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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 174.11
edited by Xiaoling
on 2022/06/15 10:44
Change comment: There is no comment for this version
To version 175.24
edited by Xiaoling
on 2022/06/15 11:09
Change comment: There is no comment for this version

Summary

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Content
... ... @@ -100,6 +100,9 @@
100 100  * IP66 Waterproof Enclosure
101 101  * 8500mAh Battery for long term use
102 102  
103 +
104 +
105 +
103 103  == 1.3  Suitable Container & Liquid ==
104 104  
105 105  * Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
... ... @@ -109,6 +109,9 @@
109 109  ** Pure non metal material: <10 mm
110 110  * Pure liquid without irregular deposition.
111 111  
115 +
116 +
117 +
112 112  == 1.4  Mechanical ==
113 113  
114 114  [[image:image-20220615090910-1.png]]
... ... @@ -198,6 +198,9 @@
198 198  * Smart liquid control solution.
199 199  * Smart liquefied gas solution.
200 200  
207 +
208 +
209 +
201 201  == 1.7  Precautions ==
202 202  
203 203  * 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.
... ... @@ -204,6 +204,9 @@
204 204  * 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.
205 205  * 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.
206 206  
216 +
217 +
218 +
207 207  == 1.8  Pin mapping and power on ==
208 208  
209 209  
... ... @@ -364,6 +364,7 @@
364 364  
365 365  
366 366  
379 +
367 367  === 2.3.3  Interrupt Pin ===
368 368  
369 369  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.
... ... @@ -407,7 +407,7 @@
407 407  While using TTN network, you can add the payload format to decode the payload.
408 408  
409 409  
410 -[[image:1654850829385-439.png]]
423 +[[image:1655261164557-670.png]]
411 411  
412 412  The payload decoder function for TTN V3 is here:
413 413  
... ... @@ -497,6 +497,7 @@
497 497  
498 498  
499 499  
513 +
500 500  == 2.7  ​Firmware Change Log ==
501 501  
502 502  
... ... @@ -517,8 +517,6 @@
517 517  == 2.8  Battery Analysis ==
518 518  
519 519  
520 -
521 -
522 522  === 2.8.1  Battery Type ===
523 523  
524 524  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.
... ... @@ -611,133 +611,103 @@
611 611  AT+<CMD>=?  :  Get the value
612 612  
613 613  
614 -**General Commands :** 
626 +(% style="color:#037691" %)** General Commands :**     
615 615  
616 -AT                    : Attention       
628 +AT  :  Attention       
617 617  
618 -AT?                            : Short Help     
630 +AT?  :  Short Help     
619 619  
620 -ATZ                            : MCU Reset    
632 +ATZ :  MCU Reset    
621 621  
622 -AT+TDC           : Application Data Transmission Interval 
634 +AT+TDC :  Application Data Transmission Interval 
623 623  
624 624  
625 -**Keys, IDs and EUIs management :**
637 +(% style="color:#037691" %)** Keys, IDs and EUIs management :**
626 626  
627 -AT+APPEUI              : Application EUI      
639 +AT+APPEUI  :  Application EUI      
628 628  
629 -AT+APPKEY              : Application Key     
641 +AT+APPKEY  :  Application Key     
630 630  
631 -AT+APPSKEY            : Application Session Key
643 +AT+APPSKEY  :  Application Session Key
632 632  
633 -AT+DADDR              : Device Address     
645 +AT+DADDR :  Device Address     
634 634  
635 -AT+DEUI                   : Device EUI     
647 +AT+DEUI :  Device EUI     
636 636  
637 -AT+NWKID               : Network ID (You can enter this command change only after successful network connection) 
649 +AT+NWKID  :  Network ID (You can enter this command change only after successful network connection) 
638 638  
639 -AT+NWKSKEY          : Network Session Key Joining and sending date on LoRa network  
651 +AT+NWKSKEY  : Network Session Key Joining and sending date on LoRa network  
640 640  
641 -AT+CFM          : Confirm Mode       
653 +AT+CFM :  Confirm Mode       
642 642  
643 -AT+CFS                     : Confirm Status       
655 +AT+CFS :  Confirm Status       
644 644  
645 -AT+JOIN          : Join LoRa? Network       
657 +AT+JOIN  :  Join LoRa? Network       
646 646  
647 -AT+NJM          : LoRa? Network Join Mode    
659 +AT+NJM  :  LoRa? Network Join Mode    
648 648  
649 -AT+NJS                     : LoRa? Network Join Status    
661 +AT+NJS  :  LoRa? Network Join Status    
650 650  
651 -AT+RECV                  : Print Last Received Data in Raw Format
663 +AT+RECV  :  Print Last Received Data in Raw Format
652 652  
653 -AT+RECVB                : Print Last Received Data in Binary Format      
665 +AT+RECVB :  Print Last Received Data in Binary Format      
654 654  
655 -AT+SEND                  : Send Text Data      
667 +AT+SEND  :  Send Text Data      
656 656  
657 -AT+SENB                  : Send Hexadecimal Data
669 +AT+SENB  :  Send Hexadecimal Data
658 658  
659 659  
660 -**LoRa Network Management :**
672 +(% style="color:#037691" %)** LoRa Network Management :**
661 661  
662 -AT+ADR          : Adaptive Rate
674 +AT+ADR  :  Adaptive Rate
663 663  
664 -AT+CLASS                : LoRa Class(Currently only support class A
676 +AT+CLASS  :  LoRa Class(Currently only support class A
665 665  
666 -AT+DCS           : Duty Cycle Setting 
678 +AT+DCS  :  Duty Cycle Setting 
667 667  
668 -AT+DR                      : Data Rate (Can Only be Modified after ADR=0)     
680 +AT+DR  :  Data Rate (Can Only be Modified after ADR=0)     
669 669  
670 -AT+FCD           : Frame Counter Downlink       
682 +AT+FCD  :  Frame Counter Downlink       
671 671  
672 -AT+FCU           : Frame Counter Uplink   
684 +AT+FCU  :  Frame Counter Uplink   
673 673  
674 -AT+JN1DL                : Join Accept Delay1
686 +AT+JN1DL  :  Join Accept Delay1
675 675  
676 -AT+JN2DL                : Join Accept Delay2
688 +AT+JN2DL  :  Join Accept Delay2
677 677  
678 -AT+PNM                   : Public Network Mode   
690 +AT+PNM  :  Public Network Mode   
679 679  
680 -AT+RX1DL                : Receive Delay1      
692 +AT+RX1DL  :  Receive Delay1      
681 681  
682 -AT+RX2DL                : Receive Delay2      
694 +AT+RX2DL  :  Receive Delay2      
683 683  
684 -AT+RX2DR               : Rx2 Window Data Rate 
696 +AT+RX2DR  :  Rx2 Window Data Rate 
685 685  
686 -AT+RX2FQ               : Rx2 Window Frequency
698 +AT+RX2FQ  :  Rx2 Window Frequency
687 687  
688 -AT+TXP           : Transmit Power
700 +AT+TXP  :  Transmit Power
689 689  
690 690  
691 -**Information :**
703 +(% style="color:#037691" %)** Information :**
692 692  
693 -AT+RSSI           : RSSI of the Last Received Packet   
705 +AT+RSSI  :  RSSI of the Last Received Packet   
694 694  
695 -AT+SNR           : SNR of the Last Received Packet   
707 +AT+SNR  :  SNR of the Last Received Packet   
696 696  
697 -AT+VER           : Image Version and Frequency Band       
709 +AT+VER  :  Image Version and Frequency Band       
698 698  
699 -AT+FDR           : Factory Data Reset
711 +AT+FDR  :  Factory Data Reset
700 700  
701 -AT+PORT                  : Application Port    
713 +AT+PORT  :  Application Port    
702 702  
703 -AT+CHS           : Get or Set Frequency (Unit: Hz) for Single Channel Mode
715 +AT+CHS  :  Get or Set Frequency (Unit: Hz) for Single Channel Mode
704 704  
705 - AT+CHE                   : Get or Set eight channels mode, Only for US915, AU915, CN470
717 + AT+CHE  :  Get or Set eight channels mode, Only for US915, AU915, CN470
706 706  
707 707  
708 708  
709 -== 3.2  Set Transmit Interval Time ==
721 +== 3.2  Set Interrupt Mode ==
710 710  
711 -Feature: Change LoRaWAN End Node Transmit Interval.
712 -
713 -(% style="color:#037691" %)**AT Command: AT+TDC**
714 -
715 -[[image:image-20220610173409-7.png]]
716 -
717 -
718 -(((
719 -(% style="color:#037691" %)**Downlink Command: 0x01**
720 -)))
721 -
722 -(((
723 -(((
724 -Format: Command Code (0x01) followed by 3 bytes time value.
725 -
726 -(((
727 -If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
728 -)))
729 -
730 -* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
731 -* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
732 -)))
733 -)))
734 -
735 -
736 -
737 -
738 -
739 -== 3.3  Set Interrupt Mode ==
740 -
741 741  Feature, Set Interrupt mode for GPIO_EXIT.
742 742  
743 743  (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
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756 756  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
757 757  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
758 758  
741 +
742 +
759 759  = 4.  FAQ =
760 760  
761 -== 4.1  What is the frequency plan for LDDS75? ==
745 +== 4.1  What is the frequency plan for LDDS20? ==
762 762  
763 -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"]]
747 +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"]]
764 764  
765 765  
766 766  
767 767  == 4.2  How to change the LoRa Frequency Bands/Region ==
768 768  
769 -You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
753 +You can follow the instructions for [[how to upgrade image>>||anchor="H2.7A0200BFirmwareChangeLog"]].
770 770  When downloading the images, choose the required image file for download. ​
771 771  
772 772  
773 773  
774 -== 4.3  Can I use LDDS75 in condensation environment? ==
775 -
776 -LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
777 -
778 -
779 -
780 780  = 5.  Trouble Shooting =
781 781  
782 782  == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
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796 796  = 6.  Order Info =
797 797  
798 798  
799 -Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
777 +Part Number **:** (% style="color:blue" %)**LDDS20-XX**
800 800  
801 801  
802 802  (% style="color:blue" %)**XX**(%%)**: **The default frequency band
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810 810  * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
811 811  * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
812 812  
813 -(% style="color:blue" %)**YY**(%%): Battery Option
814 814  
815 -* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
816 -* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
817 -
818 818  = 7. ​ Packing Info =
819 819  
820 820  
821 821  **Package Includes**:
822 822  
823 -* LDDS75 LoRaWAN Distance Detection Sensor x 1
797 +* LDDS20 LoRaWAN Liquid Level Sensor x 1
824 824  
799 +
800 +(% style="color:red" %)**Note:**
801 +
802 +(% style="color:red" %)**Ultrasonic coupling paste**(%%) and(% style="color:red" %)** Eproxy AB glue**(%%) are subjected in most shipping way. So the default package doesn’t include it and user needs to purchase locally.
803 +
804 +
825 825  **Dimension and weight**:
826 826  
827 827  * Device Size: cm
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829 829  * Package Size / pcs : cm
830 830  * Weight / pcs : g
831 831  
812 +
832 832  = 8.  ​Support =
833 833  
834 834  * 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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