Last modified by Bei Jinggeng on 2025/01/10 15:51
<
From version < 45.4 >
edited by Xiaoling
on 2023/05/27 11:50
To version < 74.8 >
edited by Mengting Qiu
on 2023/12/11 20:00
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Summary

Details

Page properties
Author
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1 -XWiki.Xiaoling
1 +XWiki.ting
Content
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19 19  
20 20  (% style="color:blue" %)**SN50V3-LB **(%%)LoRaWAN Sensor Node is a Long Range LoRa Sensor Node. It is designed for outdoor use and powered by (% style="color:blue" %)** 8500mA Li/SOCl2 battery**(%%) for long term use.SN50V3-LB is designed to facilitate developers to quickly deploy industrial level LoRa and IoT solutions. It help users to turn the idea into a practical application and make the Internet of Things a reality. It is easy to program, create and connect your things everywhere.
21 21  
22 -(% style="color:blue" %)**SN50V3-LB wireless part**(%%) is based on SX1262 allows the user 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 minimising current consumption.It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
22 +(% style="color:blue" %)**SN50V3-LB wireless part**(%%) is based on SX1262 allows the user 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 minimising current consumption.It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, and so on.
23 23  
24 24  (% style="color:blue" %)**SN50V3-LB **(%%)has a powerful 48Mhz ARM microcontroller with 256KB flash and 64KB RAM. It has multiplex I/O pins to connect to different sensors.
25 25  
... ... @@ -27,7 +27,6 @@
27 27  
28 28  SN50V3-LB is the 3^^rd^^ generation of LSN50 series generic sensor node from Dragino. It is an (% style="color:blue" %)**open source project**(%%) and has a mature LoRaWAN stack and application software. User can use the pre-load software for their IoT projects or easily customize the software for different requirements.
29 29  
30 -
31 31  == 1.2 ​Features ==
32 32  
33 33  
... ... @@ -41,8 +41,6 @@
41 41  * Downlink to change configure
42 42  * 8500mAh Battery for long term use
43 43  
44 -
45 -
46 46  == 1.3 Specification ==
47 47  
48 48  
... ... @@ -80,8 +80,6 @@
80 80  * Sleep Mode: 5uA @ 3.3v
81 81  * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
82 82  
83 -
84 -
85 85  == 1.4 Sleep mode and working mode ==
86 86  
87 87  
... ... @@ -127,7 +127,7 @@
127 127  == 1.7 Pin Definitions ==
128 128  
129 129  
130 -[[image:image-20230513102034-2.png]]
125 +[[image:image-20230610163213-1.png||height="404" width="699"]]
131 131  
132 132  
133 133  == 1.8 Mechanical ==
... ... @@ -231,33 +231,33 @@
231 231  
232 232  (% style="color:#037691" %)**Frequency Band**:
233 233  
234 -*0x01: EU868
229 +0x01: EU868
235 235  
236 -*0x02: US915
231 +0x02: US915
237 237  
238 -*0x03: IN865
233 +0x03: IN865
239 239  
240 -*0x04: AU915
235 +0x04: AU915
241 241  
242 -*0x05: KZ865
237 +0x05: KZ865
243 243  
244 -*0x06: RU864
239 +0x06: RU864
245 245  
246 -*0x07: AS923
241 +0x07: AS923
247 247  
248 -*0x08: AS923-1
243 +0x08: AS923-1
249 249  
250 -*0x09: AS923-2
245 +0x09: AS923-2
251 251  
252 -*0x0a: AS923-3
247 +0x0a: AS923-3
253 253  
254 -*0x0b: CN470
249 +0x0b: CN470
255 255  
256 -*0x0c: EU433
251 +0x0c: EU433
257 257  
258 -*0x0d: KR920
253 +0x0d: KR920
259 259  
260 -*0x0e: MA869
255 +0x0e: MA869
261 261  
262 262  
263 263  (% style="color:#037691" %)**Sub-Band**:
... ... @@ -333,9 +333,8 @@
333 333  )))|(% style="width:189px" %)(((
334 334  Digital in(PB15) & Digital Interrupt(PA8)
335 335  )))|(% style="width:208px" %)(((
336 -Distance measure by:1) LIDAR-Lite V3HP
337 -Or
338 -2) Ultrasonic Sensor
331 +Distance measure by: 1) LIDAR-Lite V3HP
332 +Or 2) Ultrasonic Sensor
339 339  )))|(% style="width:117px" %)Reserved
340 340  
341 341  [[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"]]
... ... @@ -357,7 +357,7 @@
357 357  
358 358  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
359 359  |(% 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**
360 -|**Value**|BAT|(% style="width:183px" %)(((
354 +|Value|BAT|(% style="width:183px" %)(((
361 361  Temperature(DS18B20)(PC13)
362 362  )))|(% style="width:173px" %)(((
363 363  Digital in(PB15) & Digital Interrupt(PA8)
... ... @@ -365,8 +365,7 @@
365 365  ADC(PA4)
366 366  )))|(% style="width:323px" %)(((
367 367  Distance measure by:1)TF-Mini plus LiDAR
368 -Or 
369 -2) TF-Luna LiDAR
362 +Or 2) TF-Luna LiDAR
370 370  )))|(% style="width:188px" %)Distance signal  strength
371 371  
372 372  [[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"]]
... ... @@ -383,7 +383,7 @@
383 383  
384 384  (% style="color:red" %)**Need to remove R3 and R4 resistors to get low power,otherwise there will be 400uA standby current.**
385 385  
386 -[[image:image-20230513105207-4.png||height="469" width="802"]]
379 +[[image:image-20230610170047-1.png||height="452" width="799"]]
387 387  
388 388  
389 389  ==== 2.3.2.3  MOD~=3 (3 ADC + I2C) ====
... ... @@ -473,7 +473,6 @@
473 473  [[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"]]
474 474  
475 475  
476 -
477 477  ==== 2.3.2.6  MOD~=6 (Counting Mode) ====
478 478  
479 479  
... ... @@ -586,6 +586,79 @@
586 586  When AA is 2, set the count of PA4 pin to BB Corresponding downlink：09 02 bb bb bb bb
587 587  
588 588  
581 +==== 2.3.2.10  MOD~=10 (PWM input capture and output mode，Since firmware v1.2) ====
582 +
583 +(% style="color:red" %)**Note: Firmware not release, contact Dragino for testing.**
584 +
585 +In this mode, the uplink can perform PWM input capture, and the downlink can perform PWM output.
586 +
587 +[[It should be noted when using PWM mode.>>||anchor="H2.3.3.12A0PWMMOD"]]
588 +
589 +
590 +===== 2.3.2.10.a  Uplink, PWM input capture =====
591 +
592 +
593 +[[image:image-20230817172209-2.png||height="439" width="683"]]
594 +
595 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:690px" %)
596 +|(% 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:135px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:70px" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0; width:89px" %)**2**
597 +|Value|Bat|(% style="width:191px" %)(((
598 +Temperature(DS18B20)(PC13)
599 +)))|(% style="width:78px" %)(((
600 +ADC(PA4)
601 +)))|(% style="width:135px" %)(((
602 +PWM_Setting
603 +
604 +&Digital Interrupt(PA8)
605 +)))|(% style="width:70px" %)(((
606 +Pulse period
607 +)))|(% style="width:89px" %)(((
608 +Duration of high level
609 +)))
610 +
611 +[[image:image-20230817170702-1.png||height="161" width="1044"]]
612 +
613 +
614 +When the device detects the following PWM signal ,decoder will converts the pulse period and high-level duration to frequency and duty cycle.
615 +
616 +**Frequency：**
617 +
618 +(% class="MsoNormal" %)
619 +(% lang="EN-US" %)If (% style="background-attachment:initial; background-clip:initial; background-image:initial; background-origin:initial; background-position:initial; background-repeat:initial; background-size:initial; color:blue; font-family:Arial,sans-serif" %)**AT+PWMSET**(%%)**=0, **(% lang="EN-US" %)Frequency= 1000000/(%%)Pulse period（HZ）;
620 +
621 +(% class="MsoNormal" %)
622 +(% lang="EN-US" %)If (% style="background-attachment:initial; background-clip:initial; background-image:initial; background-origin:initial; background-position:initial; background-repeat:initial; background-size:initial; color:blue; font-family:Arial,sans-serif" %)**AT+PWMSET**(%%)**=1, **(% lang="EN-US" %)Frequency= 1000/(%%)Pulse period（HZ）;
623 +
624 +
625 +(% class="MsoNormal" %)
626 +**Duty cycle:**
627 +
628 +Duty cycle= Duration of high level/ Pulse period*100 ~(%).
629 +
630 +[[image:image-20230818092200-1.png||height="344" width="627"]]
631 +
632 +
633 +===== 2.3.2.10.b  Downlink, PWM output =====
634 +
635 +
636 +[[image:image-20230817173800-3.png||height="412" width="685"]]
637 +
638 +Downlink:  (% style="color:#037691" %)**0B xx xx xx yy zz zz**
639 +
640 + xx xx xx is the output frequency, the unit is HZ.
641 +
642 + yy is the duty cycle of the output, the unit is %.
643 +
644 + zz zz is the time delay of the output, the unit is ms.
645 +
646 +
647 +For example, send a downlink command: 0B 00 61 A8 32 13 88, the frequency is 25KHZ, the duty cycle is 50, and the output time is 5 seconds.
648 +
649 +The oscilloscope displays as follows:
650 +
651 +[[image:image-20230817173858-5.png||height="694" width="921"]]
652 +
653 +
589 589  === 2.3.3  ​Decode payload ===
590 590  
591 591  
... ... @@ -649,9 +649,9 @@
649 649  ==== 2.3.3.4  Analogue Digital Converter (ADC) ====
650 650  
651 651  
652 -The measuring range of the ADC is only about 0V to 1.1V The voltage resolution is about 0.24mv.
717 +The measuring range of the ADC is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
653 653  
654 -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.
719 +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.
655 655  
656 656  [[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"]]
657 657  
... ... @@ -659,6 +659,10 @@
659 659  (% 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.**
660 660  
661 661  
727 +The position of PA5 on the hardware after **LSN50 v3.3** is changed to the position shown in the figure below, and the collected voltage becomes one-sixth of the original.
728 +
729 +[[image:image-20230811113449-1.png||height="370" width="608"]]
730 +
662 662  ==== 2.3.3.5 Digital Interrupt ====
663 663  
664 664  
... ... @@ -727,7 +727,7 @@
727 727  
728 728  Below is the connection to SHT20/ SHT31. The connection is as below:
729 729  
730 -[[image:image-20230513103633-3.png||height="448" width="716"]]
799 +[[image:image-20230610170152-2.png||height="501" width="846"]]
731 731  
732 732  
733 733  The device will be able to get the I2C sensor data now and upload to IoT Server.
... ... @@ -805,9 +805,40 @@
805 805  [[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" height="361" width="953"]]
806 806  
807 807  
808 -==== 2.3.3.12  Working MOD ====
877 +==== 2.3.3.12  PWM MOD ====
809 809  
810 810  
880 +* (((
881 +The maximum voltage that the SDA pin of SN50v3 can withstand is 3.6V, and it cannot exceed this voltage value, otherwise the chip may be burned.
882 +)))
883 +* (((
884 +If the PWM pin connected to the SDA pin cannot maintain a high level when it is not working, you need to remove the resistor R2 or replace it with a resistor with a larger resistance, otherwise a sleep current of about 360uA will be generated. The position of the resistor is shown in the figure below:
885 +)))
886 +
887 + [[image:image-20230817183249-3.png||height="320" width="417"]]
888 +
889 +* (((
890 +The signal captured by the input should preferably be processed by hardware filtering and then connected in. The software processing method is to capture four values, discard the first captured value, and then take the middle value of the second, third, and fourth captured values.
891 +)))
892 +* (((
893 +Since the device can only detect a pulse period of 50ms when [[AT+PWMSET=0>>||anchor="H3.3.8PWMsetting"]] (counting in microseconds), it is necessary to change the value of PWMSET according to the frequency of input capture.
894 +)))
895 +* (((
896 +PWM Input allows low power consumption. PWM Output to achieve real-time control, you need to go to Class C. Power consumption will not be low.
897 +
898 +For PWM Output Feature, there are two consideration to see if the device can be powered by battery or have to be powered by external DC.
899 +
900 +a) If needs to realtime control output, SN50v3-LB has be run in CLass C and have to use external power source.
901 +
902 +b) If the output duration is more than 30 seconds, bettert to use external power source. 
903 +
904 +
905 +
906 +)))
907 +
908 +==== 2.3.3.13  Working MOD ====
909 +
910 +
811 811  The working MOD info is contained in the Digital in & Digital Interrupt byte (7^^th^^ Byte).
812 812  
813 813  User can use the 3^^rd^^ ~~ 7^^th^^  bit of this byte to see the working mod:
... ... @@ -823,6 +823,7 @@
823 823  * 6: MOD7
824 824  * 7: MOD8
825 825  * 8: MOD9
926 +* 9: MOD10
826 826  
827 827  == 2.4 Payload Decoder file ==
828 828  
... ... @@ -880,7 +880,7 @@
880 880  (% style="color:blue" %)**AT Command: AT+TDC**
881 881  
882 882  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
883 -|=(% style="width: 156px;background-color:#D9E2F3" %)**Command Example**|=(% style="width: 137px;background-color:#D9E2F3" %)**Function**|=(% style="background-color:#D9E2F3" %)**Response**
984 +|=(% style="width: 156px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 137px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="background-color:#D9E2F3;color:#0070C0" %)**Response**
884 884  |(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((
885 885  30000
886 886  OK
... ... @@ -918,7 +918,7 @@
918 918  (% style="color:blue" %)**AT Command: AT+INTMOD1，AT+INTMOD2，AT+INTMOD3**
919 919  
920 920  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
921 -|=(% style="width: 155px;background-color:#D9E2F3" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3" %)**Response**
1022 +|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Response**
922 922  |(% style="width:154px" %)AT+INTMOD1=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
923 923  0
924 924  OK
... ... @@ -962,7 +962,7 @@
962 962  (% style="color:blue" %)**AT Command: AT+5VT**
963 963  
964 964  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
965 -|=(% style="width: 155px;background-color:#D9E2F3" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3" %)**Response**
1066 +|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Response**
966 966  |(% style="width:154px" %)AT+5VT=?|(% style="width:196px" %)Show 5V open time.|(% style="width:157px" %)(((
967 967  500(default)
968 968  OK
... ... @@ -988,7 +988,7 @@
988 988  (% style="color:blue" %)**AT Command: AT+WEIGRE,AT+WEIGAP**
989 989  
990 990  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
991 -|=(% style="width: 155px;background-color:#D9E2F3" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3" %)**Response**
1092 +|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Response**
992 992  |(% style="width:154px" %)AT+WEIGRE|(% style="width:196px" %)Weight is initialized to 0.|(% style="width:157px" %)OK
993 993  |(% style="width:154px" %)AT+WEIGAP=？|(% style="width:196px" %)400.0|(% style="width:157px" %)OK(default)
994 994  |(% style="width:154px" %)AT+WEIGAP=400.3|(% style="width:196px" %)Set the factor to 400.3.|(% style="width:157px" %)OK
... ... @@ -1015,7 +1015,7 @@
1015 1015  (% style="color:blue" %)**AT Command: AT+SETCNT**
1016 1016  
1017 1017  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
1018 -|=(% style="width: 155px;background-color:#D9E2F3" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3" %)**Response**
1119 +|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Response**
1019 1019  |(% style="width:154px" %)AT+SETCNT=1,100|(% style="width:196px" %)Initialize the count value 1 to 100.|(% style="width:157px" %)OK
1020 1020  |(% style="width:154px" %)AT+SETCNT=2,0|(% style="width:196px" %)Initialize the count value 2 to 0.|(% style="width:157px" %)OK
1021 1021  
... ... @@ -1036,7 +1036,7 @@
1036 1036  (% style="color:blue" %)**AT Command: AT+MOD**
1037 1037  
1038 1038  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
1039 -|=(% style="width: 155px;background-color:#D9E2F3" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3" %)**Response**
1140 +|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Response**
1040 1040  |(% style="width:154px" %)AT+MOD=?|(% style="width:196px" %)Get the current working mode.|(% style="width:157px" %)(((
1041 1041  OK
1042 1042  )))
... ... @@ -1052,6 +1052,33 @@
1052 1052  * Example 1: Downlink Payload: 0A01  **~-~-->**  AT+MOD=1
1053 1053  * Example 2: Downlink Payload: 0A04  **~-~-->**  AT+MOD=4
1054 1054  
1156 +=== 3.3.8 PWM setting ===
1157 +
1158 +
1159 +Feature: Set the time acquisition unit for PWM input capture.
1160 +
1161 +(% style="color:blue" %)**AT Command: AT+PWMSET**
1162 +
1163 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
1164 +|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Response**
1165 +|(% style="width:154px" %)AT+PWMSET=?|(% style="width:196px" %)0|(% style="width:157px" %)(((
1166 +0(default)
1167 +
1168 +OK
1169 +)))
1170 +|(% style="width:154px" %)AT+PWMSET=0|(% style="width:196px" %)The unit of PWM capture time is microsecond. The capture frequency range is between 20HZ and 100000HZ.   |(% style="width:157px" %)(((
1171 +OK
1172 +
1173 +)))
1174 +|(% style="width:154px" %)AT+PWMSET=1|(% style="width:196px" %)The unit of PWM capture time is millisecond.  The capture frequency range is between 5HZ and 250HZ. |(% style="width:157px" %)OK
1175 +
1176 +(% style="color:blue" %)**Downlink Command: 0x0C**
1177 +
1178 +Format: Command Code (0x0C) followed by 1 bytes.
1179 +
1180 +* Example 1: Downlink Payload: 0C00  **~-~-->**  AT+PWMSET=0
1181 +* Example 2: Downlink Payload: 0C01  **~-~-->**  AT+PWMSET=1
1182 +
1055 1055  = 4. Battery & Power Consumption =
1056 1056  
1057 1057  
... ... @@ -1070,12 +1070,12 @@
1070 1070  * Update with new features.
1071 1071  * Fix bugs.
1072 1072  
1073 -**Firmware and changelog can be downloaded from :** **[[Firmware download link>>url:https://www.dropbox.com/sh/kwqv57tp6pejias/AAAopYMATh1GM6fZ-VRCLrpDa?dl=0]]**
1201 +**Firmware and changelog can be downloaded from :** **[[Firmware download link>>https://www.dropbox.com/sh/4rov7bcp6u28exp/AACt-wAySd4si5AXi8DBmvSca?dl=0]]**
1074 1074  
1075 1075  **Methods to Update Firmware:**
1076 1076  
1077 -* (Recommanded way) OTA firmware update via wireless:   [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]]
1078 -* Update through UART TTL interface.**[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]**.
1205 +* (Recommanded way) OTA firmware update via wireless: **[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]]**
1206 +* Update through UART TTL interface: **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]**.
1079 1079  
1080 1080  = 6. FAQ =
1081 1081  
... ... @@ -1085,6 +1085,22 @@
1085 1085  * **[[Hardware Source Files>>https://github.com/dragino/Lora/tree/master/LSN50/v3.0]].**
1086 1086  * **[[Software Source Code & Compile instruction>>https://github.com/dragino/SN50v3]].**
1087 1087  
1216 +== 6.2 How to generate PWM Output in SN50v3-LB? ==
1217 +
1218 +
1219 +See this document: **[[Generate PWM Output on SN50v3>>https://www.dropbox.com/scl/fi/r3trcet2knujg40w0mgyn/Generate-PWM-Output-on-SN50v3.pdf?rlkey=rxsgmrhhrv62iiiwjq9sv10bn&dl=0]]**.
1220 +
1221 +
1222 +== 6.3 How to put several sensors to a SN50v3-LB? ==
1223 +
1224 +
1225 +When we want to put several sensors to A SN50v3-LB, the waterproof at the grand connector will become an issue. User can try to exchange the grand connector to below type.
1226 +
1227 +[[Reference Supplier>>https://www.yscableglands.com/cable-glands/nylon-cable-glands/cable-gland-rubber-seal.html]].
1228 +
1229 +[[image:image-20230810121434-1.png||height="242" width="656"]]
1230 +
1231 +
1088 1088  = 7. Order Info =
1089 1089  
1090 1090  
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