Last modified by Bei Jinggeng on 2025/01/10 15:51
<
From version < 43.39 >
edited by Xiaoling
on 2023/05/16 14:54
To version < 43.47 >
edited by Xiaoling
on 2023/05/16 15:48
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Summary

Details

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Content
... ... @@ -30,6 +30,7 @@
30 30  
31 31  == 1.2 ​Features ==
32 32  
33 +
33 33  * LoRaWAN 1.0.3 Class A
34 34  * Ultra-low power consumption
35 35  * Open-Source hardware/software
... ... @@ -295,7 +295,7 @@
295 295  In this mode, uplink payload includes in total 11 bytes. Uplink packets use FPORT=2.
296 296  
297 297  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
298 -|(% style="width:50px;background-color:#D9E2F3;color:#0070C0" %)**Size(bytes)**|(% style="width:20px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:100px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:40px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:90px;background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="width:130px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:90px;background-color:#D9E2F3;color:#0070C0" %)**2**
299 +|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0; width:20px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:130px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**2**
299 299  |**Value**|Bat|(% style="width:191px" %)(((
300 300  Temperature(DS18B20)(PC13)
301 301  )))|(% style="width:78px" %)(((
... ... @@ -311,12 +311,14 @@
311 311  [[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"]]
312 312  
313 313  
315 +
314 314  ==== 2.3.2.2  MOD~=2 (Distance Mode) ====
315 315  
318 +
316 316  This mode is target to measure the distance. The payload of this mode is totally 11 bytes. The 8^^th^^ and 9^^th^^ bytes is for the distance.
317 317  
318 318  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
319 -|(% style="width:40px;background-color:#D9E2F3;color:#0070C0" %)**Size(bytes)**|(% style="width:40px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:110px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:40px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:110px;background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="width:140px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:40px;background-color:#D9E2F3;color:#0070C0" %)**2**
322 +|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:110px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:110px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:140px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**2**
320 320  |**Value**|BAT|(% style="width:196px" %)(((
321 321  Temperature(DS18B20)(PC13)
322 322  )))|(% style="width:87px" %)(((
... ... @@ -330,10 +330,12 @@
330 330  
331 331  [[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/1656324539647-568.png?rev=1.1||alt="1656324539647-568.png"]]
332 332  
336 +
333 333  (% style="color:blue" %)**Connection of LIDAR-Lite V3HP:**
334 334  
335 335  [[image:image-20230512173758-5.png||height="563" width="712"]]
336 336  
341 +
337 337  (% style="color:blue" %)**Connection to Ultrasonic Sensor:**
338 338  
339 339  Need to remove R1 and R2 resistors to get low power,otherwise there will be 240uA standby current.
... ... @@ -340,10 +340,11 @@
340 340  
341 341  [[image:image-20230512173903-6.png||height="596" width="715"]]
342 342  
348 +
343 343  For the connection to TF-Mini or TF-Luna , MOD2 payload is as below:
344 344  
345 345  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
346 -|(% style="width:50px;background-color:#D9E2F3;color:#0070C0" %)**Size(bytes)**|(% style="width:20px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:100px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:100px;background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="width:50px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:120px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width:80px;background-color:#D9E2F3;color:#0070C0" %)**2**
352 +|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0; width:20px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:120px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:80px" %)**2**
347 347  |**Value**|BAT|(% style="width:183px" %)(((
348 348  Temperature(DS18B20)(PC13)
349 349  )))|(% style="width:173px" %)(((
... ... @@ -358,6 +358,7 @@
358 358  
359 359  [[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/1656376779088-686.png?rev=1.1||alt="1656376779088-686.png"]]
360 360  
367 +
361 361  **Connection to [[TF-Mini plus>>url:http://en.benewake.com/product/detail/5c345cd0e5b3a844c472329b.html]] LiDAR(UART version):**
362 362  
363 363  Need to remove R3 and R4 resistors to get low power,otherwise there will be 400uA standby current.
... ... @@ -364,6 +364,7 @@
364 364  
365 365  [[image:image-20230512180609-7.png||height="555" width="802"]]
366 366  
374 +
367 367  **Connection to [[TF-Luna>>url:http://en.benewake.com/product/detail/5e1c1fd04d839408076b6255.html]] LiDAR (UART version):**
368 368  
369 369  Need to remove R3 and R4 resistors to get low power,otherwise there will be 400uA standby current.
... ... @@ -373,6 +373,7 @@
373 373  
374 374  ==== 2.3.2.3  MOD~=3 (3 ADC + I2C) ====
375 375  
384 +
376 376  This mode has total 12 bytes. Include 3 x ADC + 1x I2C
377 377  
378 378  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
... ... @@ -402,7 +402,7 @@
402 402  This mode has total 11 bytes. As shown below:
403 403  
404 404  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
405 -|(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**Size(bytes)**|(% style="width: 20px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)**2**
414 +|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0; width:20px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**2**
406 406  |**Value**|BAT|(% style="width:186px" %)(((
407 407  Temperature1(DS18B20)(PC13)
408 408  )))|(% style="width:82px" %)(((
... ... @@ -417,8 +417,10 @@
417 417  [[image:image-20230513134006-1.png||height="559" width="736"]]
418 418  
419 419  
429 +
420 420  ==== 2.3.2.5  MOD~=5(Weight Measurement by HX711) ====
421 421  
432 +
422 422  [[image:image-20230512164658-2.png||height="532" width="729"]]
423 423  
424 424  Each HX711 need to be calibrated before used. User need to do below two steps:
... ... @@ -454,8 +454,10 @@
454 454  [[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"]]
455 455  
456 456  
468 +
457 457  ==== 2.3.2.6  MOD~=6 (Counting Mode) ====
458 458  
471 +
459 459  In this mode, the device will work in counting mode. It counts the interrupt on the interrupt pins and sends the count on TDC time.
460 460  
461 461  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.
... ... @@ -462,7 +462,7 @@
462 462  
463 463  [[image:image-20230512181814-9.png||height="543" width="697"]]
464 464  
465 -(% style="color:red" %)**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 SN50_v3 to avoid this happen.
478 +(% style="color:red" %)**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 SN50_v3 to avoid this happen.**
466 466  
467 467  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
468 468  |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**Size(bytes)**|=(% style="width: 20px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 220px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)**1**|=(% style="width: 80px;background-color:#D9E2F3;color:#0070C0" %)**4**
... ... @@ -479,8 +479,10 @@
479 479  [[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/1656378441509-171.png?rev=1.1||alt="1656378441509-171.png"]]
480 480  
481 481  
495 +
482 482  ==== 2.3.2.7  MOD~=7 (Three interrupt contact modes) ====
483 483  
498 +
484 484  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
485 485  |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
486 486  **Size(bytes)**
... ... @@ -496,8 +496,10 @@
496 496  
497 497  [[image:image-20230513111203-7.png||height="324" width="975"]]
498 498  
514 +
499 499  ==== 2.3.2.8  MOD~=8 （3ADC+1DS18B20） ====
500 500  
517 +
501 501  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
502 502  |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
503 503  **Size(bytes)**
... ... @@ -520,6 +520,7 @@
520 520  
521 521  ==== 2.3.2.9  MOD~=9 (3DS18B20+ two Interrupt count mode) ====
522 522  
540 +
523 523  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
524 524  |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
525 525  **Size(bytes)**
... ... @@ -544,24 +544,25 @@
544 544  
545 545  [[image:image-20230513111255-9.png||height="341" width="899"]]
546 546  
547 -**The newly added AT command is issued correspondingly:**
565 +(% style="color:blue" %)**The newly added AT command is issued correspondingly:**
548 548  
549 -**~ AT+INTMOD1** ** PA8**  pin：  Corresponding downlink:  **06 00 00 xx**
567 +(% style="color:#037691" %)** AT+INTMOD1 PA8**(%%)  pin：  Corresponding downlink:  (% style="color:#037691" %)**06 00 00 xx**
550 550  
551 -**~ AT+INTMOD2**  **PA4**  pin：  Corresponding downlink:**  06 00 01 xx**
569 +(% style="color:#037691" %)** AT+INTMOD2 PA4**(%%)  pin：  Corresponding downlink: (% style="color:#037691" %)**06 00 01 xx**
552 552  
553 -**~ AT+INTMOD3**  **PB15**  pin：  Corresponding downlink:  ** 06 00 02 xx**
571 +(% style="color:#037691" %)** AT+INTMOD3 PB15**(%%)  pin：  Corresponding downlink:  (% style="color:#037691" %)** 06 00 02 xx**
554 554  
555 -**AT+SETCNT=aa,bb** 
556 556  
574 +(% style="color:blue" %)**AT+SETCNT=aa,bb** 
575 +
557 557  When AA is 1, set the count of PA8 pin to BB Corresponding downlink：09 01 bb bb bb bb
558 558  
559 559  When AA is 2, set the count of PA4 pin to BB Corresponding downlink：09 02 bb bb bb bb
560 560  
561 561  
562 -
563 563  === 2.3.3  ​Decode payload ===
564 564  
583 +
565 565  While using TTN V3 network, you can add the payload format to decode the payload.
566 566  
567 567  [[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/1656378466788-734.png?rev=1.1||alt="1656378466788-734.png"]]
... ... @@ -573,6 +573,7 @@
573 573  
574 574  ==== 2.3.3.1 Battery Info ====
575 575  
595 +
576 576  Check the battery voltage for SN50v3.
577 577  
578 578  Ex1: 0x0B45 = 2885mV
... ... @@ -582,16 +582,18 @@
582 582  
583 583  ==== 2.3.3.2  Temperature (DS18B20) ====
584 584  
605 +
585 585  If there is a DS18B20 connected to PC13 pin. The temperature will be uploaded in the payload.
586 586  
587 -More DS18B20 can check the [[3 DS18B20 mode>>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/#2.3.4MOD3D4283xDS18B2029]]
608 +More DS18B20 can check the [[3 DS18B20 mode>>||anchor="H2.3.2.4MOD3D4283xDS18B2029"]]
588 588  
589 -**Connection:**
610 +(% style="color:blue" %)**Connection:**
590 590  
591 591  [[image:image-20230512180718-8.png||height="538" width="647"]]
592 592  
593 -**Example**:
594 594  
615 +(% style="color:blue" %)**Example**:
616 +
595 595  If payload is: 0105H:  (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree
596 596  
597 597  If payload is: FF3FH :  (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
... ... @@ -601,6 +601,7 @@
601 601  
602 602  ==== 2.3.3.3 Digital Input ====
603 603  
626 +
604 604  The digital input for pin PB15,
605 605  
606 606  * When PB15 is high, the bit 1 of payload byte 6 is 1.
... ... @@ -610,11 +610,14 @@
610 610  (((
611 611  When the digital interrupt pin is set to AT+INTMODx=0, this pin is used as a digital input pin.
612 612  
613 -(% style="color:red" %)**Note:**The maximum voltage input supports 3.6V.
636 +(% style="color:red" %)**Note: The maximum voltage input supports 3.6V.**
637 +
638 +
614 614  )))
615 615  
616 616  ==== 2.3.3.4  Analogue Digital Converter (ADC) ====
617 617  
643 +
618 618  The measuring range of the ADC is only about 0V to 1.1V The voltage resolution is about 0.24mv.
619 619  
620 620  When the measured output voltage of the sensor is not within the range of 0V 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.
... ... @@ -621,17 +621,19 @@
621 621  
622 622  [[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"]]
623 623  
624 -(% style="color:red" %)**Note:**If the ADC type sensor needs to be powered by SN50_v3, it is recommended to use +5V to control its switch.Only sensors with low power consumption can be powered with VDD.
650 +(% style="color:red" %)**Note: If the ADC type sensor needs to be powered by SN50_v3, it is recommended to use +5V to control its switch.Only sensors with low power consumption can be powered with VDD.**
625 625  
626 626  
627 627  ==== 2.3.3.5 Digital Interrupt ====
628 628  
655 +
629 629  Digital Interrupt refers to pin PA8, and there are different trigger methods. When there is a trigger, the SN50v3 will send a packet to the server.
630 630  
631 -(% style="color:blue" %)**~ Interrupt connection method:**
658 +(% style="color:blue" %)** Interrupt connection method:**
632 632  
633 633  [[image:image-20230513105351-5.png||height="147" width="485"]]
634 634  
662 +
635 635  (% style="color:blue" %)**Example to use with door sensor :**
636 636  
637 637  The door sensor is shown at right. It is a two wire magnetic contact switch used for detecting the open/close status of doors or windows.
... ... @@ -640,8 +640,9 @@
640 640  
641 641  When the two pieces are close to each other, the 2 wire output will be short or open (depending on the type), while if the two pieces are away from each other, the 2 wire output will be the opposite status. So we can use SN50_v3 interrupt interface to detect the status for the door or window.
642 642  
643 -(% style="color:blue" %)**~ Below is the installation example:**
644 644  
672 +(% style="color:blue" %)**Below is the installation example:**
673 +
645 645  Fix one piece of the magnetic sensor to the door and connect the two pins to SN50_v3 as follows:
646 646  
647 647  * (((
... ... @@ -653,7 +653,7 @@
653 653  
654 654  Install the other piece to the door. Find a place where the two pieces will be close to each other when the door is closed. For this particular magnetic sensor, when the door is closed, the output will be short, and PA8 will be at the VCC voltage.
655 655  
656 -Door sensors have two types: ** NC (Normal close)** and **NO (normal open)**. The connection for both type sensors are the same. But the decoding for payload are reverse, user need to modify this in the IoT Server decoder.
685 +Door sensors have two types: (% style="color:blue" %)** NC (Normal close)**(%%) and (% style="color:blue" %)**NO (normal open)**(%%). The connection for both type sensors are the same. But the decoding for payload are reverse, user need to modify this in the IoT Server decoder.
657 657  
658 658  When door sensor is shorted, there will extra power consumption in the circuit, the extra current is 3v3/R14 = 3v3/1Mohm = 3uA which can be ignored.
659 659  
... ... @@ -665,12 +665,13 @@
665 665  
666 666  The command is:
667 667  
668 -(% style="color:blue" %)**AT+INTMOD1=1   ** (%%) ~/~/(more info about INMOD please refer** **[[**AT Command Manual**>>url:http://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/&file=DRAGINO_LSN50_AT_Commands_v1.5.1.pdf]]**. **)
697 +(% style="color:blue" %)**AT+INTMOD1=1   ** (%%) ~/~/(more info about INMOD please refer** **[[**AT Command Manual**>>url:http://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/&file=DRAGINO_LSN50_AT_Commands_v1.5.1.pdf]]**. **)
669 669  
670 670  Below shows some screen captures in TTN V3:
671 671  
672 672  [[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/1656379339508-835.png?rev=1.1||alt="1656379339508-835.png"]]
673 673  
703 +
674 674  In MOD=1, user can use byte 6 to see the status for door open or close. TTN V3 decoder is as below:
675 675  
676 676  door= (bytes[6] & 0x80)? "CLOSE":"OPEN";
... ... @@ -678,6 +678,7 @@
678 678  
679 679  ==== 2.3.3.6 I2C Interface (SHT20 & SHT31) ====
680 680  
711 +
681 681  The SDA and SCK are I2C interface lines. You can use these to connect to an I2C device and get the sensor data.
682 682  
683 683  We have made an example to show how to use the I2C interface to connect to the SHT20/ SHT31 Temperature and Humidity Sensor.
... ... @@ -706,7 +706,7 @@
706 706  
707 707  ==== 2.3.3.7  ​Distance Reading ====
708 708  
709 -Refer [[Ultrasonic Sensor section>>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/#H2.4.8UltrasonicSensor]].
740 +Refer [[Ultrasonic Sensor section>>||anchor="H2.3.3.8UltrasonicSensor"]].
710 710  
711 711  
712 712  ==== 2.3.3.8 Ultrasonic Sensor ====
... ... @@ -715,13 +715,13 @@
715 715  
716 716  The SN50_v3 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.
717 717  
718 -The working principle of this sensor is similar to the **HC-SR04** ultrasonic sensor.
749 +The working principle of this sensor is similar to the (% style="color:blue" %)**HC-SR04**(%%) ultrasonic sensor.
719 719  
720 720  The picture below shows the connection:
721 721  
722 722  [[image:image-20230512173903-6.png||height="596" width="715"]]
723 723  
724 -Connect to the SN50_v3 and run **AT+MOD=2** to switch to ultrasonic mode (ULT).
755 +Connect to the SN50_v3 and run (% style="color:blue" %)**AT+MOD=2**(%%) to switch to ultrasonic mode (ULT).
725 725  
726 726  The ultrasonic sensor uses the 8^^th^^ and 9^^th^^ byte for the measurement value.
727 727  
... ... @@ -777,8 +777,6 @@
777 777  * 7: MOD8
778 778  * 8: MOD9
779 779  
780 -
781 -
782 782  == 2.4 Payload Decoder file ==
783 783  
784 784  
... ... @@ -855,8 +855,6 @@
855 855  * Example 1: Downlink Payload: 0100001E  ~/~/  Set Transmit Interval (TDC) = 30 seconds
856 856  * Example 2: Downlink Payload: 0100003C  ~/~/  Set Transmit Interval (TDC) = 60 seconds
857 857  
858 -
859 -
860 860  === 3.3.2 Get Device Status ===
861 861  
862 862  Send a LoRaWAN downlink to ask the device to send its status.
... ... @@ -904,8 +904,6 @@
904 904  * Example 3: Downlink Payload: 06000102  **~-~-->**  AT+INTMOD2=2
905 905  * Example 4: Downlink Payload: 06000201  **~-~-->**  AT+INTMOD3=1
906 906  
907 -
908 -
909 909  === 3.3.4 Set Power Output Duration ===
910 910  
911 911  Control the output duration 5V . Before each sampling, device will
... ... @@ -937,8 +937,6 @@
937 937  * Example 1: Downlink Payload: 070000  **~-~-->**  AT+5VT=0
938 938  * Example 2: Downlink Payload: 0701F4  **~-~-->**  AT+5VT=500
939 939  
940 -
941 -
942 942  === 3.3.5 Set Weighing parameters ===
943 943  
944 944  Feature: Working mode 5 is effective, weight initialization and weight factor setting of HX711.
... ... @@ -963,8 +963,6 @@
963 963  * Example 2: Downlink Payload: 08020FA3  **~-~-->**  AT+WEIGAP=400.3
964 964  * Example 3: Downlink Payload: 08020FA0  **~-~-->**  AT+WEIGAP=400.0
965 965  
966 -
967 -
968 968  === 3.3.6 Set Digital pulse count value ===
969 969  
970 970  Feature: Set the pulse count value.
... ... @@ -987,8 +987,6 @@
987 987  * Example 1: Downlink Payload: 090100000000  **~-~-->**  AT+SETCNT=1,0
988 988  * Example 2: Downlink Payload: 0902000003E8  **~-~-->**  AT+SETCNT=2,1000
989 989  
990 -
991 -
992 992  === 3.3.7 Set Workmode ===
993 993  
994 994  Feature: Switch working mode.
... ... @@ -1012,8 +1012,6 @@
1012 1012  * Example 1: Downlink Payload: 0A01  **~-~-->**  AT+MOD=1
1013 1013  * Example 2: Downlink Payload: 0A04  **~-~-->**  AT+MOD=4
1014 1014  
1015 -
1016 -
1017 1017  = 4. Battery & Power Consumption =
1018 1018  
1019 1019  

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