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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 173.1
edited by Xiaoling
on 2022/06/15 10:09
Change comment: Uploaded new attachment "image-20220615100930-15.png", version {1}
To version 174.10
edited by Xiaoling
on 2022/06/15 10:44
Change comment: There is no comment for this version

Summary

Details

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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  
... ... @@ -423,694 +423,295 @@
423 423  
424 424  
425 425  
426 -== 2.4  Uplink Interval ==
420 +== 2.4  Downlink Payload ==
427 427  
428 -The LDDS75 by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link: [[Change Uplink Interval>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H4.1ChangeUplinkInterval"]]
422 +By default, LDDS20 prints the downlink payload to console port.
429 429  
424 +[[image:image-20220615100930-15.png]]
430 430  
431 431  
432 -== 2.5  ​Show Data in DataCake IoT Server ==
427 +**Examples:**
433 433  
434 -(((
435 -[[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, once we have data in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps:
436 -)))
437 437  
438 -(((
439 -
440 -)))
430 +* (% style="color:blue" %)**Set TDC**
441 441  
442 -(((
443 -(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
444 -)))
432 +If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
445 445  
446 -(((
447 -(% style="color:blue" %)**Step 2**(%%)**: To configure the Application to forward data to DATACAKE you will need to add integration. To add the DATACAKE integration, perform the following steps:**
448 -)))
434 +Payload:    01 00 00 1E    TDC=30S
449 449  
436 +Payload:    01 00 00 3C    TDC=60S
450 450  
451 -[[image:1654592790040-760.png]]
452 452  
439 +* (% style="color:blue" %)**Reset**
453 453  
454 -[[image:1654592800389-571.png]]
441 +If payload = 0x04FF, it will reset the LDDS20
455 455  
456 456  
457 -(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
444 +* (% style="color:blue" %)**CFM**
458 458  
459 -(% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
446 +Downlink Payload: 05000001, Set AT+CFM=1 or 05000000 , set AT+CFM=0
460 460  
461 -[[image:1654851029373-510.png]]
462 462  
463 463  
464 -After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
450 +== 2.5  ​Show Data in DataCake IoT Server ==
465 465  
466 -[[image:image-20220610165129-11.png||height="595" width="1088"]]
467 -
468 -
469 -
470 -== 2.6  Frequency Plans ==
471 -
472 472  (((
473 -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.
453 +[[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, once we have data in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps:
474 474  )))
475 475  
476 -
477 -
478 -=== 2.6.1  EU863-870 (EU868) ===
479 -
480 480  (((
481 -(% style="color:blue" %)**Uplink:**
482 -)))
483 -
484 -(((
485 -868.1 - SF7BW125 to SF12BW125
486 -)))
487 -
488 -(((
489 -868.3 - SF7BW125 to SF12BW125 and SF7BW250
490 -)))
491 -
492 -(((
493 -868.5 - SF7BW125 to SF12BW125
494 -)))
495 -
496 -(((
497 -867.1 - SF7BW125 to SF12BW125
498 -)))
499 -
500 -(((
501 -867.3 - SF7BW125 to SF12BW125
502 -)))
503 -
504 -(((
505 -867.5 - SF7BW125 to SF12BW125
506 -)))
507 -
508 -(((
509 -867.7 - SF7BW125 to SF12BW125
510 -)))
511 -
512 -(((
513 -867.9 - SF7BW125 to SF12BW125
514 -)))
515 -
516 -(((
517 -868.8 - FSK
518 -)))
519 -
520 -(((
521 521  
522 522  )))
523 523  
524 524  (((
525 -(% style="color:blue" %)**Downlink:**
461 +(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
526 526  )))
527 527  
528 528  (((
529 -Uplink channels 1-9 (RX1)
465 +(% style="color:blue" %)**Step 2**(%%)**: To configure the Application to forward data to DATACAKE you will need to add integration. To add the DATACAKE integration, perform the following steps:**
530 530  )))
531 531  
532 -(((
533 -869.525 - SF9BW125 (RX2 downlink only)
534 -)))
535 535  
469 +[[image:1654592790040-760.png]]
536 536  
537 537  
538 -=== 2.6.2  US902-928(US915) ===
472 +[[image:1654592800389-571.png]]
539 539  
540 -(((
541 -Used in USA, Canada and South America. Default use CHE=2
542 542  
543 -(% style="color:blue" %)**Uplink:**
475 +(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
544 544  
545 -903.9 - SF7BW125 to SF10BW125
477 +(% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.(% style="color:red" %)(Note: LDDS20 use same payload as LDDS75)(%%)**
546 546  
547 -904.1 - SF7BW125 to SF10BW125
479 +[[image:1654851029373-510.png]]
548 548  
549 -904.3 - SF7BW125 to SF10BW125
550 550  
551 -904.5 - SF7BW125 to SF10BW125
482 +After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
552 552  
553 -904.7 - SF7BW125 to SF10BW125
484 +[[image:image-20220610165129-11.png||height="595" width="1088"]]
554 554  
555 -904.9 - SF7BW125 to SF10BW125
556 556  
557 -905.1 - SF7BW125 to SF10BW125
558 558  
559 -905.3 - SF7BW125 to SF10BW125
488 +== 2.6  LED Indicator ==
560 560  
490 +The LDDS20 has an internal LED which is to show the status of different state.
561 561  
562 -(% style="color:blue" %)**Downlink:**
563 563  
564 -923.3 - SF7BW500 to SF12BW500
493 +* Blink once when device power on.
494 +* The device detects the sensor and flashes 5 times.
495 +* Solid ON for 5 seconds once device successful Join the network.
496 +* Blink once when device transmit a packet.
565 565  
566 -923.9 - SF7BW500 to SF12BW500
567 567  
568 -924.5 - SF7BW500 to SF12BW500
569 569  
570 -925.1 - SF7BW500 to SF12BW500
500 +== 2.7  ​Firmware Change Log ==
571 571  
572 -925.7 - SF7BW500 to SF12BW500
573 573  
574 -926.3 - SF7BW500 to SF12BW500
575 -
576 -926.9 - SF7BW500 to SF12BW500
577 -
578 -927.5 - SF7BW500 to SF12BW500
579 -
580 -923.3 - SF12BW500(RX2 downlink only)
581 -
582 -
583 -
584 -)))
585 -
586 -=== 2.6.3  CN470-510 (CN470) ===
587 -
588 588  (((
589 -Used in China, Default use CHE=1
504 +**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/]]
590 590  )))
591 591  
592 592  (((
593 -(% style="color:blue" %)**Uplink:**
594 -)))
595 -
596 -(((
597 -486.3 - SF7BW125 to SF12BW125
598 -)))
599 -
600 -(((
601 -486.5 - SF7BW125 to SF12BW125
602 -)))
603 -
604 -(((
605 -486.7 - SF7BW125 to SF12BW125
606 -)))
607 -
608 -(((
609 -486.9 - SF7BW125 to SF12BW125
610 -)))
611 -
612 -(((
613 -487.1 - SF7BW125 to SF12BW125
614 -)))
615 -
616 -(((
617 -487.3 - SF7BW125 to SF12BW125
618 -)))
619 -
620 -(((
621 -487.5 - SF7BW125 to SF12BW125
622 -)))
623 -
624 -(((
625 -487.7 - SF7BW125 to SF12BW125
626 -)))
627 -
628 -(((
629 629  
630 630  )))
631 631  
632 632  (((
633 -(% style="color:blue" %)**Downlink:**
512 +**Firmware Upgrade Method:  [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]**
634 634  )))
635 635  
636 -(((
637 -506.7 - SF7BW125 to SF12BW125
638 -)))
639 639  
640 -(((
641 -506.9 - SF7BW125 to SF12BW125
642 -)))
643 643  
644 -(((
645 -507.1 - SF7BW125 to SF12BW125
646 -)))
517 +== 2.8  Battery Analysis ==
647 647  
648 -(((
649 -507.3 - SF7BW125 to SF12BW125
650 -)))
651 651  
652 -(((
653 -507.5 - SF7BW125 to SF12BW125
654 -)))
655 655  
656 -(((
657 -507.7 - SF7BW125 to SF12BW125
658 -)))
659 659  
660 -(((
661 -507.9 - SF7BW125 to SF12BW125
662 -)))
522 +=== 2.8.1  Battery Type ===
663 663  
664 -(((
665 -508.1 - SF7BW125 to SF12BW125
666 -)))
524 +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.
667 667  
668 -(((
669 -505.3 - SF12BW125 (RX2 downlink only)
670 -)))
671 671  
527 +The battery related documents as below:
672 672  
673 -
674 -=== 2.6.4  AU915-928(AU915) ===
675 -
676 -(((
677 -Default use CHE=2
678 -
679 -(% style="color:blue" %)**Uplink:**
680 -
681 -916.8 - SF7BW125 to SF12BW125
682 -
683 -917.0 - SF7BW125 to SF12BW125
684 -
685 -917.2 - SF7BW125 to SF12BW125
686 -
687 -917.4 - SF7BW125 to SF12BW125
688 -
689 -917.6 - SF7BW125 to SF12BW125
690 -
691 -917.8 - SF7BW125 to SF12BW125
692 -
693 -918.0 - SF7BW125 to SF12BW125
694 -
695 -918.2 - SF7BW125 to SF12BW125
696 -
697 -
698 -(% style="color:blue" %)**Downlink:**
699 -
700 -923.3 - SF7BW500 to SF12BW500
701 -
702 -923.9 - SF7BW500 to SF12BW500
703 -
704 -924.5 - SF7BW500 to SF12BW500
705 -
706 -925.1 - SF7BW500 to SF12BW500
707 -
708 -925.7 - SF7BW500 to SF12BW500
709 -
710 -926.3 - SF7BW500 to SF12BW500
711 -
712 -926.9 - SF7BW500 to SF12BW500
713 -
714 -927.5 - SF7BW500 to SF12BW500
715 -
716 -923.3 - SF12BW500(RX2 downlink only)
717 -
718 -
719 -
529 +* (((
530 +[[Battery Dimension>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
720 720  )))
721 -
722 -=== 2.6.5  AS920-923 & AS923-925 (AS923) ===
723 -
724 -(((
725 -(% style="color:blue" %)**Default Uplink channel:**
532 +* (((
533 +[[Lithium-Thionyl Chloride Battery  datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
726 726  )))
727 -
728 -(((
729 -923.2 - SF7BW125 to SF10BW125
535 +* (((
536 +[[Lithium-ion Battery-Capacitor datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
730 730  )))
731 731  
732 -(((
733 -923.4 - SF7BW125 to SF10BW125
734 -)))
539 + [[image:image-20220615102527-16.png]]
735 735  
736 -(((
737 -
738 -)))
739 739  
740 -(((
741 -(% style="color:blue" %)**Additional Uplink Channel**:
742 -)))
743 743  
744 -(((
745 -(OTAA mode, channel added by JoinAccept message)
746 -)))
543 +== 2.8.2  Battery Note ==
747 747  
748 -(((
749 -
750 -)))
545 +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.
751 751  
752 -(((
753 -(% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
754 -)))
755 755  
756 -(((
757 -922.2 - SF7BW125 to SF10BW125
758 -)))
759 759  
760 -(((
761 -922.4 - SF7BW125 to SF10BW125
762 -)))
549 +=== 2.8.3  Replace the battery ===
763 763  
764 764  (((
765 -922.6 - SF7BW125 to SF10BW125
552 +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.
766 766  )))
767 767  
768 768  (((
769 -922.8 - SF7BW125 to SF10BW125
770 -)))
771 -
772 -(((
773 -923.0 - SF7BW125 to SF10BW125
774 -)))
775 -
776 -(((
777 -922.0 - SF7BW125 to SF10BW125
778 -)))
779 -
780 -(((
781 781  
782 782  )))
783 783  
784 784  (((
785 -(% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
560 +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)
786 786  )))
787 787  
788 -(((
789 -923.6 - SF7BW125 to SF10BW125
790 -)))
791 791  
792 -(((
793 -923.8 - SF7BW125 to SF10BW125
794 -)))
795 795  
796 -(((
797 -924.0 - SF7BW125 to SF10BW125
798 -)))
565 +== 2.8.4  Battery Life Analyze ==
799 799  
800 -(((
801 -924.2 - SF7BW125 to SF10BW125
802 -)))
567 +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:
803 803  
804 -(((
805 -924.4 - SF7BW125 to SF10BW125
806 -)))
569 +[[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]]
807 807  
808 -(((
809 -924.6 - SF7BW125 to SF10BW125
810 -)))
811 811  
812 -(((
813 -
814 -)))
815 815  
816 -(((
817 -(% style="color:blue" %)**Downlink:**
818 -)))
573 += 3.  Using the AT Commands =
819 819  
820 820  (((
821 -Uplink channels 1-8 (RX1)
822 -)))
823 -
824 824  (((
825 -923.2 - SF10BW125 (RX2)
826 -)))
827 -
828 -
829 -
830 -=== 2.6.6  KR920-923 (KR920) ===
831 -
832 -(((
833 -(% style="color:blue" %)**Default channel:**
834 -)))
835 -
836 -(((
837 -922.1 - SF7BW125 to SF12BW125
838 -)))
839 -
840 -(((
841 -922.3 - SF7BW125 to SF12BW125
842 -)))
843 -
844 -(((
845 -922.5 - SF7BW125 to SF12BW125
846 -)))
847 -
848 -(((
849 849  
850 850  )))
851 -
852 -(((
853 -(% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
854 854  )))
855 855  
856 -(((
857 -922.1 - SF7BW125 to SF12BW125
858 -)))
581 +== 3.1  Access AT Commands ==
859 859  
860 -(((
861 -922.3 - SF7BW125 to SF12BW125
862 -)))
583 +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.
863 863  
864 -(((
865 -922.5 - SF7BW125 to SF12BW125
866 -)))
867 867  
868 -(((
869 -922.7 - SF7BW125 to SF12BW125
870 -)))
586 +[[image:image-20220610172924-4.png||height="483" width="988"]]
871 871  
872 -(((
873 -922.9 - SF7BW125 to SF12BW125
874 -)))
875 875  
876 -(((
877 -923.1 - SF7BW125 to SF12BW125
878 -)))
589 +Or if you have below board, use below connection:
879 879  
880 -(((
881 -923.3 - SF7BW125 to SF12BW125
882 -)))
883 883  
884 -(((
885 -
886 -)))
592 +[[image:image-20220610172924-5.png]]
887 887  
888 -(((
889 -(% style="color:blue" %)**Downlink:**
890 -)))
891 891  
892 892  (((
893 -Uplink channels 1-7(RX1)
596 +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:
894 894  )))
895 895  
896 -(((
897 -921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
898 -)))
899 899  
600 + [[image:image-20220610172924-6.png||height="601" width="860"]]
900 900  
602 +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/]].
901 901  
902 -=== 2.6.7  IN865-867 (IN865) ===
903 903  
904 -(((
905 -(% style="color:blue" %)**Uplink:**
906 -)))
605 +AT+<CMD>?  :  Help on <CMD>
907 907  
908 -(((
909 -865.0625 - SF7BW125 to SF12BW125
910 -)))
607 +AT+<CMD>  :  Run <CMD>
911 911  
912 -(((
913 -865.4025 - SF7BW125 to SF12BW125
914 -)))
609 +AT+<CMD>=<value>  :  Set the value
915 915  
916 -(((
917 -865.9850 - SF7BW125 to SF12BW125
918 -)))
611 +AT+<CMD>=?  :  Get the value
919 919  
920 -(((
921 -
922 -)))
923 923  
924 -(((
925 -(% style="color:blue" %)**Downlink:**
926 -)))
614 +**General Commands** : 
927 927  
928 -(((
929 -Uplink channels 1-3 (RX1)
930 -)))
616 +AT                    : Attention       
931 931  
932 -(((
933 -866.550 - SF10BW125 (RX2)
934 -)))
618 +AT?                            : Short Help     
935 935  
620 +ATZ                            : MCU Reset    
936 936  
622 +AT+TDC           : Application Data Transmission Interval 
937 937  
938 -== 2.7  LED Indicator ==
939 939  
940 -The LDDS75 has an internal LED which is to show the status of different state.
625 +**Keys, IDs and EUIs management:**
941 941  
627 +AT+APPEUI              : Application EUI      
942 942  
943 -* Blink once when device power on.
944 -* The device detects the sensor and flashes 5 times.
945 -* Solid ON for 5 seconds once device successful Join the network.
946 -* Blink once when device transmit a packet.
629 +AT+APPKEY              : Application Key     
947 947  
948 -== 2.8  ​Firmware Change Log ==
631 +AT+APPSKEY            : Application Session Key
949 949  
633 +AT+DADDR              : Device Address     
950 950  
951 -(((
952 -**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/]]
953 -)))
635 +AT+DEUI                   : Device EUI     
954 954  
955 -(((
956 -
957 -)))
637 +AT+NWKID               : Network ID (You can enter this command change only after successful network connection) 
958 958  
959 -(((
960 -**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
961 -)))
639 +AT+NWKSKEY          : Network Session Key Joining and sending date on LoRa network  
962 962  
641 +AT+CFM          : Confirm Mode       
963 963  
643 +AT+CFS                     : Confirm Status       
964 964  
965 -== 2.9  Mechanical ==
645 +AT+JOIN          : Join LoRa? Network       
966 966  
647 +AT+NJM          : LoRa? Network Join Mode    
967 967  
968 -[[image:image-20220610172003-1.png]]
649 +AT+NJS                     : LoRa? Network Join Status    
969 969  
651 +AT+RECV                  : Print Last Received Data in Raw Format
970 970  
971 -[[image:image-20220610172003-2.png]]
653 +AT+RECVB                : Print Last Received Data in Binary Format      
972 972  
655 +AT+SEND                  : Send Text Data      
973 973  
657 +AT+SENB                  : Send Hexadecimal Data
974 974  
975 -== 2.10  Battery Analysis ==
976 976  
977 -=== 2.10.1  Battery Type ===
660 +**LoRa Network Management :**
978 978  
979 -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.
662 +AT+ADR          : Adaptive Rate
980 980  
664 +AT+CLASS                : LoRa Class(Currently only support class A
981 981  
982 -The battery related documents as below:
666 +AT+DCS           : Duty Cycle Setting 
983 983  
984 -* (((
985 -[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
986 -)))
987 -* (((
988 -[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
989 -)))
990 -* (((
991 -[[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]]
992 -)))
668 +AT+DR                      : Data Rate (Can Only be Modified after ADR=0)     
993 993  
994 - [[image:image-20220610172400-3.png]]
670 +AT+FCD           : Frame Counter Downlink       
995 995  
672 +AT+FCU           : Frame Counter Uplink   
996 996  
674 +AT+JN1DL                : Join Accept Delay1
997 997  
998 -=== 2.10.2  Replace the battery ===
676 +AT+JN2DL                : Join Accept Delay2
999 999  
1000 -(((
1001 -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.
1002 -)))
678 +AT+PNM                   : Public Network Mode   
1003 1003  
1004 -(((
1005 -
1006 -)))
680 +AT+RX1DL                : Receive Delay1      
1007 1007  
1008 -(((
1009 -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)
1010 -)))
682 +AT+RX2DL                : Receive Delay2      
1011 1011  
684 +AT+RX2DR               : Rx2 Window Data Rate 
1012 1012  
686 +AT+RX2FQ               : Rx2 Window Frequency
1013 1013  
1014 -= 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
688 +AT+TXP           : Transmit Power
1015 1015  
1016 -(((
1017 -(((
1018 -Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
1019 -)))
1020 -)))
1021 1021  
1022 -* (((
1023 -(((
1024 -AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
1025 -)))
1026 -)))
1027 -* (((
1028 -(((
1029 -LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1030 -)))
1031 -)))
691 +**Information :**
1032 1032  
1033 -(((
1034 -(((
1035 -
1036 -)))
693 +AT+RSSI           : RSSI of the Last Received Packet   
1037 1037  
1038 -(((
1039 -There are two kinds of commands to configure LDDS75, they are:
1040 -)))
1041 -)))
695 +AT+SNR           : SNR of the Last Received Packet   
1042 1042  
1043 -* (((
1044 -(((
1045 -(% style="color:#4f81bd" %)** General Commands**.
1046 -)))
1047 -)))
697 +AT+VER           : Image Version and Frequency Band       
1048 1048  
1049 -(((
1050 -(((
1051 -These commands are to configure:
1052 -)))
1053 -)))
699 +AT+FDR           : Factory Data Reset
1054 1054  
1055 -* (((
1056 -(((
1057 -General system settings like: uplink interval.
1058 -)))
1059 -)))
1060 -* (((
1061 -(((
1062 -LoRaWAN protocol & radio related command.
1063 -)))
1064 -)))
701 +AT+PORT                  : Application Port    
1065 1065  
1066 -(((
1067 -(((
1068 -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]]
1069 -)))
1070 -)))
703 +AT+CHS           : Get or Set Frequency (Unit: Hz) for Single Channel Mode
1071 1071  
1072 -(((
1073 -(((
1074 -
1075 -)))
1076 -)))
705 + AT+CHE                   : Get or Set eight channels mode, Only for US915, AU915, CN470
1077 1077  
1078 -* (((
1079 -(((
1080 -(% style="color:#4f81bd" %)** Commands special design for LDDS75**
1081 -)))
1082 -)))
1083 1083  
1084 -(((
1085 -(((
1086 -These commands only valid for LDDS75, as below:
1087 -)))
1088 -)))
1089 1089  
1090 -
1091 -
1092 -== 3.1  Access AT Commands ==
1093 -
1094 -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.
1095 -
1096 -[[image:image-20220610172924-4.png||height="483" width="988"]]
1097 -
1098 -
1099 -Or if you have below board, use below connection:
1100 -
1101 -
1102 -[[image:image-20220610172924-5.png]]
1103 -
1104 -
1105 -(((
1106 -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:
1107 -)))
1108 -
1109 -
1110 - [[image:image-20220610172924-6.png||height="601" width="860"]]
1111 -
1112 -
1113 -
1114 1114  == 3.2  Set Transmit Interval Time ==
1115 1115  
1116 1116  Feature: Change LoRaWAN End Node Transmit Interval.
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