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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 173.2
edited by Xiaoling
on 2022/06/15 10:10
Change comment: There is no comment for this version
To version 175.14
edited by Xiaoling
on 2022/06/15 11:00
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -100,7 +100,6 @@
100 100  * IP66 Waterproof Enclosure
101 101  * 8500mAh Battery for long term use
102 102  
103 -
104 104  == 1.3  Suitable Container & Liquid ==
105 105  
106 106  * Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
... ... @@ -110,7 +110,6 @@
110 110  ** Pure non metal material: <10 mm
111 111  * Pure liquid without irregular deposition.
112 112  
113 -
114 114  == 1.4  Mechanical ==
115 115  
116 116  [[image:image-20220615090910-1.png]]
... ... @@ -200,8 +200,6 @@
200 200  * Smart liquid control solution.
201 201  * Smart liquefied gas solution.
202 202  
203 -
204 -
205 205  == 1.7  Precautions ==
206 206  
207 207  * At room temperature, containers of different materials, such as steel, glass, iron, ceramics, non-foamed plastics and other dense materials, have different detection blind areas and detection limit heights.
... ... @@ -208,8 +208,6 @@
208 208  * For containers of the same material at room temperature, the detection blind zone and detection limit height are also different for the thickness of the container.
209 209  * When the detected liquid level exceeds the effective detection value of the sensor, and the liquid level of the liquid to be measured shakes or tilts, the detected liquid height is unstable.
210 210  
211 -
212 -
213 213  == 1.8  Pin mapping and power on ==
214 214  
215 215  
... ... @@ -368,8 +368,6 @@
368 368  * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
369 369  * If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
370 370  
371 -
372 -
373 373  === 2.3.3  Interrupt Pin ===
374 374  
375 375  This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.2A0SetInterruptMode"]] for the hardware and software set up.
... ... @@ -413,7 +413,7 @@
413 413  While using TTN network, you can add the payload format to decode the payload.
414 414  
415 415  
416 -[[image:1654850829385-439.png]]
408 +[[image:1655261164557-670.png]]
417 417  
418 418  The payload decoder function for TTN V3 is here:
419 419  
... ... @@ -433,7 +433,7 @@
433 433  **Examples:**
434 434  
435 435  
436 -* **Set TDC**
428 +* (% style="color:blue" %)**Set TDC**
437 437  
438 438  If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
439 439  
... ... @@ -442,12 +442,12 @@
442 442  Payload:    01 00 00 3C    TDC=60S
443 443  
444 444  
445 -* **Reset**
437 +* (% style="color:blue" %)**Reset**
446 446  
447 447  If payload = 0x04FF, it will reset the LDDS20
448 448  
449 449  
450 -* **CFM**
442 +* (% style="color:blue" %)**CFM**
451 451  
452 452  Downlink Payload: 05000001, Set AT+CFM=1 or 05000000 , set AT+CFM=0
453 453  
... ... @@ -480,7 +480,7 @@
480 480  
481 481  (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
482 482  
483 -(% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
475 +(% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.(% style="color:red" %)(Note: LDDS20 use same payload as LDDS75)(%%)**
484 484  
485 485  [[image:1654851029373-510.png]]
486 486  
... ... @@ -491,682 +491,227 @@
491 491  
492 492  
493 493  
494 -== 2.6  Frequency Plans ==
486 +== 2.6  LED Indicator ==
495 495  
496 -(((
497 -The LDDS75 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.
498 -)))
488 +The LDDS20 has an internal LED which is to show the status of different state.
499 499  
500 500  
491 +* Blink once when device power on.
492 +* The device detects the sensor and flashes 5 times.
493 +* Solid ON for 5 seconds once device successful Join the network.
494 +* Blink once when device transmit a packet.
501 501  
502 -=== 2.6.1  EU863-870 (EU868) ===
496 +== 2.7  ​Firmware Change Log ==
503 503  
504 -(((
505 -(% style="color:blue" %)**Uplink:**
506 -)))
507 507  
508 508  (((
509 -868.1 - SF7BW125 to SF12BW125
500 +**Firmware download link:  **[[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/]]
510 510  )))
511 511  
512 512  (((
513 -868.3 - SF7BW125 to SF12BW125 and SF7BW250
514 -)))
515 -
516 -(((
517 -868.5 - SF7BW125 to SF12BW125
518 -)))
519 -
520 -(((
521 -867.1 - SF7BW125 to SF12BW125
522 -)))
523 -
524 -(((
525 -867.3 - SF7BW125 to SF12BW125
526 -)))
527 -
528 -(((
529 -867.5 - SF7BW125 to SF12BW125
530 -)))
531 -
532 -(((
533 -867.7 - SF7BW125 to SF12BW125
534 -)))
535 -
536 -(((
537 -867.9 - SF7BW125 to SF12BW125
538 -)))
539 -
540 -(((
541 -868.8 - FSK
542 -)))
543 -
544 -(((
545 545  
546 546  )))
547 547  
548 548  (((
549 -(% style="color:blue" %)**Downlink:**
508 +**Firmware Upgrade Method:  [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]**
550 550  )))
551 551  
552 -(((
553 -Uplink channels 1-9 (RX1)
554 -)))
555 555  
556 -(((
557 -869.525 - SF9BW125 (RX2 downlink only)
558 -)))
559 559  
513 +== 2.8  Battery Analysis ==
560 560  
561 561  
562 -=== 2.6.2  US902-928(US915) ===
563 563  
564 -(((
565 -Used in USA, Canada and South America. Default use CHE=2
566 566  
567 -(% style="color:blue" %)**Uplink:**
518 +=== 2.8.1  Battery Type ===
568 568  
569 -903.9 - SF7BW125 to SF10BW125
520 +The LDDS20 battery is a combination of a 8500mAh 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.
570 570  
571 -904.1 - SF7BW125 to SF10BW125
572 572  
573 -904.3 - SF7BW125 to SF10BW125
523 +The battery related documents as below:
574 574  
575 -904.5 - SF7BW125 to SF10BW125
576 -
577 -904.7 - SF7BW125 to SF10BW125
578 -
579 -904.9 - SF7BW125 to SF10BW125
580 -
581 -905.1 - SF7BW125 to SF10BW125
582 -
583 -905.3 - SF7BW125 to SF10BW125
584 -
585 -
586 -(% style="color:blue" %)**Downlink:**
587 -
588 -923.3 - SF7BW500 to SF12BW500
589 -
590 -923.9 - SF7BW500 to SF12BW500
591 -
592 -924.5 - SF7BW500 to SF12BW500
593 -
594 -925.1 - SF7BW500 to SF12BW500
595 -
596 -925.7 - SF7BW500 to SF12BW500
597 -
598 -926.3 - SF7BW500 to SF12BW500
599 -
600 -926.9 - SF7BW500 to SF12BW500
601 -
602 -927.5 - SF7BW500 to SF12BW500
603 -
604 -923.3 - SF12BW500(RX2 downlink only)
605 -
606 -
607 -
525 +* (((
526 +[[Battery Dimension>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
608 608  )))
609 -
610 -=== 2.6.3  CN470-510 (CN470) ===
611 -
612 -(((
613 -Used in China, Default use CHE=1
528 +* (((
529 +[[Lithium-Thionyl Chloride Battery  datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
614 614  )))
615 -
616 -(((
617 -(% style="color:blue" %)**Uplink:**
531 +* (((
532 +[[Lithium-ion Battery-Capacitor datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
618 618  )))
619 619  
620 -(((
621 -486.3 - SF7BW125 to SF12BW125
622 -)))
535 + [[image:image-20220615102527-16.png]]
623 623  
624 -(((
625 -486.5 - SF7BW125 to SF12BW125
626 -)))
627 627  
628 -(((
629 -486.7 - SF7BW125 to SF12BW125
630 -)))
631 631  
632 -(((
633 -486.9 - SF7BW125 to SF12BW125
634 -)))
539 +== 2.8.2  Battery Note ==
635 635  
636 -(((
637 -487.1 - SF7BW125 to SF12BW125
638 -)))
541 +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 uplink data, then the battery life may be decreased.
639 639  
640 -(((
641 -487.3 - SF7BW125 to SF12BW125
642 -)))
643 643  
644 -(((
645 -487.5 - SF7BW125 to SF12BW125
646 -)))
647 647  
648 -(((
649 -487.7 - SF7BW125 to SF12BW125
650 -)))
545 +=== 2.8.3  Replace the battery ===
651 651  
652 652  (((
653 -
548 +You can change the battery in the LDDS75.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.
654 654  )))
655 655  
656 656  (((
657 -(% style="color:blue" %)**Downlink:**
658 -)))
659 -
660 -(((
661 -506.7 - SF7BW125 to SF12BW125
662 -)))
663 -
664 -(((
665 -506.9 - SF7BW125 to SF12BW125
666 -)))
667 -
668 -(((
669 -507.1 - SF7BW125 to SF12BW125
670 -)))
671 -
672 -(((
673 -507.3 - SF7BW125 to SF12BW125
674 -)))
675 -
676 -(((
677 -507.5 - SF7BW125 to SF12BW125
678 -)))
679 -
680 -(((
681 -507.7 - SF7BW125 to SF12BW125
682 -)))
683 -
684 -(((
685 -507.9 - SF7BW125 to SF12BW125
686 -)))
687 -
688 -(((
689 -508.1 - SF7BW125 to SF12BW125
690 -)))
691 -
692 -(((
693 -505.3 - SF12BW125 (RX2 downlink only)
694 -)))
695 -
696 -
697 -
698 -=== 2.6.4  AU915-928(AU915) ===
699 -
700 -(((
701 -Default use CHE=2
702 -
703 -(% style="color:blue" %)**Uplink:**
704 -
705 -916.8 - SF7BW125 to SF12BW125
706 -
707 -917.0 - SF7BW125 to SF12BW125
708 -
709 -917.2 - SF7BW125 to SF12BW125
710 -
711 -917.4 - SF7BW125 to SF12BW125
712 -
713 -917.6 - SF7BW125 to SF12BW125
714 -
715 -917.8 - SF7BW125 to SF12BW125
716 -
717 -918.0 - SF7BW125 to SF12BW125
718 -
719 -918.2 - SF7BW125 to SF12BW125
720 -
721 -
722 -(% style="color:blue" %)**Downlink:**
723 -
724 -923.3 - SF7BW500 to SF12BW500
725 -
726 -923.9 - SF7BW500 to SF12BW500
727 -
728 -924.5 - SF7BW500 to SF12BW500
729 -
730 -925.1 - SF7BW500 to SF12BW500
731 -
732 -925.7 - SF7BW500 to SF12BW500
733 -
734 -926.3 - SF7BW500 to SF12BW500
735 -
736 -926.9 - SF7BW500 to SF12BW500
737 -
738 -927.5 - SF7BW500 to SF12BW500
739 -
740 -923.3 - SF12BW500(RX2 downlink only)
741 -
742 -
743 743  
744 744  )))
745 745  
746 -=== 2.6.5  AS920-923 & AS923-925 (AS923) ===
747 -
748 748  (((
749 -(% style="color:blue" %)**Default Uplink channel:**
556 +The default battery pack of LDDS75 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)
750 750  )))
751 751  
752 -(((
753 -923.2 - SF7BW125 to SF10BW125
754 -)))
755 755  
756 -(((
757 -923.4 - SF7BW125 to SF10BW125
758 -)))
759 759  
760 -(((
761 -
762 -)))
561 +== 2.8.4  Battery Life Analyze ==
763 763  
764 -(((
765 -(% style="color:blue" %)**Additional Uplink Channel**:
766 -)))
563 +Dragino battery powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimate battery life:
767 767  
768 -(((
769 -(OTAA mode, channel added by JoinAccept message)
770 -)))
565 +[[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]
771 771  
772 -(((
773 -
774 -)))
775 775  
776 -(((
777 -(% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
778 -)))
779 779  
780 -(((
781 -922.2 - SF7BW125 to SF10BW125
782 -)))
569 += 3.  Using the AT Commands =
783 783  
784 784  (((
785 -922.4 - SF7BW125 to SF10BW125
786 -)))
787 -
788 788  (((
789 -922.6 - SF7BW125 to SF10BW125
790 -)))
791 -
792 -(((
793 -922.8 - SF7BW125 to SF10BW125
794 -)))
795 -
796 -(((
797 -923.0 - SF7BW125 to SF10BW125
798 -)))
799 -
800 -(((
801 -922.0 - SF7BW125 to SF10BW125
802 -)))
803 -
804 -(((
805 805  
806 806  )))
807 -
808 -(((
809 -(% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
810 810  )))
811 811  
812 -(((
813 -923.6 - SF7BW125 to SF10BW125
814 -)))
577 +== 3.1  Access AT Commands ==
815 815  
816 -(((
817 -923.8 - SF7BW125 to SF10BW125
818 -)))
579 +LDDS20 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LDDS20 for using AT command, as below.
819 819  
820 -(((
821 -924.0 - SF7BW125 to SF10BW125
822 -)))
823 823  
824 -(((
825 -924.2 - SF7BW125 to SF10BW125
826 -)))
582 +[[image:image-20220610172924-4.png||height="483" width="988"]]
827 827  
828 -(((
829 -924.4 - SF7BW125 to SF10BW125
830 -)))
831 831  
832 -(((
833 -924.6 - SF7BW125 to SF10BW125
834 -)))
585 +Or if you have below board, use below connection:
835 835  
836 -(((
837 -
838 -)))
839 839  
840 -(((
841 -(% style="color:blue" %)**Downlink:**
842 -)))
588 +[[image:image-20220610172924-5.png]]
843 843  
844 -(((
845 -Uplink channels 1-8 (RX1)
846 -)))
847 847  
848 848  (((
849 -923.2 - SF10BW125 (RX2)
592 +In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LDDS20. LDDS20 will output system info once power on as below:
850 850  )))
851 851  
852 852  
596 + [[image:image-20220610172924-6.png||height="601" width="860"]]
853 853  
854 -=== 2.6.6  KR920-923 (KR920) ===
598 +Below are the available commands, a more detailed AT Command manual can be found at [[AT Command Manual>>https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/]].
855 855  
856 -(((
857 -(% style="color:blue" %)**Default channel:**
858 -)))
859 859  
860 -(((
861 -922.1 - SF7BW125 to SF12BW125
862 -)))
601 +AT+<CMD>?  :  Help on <CMD>
863 863  
864 -(((
865 -922.3 - SF7BW125 to SF12BW125
866 -)))
603 +AT+<CMD>  :  Run <CMD>
867 867  
868 -(((
869 -922.5 - SF7BW125 to SF12BW125
870 -)))
605 +AT+<CMD>=<value>  :  Set the value
871 871  
872 -(((
873 -
874 -)))
607 +AT+<CMD>=?  :  Get the value
875 875  
876 -(((
877 -(% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
878 -)))
879 879  
880 -(((
881 -922.1 - SF7BW125 to SF12BW125
882 -)))
610 +(% style="color:#037691" %)** General Commands :**     
883 883  
884 -(((
885 -922.3 - SF7BW125 to SF12BW125
886 -)))
612 +AT  :  Attention       
887 887  
888 -(((
889 -922.5 - SF7BW125 to SF12BW125
890 -)))
614 +AT?  :  Short Help     
891 891  
892 -(((
893 -922.7 - SF7BW125 to SF12BW125
894 -)))
616 +ATZ :  MCU Reset    
895 895  
896 -(((
897 -922.9 - SF7BW125 to SF12BW125
898 -)))
618 +AT+TDC :  Application Data Transmission Interval 
899 899  
900 -(((
901 -923.1 - SF7BW125 to SF12BW125
902 -)))
903 903  
904 -(((
905 -923.3 - SF7BW125 to SF12BW125
906 -)))
621 +(% style="color:#037691" %)** Keys, IDs and EUIs management :**
907 907  
908 -(((
909 -
910 -)))
623 +AT+APPEUI  :  Application EUI      
911 911  
912 -(((
913 -(% style="color:blue" %)**Downlink:**
914 -)))
625 +AT+APPKEY  :  Application Key     
915 915  
916 -(((
917 -Uplink channels 1-7(RX1)
918 -)))
627 +AT+APPSKEY  :  Application Session Key
919 919  
920 -(((
921 -921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
922 -)))
629 +AT+DADDR :  Device Address     
923 923  
631 +AT+DEUI :  Device EUI     
924 924  
633 +AT+NWKID  :  Network ID (You can enter this command change only after successful network connection) 
925 925  
926 -=== 2.6.7  IN865-867 (IN865) ===
635 +AT+NWKSKEY  : Network Session Key Joining and sending date on LoRa network  
927 927  
928 -(((
929 -(% style="color:blue" %)**Uplink:**
930 -)))
637 +AT+CFM :  Confirm Mode       
931 931  
932 -(((
933 -865.0625 - SF7BW125 to SF12BW125
934 -)))
639 +AT+CFS :  Confirm Status       
935 935  
936 -(((
937 -865.4025 - SF7BW125 to SF12BW125
938 -)))
641 +AT+JOIN  :  Join LoRa? Network       
939 939  
940 -(((
941 -865.9850 - SF7BW125 to SF12BW125
942 -)))
643 +AT+NJM  :  LoRa? Network Join Mode    
943 943  
944 -(((
945 -
946 -)))
645 +AT+NJS  :  LoRa? Network Join Status    
947 947  
948 -(((
949 -(% style="color:blue" %)**Downlink:**
950 -)))
647 +AT+RECV  :  Print Last Received Data in Raw Format
951 951  
952 -(((
953 -Uplink channels 1-3 (RX1)
954 -)))
649 +AT+RECVB :  Print Last Received Data in Binary Format      
955 955  
956 -(((
957 -866.550 - SF10BW125 (RX2)
958 -)))
651 +AT+SEND  :  Send Text Data      
959 959  
653 +AT+SENB  :  Send Hexadecimal Data
960 960  
961 961  
962 -== 2.7  LED Indicator ==
656 +(% style="color:#037691" %)** LoRa Network Management :**
963 963  
964 -The LDDS75 has an internal LED which is to show the status of different state.
658 +AT+ADR  :  Adaptive Rate
965 965  
660 +AT+CLASS  :  LoRa Class(Currently only support class A
966 966  
967 -* Blink once when device power on.
968 -* The device detects the sensor and flashes 5 times.
969 -* Solid ON for 5 seconds once device successful Join the network.
970 -* Blink once when device transmit a packet.
662 +AT+DCS  :  Duty Cycle Setting 
971 971  
972 -== 2.8  ​Firmware Change Log ==
664 +AT+DR  :  Data Rate (Can Only be Modified after ADR=0)     
973 973  
666 +AT+FCD  :  Frame Counter Downlink       
974 974  
975 -(((
976 -**Firmware download link: **[[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/]]
977 -)))
668 +AT+FCU  :  Frame Counter Uplink   
978 978  
979 -(((
980 -
981 -)))
670 +AT+JN1DL  :  Join Accept Delay1
982 982  
983 -(((
984 -**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
985 -)))
672 +AT+JN2DL  :  Join Accept Delay2
986 986  
674 +AT+PNM  :  Public Network Mode   
987 987  
676 +AT+RX1DL  :  Receive Delay1      
988 988  
989 -== 2.9  Mechanical ==
678 +AT+RX2DL  :  Receive Delay2      
990 990  
680 +AT+RX2DR  :  Rx2 Window Data Rate 
991 991  
992 -[[image:image-20220610172003-1.png]]
682 +AT+RX2FQ  :  Rx2 Window Frequency
993 993  
684 +AT+TXP  :  Transmit Power
994 994  
995 -[[image:image-20220610172003-2.png]]
996 996  
687 +(% style="color:#037691" %)** Information :**
997 997  
689 +AT+RSSI  :  RSSI of the Last Received Packet   
998 998  
999 -== 2.10  Battery Analysis ==
691 +AT+SNR  :  SNR of the Last Received Packet   
1000 1000  
1001 -=== 2.10.1  Battery Type ===
693 +AT+VER  :  Image Version and Frequency Band       
1002 1002  
1003 -The LDDS75 battery is a combination of a 4000mAh or 8500mAh 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.
695 +AT+FDR  :  Factory Data Reset
1004 1004  
697 +AT+PORT  :  Application Port    
1005 1005  
1006 -The battery related documents as below:
699 +AT+CHS  :  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1007 1007  
1008 -* (((
1009 -[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
1010 -)))
1011 -* (((
1012 -[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
1013 -)))
1014 -* (((
1015 -[[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]]
1016 -)))
701 + AT+CHE  :  Get or Set eight channels mode, Only for US915, AU915, CN470
1017 1017  
1018 - [[image:image-20220610172400-3.png]]
1019 1019  
1020 1020  
705 +== 3.2  Set Interrupt Mode ==
1021 1021  
1022 -=== 2.10.2  Replace the battery ===
1023 -
1024 -(((
1025 -You can change the battery in the LDDS75.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.
1026 -)))
1027 -
1028 -(((
1029 -
1030 -)))
1031 -
1032 -(((
1033 -The default battery pack of LDDS75 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)
1034 -)))
1035 -
1036 -
1037 -
1038 -= 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
1039 -
1040 -(((
1041 -(((
1042 -Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
1043 -)))
1044 -)))
1045 -
1046 -* (((
1047 -(((
1048 -AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
1049 -)))
1050 -)))
1051 -* (((
1052 -(((
1053 -LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1054 -)))
1055 -)))
1056 -
1057 -(((
1058 -(((
1059 -
1060 -)))
1061 -
1062 -(((
1063 -There are two kinds of commands to configure LDDS75, they are:
1064 -)))
1065 -)))
1066 -
1067 -* (((
1068 -(((
1069 -(% style="color:#4f81bd" %)** General Commands**.
1070 -)))
1071 -)))
1072 -
1073 -(((
1074 -(((
1075 -These commands are to configure:
1076 -)))
1077 -)))
1078 -
1079 -* (((
1080 -(((
1081 -General system settings like: uplink interval.
1082 -)))
1083 -)))
1084 -* (((
1085 -(((
1086 -LoRaWAN protocol & radio related command.
1087 -)))
1088 -)))
1089 -
1090 -(((
1091 -(((
1092 -They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
1093 -)))
1094 -)))
1095 -
1096 -(((
1097 -(((
1098 -
1099 -)))
1100 -)))
1101 -
1102 -* (((
1103 -(((
1104 -(% style="color:#4f81bd" %)** Commands special design for LDDS75**
1105 -)))
1106 -)))
1107 -
1108 -(((
1109 -(((
1110 -These commands only valid for LDDS75, as below:
1111 -)))
1112 -)))
1113 -
1114 -
1115 -
1116 -== 3.1  Access AT Commands ==
1117 -
1118 -LDDS75 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LDDS75 for using AT command, as below.
1119 -
1120 -[[image:image-20220610172924-4.png||height="483" width="988"]]
1121 -
1122 -
1123 -Or if you have below board, use below connection:
1124 -
1125 -
1126 -[[image:image-20220610172924-5.png]]
1127 -
1128 -
1129 -(((
1130 -In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LDDS75. LDDS75 will output system info once power on as below:
1131 -)))
1132 -
1133 -
1134 - [[image:image-20220610172924-6.png||height="601" width="860"]]
1135 -
1136 -
1137 -
1138 -== 3.2  Set Transmit Interval Time ==
1139 -
1140 -Feature: Change LoRaWAN End Node Transmit Interval.
1141 -
1142 -(% style="color:#037691" %)**AT Command: AT+TDC**
1143 -
1144 -[[image:image-20220610173409-7.png]]
1145 -
1146 -
1147 -(((
1148 -(% style="color:#037691" %)**Downlink Command: 0x01**
1149 -)))
1150 -
1151 -(((
1152 -(((
1153 -Format: Command Code (0x01) followed by 3 bytes time value.
1154 -
1155 -(((
1156 -If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1157 -)))
1158 -
1159 -* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1160 -* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1161 -)))
1162 -)))
1163 -
1164 -
1165 -
1166 -
1167 -
1168 -== 3.3  Set Interrupt Mode ==
1169 -
1170 1170  Feature, Set Interrupt mode for GPIO_EXIT.
1171 1171  
1172 1172  (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
... ... @@ -1185,27 +1185,22 @@
1185 1185  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1186 1186  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1187 1187  
725 +
1188 1188  = 4.  FAQ =
1189 1189  
1190 -== 4.1  What is the frequency plan for LDDS75? ==
728 +== 4.1  What is the frequency plan for LDDS20? ==
1191 1191  
1192 -LDDS75 use the same frequency as other Dragino products. User can see the detail from this link:  [[Introduction>>doc:Main.End Device Frequency Band.WebHome||anchor="H1.Introduction"]]
730 +LDDS20 use the same frequency as other Dragino products. User can see the detail from this link:  [[Introduction>>doc:Main.End Device Frequency Band.WebHome||anchor="H1.Introduction"]]
1193 1193  
1194 1194  
1195 1195  
1196 1196  == 4.2  How to change the LoRa Frequency Bands/Region ==
1197 1197  
1198 -You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
736 +You can follow the instructions for [[how to upgrade image>>||anchor="H2.7A0200BFirmwareChangeLog"]].
1199 1199  When downloading the images, choose the required image file for download. ​
1200 1200  
1201 1201  
1202 1202  
1203 -== 4.3  Can I use LDDS75 in condensation environment? ==
1204 -
1205 -LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1206 -
1207 -
1208 -
1209 1209  = 5.  Trouble Shooting =
1210 1210  
1211 1211  == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
... ... @@ -1225,7 +1225,7 @@
1225 1225  = 6.  Order Info =
1226 1226  
1227 1227  
1228 -Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
760 +Part Number **:** (% style="color:blue" %)**LDDS20-XX**
1229 1229  
1230 1230  
1231 1231  (% style="color:blue" %)**XX**(%%)**: **The default frequency band
... ... @@ -1239,10 +1239,7 @@
1239 1239  * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1240 1240  * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1241 1241  
1242 -(% style="color:blue" %)**YY**(%%): Battery Option
1243 1243  
1244 -* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1245 -* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1246 1246  
1247 1247  = 7. ​ Packing Info =
1248 1248  
... ... @@ -1258,6 +1258,8 @@
1258 1258  * Package Size / pcs : cm
1259 1259  * Weight / pcs : g
1260 1260  
790 +
791 +
1261 1261  = 8.  ​Support =
1262 1262  
1263 1263  * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
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