Last modified by Bei Jinggeng on 2025/01/10 15:51
<
From version < 24.1 >
edited by Saxer Lin
on 2023/05/12 18:06
To version < 26.2 >
edited by Saxer Lin
on 2023/05/12 18:18
>
Change comment: There is no comment for this version

Summary

Details

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Content
... ... @@ -292,9 +292,21 @@
292 292  
293 293  In this mode, uplink payload includes in total 11 bytes. Uplink packets use FPORT=2.
294 294  
295 -|**Size(bytes)**|**2**|**2**|**2**|**1**|**2**|**2**
296 -|**Value**|Bat|Temperature(DS18B20)|ADC|Digital in & Digital Interrupt|Temperature（SHT20 or SHT31 or BH1750 Illumination Sensor|Humidity（SHT20)
295 +|**Size(bytes)**|**2**|**2**|**2**|(% style="width:216px" %)**1**|(% style="width:342px" %)**2**|(% style="width:171px" %)**2**
296 +|**Value**|Bat|(((
297 +Temperature(DS18B20)
297 297  
299 +(PC13)
300 +)))|(((
301 +ADC
302 +
303 +(PA4)
304 +)))|(% style="width:216px" %)(((
305 +Digital in & Digital Interrupt
306 +
307 +
308 +)))|(% style="width:342px" %)Temperature（SHT20 or SHT31 or BH1750 Illumination Sensor|(% style="width:171px" %)Humidity（SHT20 or SHT31)
309 +
298 298  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220627150949-6.png?rev=1.1||alt="image-20220627150949-6.png"]]
299 299  
300 300  
... ... @@ -316,11 +316,11 @@
316 316  
317 317  **Connection of LIDAR-Lite V3HP:**
318 318  
319 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656324581381-162.png?rev=1.1||alt="1656324581381-162.png"]]
331 +[[image:image-20230512173758-5.png||height="563" width="712"]]
320 320  
321 321  **Connection to Ultrasonic Sensor:**
322 322  
323 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656324598488-204.png?rev=1.1||alt="1656324598488-204.png"]]
335 +[[image:image-20230512173903-6.png||height="596" width="715"]]
324 324  
325 325  For the connection to TF-Mini or TF-Luna , MOD2 payload is as below:
326 326  
... ... @@ -337,13 +337,13 @@
337 337  
338 338  **Connection to [[TF-Mini plus>>url:http://en.benewake.com/product/detail/5c345cd0e5b3a844c472329b.html]] LiDAR(UART version):**
339 339  
340 -Need to remove R3 and R4 resistors to get low power. Since firmware v1.7.0
352 +Need to remove R3 and R4 resistors to get low power.
341 341  
342 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656376795715-436.png?rev=1.1||alt="1656376795715-436.png"]]
354 +[[image:image-20230512180609-7.png||height="555" width="802"]]
343 343  
344 344  **Connection to [[TF-Luna>>url:http://en.benewake.com/product/detail/5e1c1fd04d839408076b6255.html]] LiDAR (UART version):**
345 345  
346 -Need to remove R3 and R4 resistors to get low power. Since firmware v1.7.0
358 +Need to remove R3 and R4 resistors to get low power.
347 347  
348 348  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656376865561-355.png?rev=1.1||alt="1656376865561-355.png"]]
349 349  
... ... @@ -356,10 +356,18 @@
356 356  
357 357  |=(((
358 358  **Size(bytes)**
359 -)))|=**2**|=**2**|=**2**|=**1**|=2|=2|=1
360 -|**Value**|ADC(Pin PA0)|ADC2(PA1)|ADC3 (PA4)|(((
371 +)))|=(% style="width: 68px;" %)**2**|=(% style="width: 75px;" %)**2**|=**2**|=**1**|=(% style="width: 318px;" %)2|=(% style="width: 172px;" %)2|=1
372 +|**Value**|(% style="width:68px" %)(((
373 +ADC
374 +
375 +(PA0)
376 +)))|(% style="width:75px" %)(((
377 +ADC2
378 +
379 +(PA1)
380 +)))|ADC3 (PA4)|(((
361 361  Digital in(PA12)&Digital Interrupt1(PB14)
362 -)))|Temperature（SHT20 or SHT31 or BH1750 Illumination Sensor）|Humidity（SHT20 or SHT31)|Bat
382 +)))|(% style="width:318px" %)Temperature（SHT20 or SHT31 or BH1750 Illumination Sensor）|(% style="width:172px" %)Humidity（SHT20 or SHT31)|Bat
363 363  
364 364  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656377431497-975.png?rev=1.1||alt="1656377431497-975.png"]]
365 365  
... ... @@ -366,63 +366,70 @@
366 366  
367 367  ==== 2.3.2.4 MOD~=4 (3 x DS18B20) ====
368 368  
369 -This mode is supported in firmware version since v1.6.1. Software set to AT+MOD=4
389 +[[image:image-20230512170701-3.png||height="565" width="743"]]
370 370  
371 -Hardware connection is as below,
391 +This mode has total 11 bytes. As shown below:
372 372  
373 -**( Note:**
393 +(% style="width:1017px" %)
394 +|**Size(bytes)**|**2**|(% style="width:186px" %)**2**|(% style="width:82px" %)**2**|(% style="width:210px" %)**1**|(% style="width:191px" %)**2**|(% style="width:183px" %)**2**
395 +|**Value**|BAT|(% style="width:186px" %)(((
396 +Temperature1(DS18B20)
397 +(PC13)
398 +)))|(% style="width:82px" %)(((
399 +ADC
374 374  
375 -* In hardware version v1.x and v2.0 , R3 & R4 should change from 10k to 4.7k ohm to support the other 2 x DS18B20 probes.
376 -* In hardware version v2.1 no need to change R3 , R4, by default, they are 4.7k ohm already.
401 +(PA4)
402 +)))|(% style="width:210px" %)(((
403 +Digital in & Digital Interrupt
377 377  
378 -See [[here>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H1.6A0HardwareChangelog]] for hardware changelog. **) **
405 +(PB15)  &  (PA8) 
406 +)))|(% style="width:191px" %)Temperature2(DS18B20)
407 +(PB9)|(% style="width:183px" %)Temperature3(DS18B20)
408 +(PB8)
379 379  
380 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656377461619-156.png?rev=1.1||alt="1656377461619-156.png"]]
381 -
382 -This mode has total 11 bytes. As shown below:
383 -
384 -|**Size(bytes)**|**2**|**2**|**2**|**1**|**2**|**2**
385 -|**Value**|BAT|(((
386 -Temperature1
387 -(DS18B20)
388 -(PB3)
389 -)))|ADC|Digital in & Digital Interrupt|Temperature2
390 -(DS18B20)
391 -(PA9)|Temperature3
392 -(DS18B20)
393 -(PA10)
394 -
395 395  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656377606181-607.png?rev=1.1||alt="1656377606181-607.png"]]
396 396  
397 397  
398 398  ==== 2.3.2.5  MOD~=5(Weight Measurement by HX711) ====
399 399  
400 -This mode is supported in firmware version since v1.6.2. Please use v1.6.5 firmware version so user no need to use extra LDO for connection.
415 +[[image:image-20230512164658-2.png||height="532" width="729"]]
401 401  
402 -
403 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656378224664-860.png?rev=1.1||alt="1656378224664-860.png"]]
404 -
405 405  Each HX711 need to be calibrated before used. User need to do below two steps:
406 406  
407 407  1. Zero calibration. Don't put anything on load cell and run **AT+WEIGRE** to calibrate to Zero gram.
408 408  1. Adjust calibration factor (default value 400): Put a known weight thing on load cell and run **AT+WEIGAP** to adjust the Calibration Factor.
409 409  1. (((
410 -Remove the limit of plus or minus 5Kg in mode 5, and expand from 2 bytes to 4 bytes, the unit is g.(Since v1.8.0)
422 +Weight has 4 bytes, the unit is g.
411 411  )))
412 412  
413 413  For example:
414 414  
415 -**AT+WEIGAP =403.0**
427 +**AT+GETSENSORVALUE =0**
416 416  
417 417  Response:  Weight is 401 g
418 418  
419 419  Check the response of this command and adjust the value to match the real value for thing.
420 420  
433 +(% style="width:982px" %)
421 421  |=(((
422 422  **Size(bytes)**
423 -)))|=**2**|=**2**|=**2**|=**1**|=**4**|=2
424 -|**Value**|[[Bat>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.1BatteryInfo]]|[[Temperature(DS18B20)>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.2Temperature28DS18B2029]]|[[ADC>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.4AnalogueDigitalConverter28ADC29]]|[[Digital Input and Digitak Interrupt>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.3DigitalInput]]|Weight|Reserved
436 +)))|=**2**|=(% style="width: 282px;" %)**2**|=(% style="width: 119px;" %)**2**|=(% style="width: 279px;" %)**1**|=(% style="width: 106px;" %)**4**
437 +|**Value**|[[Bat>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.1BatteryInfo]]|(% style="width:282px" %)(((
438 +[[Temperature(DS18B20)>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.2Temperature28DS18B2029]]
425 425  
440 +(PC13)
441 +
442 +
443 +)))|(% style="width:119px" %)(((
444 +[[ADC>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.4AnalogueDigitalConverter28ADC29]]
445 +
446 +(PA4)
447 +)))|(% style="width:279px" %)(((
448 +[[Digital Input and Digitak Interrupt>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.3DigitalInput]]
449 +
450 +(PB15)  &  (PA8)
451 +)))|(% style="width:106px" %)Weight
452 +
426 426  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220820120036-2.png?width=1003&height=469&rev=1.1||alt="image-20220820120036-2.png" height="469" width="1003"]]
427 427  
428 428  
... ... @@ -432,7 +432,7 @@
432 432  
433 433  Connection is as below. The PIR sensor is a count sensor, it will generate interrupt when people come close or go away. User can replace the PIR sensor with other counting sensors.
434 434  
435 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656378351863-572.png?rev=1.1||alt="1656378351863-572.png"]]
462 +[[image:image-20230512181814-9.png||height="543" width="697"]]
436 436  
437 437  **Note:** LoRaWAN wireless transmission will infect the PIR sensor. Which cause the counting value increase +1 for every uplink. User can change PIR sensor or put sensor away of the LSN50 to avoid this happen.
438 438  
... ... @@ -540,7 +540,7 @@
540 540  
541 541  **Connection:**
542 542  
543 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656378573379-646.png?rev=1.1||alt="1656378573379-646.png"]]
570 +[[image:image-20230512180718-8.png||height="538" width="647"]]
544 544  
545 545  **Example**:
546 546  
... ... @@ -553,55 +553,26 @@
553 553  
554 554  ==== 2.3.3.3 Digital Input ====
555 555  
556 -The digital input for pin PA12,
583 +The digital input for pin PB15,
557 557  
558 -* When PA12 is high, the bit 1 of payload byte 6 is 1.
559 -* When PA12 is low, the bit 1 of payload byte 6 is 0.
585 +* When PB15 is high, the bit 1 of payload byte 6 is 1.
586 +* When PB15 is low, the bit 1 of payload byte 6 is 0.
560 560  
588 +(% class="wikigeneratedid" id="H2.3.3.4A0AnalogueDigitalConverter28ADC29" %)
589 +(((
590 +Note:The maximum voltage input supports 3.6V.
591 +)))
592 +
593 +(% class="wikigeneratedid" %)
561 561  ==== 2.3.3.4  Analogue Digital Converter (ADC) ====
562 562  
563 -The ADC pins in LSN50 can measure range from 0~~Vbat, it use reference voltage from . If user need to measure a voltage > VBat, please use resistors to divide this voltage to lower than VBat, otherwise, it may destroy the ADC pin.
596 +The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
564 564  
565 -Note: minimum VBat is 2.5v, when batrrey lower than this value. Device won't be able to send LoRa Uplink.
598 +When the measured output voltage of the sensor is not within the range of 0.1V and 1.1V, the output voltage terminal of the sensor shall be divided The example in the following figure is to reduce the output voltage of the sensor by three times If it is necessary to reduce more times, calculate according to the formula in the figure and connect the corresponding resistance in series.
566 566  
567 -The ADC monitors the voltage on the PA0 line, in mV.
600 +[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220628150112-1.png?width=285&height=241&rev=1.1||alt="image-20220628150112-1.png" height="241" width="285"]]
568 568  
569 -Ex: 0x021F = 543mv,
570 570  
571 -**~ Example1:**  Reading an Oil Sensor (Read a resistance value):
572 -
573 -
574 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220627172409-28.png?rev=1.1||alt="image-20220627172409-28.png"]]
575 -
576 -In the LSN50, we can use PB4 and PA0 pin to calculate the resistance for the oil sensor.
577 -
578 -
579 -**Steps:**
580 -
581 -1. Solder a 10K resistor between PA0 and VCC.
582 -1. Screw oil sensor's two pins to PA0 and PB4.
583 -
584 -The equipment circuit is as below:
585 -
586 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220627172500-29.png?rev=1.1||alt="image-20220627172500-29.png"]]
587 -
588 -According to above diagram:
589 -
590 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220628091043-4.png?rev=1.1||alt="image-20220628091043-4.png"]]
591 -
592 -So
593 -
594 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220628091344-6.png?rev=1.1||alt="image-20220628091344-6.png"]]
595 -
596 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220628091621-8.png?rev=1.1||alt="image-20220628091621-8.png"]] is the reading of ADC. So if ADC=0x05DC=0.9 v and VCC (BAT) is 2.9v
597 -
598 -The [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220628091702-9.png?rev=1.1||alt="image-20220628091702-9.png"]] 4.5K ohm
599 -
600 -Since the Bouy is linear resistance from 10 ~~ 70cm.
601 -
602 -The position of Bouy is [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220628091824-10.png?rev=1.1||alt="image-20220628091824-10.png"]] , from the bottom of Bouy.
603 -
604 -
605 605  ==== 2.3.3.5 Digital Interrupt ====
606 606  
607 607  Digital Interrupt refers to pin PB14, and there are different trigger methods. When there is a trigger, the SN50v3 will send a packet to the server.
... ... @@ -653,21 +653,15 @@
653 653  
654 654  door= (bytes[6] & 0x80)? "CLOSE":"OPEN";
655 655  
656 -**Notice for hardware version LSN50 v1 < v1.3** (produced before 2018-Nov).
657 657  
658 -In this hardware version, there is no R14 resistance solder. When use the latest firmware, it should set AT+INTMOD=0 to close the interrupt. If user need to use Interrupt in this hardware version, user need to solder R14 with 10M resistor and C1 (0.1uF) on board.
655 +==== 2.3.3.6 I2C Interface (SHT20 & SHT31) ====
659 659  
660 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656379563303-771.png?rev=1.1||alt="1656379563303-771.png"]]
657 +The SDA and SCK are I2C interface lines. You can use these to connect to an I2C device and get the sensor data.
661 661  
659 +We have made an example to show how to use the I2C interface to connect to the SHT20 Temperature and Humidity Sensor.
662 662  
663 -==== 2.3.3.6 I2C Interface (SHT20) ====
661 +Notice: Different I2C sensors have different I2C commands set and initiate process, if user want to use other I2C sensors, User need to re-write the source code to support those sensors. SHT20 code in SN50_v3 will be a good reference.
664 664  
665 -The PB6(SDA) and PB7(SCK) are I2C interface lines. You can use these to connect to an I2C device and get the sensor data.
666 -
667 -We have made an example to show how to use the I2C interface to connect to the SHT20 Temperature and Humidity Sensor. This is supported in the stock firmware since v1.5 with **AT+MOD=1 (default value).**
668 -
669 -Notice: Different I2C sensors have different I2C commands set and initiate process, if user want to use other I2C sensors, User need to re-write the source code to support those sensors. SHT20 code in LSN50 will be a good reference.
670 -
671 671  Below is the connection to SHT20/ SHT31. The connection is as below:
672 672  
673 673  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220902163605-2.png?rev=1.1||alt="image-20220902163605-2.png"]]
... ... @@ -694,13 +694,12 @@
694 694  
695 695  ==== 2.3.3.8 Ultrasonic Sensor ====
696 696  
697 -The LSN50 v1.5 firmware supports ultrasonic sensor (with AT+MOD=2) such as SEN0208 from DF-Robot. This Fundamental Principles of this sensor can be found at this link: [[https:~~/~~/wiki.dfrobot.com/Weather_-_proof_Ultrasonic_Sensor_with_Separate_Probe_SKU~~_~~__SEN0208>>url:https://wiki.dfrobot.com/Weather_-_proof_Ultrasonic_Sensor_with_Separate_Probe_SKU___SEN0208]]
689 +This Fundamental Principles of this sensor can be found at this link: [[https:~~/~~/wiki.dfrobot.com/Weather_-_proof_Ultrasonic_Sensor_with_Separate_Probe_SKU~~_~~__SEN0208>>url:https://wiki.dfrobot.com/Weather_-_proof_Ultrasonic_Sensor_with_Separate_Probe_SKU___SEN0208]]
698 698  
699 699  The LSN50 detects the pulse width of the sensor and converts it to mm output. The accuracy will be within 1 centimeter. The usable range (the distance between the ultrasonic probe and the measured object) is between 24cm and 600cm.
700 700  
701 701  The picture below shows the connection:
702 702  
703 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656380061365-178.png?rev=1.1||alt="1656380061365-178.png"]]
704 704  
705 705  Connect to the LSN50 and run **AT+MOD=2** to switch to ultrasonic mode (ULT).
706 706  
... ... @@ -747,7 +747,7 @@
747 747  
748 748  MOD=1 support this sensor. The sensor value is in the 8^^th^^ and 9^^th^^ bytes.
749 749  
750 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220628110012-11.jpeg?rev=1.1||alt="image-20220628110012-11.jpeg"]]
741 +[[image:image-20230512172447-4.png||height="593" width="1015"]]
751 751  
752 752  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220628110012-12.png?rev=1.1||alt="image-20220628110012-12.png"]]
753 753  
... ... @@ -918,7 +918,6 @@
918 918  * **[[Software Source Code & Compile instruction>>https://github.com/dragino/SN50v3]].**
919 919  
920 920  
921 -
922 922  = 7. Order Info =
923 923  
924 924  
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