Last modified by Bei Jinggeng on 2025/01/10 15:51
<
From version < 28.1 >
edited by Saxer Lin
on 2023/05/13 10:20
To version < 26.1 >
edited by Saxer Lin
on 2023/05/12 18:18
>
Change comment: Uploaded new attachment "image-20230512181814-9.png", version {1}

Summary

Details

Page properties
Content
... ... @@ -292,21 +292,9 @@
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**|(% style="width:216px" %)**1**|(% style="width:342px" %)**2**|(% style="width:171px" %)**2**
296 -|**Value**|Bat|(((
297 -Temperature(DS18B20)
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)
298 298  
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 -
310 310  [[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"]]
311 311  
312 312  
... ... @@ -328,11 +328,11 @@
328 328  
329 329  **Connection of LIDAR-Lite V3HP:**
330 330  
331 -[[image:image-20230512173758-5.png||height="563" width="712"]]
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"]]
332 332  
333 333  **Connection to Ultrasonic Sensor:**
334 334  
335 -[[image:image-20230512173903-6.png||height="596" width="715"]]
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"]]
336 336  
337 337  For the connection to TF-Mini or TF-Luna , MOD2 payload is as below:
338 338  
... ... @@ -349,13 +349,13 @@
349 349  
350 350  **Connection to [[TF-Mini plus>>url:http://en.benewake.com/product/detail/5c345cd0e5b3a844c472329b.html]] LiDAR(UART version):**
351 351  
352 -Need to remove R3 and R4 resistors to get low power.
340 +Need to remove R3 and R4 resistors to get low power. Since firmware v1.7.0
353 353  
354 -[[image:image-20230512180609-7.png||height="555" width="802"]]
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"]]
355 355  
356 356  **Connection to [[TF-Luna>>url:http://en.benewake.com/product/detail/5e1c1fd04d839408076b6255.html]] LiDAR (UART version):**
357 357  
358 -Need to remove R3 and R4 resistors to get low power.
346 +Need to remove R3 and R4 resistors to get low power. Since firmware v1.7.0
359 359  
360 360  [[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"]]
361 361  
... ... @@ -368,18 +368,10 @@
368 368  
369 369  |=(((
370 370  **Size(bytes)**
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)|(((
359 +)))|=**2**|=**2**|=**2**|=**1**|=2|=2|=1
360 +|**Value**|ADC(Pin PA0)|ADC2(PA1)|ADC3 (PA4)|(((
381 381  Digital in(PA12)&Digital Interrupt1(PB14)
382 -)))|(% style="width:318px" %)Temperature（SHT20 or SHT31 or BH1750 Illumination Sensor）|(% style="width:172px" %)Humidity（SHT20 or SHT31)|Bat
362 +)))|Temperature（SHT20 or SHT31 or BH1750 Illumination Sensor）|Humidity（SHT20 or SHT31)|Bat
383 383  
384 384  [[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"]]
385 385  
... ... @@ -386,70 +386,63 @@
386 386  
387 387  ==== 2.3.2.4 MOD~=4 (3 x DS18B20) ====
388 388  
389 -[[image:image-20230512170701-3.png||height="565" width="743"]]
369 +This mode is supported in firmware version since v1.6.1. Software set to AT+MOD=4
390 390  
391 -This mode has total 11 bytes. As shown below:
371 +Hardware connection is as below,
392 392  
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
373 +**( Note:**
400 400  
401 -(PA4)
402 -)))|(% style="width:210px" %)(((
403 -Digital in & Digital Interrupt
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.
404 404  
405 -(PB15)  &  (PA8) 
406 -)))|(% style="width:191px" %)Temperature2(DS18B20)
407 -(PB9)|(% style="width:183px" %)Temperature3(DS18B20)
408 -(PB8)
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. **) **
409 409  
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 +
410 410  [[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"]]
411 411  
412 412  
413 413  ==== 2.3.2.5  MOD~=5(Weight Measurement by HX711) ====
414 414  
415 -[[image:image-20230512164658-2.png||height="532" width="729"]]
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.
416 416  
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 +
417 417  Each HX711 need to be calibrated before used. User need to do below two steps:
418 418  
419 419  1. Zero calibration. Don't put anything on load cell and run **AT+WEIGRE** to calibrate to Zero gram.
420 420  1. Adjust calibration factor (default value 400): Put a known weight thing on load cell and run **AT+WEIGAP** to adjust the Calibration Factor.
421 421  1. (((
422 -Weight has 4 bytes, the unit is g.
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)
423 423  )))
424 424  
425 425  For example:
426 426  
427 -**AT+GETSENSORVALUE =0**
415 +**AT+WEIGAP =403.0**
428 428  
429 429  Response:  Weight is 401 g
430 430  
431 431  Check the response of this command and adjust the value to match the real value for thing.
432 432  
433 -(% style="width:982px" %)
434 434  |=(((
435 435  **Size(bytes)**
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]]
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
439 439  
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 -
453 453  [[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"]]
454 454  
455 455  
... ... @@ -459,7 +459,7 @@
459 459  
460 460  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.
461 461  
462 -[[image:image-20230512181814-9.png||height="543" width="697"]]
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"]]
463 463  
464 464  **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.
465 465  
... ... @@ -567,7 +567,7 @@
567 567  
568 568  **Connection:**
569 569  
570 -[[image:image-20230512180718-8.png||height="538" width="647"]]
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"]]
571 571  
572 572  **Example**:
573 573  
... ... @@ -580,26 +580,55 @@
580 580  
581 581  ==== 2.3.3.3 Digital Input ====
582 582  
583 -The digital input for pin PB15,
556 +The digital input for pin PA12,
584 584  
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.
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.
587 587  
588 -(% class="wikigeneratedid" id="H2.3.3.4A0AnalogueDigitalConverter28ADC29" %)
589 -(((
590 -Note:The maximum voltage input supports 3.6V.
591 -)))
592 -
593 -(% class="wikigeneratedid" %)
594 594  ==== 2.3.3.4  Analogue Digital Converter (ADC) ====
595 595  
596 -The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
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.
597 597  
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.
565 +Note: minimum VBat is 2.5v, when batrrey lower than this value. Device won't be able to send LoRa Uplink.
599 599  
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"]]
567 +The ADC monitors the voltage on the PA0 line, in mV.
601 601  
569 +Ex: 0x021F = 543mv,
602 602  
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 +
603 603  ==== 2.3.3.5 Digital Interrupt ====
604 604  
605 605  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.
... ... @@ -651,15 +651,21 @@
651 651  
652 652  door= (bytes[6] & 0x80)? "CLOSE":"OPEN";
653 653  
656 +**Notice for hardware version LSN50 v1 < v1.3** (produced before 2018-Nov).
654 654  
655 -==== 2.3.3.6 I2C Interface (SHT20 & SHT31) ====
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.
656 656  
657 -The SDA and SCK are I2C interface lines. You can use these to connect to an I2C device and get the sensor data.
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"]]
658 658  
659 -We have made an example to show how to use the I2C interface to connect to the SHT20 Temperature and Humidity Sensor.
660 660  
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.
663 +==== 2.3.3.6 I2C Interface (SHT20) ====
662 662  
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 +
663 663  Below is the connection to SHT20/ SHT31. The connection is as below:
664 664  
665 665  [[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"]]
... ... @@ -686,12 +686,13 @@
686 686  
687 687  ==== 2.3.3.8 Ultrasonic Sensor ====
688 688  
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]]
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]]
690 690  
691 691  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.
692 692  
693 693  The picture below shows the connection:
694 694  
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"]]
695 695  
696 696  Connect to the LSN50 and run **AT+MOD=2** to switch to ultrasonic mode (ULT).
697 697  
... ... @@ -738,7 +738,7 @@
738 738  
739 739  MOD=1 support this sensor. The sensor value is in the 8^^th^^ and 9^^th^^ bytes.
740 740  
741 -[[image:image-20230512172447-4.png||height="593" width="1015"]]
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"]]
742 742  
743 743  [[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"]]
744 744  
... ... @@ -909,6 +909,7 @@
909 909  * **[[Software Source Code & Compile instruction>>https://github.com/dragino/SN50v3]].**
910 910  
911 911  
921 +
912 912  = 7. Order Info =
913 913  
914 914  
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