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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 175.22
edited by Xiaoling
on 2022/06/15 11:09
Change comment: There is no comment for this version
To version 174.7
edited by Xiaoling
on 2022/06/15 10:34
Change comment: There is no comment for this version

Summary

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100 100  * IP66 Waterproof Enclosure
101 101  * 8500mAh Battery for long term use
102 102  
103 -
104 -
105 -
106 106  == 1.3  Suitable Container & Liquid ==
107 107  
108 108  * Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
... ... @@ -112,9 +112,6 @@
112 112  ** Pure non metal material: <10 mm
113 113  * Pure liquid without irregular deposition.
114 114  
115 -
116 -
117 -
118 118  == 1.4  Mechanical ==
119 119  
120 120  [[image:image-20220615090910-1.png]]
... ... @@ -204,9 +204,6 @@
204 204  * Smart liquid control solution.
205 205  * Smart liquefied gas solution.
206 206  
207 -
208 -
209 -
210 210  == 1.7  Precautions ==
211 211  
212 212  * 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.
... ... @@ -213,9 +213,6 @@
213 213  * 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.
214 214  * 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.
215 215  
216 -
217 -
218 -
219 219  == 1.8  Pin mapping and power on ==
220 220  
221 221  
... ... @@ -376,7 +376,6 @@
376 376  
377 377  
378 378  
379 -
380 380  === 2.3.3  Interrupt Pin ===
381 381  
382 382  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.
... ... @@ -420,7 +420,7 @@
420 420  While using TTN network, you can add the payload format to decode the payload.
421 421  
422 422  
423 -[[image:1655261164557-670.png]]
410 +[[image:1654850829385-439.png]]
424 424  
425 425  The payload decoder function for TTN V3 is here:
426 426  
... ... @@ -508,6 +508,8 @@
508 508  * Solid ON for 5 seconds once device successful Join the network.
509 509  * Blink once when device transmit a packet.
510 510  
498 +
499 +
511 511  == 2.7  ​Firmware Change Log ==
512 512  
513 513  
... ... @@ -581,144 +581,138 @@
581 581  
582 582  
583 583  
584 -= 3.  Using the AT Commands =
573 += 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
585 585  
586 586  (((
587 587  (((
588 -
577 +Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
589 589  )))
590 590  )))
591 591  
592 -== 3.1  Access AT Commands ==
581 +* (((
582 +(((
583 +AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
584 +)))
585 +)))
586 +* (((
587 +(((
588 +LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
589 +)))
590 +)))
593 593  
594 -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.
592 +(((
593 +(((
594 +
595 +)))
595 595  
597 +(((
598 +There are two kinds of commands to configure LDDS75, they are:
599 +)))
600 +)))
596 596  
597 -[[image:image-20220610172924-4.png||height="483" width="988"]]
602 +* (((
603 +(((
604 +(% style="color:#4f81bd" %)** General Commands**.
605 +)))
606 +)))
598 598  
608 +(((
609 +(((
610 +These commands are to configure:
611 +)))
612 +)))
599 599  
600 -Or if you have below board, use below connection:
614 +* (((
615 +(((
616 +General system settings like: uplink interval.
617 +)))
618 +)))
619 +* (((
620 +(((
621 +LoRaWAN protocol & radio related command.
622 +)))
623 +)))
601 601  
625 +(((
626 +(((
627 +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]]
628 +)))
629 +)))
602 602  
603 -[[image:image-20220610172924-5.png]]
631 +(((
632 +(((
633 +
634 +)))
635 +)))
604 604  
637 +* (((
638 +(((
639 +(% style="color:#4f81bd" %)** Commands special design for LDDS75**
640 +)))
641 +)))
605 605  
606 606  (((
607 -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:
644 +(((
645 +These commands only valid for LDDS75, as below:
608 608  )))
647 +)))
609 609  
610 610  
611 - [[image:image-20220610172924-6.png||height="601" width="860"]]
612 612  
613 -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/]].
651 +== 3.1  Access AT Commands ==
614 614  
653 +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.
615 615  
616 -AT+<CMD>?  :  Help on <CMD>
655 +[[image:image-20220610172924-4.png||height="483" width="988"]]
617 617  
618 -AT+<CMD>  :  Run <CMD>
619 619  
620 -AT+<CMD>=<value>  :  Set the value
658 +Or if you have below board, use below connection:
621 621  
622 -AT+<CMD>=?  :  Get the value
623 623  
661 +[[image:image-20220610172924-5.png]]
624 624  
625 -(% style="color:#037691" %)** General Commands :**     
626 626  
627 -AT  :  Attention       
664 +(((
665 +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:
666 +)))
628 628  
629 -AT?  :  Short Help     
630 630  
631 -ATZ :  MCU Reset    
669 + [[image:image-20220610172924-6.png||height="601" width="860"]]
632 632  
633 -AT+TDC :  Application Data Transmission Interval 
634 634  
635 635  
636 -(% style="color:#037691" %)** Keys, IDs and EUIs management :**
673 +== 3.2  Set Transmit Interval Time ==
637 637  
638 -AT+APPEUI  :  Application EUI      
675 +Feature: Change LoRaWAN End Node Transmit Interval.
639 639  
640 -AT+APPKEY  :  Application Key     
677 +(% style="color:#037691" %)**AT Command: AT+TDC**
641 641  
642 -AT+APPSKEY  :  Application Session Key
679 +[[image:image-20220610173409-7.png]]
643 643  
644 -AT+DADDR :  Device Address     
645 645  
646 -AT+DEUI :  Device EUI     
682 +(((
683 +(% style="color:#037691" %)**Downlink Command: 0x01**
684 +)))
647 647  
648 -AT+NWKID  :  Network ID (You can enter this command change only after successful network connection) 
686 +(((
687 +(((
688 +Format: Command Code (0x01) followed by 3 bytes time value.
649 649  
650 -AT+NWKSKEY  : Network Session Key Joining and sending date on LoRa network  
690 +(((
691 +If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
692 +)))
651 651  
652 -AT+CFM :  Confirm Mode       
694 +* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
695 +* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
696 +)))
697 +)))
653 653  
654 -AT+CFS :  Confirm Status       
655 655  
656 -AT+JOIN  :  Join LoRa? Network       
657 657  
658 -AT+NJM  :  LoRa? Network Join Mode    
659 659  
660 -AT+NJS  :  LoRa? Network Join Status    
661 661  
662 -AT+RECV  :  Print Last Received Data in Raw Format
703 +== 3.3  Set Interrupt Mode ==
663 663  
664 -AT+RECVB :  Print Last Received Data in Binary Format      
665 -
666 -AT+SEND  :  Send Text Data      
667 -
668 -AT+SENB  :  Send Hexadecimal Data
669 -
670 -
671 -(% style="color:#037691" %)** LoRa Network Management :**
672 -
673 -AT+ADR  :  Adaptive Rate
674 -
675 -AT+CLASS  :  LoRa Class(Currently only support class A
676 -
677 -AT+DCS  :  Duty Cycle Setting 
678 -
679 -AT+DR  :  Data Rate (Can Only be Modified after ADR=0)     
680 -
681 -AT+FCD  :  Frame Counter Downlink       
682 -
683 -AT+FCU  :  Frame Counter Uplink   
684 -
685 -AT+JN1DL  :  Join Accept Delay1
686 -
687 -AT+JN2DL  :  Join Accept Delay2
688 -
689 -AT+PNM  :  Public Network Mode   
690 -
691 -AT+RX1DL  :  Receive Delay1      
692 -
693 -AT+RX2DL  :  Receive Delay2      
694 -
695 -AT+RX2DR  :  Rx2 Window Data Rate 
696 -
697 -AT+RX2FQ  :  Rx2 Window Frequency
698 -
699 -AT+TXP  :  Transmit Power
700 -
701 -
702 -(% style="color:#037691" %)** Information :**
703 -
704 -AT+RSSI  :  RSSI of the Last Received Packet   
705 -
706 -AT+SNR  :  SNR of the Last Received Packet   
707 -
708 -AT+VER  :  Image Version and Frequency Band       
709 -
710 -AT+FDR  :  Factory Data Reset
711 -
712 -AT+PORT  :  Application Port    
713 -
714 -AT+CHS  :  Get or Set Frequency (Unit: Hz) for Single Channel Mode
715 -
716 - AT+CHE  :  Get or Set eight channels mode, Only for US915, AU915, CN470
717 -
718 -
719 -
720 -== 3.2  Set Interrupt Mode ==
721 -
722 722  Feature, Set Interrupt mode for GPIO_EXIT.
723 723  
724 724  (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
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737 737  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
738 738  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
739 739  
740 -
741 -
742 742  = 4.  FAQ =
743 743  
744 -== 4.1  What is the frequency plan for LDDS20? ==
725 +== 4.1  What is the frequency plan for LDDS75? ==
745 745  
746 -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"]]
727 +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"]]
747 747  
748 748  
749 749  
750 750  == 4.2  How to change the LoRa Frequency Bands/Region ==
751 751  
752 -You can follow the instructions for [[how to upgrade image>>||anchor="H2.7A0200BFirmwareChangeLog"]].
733 +You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
753 753  When downloading the images, choose the required image file for download. ​
754 754  
755 755  
756 756  
738 +== 4.3  Can I use LDDS75 in condensation environment? ==
739 +
740 +LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
741 +
742 +
743 +
757 757  = 5.  Trouble Shooting =
758 758  
759 759  == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
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773 773  = 6.  Order Info =
774 774  
775 775  
776 -Part Number **:** (% style="color:blue" %)**LDDS20-XX**
763 +Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
777 777  
778 778  
779 779  (% style="color:blue" %)**XX**(%%)**: **The default frequency band
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787 787  * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
788 788  * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
789 789  
777 +(% style="color:blue" %)**YY**(%%): Battery Option
790 790  
779 +* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
780 +* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
781 +
791 791  = 7. ​ Packing Info =
792 792  
793 793  
794 794  **Package Includes**:
795 795  
796 -* LDDS20 LoRaWAN Liquid Level Sensor x 1
787 +* LDDS75 LoRaWAN Distance Detection Sensor x 1
797 797  
798 -
799 -(% style="color:red" %)**Note:**
800 -
801 -(% 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.
802 -
803 -
804 804  **Dimension and weight**:
805 805  
806 806  * Device Size: cm
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808 808  * Package Size / pcs : cm
809 809  * Weight / pcs : g
810 810  
811 -
812 812  = 8.  ​Support =
813 813  
814 814  * 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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