LSPH01-LoRaWAN Soil pH Sensor User Manual

The Dragino LSPH01 is a (% style="color:#4f81bd" %)**LoRaWAN 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.

23

24

LSPH01 probe is made by Solid AgCl reference electrode and Pure metal pH sensitive electrode. It can detect soil's** (% style="color:#4f81bd" %)pH (%%)**with high accuracy and stable value. The LSPH01 probe can be buried into soil for long time use.

25

26

The LoRa wireless technology used in LSPH01 allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.

27

28

LSPH01 is powered by (% style="color:#4f81bd" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years.

29

30

Each LSPH01 is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.

31

32

33

[[image:1654580186518-415.png]]

== 1.2 Features ==

* LoRaWAN 1.0.3 Class A

40

* Ultra-low power consumption

41

* Monitor soil pH with temperature compensation.

42

* Monitor soil temperature

43

* Monitor Battery Level

44

* Support pH calibration by end user

45

* Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865

46

* AT Commands to change parameters

47

* Uplink on periodically

48

* Downlink to change configure

49

* IP66 Waterproof Enclosure

50

* IP68 rate for the Sensor Probe

51

* 8500mAh Battery for long term use

52

53

1.

54

11. Probe Specification

Soil pH:

* **Range: 3 ~~ 10 pH **

59

* **Resolution: 0.01 pH**

60

* **Accuracy: ±2% under (0~~50 ℃, Accuracy will poor under 0 due to frozen)**

61

* **Temperature Compensation Range: 0 ~~ 50℃**

* IP68 Protection

* Length: 3.5 meters

Soil Temperature:

* **Range** -40℃～8**5**℃

68

* **Resolution: 0.1℃**

69

* **Accuracy:** <±0.5℃(-10℃～40℃)，<±0.8℃ (others)

* IP68 Protection

* Length: 3.5 meters

*

*1. Applications

* Smart Agriculture

1.

11. Pin mapping and power on

79

80

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image003.png]]

1. Configure LSPH01 to connect to LoRaWAN network

87

11. How it works

88

89

The LSPH01 is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and power on the LSPH01. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.

90

91

92

In case you can’t set the OTAA keys in the LoRaWAN OTAA server, and you have to use the keys from the server, you can [[use AT Commands >>path:#_Using_the_AT]]to set the keys in the LSPH01.

1.

11. Quick guide to connect to LoRaWAN server (OTAA)

97

98

Following is an example for how to join the [[TTN v3 LoRaWAN Network>>url:https://console.cloud.thethings.network/]]. Below is the network structure; we use the [[LG308>>url:http://www.dragino.com/products/lora/item/140-lg308.html]] as a LoRaWAN gateway in this example.

99

100

101

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image002.png]]

102

103

104

The LG308 is already set to connected to [[TTN network >>url:https://console.cloud.thethings.network/]], so what we need to now is configure the TTN server.

105

106

107

**Step 1**: Create a device in TTN with the OTAA keys from LSPH01.

108

109

Each LSPH01 is shipped with a sticker with the default device EUI as below:

110

111

112

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image004.png]]

You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:

119

120

121

**Register the device**

122

123

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image005.png]]

124

125

126

**Add APP EUI and DEV EUI**

127

128

129

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image006.png]]

130

131

132

**Add APP EUI in the application**

133

134

135

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image007.png]]

**Add APP KEY**

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image008.png]]

141

142

143

**Step 2**: Power on LSPH01

144

145

146

Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).

|(((

)))

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image009.png]]

**Step 3:** The LSPH01 will auto join to the TTN network. After join success, it will start to upload messages to TTN and you can see the messages in the panel.

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image010.png]]

1.

11. Uplink Payload

LSPH01 will uplink payload via LoRaWAN with below payload format:

172

173

174

Uplink payload includes in total 11 bytes.

175

176

177

Normal uplink payload:

|(((

**Size**

**(bytes)**

)))|**2**|**2**|**2**|**2**|**1**|**1**|**1**

184

|**Value**|[[BAT>>path:#bat]]|(((

185

[[Temperature>>path:#DS18B20]]

186

187

[[( Optional )>>path:#DS18B20]]

188

)))|[[Soil pH>>path:#Soil_Nitrogen]]|[[Soil Temperature>>path:#Soil_Phosphorus]]|(((

189

[[Digital Interrupt>>path:#Int_pin]]

190

191

[[(Optional)>>path:#Int_pin]]

192

)))|Reserve|(((

193

[[Message>>path:#Message_Type]]

194

195

[[Type>>path:#Message_Type]]

)))

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image010.png]]

1.

11.

111. Battery Info

Check the battery voltage for LSPH01.

Ex1: 0x0B45 = 2885mV

Ex2: 0x0B49 = 2889mV

1.

11.

111. DS18B20 Temperature sensor

217

218

This is optional, user can connect external DS18B20 sensor to the [[+3.3v, 1-wire and GND pin>>path:#DS18B20]] . and this field will report temperature.

**Example**:

If payload is: 0105H: (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree

224

225

If payload is: FF3FH : (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.

1.

11.

111. Soil pH

Range: 0 ~~ 14 pH

Example:

**0x02B7(H) = 695(D) = 6.95pH**

1.

11.

111. Soil Temperature

Get Soil Temperature

**Example**:

If payload is: 0105H: (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree

250

251

If payload is: FF3FH : (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.

1.

11.

111. Interrupt Pin

This data field shows if this packet is generated by interrupt or not. [[Click here>>path:#Int_mod]] for the hardware and software set up.

Example:

0x00: Normal uplink packet.

265

266

0x01: Interrupt Uplink Packet.

1.

11.

111. Message Type

For a normal uplink payload, the message type is always 0x01.

Valid Message Type:

|Message Type Code|Description|Payload

279

|0x01|Normal Uplink|[[Normal Uplink Payload>>path:#Normal_Uplink]]

280

|0x02|Reply configures info|[[Configure Info Payload>>path:#Configure_Info_Payload]]

281

|0x03|Reply Calibration Info|[[Calibration Payload>>path:#Calibration_Payload]]

1.

11.

111. Decode payload in The Things Network

286

287

While using TTN network, you can add the payload format to decode the payload.

288

289

290

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image011.png]]

291

292

The payload decoder function for TTN is here:

293

294

LSPH01 TTN Payload Decoder: [[https:~~/~~/www.dragino.com/downloads/index.pHp?dir=LoRa_End_Node/LSPH01/Decoder/>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSNPK01/Decoder/]]

1.

11. Uplink Interval

The LSPH01 by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link:

301

302

[[http:~~/~~/wiki.dragino.com/index.pHp?title=End_Device_AT_Commands_and_Downlink_Commands#Change_Uplink_Interval>>url:http://wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands#Change_Uplink_Interval]]

1.

11. Show Data in DataCake IoT Server

308

309

[[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, once we have data in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps:

310

311

312

**Step 1**: Be sure that your device is programmed and properly connected to the network at this time.

313

314

**Step 2**: To configure the Application to forward data to DATACAKE you will need to add integration. To add the DATACAKE integration, perform the following steps:

315

316

317

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image012.png]]

318

319

320

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image013.png]]

321

322

323

Step 3: Create an account or log in Datacake.

324

325

Step 4: Create LSPH01 product.

326

327

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image014.png]]

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image015.png]]

332

333

334

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image016.png]]

335

336

337

Step 5: add payload decode

338

339

Download Datacake decoder from: [[https:~~/~~/www.dragino.com/downloads/index.pHp?dir=LoRa_End_Node/LSPH01/Decoder/>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSNPK01/Decoder/]]

340

341

342

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image017.png]]

343

344

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image018.png]]

345

346

347

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image019.png]]

348

349

350

After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.

351

352

353

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.png]]

1.

11. Installation and Maintain

361

111. Before measurement

362

363

If the LSPH01 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.

1.

11.

111. Measurement

**Measurement the soil surface**

371

372

373

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]] Choose the proper measuring position. Split the surface soil according to the measured deep.

374

375

376

Put pure water, or rainwater to make the soil of measurement point to moist mud. Remove rocks or hard things.

377

378

379

Slowly insert the probe to the measure point. Don’t use large force which will break the probe. Make sure not shake when inserting.

380

381

382

Put soil over the probe after insert. And start to measure.

383

384

385

**Measurement inside soil**

Dig a hole with diameter > 20CM.

390

391

392

Insert the probe inside, method like measure the surface.

1.

11.

111. Maintain Probe

1111. pH probe electrode is fragile and no strong. User must avoid strong force or hitting it.

399

1111. 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.

400

1111. Probe reference electrode is also no strong, need to avoid strong force or hitting.

401

1111. User should keep reference electrode wet while not use.

402

1111. Avoid the probes to touch oily matter. Which will cause issue in accuracy.

403

1111. The probe is IP68 can be put in water.

1.

11. Calibration

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).

411

412

413

**After stable, user can use below command to calibrate.**

414

415

416

|**pH buffer solution**|**AT Command to calibrate**|**Downlink Command**|**Read Cal Value**

417

|**4.00**|**AT+PHCAL=4**|(((

418

**0x13 04**

419

420

**Reply with Calibrate payload**

)))|(((

**AT+PHCAL=?**

**Example 41,61,91**

)))

|**6.86**|**AT+PHCAL=6**|(((

427

**0x13 06**

428

429

**Reply with Calibrate payload**

430

)))|**AT+PHCAL=?**

431

|**9.18**|**AT+PHCAL=9**|(((

432

**0x13 09**

433

434

**Reply with Calibrate payload**

435

)))|**AT+PHCAL=?**

436

|**Factory Default**|**AT+PHCAL=15**|(((

437

**0x13 15**

438

439

**Reply with Calibrate payload**

)))|(((

**AT+PHCAL=?**

**Example 151**

)))

Calibration Payload

|(((

**Size**

**(bytes)**

)))|**1**|**1**|**1**|**7**|**1**

|**Value**|(((

PH4

Calibrate value

)))|PH6.86 Calibrate value|(((

PH9.18

Calibrate value

)))|Reserve|(((

[[Message>>path:#Message_Type]]

463

464

[[Type>>path:#Message_Type]]

Always 0x03

)))

User can also send 0x14 downlink command to poll the current calibration payload.

470

471

472

|**Downlink Control Type**|**FPort**|**Type Code**|**Downlink payload size(bytes)**

473

|Get Calibration Version Info|Any|14|2

474

475

* Reply to the confirmation package: 14 01

476

* Reply to non-confirmed packet: 14 00

1.

11. Frequency Plans

The LSPH01 uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.

1.

11.

111. EU863-870 (EU868)

Uplink:

868.1 - SF7BW125 to SF12BW125

491

492

868.3 - SF7BW125 to SF12BW125 and SF7BW250

493

494

868.5 - SF7BW125 to SF12BW125

495

496

867.1 - SF7BW125 to SF12BW125

497

498

867.3 - SF7BW125 to SF12BW125

499

500

867.5 - SF7BW125 to SF12BW125

501

502

867.7 - SF7BW125 to SF12BW125

503

504

867.9 - SF7BW125 to SF12BW125

868.8 - FSK

Downlink:

Uplink channels 1-9 (RX1)

512

513

869.525 - SF9BW125 (RX2 downlink only)

1.

11.

111. US902-928(US915)

519

520

Used in USA, Canada and South America. Frequency band as per definition in LoRaWAN 1.0.3 Regional document.

521

522

523

To make sure the end node supports all sub band by default. In the OTAA Join process, the end node will use frequency 1 from sub-band1, then frequency 1 from sub-band2, then frequency 1 from sub-band3, etc to process the OTAA join.

524

525

526

After Join success, the end node will switch to the correct sub band by:

527

528

* Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band

529

* Use the Join successful sub-band if the server doesn’t include sub-band info in the OTAA Join Accept message ( TTN v2 doesn't include)

1.

11.

111. CN470-510 (CN470)

534

535

Used in China, Default use CHE=1

Uplink:

486.3 - SF7BW125 to SF12BW125

540

541

486.5 - SF7BW125 to SF12BW125

542

543

486.7 - SF7BW125 to SF12BW125

544

545

486.9 - SF7BW125 to SF12BW125

546

547

487.1 - SF7BW125 to SF12BW125

548

549

487.3 - SF7BW125 to SF12BW125

550

551

487.5 - SF7BW125 to SF12BW125

552

553

487.7 - SF7BW125 to SF12BW125

Downlink:

506.7 - SF7BW125 to SF12BW125

559

560

506.9 - SF7BW125 to SF12BW125

561

562

507.1 - SF7BW125 to SF12BW125

563

564

507.3 - SF7BW125 to SF12BW125

565

566

507.5 - SF7BW125 to SF12BW125

567

568

507.7 - SF7BW125 to SF12BW125

569

570

507.9 - SF7BW125 to SF12BW125

571

572

508.1 - SF7BW125 to SF12BW125

573

574

505.3 - SF12BW125 (RX2 downlink only)

1.

11.

111. AU915-928(AU915)

580

581

Frequency band as per definition in LoRaWAN 1.0.3 Regional document.

582

583

584

To make sure the end node supports all sub band by default. In the OTAA Join process, the end node will use frequency 1 from sub-band1, then frequency 1 from sub-band2, then frequency 1 from sub-band3, etc to process the OTAA join.

585

586

587

After Join success, the end node will switch to the correct sub band by:

588

589

* Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band

590

* Use the Join successful sub-band if the server doesn’t include sub-band info in the OTAA Join Accept message ( TTN v2 doesn't include)

1.

11.

111. AS920-923 & AS923-925 (AS923)

595

596

**Default Uplink channel:**

597

598

923.2 - SF7BW125 to SF10BW125

599

600

923.4 - SF7BW125 to SF10BW125

601

602

603

**Additional Uplink Channel**:

604

605

(OTAA mode, channel added by JoinAccept message)

606

607

**AS920~~AS923 for Japan, Malaysia, Singapore**:

608

609

922.2 - SF7BW125 to SF10BW125

610

611

922.4 - SF7BW125 to SF10BW125

612

613

922.6 - SF7BW125 to SF10BW125

614

615

922.8 - SF7BW125 to SF10BW125

616

617

923.0 - SF7BW125 to SF10BW125

618

619

922.0 - SF7BW125 to SF10BW125

620

621

622

**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:

623

624

923.6 - SF7BW125 to SF10BW125

625

626

923.8 - SF7BW125 to SF10BW125

627

628

924.0 - SF7BW125 to SF10BW125

629

630

924.2 - SF7BW125 to SF10BW125

631

632

924.4 - SF7BW125 to SF10BW125

633

634

924.6 - SF7BW125 to SF10BW125

**Downlink:**

Uplink channels 1-8 (RX1)

641

642

923.2 - SF10BW125 (RX2)

1.

11.

111. KR920-923 (KR920)

Default channel:

922.1 - SF7BW125 to SF12BW125

652

653

922.3 - SF7BW125 to SF12BW125

654

655

922.5 - SF7BW125 to SF12BW125

656

657

658

Uplink: (OTAA mode, channel added by JoinAccept message)

659

660

922.1 - SF7BW125 to SF12BW125

661

662

922.3 - SF7BW125 to SF12BW125

663

664

922.5 - SF7BW125 to SF12BW125

665

666

922.7 - SF7BW125 to SF12BW125

667

668

922.9 - SF7BW125 to SF12BW125

669

670

923.1 - SF7BW125 to SF12BW125

671

672

923.3 - SF7BW125 to SF12BW125

Downlink:

Uplink channels 1-7(RX1)

678

679

921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)

1.

11.

111. IN865-867 (IN865)

Uplink:

865.0625 - SF7BW125 to SF12BW125

689

690

865.4025 - SF7BW125 to SF12BW125

691

692

865.9850 - SF7BW125 to SF12BW125

Downlink:

Uplink channels 1-3 (RX1)

698

699

866.550 - SF10BW125 (RX2)

1.

11. LED Indicator

The LSPH01 has an internal LED which is to show the status of different state.

706

707

708

* The sensor is detected when the device is turned on, and it will flash 4 times quickly when it is detected.

709

* Blink once when device transmit a packet.

1.

11. Firmware Change Log

714

715

**Firmware download link:**

716

717

[[http:~~/~~/www.dragino.com/downloads/index.pHp?dir=LoRa_End_Node/LSPH01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]

718

719

720

**Firmware Upgrade Method:**

721

722

[[http:~~/~~/wiki.dragino.com/index.pHp?title=Firmware_Upgrade_Instruction_for_STM32_base_products#Introduction>>url:http://wiki.dragino.com/index.php?title=Firmware_Upgrade_Instruction_for_STM32_base_products#Introduction]]

1. Configure LSPH01 via AT Command or LoRaWAN Downlink

730

731

Use can configure LSPH01 via AT Command or LoRaWAN Downlink.

732

733

* AT Command Connection: See [[FAQ>>path:#AT_COMMAND]].

734

* LoRaWAN Downlink instruction for different platforms:

735

736

[[http:~~/~~/wiki.dragino.com/index.pHp?title=Main_Page#Use_Note_for_Server>>url:http://wiki.dragino.com/index.php?title=Main_Page#Use_Note_for_Server]]

737

738

739

There are two kinds of commands to configure LSPH01, they are:

740

741

* **General Commands**.

742

743

These commands are to configure:

744

745

* General system settings like: uplink interval.

746

* LoRaWAN protocol & radio related command.

747

748

They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:

749

750

[[http:~~/~~/wiki.dragino.com/index.pHp?title=End_Device_Downlink_Command>>url:http://wiki.dragino.com/index.php?title=End_Device_Downlink_Command]]

751

752

753

* **Commands special design for LSPH01**

754

755

These commands only valid for LSPH01, as below:

1.

11. Set Transmit Interval Time

760

761

Feature: Change LoRaWAN End Node Transmit Interval.

762

763

**AT Command: AT+TDC**

764

765

|**Command Example**|**Function**|**Response**

766

|AT+TDC=?|Show current transmit Interval|(((

30000

OK

the interval is 30000ms = 30s

772

)))

773

|AT+TDC=60000|Set Transmit Interval|(((

774

OK

775

776

Set transmit interval to 60000ms = 60 seconds

777

)))

778

779

**Downlink Command: 0x01**

780

781

Format: Command Code (0x01) followed by 3 bytes time value.

782

783

If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.

784

785

* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds

786

* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds

1.

11. Set Interrupt Mode

791

792

Feature, Set Interrupt mode for GPIO_EXIT.

793

794

**AT Command: AT+INTMOD**

795

796

|**Command Example**|**Function**|**Response**

797

|AT+INTMOD=?|Show current interrupt mode|(((

0

OK

the mode is 0 = No interruption

803

)))

804

|AT+INTMOD=2|(((

805

Set Transmit Interval

806

807

1. (Disable Interrupt),

808

1. (Trigger by rising and falling edge),

809

1. (Trigger by falling edge)

810

1. (Trigger by rising edge)

811

)))|OK

812

813

**Downlink Command: 0x06**

814

815

Format: Command Code (0x06) followed by 3 bytes.

816

817

This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.

818

819

* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode

820

* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger

1.

11. Calibrate Sensor

Detail See [[Calibration Guide>>path:#Calibration]] for the user of 0x13 and 0x14 downlink commands

1.

11. Get Firmware Version Info

831

832

Feature: use downlink to get firmware version.

833

834

835

**Downlink Command: 0x26**

836

837

838

|**Downlink Control Type**|**FPort**|**Type Code**|**Downlink payload size(bytes)**

839

|Get Firmware Version Info|Any|26|2

840

841

* Reply to the confirmation package: 26 01

842

* Reply to non-confirmed packet: 26 00

843

844

Device will send an uplink after got this downlink command. With below payload:

845

846

Configures info payload:

|(((

**Size**

**(bytes)**

)))|**1**|**1**|**1**|**1**|**1**|**5**|**1**

853

|**Value**|Software Type|(((

Frequency

Band

)))|Sub-band|(((

Firmware

Version

)))|Sensor Type|Reserve|(((

862

[[Message>>path:#Message_Type]]

863

864

[[Type>>path:#Message_Type]]

Always 0x02

)))

**Software Type**: Always 0x03 for LSPH01

**Frequency Band**:

*0x01: EU868

*0x02: US915

*0x03: IN865

*0x04: AU915

*0x05: KZ865

*0x06: RU864

*0x07: AS923

*0x08: AS923-1

*0x09: AS923-2

*0xa0: AS923-3

**Sub-Band**: value 0x00 ~~ 0x08

896

897

898

**Firmware Version**: 0x0100, Means: v1.0.0 version

**Sensor Type**:

0x01: LSE01

0x02: LDDS75

0x03: LDDS20

0x04: LLMS01

0x05: LSPH01

0x06: LSNPK01

0x07: LDDS12

1. Battery & How to replace

923

11. Battery Type

924

925

LSPH01 is equipped with a [[8500mAH ER26500 Li-SOCI2 battery>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]. The battery is un-rechargeable battery with low discharge rate targeting for 8~~10 years use. This type of battery is commonly used in IoT target for long-term running, such as water meter.

926

927

928

The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.

929

930

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]

931

932

933

Minimum Working Voltage for the LSPH01:

934

935

LSPH01: 2.45v ~~ 3.6v

1.

11. Replace Battery

Any battery with range 2.45 ~~ 3.6v can be a replacement. We recommend to use Li-SOCl2 Battery.

942

943

And make sure the positive and negative pins match.

1.

11. Power Consumption Analyze

949

950

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.

951

952

953

Instruction to use as below:

954

955

956

Step 1: Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from:

957

958

[[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/]]

959

960

961

Step 2: Open it and choose

* Product Model

* Uplink Interval

* Working Mode

And the Life expectation in difference case will be shown on the right.

968

969

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]

970

971

972

The battery related documents as below:

973

974

* [[Battery Dimension>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],

975

* [[Lithium-Thionyl Chloride Battery>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]] datasheet

976

* [[Lithium-ion Battery-Capacitor datasheet>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC_1520_datasheet.jpg]], [[Tech Spec>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC1520%20Technical%20Specification20171123.pdf]]

|(((

JST-XH-2P connector

)))

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]

1.

11.

111. Battery Note

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.

1.

11.

111. Replace the battery

996

997

You can change the battery in the LSPH01.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won’t be voltage drop between battery and main board.

998

999

1000

The default battery pack of LSPH01 includes a ER26500 plus super capacitor. If user can’t find this pack locally, they can find ER26500 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)

1. Use AT Command

11. Access AT Commands

1009

1010

LSPH01 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LSPH01 for using AT command, as below.

1011

1012

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.png]]

Connection:

USB TTL GND <~-~-~-~-> GND

1017

1018

USB TTL TXD <~-~-~-~-> UART_RXD

1019

1020

USB TTL RXD <~-~-~-~-> UART_TXD

1021

1022

1023

In the PC, you need to set the serial baud rate to **9600** to access the serial console for LSPH01. LSPH01 will output system info once power on as below:

1024

1025

1026

[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]

1027

1028

Valid AT Command please check [[Configure Device>>path:#Configure_Device]].

1. FAQ

11. How to change the LoRa Frequency Bands/Region

1035

1036

You can follow the instructions for [[how to upgrade image>>path:#3ygebqi]].

1037

When downloading the images, choose the required image file for download.

1. Trouble Shooting

11. AT Commands input doesn’t work

1043

1044

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.

1. Order Info

Part Number: **LSPH01-XX**

1050

1051

1052

**XX**: The default frequency band

1053

1054

* **AS923**: LoRaWAN AS923 band

1055

* **AU915**: LoRaWAN AU915 band

1056

* **EU433**: LoRaWAN EU433 band

1057

* **EU868**: LoRaWAN EU868 band

1058

* **KR920**: LoRaWAN KR920 band

1059

* **US915**: LoRaWAN US915 band

1060

* **IN865**: LoRaWAN IN865 band

1061

* **CN470**: LoRaWAN CN470 band

1. Packing Info

**Package Includes**:

1066

1067

* LSPH01 LoRaWAN Soil Ph Sensor x 1

1068

1069

**Dimension and weight**:

* Device Size: cm

* Device Weight: g

* Package Size / pcs : cm

* Weight / pcs : g

= 10. Support =

* 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.

1079

* 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

1080

1081

[[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]]

1082

1083

Wiki source code of LSPH01-LoRaWAN Soil pH Sensor User Manual

Applications

Navigation