Last modified by Mengting Qiu on 2024/04/02 16:44
<
From version < 31.8 >
edited by Xiaoling
on 2022/06/06 17:24
To version < 17.1 >
edited by Xiaoling
on 2022/06/06 16:37
>
Change comment: Uploaded new attachment "image-20220606163732-6.jpeg", version {1}

Summary

Details

Page properties
Content
... ... @@ -66,9 +66,11 @@
66 66  
67 67  * Smart Agriculture
68 68  
69 +
69 69  (% class="wikigeneratedid" id="H200B1.5FirmwareChangelog" %)
70 70  ​
71 71  
73 +(% class="wikigeneratedid" %)
72 72  == 1.5 Firmware Change log ==
73 73  
74 74  
... ... @@ -105,22 +105,27 @@
105 105  
106 106  Each LSE01 is shipped with a sticker with the default device EUI as below:
107 107  
108 -[[image:image-20220606163732-6.jpeg]]
109 109  
111 +
112 +
110 110  You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
111 111  
115 +
112 112  **Add APP EUI in the application**
113 113  
114 114  
115 -[[image:1654504596150-405.png]]
119 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image004.png]]
116 116  
117 117  
118 118  
119 119  **Add APP KEY and DEV EUI**
120 120  
121 -[[image:1654504683289-357.png]]
122 122  
126 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image005.png]]
123 123  
128 +|(((
129 +
130 +)))
124 124  
125 125  **Step 2**: Power on LSE01
126 126  
... ... @@ -127,18 +127,28 @@
127 127  
128 128  Put a Jumper on JP2 to power on the device. ( The Jumper must be in FLASH position).
129 129  
130 -[[image:image-20220606163915-7.png]]
131 131  
132 132  
139 +|(((
140 +
141 +)))
142 +
143 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image006.png]]
144 +
145 +
146 +
147 +
148 +
133 133  **Step 3:** The LSE01 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.
134 134  
135 -[[image:1654504778294-788.png]]
151 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image007.png]]
136 136  
137 137  
138 138  
139 -== 2.3 Uplink Payload ==
140 140  
141 -=== 2.3.1 MOD~=0(Default Mode) ===
156 +1.
157 +11. ​Uplink Payload
158 +111. MOD=0(Default Mode)
142 142  
143 143  LSE01 will uplink payload via LoRaWAN with below payload format: 
144 144  
... ... @@ -161,12 +161,13 @@
161 161  (Optional)
162 162  )))
163 163  
164 -[[image:1654504881641-514.png]]
181 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image007.png]]
165 165  
166 166  
184 +1.
185 +11.
186 +111. MOD=1(Original value)
167 167  
168 -=== 2.3.2 MOD~=1(Original value) ===
169 -
170 170  This mode can get the original AD value of moisture and original conductivity (with temperature drift compensation).
171 171  
172 172  |(((
... ... @@ -184,12 +184,12 @@
184 184  (Optional)
185 185  )))
186 186  
187 -[[image:1654504907647-967.png]]
205 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image008.png]]
188 188  
207 +1.
208 +11.
209 +111. Battery Info
189 189  
190 -
191 -=== 2.3.3 Battery Info ===
192 -
193 193  Check the battery voltage for LSE01.
194 194  
195 195  Ex1: 0x0B45 = 2885mV
... ... @@ -198,19 +198,21 @@
198 198  
199 199  
200 200  
201 -=== 2.3.4 Soil Moisture ===
219 +1.
220 +11.
221 +111. Soil Moisture
202 202  
203 203  Get the moisture content of the soil. The value range of the register is 0-10000(Decimal), divide this value by 100 to get the percentage of moisture in the soil.
204 204  
205 -For example, if the data you get from the register is __0x05 0xDC__, the moisture content in the soil is
225 +For example, if the data you get from the register is 0x05 0xDC, the moisture content in the soil is
206 206  
227 +**05DC(H) = 1500(D) /100 = 15%.**
207 207  
208 -(% style="color:#4f81bd" %)**05DC(H) = 1500(D) /100 = 15%.**
209 209  
230 +1.
231 +11.
232 +111. Soil Temperature
210 210  
211 -
212 -=== 2.3.5 Soil Temperature ===
213 -
214 214   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
215 215  
216 216  **Example**:
... ... @@ -220,31 +220,21 @@
220 220  If payload is FF7EH: ((FF7E & 0x8000)>>15 ===1),temp = (FF7E(H)-FFFF(H))/100 = -1.29 °C
221 221  
222 222  
243 +1.
244 +11.
245 +111. Soil Conductivity (EC)
223 223  
224 -=== 2.3.6 Soil Conductivity (EC) ===
247 +Obtain soluble salt concentration in soil or soluble ion concentration in liquid fertilizer or planting medium,. The value range of the register is 0 - 20000(Decimal)( Can be greater than 20000).
225 225  
226 -(((
227 -Obtain (% style="color:#4f81bd" %)**__soluble salt concentration__**(%%) in soil or (% style="color:#4f81bd" %)**__soluble ion concentration in liquid fertilizer__**(%%) or (% style="color:#4f81bd" %)**__planting medium__**(%%). The value range of the register is 0 - 20000(Decimal)( Can be greater than 20000).
228 -)))
229 -
230 -(((
231 231  For example, if the data you get from the register is 0x00 0xC8, the soil conductivity is 00C8(H) = 200(D) = 200 uS/cm.
232 -)))
233 233  
234 -(((
251 +
235 235  Generally, the EC value of irrigation water is less than 800uS / cm.
236 -)))
237 237  
238 -(((
239 -
240 -)))
254 +1.
255 +11.
256 +111. MOD
241 241  
242 -(((
243 -
244 -)))
245 -
246 -=== 2.3.7 MOD ===
247 -
248 248  Firmware version at least v2.1 supports changing mode.
249 249  
250 250  For example, bytes[10]=90
... ... @@ -259,13 +259,14 @@
259 259  If** **payload =** **0x0A01, workmode=1
260 260  
261 261  
272 +1.
273 +11.
274 +111. ​Decode payload in The Things Network
262 262  
263 -=== 2.3.8 ​Decode payload in The Things Network ===
264 -
265 265  While using TTN network, you can add the payload format to decode the payload.
266 266  
267 267  
268 -[[image:1654505570700-128.png]]
279 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image009.png]]
269 269  
270 270  The payload decoder function for TTN is here:
271 271  
... ... @@ -272,26 +272,30 @@
272 272  LSE01 TTN Payload Decoder: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/]]
273 273  
274 274  
275 -== 2.4 Uplink Interval ==
286 +1.
287 +11. Uplink Interval
276 276  
277 277  The LSE01 by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link:
278 278  
279 279  [[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]]
280 280  
293 +1.
294 +11. ​Downlink Payload
281 281  
282 -
283 -== 2.5 Downlink Payload ==
284 -
285 285  By default, LSE50 prints the downlink payload to console port.
286 286  
287 -[[image:image-20220606165544-8.png]]
298 +|**Downlink Control Type**|**FPort**|**Type Code**|**Downlink payload size(bytes)**
299 +|TDC (Transmit Time Interval)|Any|01|4
300 +|RESET|Any|04|2
301 +|AT+CFM|Any|05|4
302 +|INTMOD|Any|06|4
303 +|MOD|Any|0A|2
288 288  
305 +**Examples**
289 289  
290 -**Examples:**
291 291  
308 +**Set TDC**
292 292  
293 -* **Set TDC**
294 -
295 295  If the payload=0100003C, it means set the END Node’s TDC to 0x00003C=60(S), while type code is 01.
296 296  
297 297  Payload:    01 00 00 1E    TDC=30S
... ... @@ -299,19 +299,18 @@
299 299  Payload:    01 00 00 3C    TDC=60S
300 300  
301 301  
302 -* **Reset**
317 +**Reset**
303 303  
304 304  If payload = 0x04FF, it will reset the LSE01
305 305  
306 306  
307 -* **CFM**
322 +**CFM**
308 308  
309 309  Downlink Payload: 05000001, Set AT+CFM=1 or 05000000 , set AT+CFM=0
310 310  
326 +1.
327 +11. ​Show Data in DataCake IoT Server
311 311  
312 -
313 -== 2.6 ​Show Data in DataCake IoT Server ==
314 -
315 315  [[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:
316 316  
317 317  
... ... @@ -320,34 +320,42 @@
320 320  **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:
321 321  
322 322  
323 -[[image:1654505857935-743.png]]
337 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image010.png]]
324 324  
325 325  
326 -[[image:1654505874829-548.png]]
340 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image011.png]]
327 327  
342 +
343 +
344 +
345 +
328 328  Step 3: Create an account or log in Datacake.
329 329  
330 330  Step 4: Search the LSE01 and add DevEUI.
331 331  
332 332  
333 -[[image:1654505905236-553.png]]
351 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image012.png]]
334 334  
335 335  
354 +
336 336  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
337 337  
338 -[[image:1654505925508-181.png]]
339 339  
358 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image013.png]]
340 340  
341 341  
342 -== 2.7 Frequency Plans ==
343 343  
362 +1.
363 +11. Frequency Plans
364 +
344 344  The LSE01 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.
345 345  
367 +1.
368 +11.
369 +111. EU863-870 (EU868)
346 346  
347 -=== 2.7.1 EU863-870 (EU868) ===
371 +Uplink:
348 348  
349 -(% style="color:#037691" %)** Uplink:**
350 -
351 351  868.1 - SF7BW125 to SF12BW125
352 352  
353 353  868.3 - SF7BW125 to SF12BW125 and SF7BW250
... ... @@ -367,7 +367,7 @@
367 367  868.8 - FSK
368 368  
369 369  
370 -(% style="color:#037691" %)** Downlink:**
392 +Downlink:
371 371  
372 372  Uplink channels 1-9 (RX1)
373 373  
... ... @@ -374,12 +374,13 @@
374 374  869.525 - SF9BW125 (RX2 downlink only)
375 375  
376 376  
399 +1.
400 +11.
401 +111. US902-928(US915)
377 377  
378 -=== 2.7.2 US902-928(US915) ===
379 -
380 380  Used in USA, Canada and South America. Default use CHE=2
381 381  
382 -(% style="color:#037691" %)**Uplink:**
405 +Uplink:
383 383  
384 384  903.9 - SF7BW125 to SF10BW125
385 385  
... ... @@ -398,7 +398,7 @@
398 398  905.3 - SF7BW125 to SF10BW125
399 399  
400 400  
401 -(% style="color:#037691" %)**Downlink:**
424 +Downlink:
402 402  
403 403  923.3 - SF7BW500 to SF12BW500
404 404  
... ... @@ -419,12 +419,13 @@
419 419  923.3 - SF12BW500(RX2 downlink only)
420 420  
421 421  
445 +1.
446 +11.
447 +111. CN470-510 (CN470)
422 422  
423 -=== 2.7.3 CN470-510 (CN470) ===
424 -
425 425  Used in China, Default use CHE=1
426 426  
427 -(% style="color:#037691" %)**Uplink:**
451 +Uplink:
428 428  
429 429  486.3 - SF7BW125 to SF12BW125
430 430  
... ... @@ -443,7 +443,7 @@
443 443  487.7 - SF7BW125 to SF12BW125
444 444  
445 445  
446 -(% style="color:#037691" %)**Downlink:**
470 +Downlink:
447 447  
448 448  506.7 - SF7BW125 to SF12BW125
449 449  
... ... @@ -464,12 +464,13 @@
464 464  505.3 - SF12BW125 (RX2 downlink only)
465 465  
466 466  
491 +1.
492 +11.
493 +111. AU915-928(AU915)
467 467  
468 -=== 2.7.4 AU915-928(AU915) ===
469 -
470 470  Default use CHE=2
471 471  
472 -(% style="color:#037691" %)**Uplink:**
497 +Uplink:
473 473  
474 474  916.8 - SF7BW125 to SF12BW125
475 475  
... ... @@ -488,7 +488,7 @@
488 488  918.2 - SF7BW125 to SF12BW125
489 489  
490 490  
491 -(% style="color:#037691" %)**Downlink:**
516 +Downlink:
492 492  
493 493  923.3 - SF7BW500 to SF12BW500
494 494  
... ... @@ -508,22 +508,22 @@
508 508  
509 509  923.3 - SF12BW500(RX2 downlink only)
510 510  
536 +1.
537 +11.
538 +111. AS920-923 & AS923-925 (AS923)
511 511  
540 +**Default Uplink channel:**
512 512  
513 -=== 2.7.5 AS920-923 & AS923-925 (AS923) ===
514 -
515 -(% style="color:#037691" %)**Default Uplink channel:**
516 -
517 517  923.2 - SF7BW125 to SF10BW125
518 518  
519 519  923.4 - SF7BW125 to SF10BW125
520 520  
521 521  
522 -(% style="color:#037691" %)**Additional Uplink Channel**:
547 +**Additional Uplink Channel**:
523 523  
524 524  (OTAA mode, channel added by JoinAccept message)
525 525  
526 -(% style="color:#037691" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
551 +**AS920~~AS923 for Japan, Malaysia, Singapore**:
527 527  
528 528  922.2 - SF7BW125 to SF10BW125
529 529  
... ... @@ -538,7 +538,7 @@
538 538  922.0 - SF7BW125 to SF10BW125
539 539  
540 540  
541 -(% style="color:#037691" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
566 +**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
542 542  
543 543  923.6 - SF7BW125 to SF10BW125
544 544  
... ... @@ -553,16 +553,18 @@
553 553  924.6 - SF7BW125 to SF10BW125
554 554  
555 555  
556 -(% style="color:#037691" %)** Downlink:**
557 557  
582 +**Downlink:**
583 +
558 558  Uplink channels 1-8 (RX1)
559 559  
560 560  923.2 - SF10BW125 (RX2)
561 561  
562 562  
589 +1.
590 +11.
591 +111. KR920-923 (KR920)
563 563  
564 -=== 2.7.6 KR920-923 (KR920) ===
565 -
566 566  Default channel:
567 567  
568 568  922.1 - SF7BW125 to SF12BW125
... ... @@ -572,7 +572,7 @@
572 572  922.5 - SF7BW125 to SF12BW125
573 573  
574 574  
575 -(% style="color:#037691" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
602 +Uplink: (OTAA mode, channel added by JoinAccept message)
576 576  
577 577  922.1 - SF7BW125 to SF12BW125
578 578  
... ... @@ -589,7 +589,7 @@
589 589  923.3 - SF7BW125 to SF12BW125
590 590  
591 591  
592 -(% style="color:#037691" %)**Downlink:**
619 +Downlink:
593 593  
594 594  Uplink channels 1-7(RX1)
595 595  
... ... @@ -596,11 +596,12 @@
596 596  921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
597 597  
598 598  
626 +1.
627 +11.
628 +111. IN865-867 (IN865)
599 599  
600 -=== 2.7.7 IN865-867 (IN865) ===
630 +Uplink:
601 601  
602 -(% style="color:#037691" %)** Uplink:**
603 -
604 604  865.0625 - SF7BW125 to SF12BW125
605 605  
606 606  865.4025 - SF7BW125 to SF12BW125
... ... @@ -608,7 +608,7 @@
608 608  865.9850 - SF7BW125 to SF12BW125
609 609  
610 610  
611 -(% style="color:#037691" %) **Downlink:**
639 +Downlink:
612 612  
613 613  Uplink channels 1-3 (RX1)
614 614  
... ... @@ -615,130 +615,110 @@
615 615  866.550 - SF10BW125 (RX2)
616 616  
617 617  
646 +1.
647 +11. LED Indicator
618 618  
619 -
620 -== 2.8 LED Indicator ==
621 -
622 622  The LSE01 has an internal LED which is to show the status of different state.
623 623  
651 +
624 624  * Blink once when device power on.
625 625  * Solid ON for 5 seconds once device successful Join the network.
626 626  * Blink once when device transmit a packet.
627 627  
656 +1.
657 +11. Installation in Soil
628 628  
629 -== 2.9 Installation in Soil ==
630 -
631 631  **Measurement the soil surface**
632 632  
633 633  
634 -[[image:1654506634463-199.png]] ​
662 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image014.png]] ​
635 635  
636 -(((
637 -(((
638 638  Choose the proper measuring position. Avoid the probe to touch rocks or hard things. Split the surface soil according to the measured deep. Keep the measured as original density. Vertical insert the probe into the soil to be measured. Make sure not shake when inserting.
639 -)))
640 -)))
641 641  
642 642  
643 643  
644 -[[image:1654506665940-119.png]]
645 645  
646 -(((
669 +
670 +
671 +
672 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image015.png]]
673 +
674 +
675 +
647 647  Dig a hole with diameter > 20CM.
648 -)))
649 649  
650 -(((
651 651  Horizontal insert the probe to the soil and fill the hole for long term measurement.
652 -)))
653 653  
654 654  
655 -== 2.10 ​Firmware Change Log ==
656 656  
657 -(((
682 +
683 +1.
684 +11. ​Firmware Change Log
685 +
658 658  **Firmware download link:**
659 -)))
660 660  
661 -(((
662 662  [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]
663 -)))
664 664  
665 -(((
666 -
667 -)))
668 668  
669 -(((
670 -**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
671 -)))
691 +**Firmware Upgrade Method:**
672 672  
673 -(((
674 -
675 -)))
693 +[[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]]
676 676  
677 -(((
695 +
678 678  **V1.0.**
679 -)))
680 680  
681 -(((
682 682  Release
683 -)))
684 684  
685 685  
686 -== 2.11 ​Battery Analysis ==
687 687  
688 -=== 2.11.1 ​Battery Type ===
702 +1.
703 +11. ​Battery Analysis
704 +111. ​Battery Type
689 689  
690 -(((
691 691  The LSE01 battery is a combination of a 4000mAh Li/SOCI2 Battery and a Super Capacitor. The battery is non-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.
692 -)))
693 693  
694 -(((
708 +
695 695  The battery is designed to last for more than 5 years for the LSN50.
696 -)))
697 697  
698 -(((
699 -(((
700 -The battery-related documents are as below:
701 -)))
702 -)))
703 703  
704 -* (((
705 -[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
712 +The battery related documents as below:
713 +
714 +* [[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
715 +* [[Lithium-Thionyl Chloride Battery>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/ER18505_datasheet-EN.pdf]] datasheet, [[Tech Spec>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/ER18505_datasheet_PM-ER18505-S-02-LF_EN.pdf]]
716 +* [[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]]
717 +
718 +|(((
719 +JST-XH-2P connector
706 706  )))
707 -* (((
708 -[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
709 -)))
710 -* (((
711 -[[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]]
712 -)))
713 713  
714 - [[image:image-20220606171726-9.png]]
722 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image016.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image017.png]]
715 715  
716 716  
717 717  
718 -=== 2.11.2 ​Battery Note ===
726 +1.
727 +11.
728 +111. ​Battery Note
719 719  
720 -(((
721 721  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.
722 -)))
723 723  
724 724  
733 +1.
734 +11.
735 +111. ​Replace the battery
725 725  
726 -=== 2.11.3 Replace the battery ===
727 -
728 -(((
729 729  If Battery is lower than 2.7v, user should replace the battery of LSE01.
730 -)))
731 731  
732 -(((
739 +
733 733  You can change the battery in the LSE01.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.
734 -)))
735 735  
736 -(((
742 +
737 737  The default battery pack of LSE01 includes a ER18505 plus super capacitor. If user can’t find this pack locally, they can find ER18505 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)
738 -)))
739 739  
740 740  
741 741  
747 +
748 +
749 +
742 742  = 3. ​Using the AT Commands =
743 743  
744 744  == 3.1 Access AT Commands ==
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