Skip to Content
Version 51.3 by Xiaoling on 2022/09/12 15:01
Show last authors
1 (% style="text-align:center" %)
2 [[image:)YK]Y_LZJIO]J2~~VA}OQJM2.png||height="442" width="410"]]
3
4 **Table of Contents:**
5
6 {{toc/}}
7
8
9
10 = 1.  Introduction =
11
12
13 == 1.1 ​ What is NSPH01 Soil pH Sensor ==
14
15
16 The Dragino NSPH01 is a (% style="color:blue" %)**NB-IoT soil pH sensor**(%%) for IoT of Agriculture. It is designed to measure the soil pH and soil temperature, so to send to the platform to analyze the soil acid or alkali level. The probe is IP68 waterproof.
17
18 NSPH01 probe is made by Solid AgCl reference electrode and Pure metal pH sensitive electrode. It can detect soil's** (% style="color:blue" %)pH (%%)**with high accuracy and stable value. The NSPH01 probe can be buried into soil for long time use.
19
20 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.
21 \\NSPH01 supports different uplink methods include (% style="color:blue" %)**TCP,MQTT,UDP and CoAP  **(%%)for different application requirement.
22 \\NSPH01 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)
23 \\To use NSPH01, user needs to check if there is NB-IoT coverage in the installation area and with the bands NSPH01 supports. If the local operator supports it, user needs to get a (% style="color:blue" %)**NB-IoT SIM card** (%%)from local operator and install NSPH01 to get NB-IoT network connection.
24
25
26 [[image:image-20220907153151-1.png]]
27
28
29 [[image:M_K`YF9`CAYAE\@}3T]FHT$9.png]]
30
31
32
33 == 1.2  Features ==
34
35
36 * NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
37 * Monitor soil pH with temperature compensation.
38 * Monitor soil temperature
39 * pH and Temperature alarm function
40 * Monitor Battery Level
41 * Support pH calibration by end user
42 * Uplink on periodically
43 * Downlink to change configure
44 * IP66 Waterproof Enclosure
45 * IP68 rate for the Sensor Probe
46 * Ultra-Low Power consumption
47 * AT Commands to change parameters
48 * Micro SIM card slot
49 * 8500mAh Battery for long term use
50
51 == 1.3  Specification ==
52
53
54 (% style="color:#037691" %)**Common DC Characteristics:**
55
56 * Supply Voltage: 2.1v ~~ 3.6v
57 * Operating Temperature: -40 ~~ 85°C
58
59 (% style="color:#037691" %)**NB-IoT Spec:**
60
61 * - B1 @H-FDD: 2100MHz
62 * - B3 @H-FDD: 1800MHz
63 * - B8 @H-FDD: 900MHz
64 * - B5 @H-FDD: 850MHz
65 * - B20 @H-FDD: 800MHz
66 * - B28 @H-FDD: 700MHz
67
68 == 1.4  Probe Specification ==
69
70
71 (% style="color:#037691" %)**Soil pH:**
72
73 * Range: 3 ~~ 10 pH
74 * Resolution: 0.01 pH
75 * Accuracy: ±2% under (0~~50 ℃, Accuracy will poor under 0 due to frozen)
76 * Temperature Compensation Range: 0 ~~ 50℃
77 * IP68 Protection
78 * Length: 3.5 meters
79
80 (% style="color:#037691" %)**Soil Temperature:**
81
82 * Range -40℃～85℃
83 * Resolution: 0.1℃
84 * Accuracy: <±0.5℃(-10℃～40℃)，<±0.8℃ (others)
85 * IP68 Protection
86 * Length: 3.5 meters
87
88 == 1.5 ​Applications ==
89
90 * Smart Agriculture
91
92 == 1.6 Pin mapping and power on ==
93
94
95 [[image:image-20220907153300-2.png]]
96
97
98
99 = 2.  Use NSPH01 to communicate with IoT Server =
100
101
102 == 2.1  How it works ==
103
104
105 The NSPH01 is equipped with a NB-IoT module, the pre-loaded firmware in NSPH01 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 NSPH01.
106
107 The diagram below shows the working flow in default firmware of NSPH01:
108
109
110 [[image:image-20220907153416-3.png]]
111
112
113
114 == 2.2 ​ Configure the NSPH01 ==
115
116
117 === 2.2.1 Test Requirement ===
118
119
120 To use NSPH01 in the field, make sure meet below requirements:
121
122 * Your local operator has already distributed a NB-IoT Network there.
123 * The local NB-IoT network used the band that NSPH01 supports.
124 * Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
125
126 Below figure shows our testing structure. Here we have NB-IoT network coverage by China Mobile, the band they use is B8.  The NSPH01 will use CoAP(120.24.4.116:5683) or raw UDP(120.24.4.116:5601) or MQTT(120.24.4.116:1883)or TCP(120.24.4.116:5600)protocol to send data to the test server.
127
128
129 [[image:image-20220907153445-4.png]]
130
131
132
133 === 2.2.2 Insert SIM card ===
134
135
136 User need to take out the NB-IoT module and insert the SIM card like below. ((% style="color:red" %) Pay attention to the direction(%%))
137
138 [[image:image-20220907153505-5.png]]
139
140
141
142 === 2.2.3 Connect USB – TTL to NSPH01 to configure it ===
143
144
145 User need to configure NSPH01 via serial port to set the (% style="color:blue" %)**Server Address** / **Uplink Topic**(%%) to define where and how-to uplink packets. NSPH01 support AT Commands, user can use a USB to TTL adapter to connect to NSPH01 and use AT Commands to configure it, as below.
146
147
148 (% style="color:blue" %)**Connection:**
149
150 **~ (% style="background-color:yellow" %) USB TTL GND <~-~-~-~->  GND(%%)**
151
152 **~ (% style="background-color:yellow" %) USB TTL TXD  <~-~-~-~->  UART_RXD(%%)**
153
154 **~ (% style="background-color:yellow" %) USB TTL RXD  <~-~-~-~->  UART_TXD(%%)**
155
156
157 In the PC, use below serial tool settings:
158
159 * Baud:  (% style="color:green" %)**9600**
160 * Data bits:**  (% style="color:green" %)8(%%)**
161 * Stop bits:  (% style="color:green" %)**1**
162 * Parity:  (% style="color:green" %)**None**
163 * Flow Control: (% style="color:green" %)**None**
164 *
165
166 Make sure the switch is in FLASH position, then power on device by connecting the jumper on NSPH01. NSPH01 will output system info once power on as below, we can enter the (% style="color:green" %)**password: 12345678**(%%) to access AT Command input.
167
168
169 [[image:image-20220912144017-1.png]]
170
171
172 (% style="color:red" %)**Note: the valid AT Commands can be found at:**(%%)**  **[[**https:~~/~~/www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0**>>url:https://www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0]]
173
174
175
176 === 2.2.4 Use CoAP protocol to uplink data ===
177
178
179 (% 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/**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/]]
180
181
182 (% style="color:blue" %)**Use below commands:**
183
184 * (% style="color:#037691" %)**AT+PRO=1**                         (%%) ~/~/  Set to use CoAP protocol to uplink
185 * (% style="color:#037691" %)**AT+SERVADDR=120.24.4.116,5683   ** (%%) ~/~/  to set CoAP server address and port
186 * (% style="color:#037691" %)**AT+URI=5,11,"mqtt",11,"coap",12,"0",15,"c=text1",23,"0" ** (%%) ~/~/  Set COAP resource path
187
188 For parameter description, please refer to AT command set
189
190
191 [[image:image-20220907153551-7.png||height="502" width="740"]]
192
193
194 After configure the server address and (% style="color:green" %)**reset the device (via AT+ATZ )**(%%), NSPH01 will start to uplink sensor values to CoAP server.
195
196
197 [[image:image-20220907153612-8.png||height="529" width="729"]]
198
199
200
201 === 2.2.5 Use UDP protocol to uplink data(Default protocol) ===
202
203
204 This feature is supported since firmware version v1.0.1
205 (%%)
206 * **(% style="color:blue" %)AT+PRO=2   ** ~/~/  Set to use UDP protocol to uplink
207 * **(% style="color:blue" %)AT+SERVADDR=120.24.4.116,5601   ** (%%) ~/~/  to set UDP server address and port
208 * **(% style="color:blue" %)AT+CFM=1       ** (%%) ~/~/  If the server does not respond, this command is unnecessar
209
210 [[image:image-20220907153643-9.png||height="401" width="734"]]
211
212
213 [[image:image-20220907153703-10.png||height="309" width="738"]]
214
215
216 === 2.2.6 Use MQTT protocol to uplink data ===
217
218 This feature is supported since firmware version v110
219
220 * **(% style="color:blue" %)AT+PRO=3   ** (%%) ~/~/Set to use MQTT protocol to uplink
221 * **(% style="color:blue" %)AT+SERVADDR=120.24.4.116,1883   ** (%%) ~/~/Set MQTT server address and port
222 * **(% style="color:blue" %)AT+CLIENT=CLIENT       ** (%%) ~/~/Set up the CLIENT of MQTT
223 * **(% style="color:blue" %)AT+UNAME=UNAME                               ** (%%)~/~/Set the username of MQTT
224 * **(% style="color:blue" %)AT+PWD=PWD                                        ** (%%)~/~/Set the password of MQTT
225 * **(% style="color:blue" %)AT+PUBTOPIC=NSE01_PUB                    **(%%) ~/~/Set the sending topic of MQTT
226 * **(% style="color:blue" %)AT+SUBTOPIC=NSE01_SUB          ** (%%) ~/~/Set the subscription topic of MQTT
227
228
229 [[image:image-20220907153739-11.png||height="491" width="764"]]
230
231
232 [[image:image-20220907153751-12.png||height="555" width="769"]]
233
234 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.
235
236
237
238
239 === 2.2.7 Use TCP protocol to uplink data ===
240
241 This feature is supported since firmware version v110
242
243 * **(% style="color:blue" %)AT+PRO=4   ** (%%) ~/~/ Set to use TCP protocol to uplink
244 * **(% style="color:blue" %)AT+SERVADDR=120.24.4.116,5600   ** (%%) ~/~/ to set TCP server address and port
245
246
247 [[image:image-20220907153818-13.png||height="486" width="668"]]
248
249
250 [[image:image-20220907153827-14.png||height="236" width="684"]]
251
252
253
254
255 === 2.2.8 Change Update Interval ===
256
257 Users can use the below command to change the **uplink interval**.
258
259 * **(% style="color:blue" %)AT+TDC=7200      ** (%%) ~/~/ Set Update Interval to 7200s (2 hour)
260
261 **(% style="color:red" %)NOTE: By default, the device will send an uplink message every 2 hours. Each Uplink Include 8 set of records in this 2 hour (15 minute interval / record).**
262
263
264 == 2.3  Uplink Payload ==
265
266 In this mode, uplink payload includes 87 bytes in total by default.
267
268 Each time the device uploads a data package, 8 sets of recorded data will be attached. Up to 32 sets of recorded data can be uploaded.
269
270 |**Size(bytes)**|**8**|**2**|**2**|1|1|1|2|2|4|2|2|4
271 |**Value**|Device ID|Ver|BAT|Signal Strength|MOD|Interrupt|Soil PH|Soil Temperature|Time stamp|Soil Temperature|Soil PH|Time stamp  .....
272
273 If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NSPH01 uplink data.
274
275 (% style="text-align:center" %)
276 [[image:image-20220907153902-15.png||height="581" width="804"]]
277
278
279 The payload is ASCII string, representative same HEX:
280
281 0x(% style="color:red" %)f868411056754138(% style="color:blue" %)0064(% style="color:green" %)0c78(% style="color:red" %)17(% style="color:blue" %)01(% style="color:green" %)00(% style="color:red" %)**//0225010b6315537b//**010b0226631550fb//**010e022663154d77**//01110225631549f1//**011502246315466b**//01190223631542e5//**011d022163153f62**//011e022163153bde//**011e022163153859**//(%%) where:
282
283 * (% style="color:red" %)Device ID: 0xf868411056754138 = f868411056754138
284 * (% style="color:blue" %)Version: 0x0064=100=1.0.0
285 * (% style="color:green" %)BAT: 0x0c78 = 3192 mV = 3.192V
286 * (% style="color:red" %)Singal: 0x17 = 23
287 * (% style="color:blue" %)Mod: 0x01 = 1
288 * (% style="color:green" %)Interrupt: 0x00= 0
289 * Soil PH: 0x0225= 549 = 5.49
290 * Soil Temperature:0x010B =267=26.7 °C
291 * Time stamp : 0x6315537b =1662342011  ([[Unix Epoch Time>>url:http://www.epochconverter.com/]])
292 * Soil Temperature,Soil PH,Time stamp : 010b0226631550fb
293 * (% style="color:red" %)8 sets of recorded data: Temperature,Soil PH,Time stamp : 010e022663154d77,.......
294
295 == 2.4  Payload Explanation and Sensor Interface ==
296
297 === 2.4.1  Device ID ===
298
299 By default, the Device ID equal to the last 15 bits of IMEI.
300
301 User can use **(% style="color:blue" %)AT+DEUI** (%%)to set Device ID
302
303 **Example:**
304
305 AT+DEUI=868411056754138
306
307 The Device ID is stored in a none-erase area, Upgrade the firmware or run AT+FDR won't erase Device ID.
308
309 === 2.4.2  Version Info ===
310
311 Specify the software version: 0x64=100, means firmware version 1.00.
312
313 For example: 0x00 64 : this device is NSPH01 with firmware version 1.0.0.
314
315 === 2.4.3  Battery Info ===
316
317 Check the battery voltage for NSPH01.
318
319 Ex1: 0x0B45 = 2885mV
320
321 Ex2: 0x0B49 = 2889mV
322
323 === 2.4.4  Signal Strength ===
324
325 NB-IoT Network signal Strength.
326
327 **Ex1: 0x1d = 29**
328
329 **0**  -113dBm or less
330
331 **1**  -111dBm
332
333 **2...30** -109dBm... -53dBm
334
335 **31**   -51dBm or greater
336
337 **99**    Not known or not detectable
338
339 === 2.4.5  Soil PH ===
340
341 Get the PH content of the soil. The value range of the register is 300-1000(Decimal), divide this value by 100 to get the percentage of PH in the soil.
342
343 For example, if the data you get from the register is **__0x05 0xDC__**, the PH content in the soil is
344
345 **0229(H) = 549(D) /100 = 5.49.**
346
347 === 2.4.6  Soil Temperature ===
348
349 Get the temperature in the soil. The value range of the register is -4000 - +800(Decimal), divide this value by 100 to get the temperature in the soil. For example, if the data you get from the register is **__0x09 0xEC__**, the temperature content in the soil is
350
351 **Example**:
352
353 If payload is 0105H: ((0x0105 & 0x8000)>>15 === 0),temp = 0105(H)/10 = 26.1 °C
354
355 If payload is FF7EH: ((FF7E & 0x8000)>>15 ===1),temp = (FF7E(H)-FFFF(H))/10 = -12.9 °C
356
357 === 2.4.7  Timestamp ===
358
359 Time stamp : 0x6315537b =1662342011
360
361 Convert Unix timestamp to time 2022-9-5 9:40:11.
362
363 === 2.4.8  Digital Interrupt ===
364
365 Digital Interrupt refers to pin **GPIO_EXTI**, and there are different trigger methods. When there is a trigger, the NSPH01 will send a packet to the server.
366
367 The command is:
368
369 **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]])**.**
370
371 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.
372
373 Example:
374
375 0x(00): Normal uplink packet.
376
377 0x(01): Interrupt Uplink Packet.
378
379 === 2.4.9  ​+5V Output ===
380
381 NSPH01 will enable +5V output before all sampling and disable the +5v after all sampling. 
382
383 The 5V output time can be controlled by AT Command.
384
385 **AT+5VT=1000**
386
387 Means set 5V valid time to have 1000ms. So the real 5V output will actually have 1000ms + sampling time for other sensors.** **
388
389
390 == 2.5  Downlink Payload ==
391
392 By default, NSPH01 prints the downlink payload to console port.
393
394 (% style="text-align:center" %)
395 [[image:image-20220907154636-17.png]]
396
397
398
399
400
401
402
403 **Examples:**
404
405 * **Set TDC**
406
407 If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
408
409 Payload:    01 00 00 1E    TDC=30S
410
411 Payload:    01 00 00 3C    TDC=60S
412
413 * **Reset**
414
415 If payload = 0x04FF, it will reset the NSPH01
416
417 * **INTMOD**
418
419 Downlink Payload: 06000003, Set AT+INTMOD=3
420
421 == 2.6  ​LED Indicator ==
422
423 The NSPH01 has an internal LED which is to show the status of different state.
424
425 * When power on, NSPH01 will detect if sensor probe is connected, if probe detected, LED will blink four times. (no blinks in this step is no probe)
426 * Then the LED will be on for 1 second means device is boot normally.
427 * After NSPH01 join NB-IoT network. The LED will be ON for 3 seconds.
428 * For each uplink probe, LED will be on for 500ms.
429
430 == 2.7 Installation and Maintain ==
431
432 === 2.7.1 Before measurement ===
433
434 If the NSPH01 has more than 7 days not use or just clean the pH probe. User should put the probe inside pure water for more than 24 hours for activation. If no put in water, user need to put inside soil for more than 24 hours to ensure the measurement accuracy. 
435
436 === 2.7.2 Measurement ===
437
438 **Measurement the soil surface:**
439
440 [[image:image-20220907154700-18.png]] ​
441
442 Choose the proper measuring position. Split the surface soil according to the measured deep.
443
444 Put pure water, or rainwater to make the soil of measurement point to moist mud. Remove rocks or hard things.
445
446 Slowly insert the probe to the measure point. Don't use large force which will break the probe. Make sure not shake when inserting.
447
448 Put soil over the probe after insert. And start to measure.
449
450 **Measurement inside soil:**
451
452 Dig a hole with diameter > 20CM.
453
454 Insert the probe inside, method like measure the surface.
455
456 === 2.7.3 Maintain Probe ===
457
458 1. pH probe electrode is fragile and no strong. User must avoid strong force or hitting it.
459 1. After long time use (3~~ 6  months). The probe electrode needs to be clean; user can use high grade sandpaper to polish it or put in 5% hydrochloric acid for several minutes. After the metal probe looks like new, user can use pure water to wash it.
460 1. Probe reference electrode is also no strong, need to avoid strong force or hitting.
461 1. User should keep reference electrode wet while not use.
462 1. Avoid the probes to touch oily matter. Which will cause issue in accuracy.
463 1. The probe is IP68 can be put in water.
464
465 == 2.8 PH and Temperature alarm function ==
466
467 ➢ AT Command:
468
469 AT+ PHALARM=min,max
470
471 ² When min=3, and max≠0, Alarm higher than max
472
473 ² When min≠0, and max=0, Alarm lower than min
474
475 ² When min≠0 and max≠0, Alarm higher than max or lower than min
476
477 Example:
478
479 AT+ PHALARM =5,8 ~/~/ Alarm when PH lower than 5.
480
481 AT+ TEMPALARM=min,max
482
483 ² When min=0, and max≠0, Alarm higher than max
484
485 ² When min≠0, and max=0, Alarm lower than min
486
487 ² When min≠0 and max≠0, Alarm higher than max or lower than min
488
489 Example:
490
491 AT+ TEMPALARM=20,30 ~/~/ Alarm when temperature lower than 20.
492
493
494 == 2.9 Set the number of data to be uploaded and the recording time ==
495
496 ➢ AT Command:
497
498 AT+TR=900  ~/~/The unit is seconds, and the default is to record data once every 900 seconds.( The minimum can be set to 180 seconds)
499
500 AT+NOUD=8  ~/~/The device uploads 8 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
501
502
503 == 2.10 Read or Clear cached data ==
504
505 ➢ AT Command:
506
507 AT+CDP ~/~/ Read cached data
508
509 [[image:image-20220907154700-19.png]]
510
511
512 AT+CDP=0 ~/~/ Clear cached data
513
514
515 == 2.11 Calibration ==
516
517 User can do calibration for the probe. It is limited to use below pH buffer solution to calibrate: 4.00, 6.86, 9.18. When calibration, user need to clean the electrode and put the probe in the pH buffer solution to wait the value stable ( a new clean electrode might need max 24 hours to be stable).
518
519 After stable, user can use below command to calibrate.
520
521 [[image:image-20220907154700-20.png]] ​
522
523 == 2.12  ​Firmware Change Log ==
524
525 Download URL & Firmware Change log: [[https:~~/~~/www.dropbox.com/sh/1zmcakvbkf24f8x/AACmq2dZ3iRB9F1nVWeEB9Moa?dl=0>>url:https://www.dropbox.com/sh/1zmcakvbkf24f8x/AACmq2dZ3iRB9F1nVWeEB9Moa?dl=0]]
526
527 Upgrade Instruction: [[Upgrade Firmware>>path:#H5.1200BHowtoUpgradeFirmware]]
528
529 == 2.13  ​Battery Analysis ==
530
531 === 2.13.1  ​Battery Type ===
532
533 The NSPH01 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.
534
535 The battery is designed to last for several years depends on the actually use environment and update interval. 
536
537 The battery-related documents as below:
538
539 * [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
540 * [[Lithium-Thionyl Chloride Battery datasheet>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
541 * [[Lithium-ion Battery-Capacitor datasheet>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
542
543 [[image:image-20220907154700-21.png]] ​
544
545 === 2.13.2  Power consumption Analyze ===
546
547 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.
548
549 Instruction to use as below:
550
551 **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/]]
552
553 **Step 2: ** Open it and choose
554
555 * Product Model
556 * Uplink Interval
557 * Working Mode
558
559 And the Life expectation in difference case will be shown on the right.
560
561 (% style="text-align:center" %)
562 [[image:image-20220907154700-22.jpeg]]
563
564 ​
565
566 === 2.13.3  ​Battery Note ===
567
568 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.
569
570 === 2.13.4  Replace the battery ===
571
572 The default battery pack of NSPH01 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).
573
574 = 3. ​ Access NB-IoT Module =
575
576 Users can directly access the AT command set of the NB-IoT module.
577
578 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/]] 
579
580 (% style="text-align:center" %)
581 [[image:image-20220907154700-23.png]]
582
583 ​
584
585 = 4.  Using the AT Commands =
586
587 == 4.1  Access AT Commands ==
588
589 See this link for detail:  [[https:~~/~~/www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0>>url:https://www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0]]
590
591 AT+<CMD>?  : Help on <CMD>
592
593 AT+<CMD>         : Run <CMD>
594
595 AT+<CMD>=<value> : Set the value
596
597 AT+<CMD>=?  : Get the value
598
599 **General Commands**      
600
601 AT  : Attention       
602
603 AT?  : Short Help     
604
605 ATZ  : MCU Reset    
606
607 AT+TDC  : Application Data Transmission Interval
608
609 AT+CFG  : Print all configurations
610
611 AT+CFGMOD           : Working mode selection
612
613 AT+INTMOD            : Set the trigger interrupt mode
614
615 AT+5VT  : Set extend the time of 5V power  
616
617 AT+PRO  : Choose agreement
618
619 AT+RXDL  : Extend the sending and receiving time
620
621 AT+SERVADDR  : Server Address
622
623 AT+TR      : Get or Set record time"
624
625 AT+APN     : Get or set the APN
626
627 AT+FBAND   : Get or Set whether to automatically modify the frequency band
628
629 AT+DNSCFG  : Get or Set DNS Server
630
631 AT+GETSENSORVALUE   : Returns the current sensor measurement
632
633 AT+NOUD      : Get or Set the number of data to be uploaded
634
635 AT+CDP     : Read or Clear cached data
636
637 AT+TEMPALARM      : Get or Set alarm of temp
638
639 AT+PHALARM     : Get or Set alarm of PH
640
641 AT+ PHCAL  : calibrate PH value
642
643
644 **COAP Management**      
645
646 AT+URI            : Resource parameters
647
648 **UDP Management**
649
650 AT+CFM          : Upload confirmation mode (only valid for UDP)
651
652 **MQTT Management**
653
654 AT+CLIENT               : Get or Set MQTT client
655
656 AT+UNAME  : Get or Set MQTT Username
657
658 AT+PWD                  : Get or Set MQTT password
659
660 AT+PUBTOPIC  : Get or Set MQTT publish topic
661
662 AT+SUBTOPIC  : Get or Set MQTT subscription topic
663
664 **Information**          
665
666 AT+FDR  : Factory Data Reset
667
668 AT+PWORD  : Serial Access Password
669
670 = ​5.  FAQ =
671
672 == 5.1 ​ How to Upgrade Firmware ==
673
674 User can upgrade the firmware for 1) bug fix, 2) new feature release.
675
676 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>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H2.HardwareUpgradeMethodSupportList]]
677
678 **Notice, **NSPH01 **and **NSPH01 **share the same mother board. They use the same connection and method to update.**
679
680 == 5.2  Can I calibrate NSPH01 to different soil types? ==
681
682 NSPH01 is calibrated for saline-alkali soil and loamy soil. If users want to use it for other soil, they can calibrate the value in the IoT platform base on the value measured by saline-alkali soil and loamy soil. The formula can be found at [[this link>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/LSE01/Calibrate_to_other_Soil_20220605.pdf]].
683
684 = 6.  Trouble Shooting =
685
686 == 6.1  ​Connection problem when uploading firmware ==
687
688 **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]]
689
690 == 6.2  AT Command input doesn't work ==
691
692 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 **ENTER** while sending out the command. Some serial tool doesn't send **ENTER** while press the send key, user need to add ENTER in their string.
693
694 = 7. ​ Order Info =
695
696 Part Number**:** NSPH01
697
698 = 8.  Packing Info =
699
700 **Package Includes**:
701
702 * NSPH01 NB-IoT pH Sensor x 1
703 * External antenna x 1
704
705 **Dimension and weight**:
706
707 * Size: 195 x 125 x 55 mm
708 * Weight:   420g
709
710 = 9.  Support =
711
712 * 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.
713 * 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]]
714
715 ​