B49 = 2889mV
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421
422
423
424 === 2.4.4  Signal Strength ===
425
426 (((
427 NB-IoT Network signal Strength.
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429
430 (((
431 **Ex1: 0x1d = 29**
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433
434 (((
435 (% style="color:blue" %)**0**(%%)  -113dBm or less
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437
438 (((
439 (% style="color:blue" %)**1**(%%)  -111dBm
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441
442 (((
443 (% style="color:blue" %)**2...30**(%%) -109dBm... -53dBm
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445
446 (((
447 (% style="color:blue" %)**31**  (%%) -51dBm or greater
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449
450 (((
451 (% style="color:blue" %)**99**   (%%) Not known or not detectable
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453
454
455
456 === 2.4.5  Distance ===
457
458 Get the distance. Flat object range 280mm - 7500mm.
459
460 (((
461 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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463
464 (((
465 (((
466 (% style="color:blue" %)** 0B05(H) = 2821(D) = 2821mm.**
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469
470 (((
471
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473
474 (((
475
476 )))
477
478 === 2.4.6  Digital Interrupt ===
479
480 (((
481 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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483
484 (((
485 The command is:
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487
488 (((
489 (% 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]])**.**
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491
492
493 (((
494 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.
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496
497
498 (((
499 Example:
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501
502 (((
503 0x(00): Normal uplink packet.
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505
506 (((
507 0x(01): Interrupt Uplink Packet.
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509
510
511
512 === 2.4.7  ​+5V Output ===
513
514 (((
515 NDDS75 will enable +5V output before all sampling and disable the +5v after all sampling. 
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517
518
519 (((
520 The 5V output time can be controlled by AT Command.
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522
523 (((
524 (% style="color:blue" %)**AT+5VT=1000**
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526
527 (((
528 Means set 5V valid time to have 1000ms. So the real 5V output will actually have 1000ms + sampling time for other sensors.
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530
531
532
533 == 2.5  Downlink Payload ==
534
535 By default, NDDS75 prints the downlink payload to console port.
536
537 [[image:image-20220709100028-1.png]]
538
539
540 (((
541 (% style="color:blue" %)**Examples:**
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543
544 (((
545
546 )))
547
548 * (((
549 (% style="color:blue" %)**Set TDC**
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551
552 (((
553 If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
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555
556 (((
557 Payload:    01 00 00 1E    TDC=30S
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559
560 (((
561 Payload:    01 00 00 3C    TDC=60S
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563
564 (((
565
566 )))
567
568 * (((
569 (% style="color:blue" %)**Reset**
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571
572 (((
573 If payload = 0x04FF, it will reset the NDDS75
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575
576
577 * (% style="color:blue" %)**INTMOD**
578
579 (((
580 Downlink Payload: 06000003, Set AT+INTMOD=3
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582
583
584
585 == 2.6  ​LED Indicator ==
586
587
588 The NDDS75 has an internal LED which is to show the status of different state.
589
590
591 * 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)
592 * Then the LED will be on for 1 second means device is boot normally.
593 * After NDDS75 join NB-IoT network. The LED will be ON for 3 seconds.
594 * For each uplink probe, LED will be on for 500ms.
595
596 (((
597
598 )))
599
600
601
602 == 2.7  ​Firmware Change Log ==
603
604
605 (((
606 Download URL & Firmware Change log
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608
609 (((
610 [[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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612
613
614 (((
615 Upgrade Instruction: [[Upgrade_Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
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617
618
619
620 == 2.8  ​Battery Analysis ==
621
622 === 2.8.1  ​Battery Type ===
623
624
625 (((
626 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.
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628
629 (((
630 The battery is designed to last for several years depends on the actually use environment and update interval. 
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632
633 (((
634 The battery related documents as below:
635 )))
636
637 * [[Battery Dimension>>http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
638 * [[Lithium-Thionyl Chloride Battery datasheet>>http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
639 * [[Lithium-ion Battery-Capacitor datasheet>>http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
640
641 (((
642 [[image:image-20220709101450-2.png]]
643 )))
644
645
646
647 === 2.8.2  Power consumption Analyze ===
648
649 (((
650 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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652
653
654 (((
655 Instruction to use as below:
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657
658 (((
659 (% 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/]]
660 )))
661
662
663 (((
664 (% style="color:blue" %)**Step 2: **(%%) Open it and choose
665 )))
666
667 * (((
668 Product Model
669 )))
670 * (((
671 Uplink Interval
672 )))
673 * (((
674 Working Mode
675 )))
676
677 (((
678 And the Life expectation in difference case will be shown on the right.
679 )))
680
681 [[image:image-20220709110451-3.png]]
682
683
684
685 === 2.8.3  ​Battery Note ===
686
687 (((
688 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.
689 )))
690
691
692
693 === 2.8.4  Replace the battery ===
694
695 (((
696 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).
697 )))
698
699
700
701 = 3. ​ Access NB-IoT Module =
702
703 (((
704 Users can directly access the AT command set of the NB-IoT module.
705 )))
706
707 (((
708 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/]] 
709 )))
710
711 [[image:1657333200519-600.png]]
712
713
714
715 = 4.  Using the AT Commands =
716
717 == 4.1  Access AT Commands ==
718
719 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/]]
720
721
722 AT+<CMD>?  : Help on <CMD>
723
724 AT+<CMD>         : Run <CMD>
725
726 AT+<CMD>=<value> : Set the value
727
728 AT+<CMD>=?  : Get the value
729
730
731 (% style="color:#037691" %)**General Commands**(%%)      
732
733 AT  : Attention       
734
735 AT?  : Short Help     
736
737 ATZ  : MCU Reset    
738
739 AT+TDC  : Application Data Transmission Interval
740
741 AT+CFG  : Print all configurations
742
743 AT+CFGMOD           : Working mode selection
744
745 AT+INTMOD            : Set the trigger interrupt mode
746
747 AT+5VT  : Set extend the time of 5V power  
748
749 AT+PRO  : Choose agreement
750
751 AT+WEIGRE  : Get weight or set weight to 0
752
753 AT+WEIGAP  : Get or Set the GapValue of weight
754
755 AT+RXDL  : Extend the sending and receiving time
756
757 AT+CNTFAC  : Get or set counting parameters
758
759 AT+SERVADDR  : Server Address
760
761
762 (% style="color:#037691" %)**COAP Management**      
763
764 AT+URI            : Resource parameters
765
766
767 (% style="color:#037691" %)**UDP Management**
768
769 AT+CFM          : Upload confirmation mode (only valid for UDP)
770
771
772 (% style="color:#037691" %)**MQTT Management**
773
774 AT+CLIENT               : Get or Set MQTT client
775
776 AT+UNAME  : Get or Set MQTT Username
777
778 AT+PWD                  : Get or Set MQTT password
779
780 AT+PUBTOPIC  : Get or Set MQTT publish topic
781
782 AT+SUBTOPIC  : Get or Set MQTT subscription topic
783
784
785 (% style="color:#037691" %)**Information**          
786
787 AT+FDR  : Factory Data Reset
788
789 AT+PWORD  : Serial Access Password
790
791
792
793 = ​5.  FAQ =
794
795 == 5.1 ​ How to Upgrade Firmware ==
796
797
798 (((
799 User can upgrade the firmware for 1) bug fix, 2) new feature release.
800 )))
801
802 (((
803 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]]
804 )))
805
806 (((
807 (% style="color:red" %)Notice, NDDS75 and LDDS75 share the same mother board. They use the same connection and method to update.
808 )))
809
810
811
812 = 6.  Trouble Shooting =
813
814 == 6.1  ​Connection problem when uploading firmware ==
815
816
817 (((
818 **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]]
819 )))
820
821 (% class="wikigeneratedid" %)
822 (((
823
824 )))
825
826
827 == 6.2  AT Command input doesn't work ==
828
829 (((
830 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.
831
832
833 )))
834
835
836 = 7. ​ Order Info =
837
838
839 Part Number**:** (% style="color:#4f81bd" %)**NSDDS75**
840
841
842 (% class="wikigeneratedid" %)
843 (((
844
845 )))
846
847 = 8.  Packing Info =
848
849 (((
850
851
852 (% style="color:#037691" %)**Package Includes**:
853
854 * NDDS75 NB-IoT Distance Detect Sensor Node x 1
855 * External antenna x 1
856 )))
857
858 (((
859
860
861 (% style="color:#037691" %)**Dimension and weight**:
862
863 * Device Size: 13.0 x 5 x 4.5 cm
864 * Device Weight: 150g
865 * Package Size / pcs : 15 x 12x 5.5 cm
866 * Weight / pcs : 220g
867 )))
868
869 (((
870
871
872
873
874 )))
875
876 = 9.  Support =
877
878 * 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.
879 * 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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