Last modified by Bei Jinggeng on 2024/08/02 17:52
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From version < 99.32 >
edited by Xiaoling
on 2024/01/18 13:36
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edited by Bei Jinggeng
on 2024/08/02 17:52
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1 -LSPH01-LoRaWAN Soil pH Sensor User Manual
1 +LSPH01 -- LoRaWAN Soil pH Sensor User Manual
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1 -XWiki.Xiaoling
1 +XWiki.Bei
Content
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462 462  == 2.7 Calibration ==
463 463  
464 464  
465 +(% style="color:blue" %)**Step1 :**(%%)** Clean probe**
466 +
467 +user can use high grade sandpaper to polish it or put in 5% hydrochloric acid for several minutes. After the metal probe looks new, users can clean it to remove hydrochloric acid or other liquids from the surface.
468 +
469 +(% style="color:blue" %)**Step2 :**(%%)** Immerse the sensor in ph buffer solution to make the sensor values stable**
470 +
465 465  (((
466 466  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).
473 +
474 +(% style="color:red" %)**Note: Only one ph buffer with one of the ph values needs to be calibrated during calibration. Wait for the sensor measurement value to be stable, it does not need to be the same as the ph marked by the ph buffer**
475 +
476 +
477 +(% style="color:blue" %)**Step3 :**(%%)** The numerically stable sensors were calibrated using commands**
467 467  )))
468 468  
469 469  (((
470 -After stable, user can use below command to calibrate.
481 + User can use below command to calibrate.
471 471  
472 472  (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
473 -|(% style="background-color:#4f81bd; color:white; width:115px" %)**pH buffer solution**|(% style="background-color:#4f81bd; color:white; width:145px" %)**AT Command to calibrate**|(% style="background-color:#4f81bd; color:white; width:150px" %)**Downlink Command**|(% style="background-color:#4f81bd; color:white; width:100px" %)**Read Cal Value**
484 +|(% style="background-color:#4f81bd; color:white; width:120px" %)**pH buffer solution**|(% style="background-color:#4f81bd; color:white; width:150px" %)**AT Command to calibrate**|(% style="background-color:#4f81bd; color:white; width:145px" %)**Downlink Command**|(% style="background-color:#4f81bd; color:white; width:95px" %)**Read Cal Value**
474 474  |(% style="width:149px" %)4.00|(% style="width:197px" %)AT+PHCAL=4|(% style="width:206px" %)(((
475 475  0x13 04
476 476  Reply with Calibrate payload
... ... @@ -495,13 +495,25 @@
495 495  )))
496 496  )))
497 497  
509 +To use the AT COMMAND, refer to this link:
498 498  
511 +* AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
512 +
513 +* AT Command via UART Connection : See [[UART Connection>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H2.3UARTConnectionforSN50v3basemotherboard]].
514 +
515 +To use Downlink, take TTN as an example, please refer to this link:
516 +
517 +* LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>url:http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
518 +
519 +When the command is successfully used, the node sends a uplink.
520 +This is the payload for uplink
521 +
499 499  (% style="color:#037691" %)**Calibration Payload**
500 500  
501 501  (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
502 502  |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
503 503  **Size(bytes)**
504 -)))|=(% style="width: 100px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 100px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 100px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**7**|=(% style="width:90px;background-color:#4F81BD;color:white" %)**1**
527 +)))|=(% style="width: 100px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 100px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 100px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**7**|=(% style="width: 90px;background-color:#4F81BD;color:white" %)**1**
505 505  |Value|(((
506 506  PH4 Calibrate value
507 507  )))|PH6.86 Calibrate value|(((
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521 521  
522 522  * Reply to non-confirmed packet: 14 00
523 523  
547 +(% style="color:blue" %)**Step4 : **(%%)**After the calibration is completed, its measurement results in this ph buffer solution should be consistent with the numerical value of the command used in the calibration.**
548 +
549 +Examples:
550 +After using the command AT+PH=9 in 9.18ph buffer
551 +The readout returned by the sensor in 9.18ph buffer should be pH=9
552 +
553 +
524 524  == 2.8 Frequency Plans ==
525 525  
526 526  
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1214 1214  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.
1215 1215  
1216 1216  
1247 +== 7.2 Possible reasons why the device is unresponsive： ==
1248 +
1249 +
1250 +​1. Check whether the battery voltage is lower than 2.8V
1251 +2. Check whether the jumper of the device is correctly connected
1252 +
1253 +[[image:image-20240330174400-2.png]]
1254 +3. Check whether the switch here of the device is at the ISP（The switch can operate normally only when it is in RUN）
1255 +
1256 +[[image:image-20240330174406-3.png]]
1257 +​
1258 +
1259 +== 7.3 The node cannot read the sensor data ==
1260 +
1261 +This may be caused by a software firmware(≤1.1.6 version) bug, which we fixed in the latest firmware (>1.0.0 version)
1262 +
1263 +The user can fix this problem via upgrade firmware.
1264 +
1265 +
1266 +By default, The latest firmware value of POWERIC is 1, while the 3322 version requires POWERIC to be set to 0 in order to function properly
1267 +
1268 +
1269 +* **//1. Check if the hardware version is 3322//**
1270 +
1271 +If the sensor hardware version is 3322 or earlier, the user can change the POWERIC value to 0 after a firmware upgrade using one of the following methods
1272 +
1273 +**a. Using AT command**
1274 +
1275 +(% class="box infomessage" %)
1276 +(((
1277 +AT+POWERIC=0.
1278 +)))
1279 +
1280 +
1281 +**b. Using Downlink**
1282 +
1283 +(% class="box infomessage" %)
1284 +(((
1285 +FF 00(AT+POWERIC=0).
1286 +)))
1287 +
1288 +
1289 +[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/image-20240531090837-1.png?rev=1.1||alt="image-20240531090837-1.png"]]
1290 +
1291 +
1292 +Please check your hardware production date
1293 +
1294 +The first two digits are the week of the year, and the last two digits are the year.
1295 +
1296 +The number 3322 is the first batch we changed the power IC.
1297 +
1298 +
1217 1217  = 8. Order Info =
1218 1218  
1219 1219  
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