Last modified by Bei Jinggeng on 2024/03/30 17:53
<
From version < 33.1 >
edited by David Huang
on 2022/09/07 15:47
To version < 56.13 >
edited by Xiaoling
on 2023/05/23 16:43
>
Change comment: There is no comment for this version

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1 -XWiki.David
1 +XWiki.Xiaoling
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1 1  (% style="text-align:center" %)
2 -[[image:)YK]Y_LZJIO]J2~~VA}OQJM2.png]]
2 +[[image:)YK]Y_LZJIO]J2~~VA}OQJM2.png||height="442" width="410"]]
3 3  
4 -= **1. Introduction** =
4 +**Table of Contents:**
5 5  
6 -== **1.1 ​What is NSPH01 Soil pH Sensor** ==
6 +{{toc/}}
7 7  
8 -The Dragino NSPH01 is a **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.
9 9  
10 -NSPH01 probe is made by Solid AgCl reference electrode and Pure metal pH sensitive electrode. It can detect soil's** pH **with high accuracy and stable value. The NSPH01 probe can be buried into soil for long time use.
11 11  
10 += 1.  Introduction =
11 +
12 +== 1.1 ​ What is NSPH01 Soil pH Sensor ==
13 +
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 +
19 +(((
20 +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.
21 +)))
22 +
23 +(((
12 12  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.
13 -\\NSPH01 supports different uplink methods include **TCP,MQTT,UDP and CoAP  **for different application requirement.
14 -\\NSPH01 is powered by  **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)
15 -\\To use NSPH01, user needs to check if there is NB-IoT coverage in local area and with the bands NSPH01 supports. If the local operate support it, user needs to get a **NB-IoT SIM card** from local operator and install NSPH01 to get NB-IoT network connection.
25 +)))
16 16  
27 +(((
28 +NSPH01 supports different uplink methods include (% style="color:blue" %)**TCP,MQTT,UDP and CoAP  **(%%)for different application requirement.
29 +)))
30 +
31 +(((
32 +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)
33 +)))
34 +
35 +(((
36 +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.
37 +)))
38 +
39 +
40 +[[image:image-20220907153151-1.png]]
41 +
42 +
43 +[[image:M_K`YF9`CAYAE\@}3T]FHT$9.png]]
44 +
45 +
46 +== 1.2  Features ==
47 +
48 +
49 +* NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
50 +* Monitor soil pH with temperature compensation.
51 +* Monitor soil temperature
52 +* pH and Temperature alarm function
53 +* Monitor Battery Level
54 +* Support pH calibration by end user
55 +* Uplink on periodically
56 +* Downlink to change configure
57 +* IP66 Waterproof Enclosure
58 +* IP68 rate for the Sensor Probe
59 +* Ultra-Low Power consumption
60 +* AT Commands to change parameters
61 +* Micro SIM card slot
62 +* 8500mAh Battery for long term use
63 +
64 +== 1.3  Specification ==
65 +
66 +
67 +(% style="color:#037691" %)**Common DC Characteristics:**
68 +
69 +* Supply Voltage: 2.1v ~~ 3.6v
70 +* Operating Temperature: -40 ~~ 85°C
71 +
72 +(% style="color:#037691" %)**NB-IoT Spec:**
73 +
74 +* B1 @H-FDD: 2100MHz
75 +* B3 @H-FDD: 1800MHz
76 +* B8 @H-FDD: 900MHz
77 +* B5 @H-FDD: 850MHz
78 +* B20 @H-FDD: 800MHz
79 +* B28 @H-FDD: 700MHz
80 +
81 +== 1.4  Probe Specification ==
82 +
83 +
84 +(% style="color:#037691" %)**Soil pH:**
85 +
86 +* Range: 3 ~~ 10 pH
87 +* Resolution: 0.01 pH
88 +* Accuracy: ±2% under (0~~50 ℃, Accuracy will poor under 0 due to frozen)
89 +* Temperature Compensation Range: 0 ~~ 50℃
90 +* IP68 Protection
91 +* Length: 3.5 meters
92 +
93 +(% style="color:#037691" %)**Soil Temperature:**
94 +
95 +* Range -40℃～85℃
96 +* Resolution: 0.1℃
97 +* Accuracy: <±0.5℃(-10℃～40℃)，<±0.8℃ (others)
98 +* IP68 Protection
99 +* Length: 3.5 meters
100 +
101 +== 1.5  ​Applications ==
102 +
103 +
104 +* Smart Agriculture
105 +
106 +== 1.6  Pin mapping and power on ==
107 +
108 +
109 +[[image:image-20220907153300-2.png]]
110 +
111 +
112 += 2.  Use NSPH01 to communicate with IoT Server =
113 +
114 +== 2.1  How it works ==
115 +
116 +
117 +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.
118 +
119 +The diagram below shows the working flow in default firmware of NSPH01:
120 +
121 +
122 +[[image:image-20220907153416-3.png]]
123 +
124 +
125 +== 2.2 ​ Configure the NSPH01 ==
126 +
127 +=== 2.2.1 Test Requirement ===
128 +
129 +
130 +To use NSPH01 in the field, make sure meet below requirements:
131 +
132 +* Your local operator has already distributed a NB-IoT Network there.
133 +* The local NB-IoT network used the band that NSPH01 supports.
134 +* Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
135 +
136 +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.
137 +
138 +
139 +[[image:image-20220907153445-4.png]]
140 +
141 +
142 +=== 2.2.2 Insert SIM card ===
143 +
144 +
145 +User need to take out the NB-IoT module and insert the SIM card like below. ((% style="color:red" %) Pay attention to the direction(%%))
146 +
147 +
148 +[[image:image-20220907153505-5.png]]
149 +
150 +
151 +=== 2.2.3 Connect USB – TTL to NSPH01 to configure it ===
152 +
153 +
154 +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.
155 +
156 +
157 +(% style="color:blue" %)**Connection:**
158 +
159 +**~ (% style="background-color:yellow" %) USB TTL GND <~-~-~-~->  GND(%%)**
160 +
161 +**~ (% style="background-color:yellow" %) USB TTL TXD  <~-~-~-~->  UART_RXD(%%)**
162 +
163 +**~ (% style="background-color:yellow" %) USB TTL RXD  <~-~-~-~->  UART_TXD(%%)**
164 +
165 +
166 +In the PC, use below serial tool settings:
167 +
168 +* Baud:  (% style="color:green" %)**9600**
169 +* Data bits:**  (% style="color:green" %)8(%%)**
170 +* Stop bits:  (% style="color:green" %)**1**
171 +* Parity:  (% style="color:green" %)**None**
172 +* Flow Control: (% style="color:green" %)**None**
173 +
174 +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.
175 +
176 +
177 +[[image:image-20220912144017-1.png]]
178 +
179 +
180 +(% 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]]
181 +
182 +
183 +=== 2.2.4 Use CoAP protocol to uplink data ===
184 +
185 +
186 +(% 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/]]
187 +
188 +
189 +(% style="color:blue" %)**Use below commands:**
190 +
191 +* (% style="color:#037691" %)**AT+PRO=1**                         (%%) ~/~/  Set to use CoAP protocol to uplink
192 +* (% style="color:#037691" %)**AT+SERVADDR=120.24.4.116,5683   ** (%%) ~/~/  to set CoAP server address and port
193 +* (% style="color:#037691" %)**AT+URI=5,11,"mqtt",11,"coap",12,"0",15,"c=text1",23,"0" ** (%%) ~/~/  Set COAP resource path
194 +
195 +For parameter description, please refer to AT command set
196 +
197 +
198 +[[image:image-20220907153551-7.png||height="502" width="740"]]
199 +
200 +
201 +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.
202 +
203 +
204 +[[image:image-20220907153612-8.png||height="529" width="729"]]
205 +
206 +
207 +=== 2.2.5 Use UDP protocol to uplink data(Default protocol) ===
208 +
209 +
210 +This feature is supported since firmware version v1.0.1
211 +
212 +* (% style="color:blue" %)**AT+PRO=2   ** (%%) ~/~/  Set to use UDP protocol to uplink
213 +* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5601   ** (%%) ~/~/  to set UDP server address and port
214 +* (% style="color:blue" %)**AT+CFM=1       ** (%%) ~/~/  If the server does not respond, this command is unnecessar
215 +
216 +[[image:image-20220907153643-9.png||height="401" width="734"]]
217 +
218 +
219 +[[image:image-20220907153703-10.png||height="309" width="738"]]
220 +
221 +
222 +=== 2.2.6 Use MQTT protocol to uplink data ===
223 +
224 +
225 +This feature is supported since firmware version v110
226 +
227 +* (% style="color:blue" %)**AT+PRO=3   ** (%%) ~/~/ Set to use MQTT protocol to uplink
228 +* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,1883   ** (%%) ~/~/ Set MQTT server address and port
229 +* (% style="color:blue" %)**AT+CLIENT=CLIENT       ** (%%) ~/~/ Set up the CLIENT of MQTT
230 +* (% style="color:blue" %)**AT+UNAME=UNAME                               **(%%)~/~/ Set the username of MQTT
231 +* (% style="color:blue" %)**AT+PWD=PWD                                        **(%%)~/~/ Set the password of MQTT
232 +* (% style="color:blue" %)**AT+PUBTOPIC=NSE01_PUB                    **(%%)~/~/ Set the sending topic of MQTT
233 +* (% style="color:blue" %)**AT+SUBTOPIC=NSE01_SUB          ** (%%) ~/~/ Set the subscription topic of MQTT
234 +
235 +[[image:image-20220907153739-11.png||height="491" width="764"]]
236 +
237 +
238 +[[image:image-20220907153751-12.png||height="555" width="769"]]
239 +
240 +
241 +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.
242 +
243 +
244 +=== 2.2.7 Use TCP protocol to uplink data ===
245 +
246 +
247 +This feature is supported since firmware version v110
248 +
249 +* (% style="color:blue" %)**AT+PRO=4   ** (%%) ~/~/ Set to use TCP protocol to uplink
250 +* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5600   ** (%%) ~/~/ to set TCP server address and port
251 +
252 +[[image:image-20220907153818-13.png||height="486" width="668"]]
253 +
254 +
255 +[[image:image-20220907153827-14.png||height="236" width="684"]]
256 +
257 +
258 +=== 2.2.8 Change Update Interval ===
259 +
260 +
261 +Users can use the below command to change the **uplink interval**.
262 +
263 +* (% style="color:blue" %)**AT+TDC=7200      ** (%%) ~/~/ Set Update Interval to 7200s (2 hour)
264 +
265 +(% 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).**
266 +
267 +
268 +== 2.3  Uplink Payload ==
269 +
270 +
271 +In this mode, uplink payload includes 87 bytes in total by default.
272 +
273 +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.
274 +
275 +(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:520px" %)
276 +|(% style="width:50px;background-color:#D9E2F3;color:#0070C0" %)**Size(bytes)**|(% style="width:40px;background-color:#D9E2F3;color:#0070C0" %)**8**|(% style="width:20px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:25px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:60px;background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="width:20px;background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="width:40px;background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="width:40px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:50px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:50px;background-color:#D9E2F3;color:#0070C0" %)**4**|(% style="width:50px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:35px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:40px;background-color:#D9E2F3;color:#0070C0" %)**4**
277 +|(% style="width:96px" %)**Value**|(% style="width:83px" %)Device ID|(% style="width:44px" %)Ver|(% style="width:42px" %)BAT|(% style="width:124px" %)Signal Strength|(% style="width:57px" %)MOD|(% style="width:80px" %)Interrupt|(% style="width:69px" %)Soil PH|(% style="width:134px" %)Soil Temperature|(% style="width:98px" %)Time stamp|(% style="width:134px" %)Soil Temperature|(% style="width:68px" %)Soil PH|(% style="width:125px" %)Time stamp  .....
278 +
279 +If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NSPH01 uplink data.
280 +
281 +[[image:image-20220907153902-15.png||height="581" width="804"]]
282 +
283 +
284 +(((
285 +The payload is ASCII string, representative same HEX:
286 +)))
287 +
288 +(((
17 17  
290 +)))
291 +
292 +(((
293 +**0x (% style="color:red" %)__f868411056754138__  (% style="color:blue" %)__0064 __ (% style="color:green" %)__0c78__  (% style="color:#00b0f0" %)__17__  (% style="color:#7030a0" %)__01__  (% style="color:#d60093" %)__00__  (% style="color:#a14d07" %)__0225 __ (% style="color:#0020b0" %) __010b__  (% style="color:#420042" %)__6315537b__  (% style="color:#663300" %)//__010b0226631550fb__  __010e022663154d77  01110225631549f1  011502246315466b  01190223631542e5  011d022163153f62  011e022163153bde 011e022163153859__//(%%)**
294 +)))
295 +
296 +(((
297 +
298 +
299 +**where:**
300 +)))
301 +
302 +* (% style="color:#037691" %)**Device ID:**(%%)** **0xf868411056754138 = f868411056754138
303 +
304 +* (% style="color:#037691" %)**Version:**  (%%) 0x0064=100=1.0.0
305 +
306 +* (% style="color:#037691" %)**BAT:**   (%%) 0x0c78 = 3192 mV = 3.192V
307 +
308 +* (% style="color:#037691" %)**Singal:** (%%)0x17 = 23
309 +
310 +* (% style="color:#037691" %)**Mod:** (%%) 0x01 = 1
311 +
312 +* (% style="color:#037691" %)**Interrupt:**(%%) 0x00= 0
313 +
314 +* (% style="color:#037691" %)**Soil PH:** (%%) 0x0225= 549 = 5.49
315 +
316 +* (% style="color:#037691" %)**Soil Temperature:**(%%) 0x010b =267=26.7 °C
317 +
318 +* (% style="color:#037691" %)**Time stamp :**   (%%) 0x6315537b =1662342011  ([[Unix Epoch Time>>url:http://www.epochconverter.com/]])
319 +
320 +* (% style="color:#037691" %)**Soil Temperature,Soil PH,Time stamp : **(%%) 010b0226631550fb
321 +
322 +* (% style="color:#037691" %)**8 sets of recorded data:**(%%) Temperature,Soil PH,Time stamp :  010e022663154d77,.......
323 +
324 +== 2.4  Payload Explanation and Sensor Interface ==
325 +
326 +=== 2.4.1  Device ID ===
327 +
328 +
329 +By default, the Device ID equal to the last 15 bits of IMEI.
330 +
331 +User can use (% style="color:blue" %)**AT+DEUI** (%%)to set Device ID
332 +
333 +
334 +**Example:**
335 +
336 +AT+DEUI=868411056754138
337 +
338 +The Device ID is stored in a none-erase area, Upgrade the firmware or run AT+FDR won't erase Device ID.
339 +
340 +
341 +=== 2.4.2  Version Info ===
342 +
343 +
344 +Specify the software version: 0x64=100, means firmware version 1.00.
345 +
346 +For example: 0x00 64 : this device is NSPH01 with firmware version 1.0.0.
347 +
348 +
349 +=== 2.4.3  Battery Info ===
350 +
351 +
352 +Check the battery voltage for NSPH01.
353 +
354 +Ex1: 0x0B45 = 2885mV
355 +
356 +Ex2: 0x0B49 = 2889mV
357 +
358 +
359 +=== 2.4.4  Signal Strength ===
360 +
361 +
362 +NB-IoT Network signal Strength.
363 +
364 +**Ex1: 0x1d = 29**
365 +
366 +**0**  -113dBm or less
367 +
368 +**1**  -111dBm
369 +
370 +**2...30** -109dBm... -53dBm
371 +
372 +**31**   -51dBm or greater
373 +
374 +**99**    Not known or not detectable
375 +
376 +
377 +=== 2.4.5  Soil PH ===
378 +
379 +
380 +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.
381 +
382 +For example, if the data you get from the register is (% style="color:blue" %)**__0x05 0xDC__**(%%), the PH content in the soil is
383 +
384 +(% style="color:blue" %)**0229(H) = 549(D) /100 = 5.49.**
385 +
386 +
387 +=== 2.4.6  Soil Temperature ===
388 +
389 +
390 +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 (% style="color:blue" %)**__0x09 0xEC__**(%%), the temperature content in the soil is
391 +
392 +
393 +**Example**:
394 +
395 +If payload is 0105H: ((0x0105 & 0x8000)>>15 === 0),temp = 0105(H)/10 = 26.1 °C
396 +
397 +If payload is FF7EH: ((FF7E & 0x8000)>>15 ===1),temp = (FF7E(H)-FFFF(H))/10 = -12.9 °C
398 +
399 +
400 +=== 2.4.7  Timestamp ===
401 +
402 +
403 +Time stamp : 0x6315537b =1662342011
404 +
405 +Convert Unix timestamp to time 2022-9-5 9:40:11.
406 +
407 +
408 +=== 2.4.8  Digital Interrupt ===
409 +
410 +
411 +Digital Interrupt refers to pin (% style="color:blue" %)**GPIO_EXTI**(%%), and there are different trigger methods. When there is a trigger, the NSPH01 will send a packet to the server.
412 +
413 +The command is:
414 +
415 +(% 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]])**.**
416 +
417 +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.
418 +
419 +
420 +**Example:**
421 +
422 +0x(00): Normal uplink packet.
423 +
424 +0x(01): Interrupt Uplink Packet.
425 +
426 +
427 +=== 2.4.9  ​+5V Output ===
428 +
429 +
430 +NSPH01 will enable +5V output before all sampling and disable the +5v after all sampling. 
431 +
432 +The 5V output time can be controlled by AT Command.
433 +
434 +(% style="color:blue" %)**AT+5VT=1000**
435 +
436 +Means set 5V valid time to have 1000ms. So the real 5V output will actually have 1000ms + sampling time for other sensors.** **
437 +
438 +
439 +== 2.5  Downlink Payload ==
440 +
441 +
442 +By default, NSPH01 prints the downlink payload to console port.
443 +
444 +[[image:image-20220907154636-17.png]]
445 +
446 +
447 +(% style="color:blue" %)**Examples:**
448 +
449 +* (% style="color:#037691" %)** Set TDC**
450 +
451 +If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
452 +
453 +Payload:    01 00 00 1E    TDC=30S
454 +
455 +Payload:    01 00 00 3C    TDC=60S
456 +
457 +* (% style="color:#037691" %)** Reset**
458 +
459 +If payload = 0x04FF, it will reset the NSPH01
460 +
461 +* (% style="color:#037691" %)** INTMOD**
462 +
463 +Downlink Payload: 06000003, Set AT+INTMOD=3
464 +
465 +
466 +== 2.6  ​LED Indicator ==
467 +
468 +
469 +The NSPH01 has an internal LED which is to show the status of different state.
470 +
471 +* 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)
472 +* Then the LED will be on for 1 second means device is boot normally.
473 +* After NSPH01 join NB-IoT network. The LED will be ON for 3 seconds.
474 +* For each uplink probe, LED will be on for 500ms.
475 +
476 +== 2.7  Installation and Maintain ==
477 +
478 +=== 2.7.1  Before measurement ===
479 +
480 +
481 +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. 
482 +
483 +
484 +=== 2.7.2  Measurement ===
485 +
486 +
487 +(% style="color:#037691" %)**Measurement the soil surface:**
488 +
489 +
490 +[[image:image-20220907154700-18.png]] ​
491 +
492 +Choose the proper measuring position. Split the surface soil according to the measured deep.
493 +
494 +Put pure water, or rainwater to make the soil of measurement point to moist mud. Remove rocks or hard things.
495 +
496 +Slowly insert the probe to the measure point. Don't use large force which will break the probe. Make sure not shake when inserting.
497 +
498 +Put soil over the probe after insert. And start to measure.
499 +
500 +
501 +(% style="color:#037691" %)**Measurement inside soil:**
502 +
503 +Dig a hole with diameter > 20CM.
504 +
505 +Insert the probe inside, method like measure the surface.
506 +
507 +
508 +=== 2.7.3  Maintain Probe ===
509 +
510 +
511 +1. pH probe electrode is fragile and no strong. User must avoid strong force or hitting it.
512 +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.
513 +1. Probe reference electrode is also no strong, need to avoid strong force or hitting.
514 +1. User should keep reference electrode wet while not use.
515 +1. Avoid the probes to touch oily matter. Which will cause issue in accuracy.
516 +1. The probe is IP68 can be put in water.
517 +
518 +== 2.8  PH and Temperature alarm function ==
519 +
520 +
521 +(% style="color:#037691" %)**➢ AT Command:**
522 +
523 +(% style="color:blue" %)**AT+ PHALARM=min,max**
524 +
525 +² When min=3, and max≠0, Alarm higher than max
526 +
527 +² When min≠0, and max=0, Alarm lower than min
528 +
529 +² When min≠0 and max≠0, Alarm higher than max or lower than min
530 +
531 +
532 +(% style="color:blue" %)**Example:**
533 +
534 +AT+ PHALARM =5,8  ~/~/ Alarm when PH lower than 5.
535 +
536 +AT+ TEMPALARM=min,max
537 +
538 +² When min=0, and max≠0, Alarm higher than max
539 +
540 +² When min≠0, and max=0, Alarm lower than min
541 +
542 +² When min≠0 and max≠0, Alarm higher than max or lower than min
543 +
544 +
545 +(% style="color:blue" %)**Example:**
546 +
547 +AT+ TEMPALARM=20,30  ~/~/ Alarm when temperature lower than 20.
548 +
549 +
550 +== 2.9  Set the number of data to be uploaded and the recording time ==
551 +
552 +
553 +(% style="color:#037691" %)**➢ AT Command:**
554 +
555 +* (% style="color:blue" %)**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)
556 +* (% style="color:blue" %)**AT+NOUD=8**     (%%) ~/~/  The device uploads 8 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
557 +
558 + The diagram below explains the relationship between TR, NOUD, and TDC more clearly**:**
559 +
560 +[[image:image-20221009000933-1.png||height="750" width="1043"]]
561 +
562 +
563 +== 2.10  Read or Clear cached data ==
564 +
565 +
566 +(% style="color:#037691" %)**➢ AT Command:**
567 +
568 +* (% style="color:blue" %)**AT+CDP**        (%%) ~/~/  Read cached data
569 +* (% style="color:blue" %)**AT+CDP=0**    (%%) ~/~/  Clear cached data
570 +
571 +[[image:image-20220907154700-19.png]]
572 +
573 +
574 +== 2.11  Calibration ==
575 +
576 +
577 +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).
578 +
579 +After stable, user can use below command to calibrate.
580 +
581 +
582 +[[image:image-20220907154700-20.png]] ​
583 +
584 +
585 +== 2.12  ​Firmware Change Log ==
586 +
587 +
588 +Download URL & Firmware Change log: [[https:~~/~~/www.dropbox.com/sh/1tv07fro2pvjqj8/AAD-2wbfGfluTZfh38fQqdA_a?dl=0>>https://www.dropbox.com/sh/1tv07fro2pvjqj8/AAD-2wbfGfluTZfh38fQqdA_a?dl=0]]
589 +
590 +Upgrade Instruction: [[Upgrade Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
591 +
592 +
593 +== 2.13 Battery & Power Consumption ==
594 +
595 +
596 +NSPH01 uses ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
597 +
598 +[[**Battery Info & Power Consumption Analyze**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
599 +
600 +
601 += 3. ​ Access NB-IoT Module =
602 +
603 +
604 +Users can directly access the AT command set of the NB-IoT module.
605 +
606 +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/]] 
607 +
608 +
609 +[[image:image-20220907154700-23.png]]
610 +
611 +​
612 +
613 += 4.  Using the AT Commands =
614 +
615 +== 4.1  Access AT Commands ==
616 +
617 +
618 +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]]
619 +
620 +AT+<CMD>?  : Help on <CMD>
621 +
622 +AT+<CMD>         : Run <CMD>
623 +
624 +AT+<CMD>=<value> : Set the value
625 +
626 +AT+<CMD>=?  : Get the value
627 +
628 +
629 +(% style="color:#037691" %)**General Commands**      
630 +
631 +AT  : Attention       
632 +
633 +AT?  : Short Help     
634 +
635 +ATZ  : MCU Reset    
636 +
637 +AT+TDC  : Application Data Transmission Interval
638 +
639 +AT+CFG  : Print all configurations
640 +
641 +AT+CFGMOD           : Working mode selection
642 +
643 +AT+INTMOD            : Set the trigger interrupt mode
644 +
645 +AT+5VT  : Set extend the time of 5V power  
646 +
647 +AT+PRO  : Choose agreement
648 +
649 +AT+RXDL  : Extend the sending and receiving time
650 +
651 +AT+SERVADDR  : Server Address
652 +
653 +AT+TR      : Get or Set record time"
654 +
655 +AT+APN     : Get or set the APN
656 +
657 +AT+FBAND   : Get or Set whether to automatically modify the frequency band
658 +
659 +AT+DNSCFG  : Get or Set DNS Server
660 +
661 +AT+GETSENSORVALUE   : Returns the current sensor measurement
662 +
663 +AT+NOUD      : Get or Set the number of data to be uploaded
664 +
665 +AT+CDP     : Read or Clear cached data
666 +
667 +AT+TEMPALARM      : Get or Set alarm of temp
668 +
669 +AT+PHALARM     : Get or Set alarm of PH
670 +
671 +AT+ PHCAL  : calibrate PH value
672 +
673 +
674 +(% style="color:#037691" %)**COAP Management**      
675 +
676 +AT+URI            : Resource parameters
677 +
678 +
679 +(% style="color:#037691" %)**UDP Management**
680 +
681 +AT+CFM          : Upload confirmation mode (only valid for UDP)
682 +
683 +
684 +(% style="color:#037691" %)**MQTT Management**
685 +
686 +AT+CLIENT               : Get or Set MQTT client
687 +
688 +AT+UNAME  : Get or Set MQTT Username
689 +
690 +AT+PWD                  : Get or Set MQTT password
691 +
692 +AT+PUBTOPIC  : Get or Set MQTT publish topic
693 +
694 +AT+SUBTOPIC  : Get or Set MQTT subscription topic
695 +
696 +
697 +(% style="color:#037691" %)**Information**          
698 +
699 +AT+FDR  : Factory Data Reset
700 +
701 +AT+PWORD  : Serial Access Password
702 +
703 +
704 += ​5.  FAQ =
705 +
706 +== 5.1 ​ How to Upgrade Firmware ==
707 +
708 +
709 +User can upgrade the firmware for 1) bug fix, 2) new feature release.
710 +
711 +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]]
712 +
713 +(% style="color:red" %)**Notice, NSPH01 and LSPH01 share the same mother board. They use the same connection and method to update.**
714 +
715 +
716 +== 5.2  Can I calibrate NSPH01 to different soil types? ==
717 +
718 +
719 +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]].
720 +
721 +
722 += 6.  Trouble Shooting =
723 +
724 +== 6.1  ​Connection problem when uploading firmware ==
725 +
726 +
727 +**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]]
728 +
729 +
730 +== 6.2  AT Command input doesn't work ==
731 +
732 +
733 +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.
734 +
735 +
736 +== 6.3 Not able to connect to NB-IoT network and keep showing "Signal Strength:99". ==
737 +
738 +
739 +This means sensor is trying to join the NB-IoT network but fail. Please see this link for **//[[trouble shooting for signal strenght:99>>doc:Main.CSQ\:99,99.WebHome]]//**.
740 +
741 +
742 += 7. ​ Order Info =
743 +
744 +
745 +Part Number**:** NSPH01
746 +
747 +
748 += 8.  Packing Info =
749 +
750 +
751 +**Package Includes**:
752 +
753 +* NSPH01 NB-IoT pH Sensor x 1
754 +* External antenna x 1
755 +
756 +**Dimension and weight**:
757 +
758 +* Device Size: cm
759 +* Device Weight: g
760 +* Package Size / pcs : cm
761 +* Weight / pcs : g
762 +
763 += 9.  Support =
764 +
765 +
766 +* 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.
767 +* 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]]
768 +
769 +​
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