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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 175.6
edited by Xiaoling
on 2022/06/15 10:53
Change comment: There is no comment for this version
To version 175.21
edited by Xiaoling
on 2022/06/15 11:08
Change comment: There is no comment for this version

Summary

Details

Page properties
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  
... ... @@ -362,7 +362,6 @@
362 362  * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
363 363  * If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
364 364  
365 -
366 366  === 2.3.3  Interrupt Pin ===
367 367  
368 368  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.
... ... @@ -494,7 +494,6 @@
494 494  * Solid ON for 5 seconds once device successful Join the network.
495 495  * Blink once when device transmit a packet.
496 496  
497 -
498 498  == 2.7  ​Firmware Change Log ==
499 499  
500 500  
... ... @@ -688,54 +688,24 @@
688 688  
689 689  (% style="color:#037691" %)** Information :**
690 690  
691 -AT+RSSI           : RSSI of the Last Received Packet   
701 +AT+RSSI  :  RSSI of the Last Received Packet   
692 692  
693 -AT+SNR           : SNR of the Last Received Packet   
703 +AT+SNR  :  SNR of the Last Received Packet   
694 694  
695 -AT+VER           : Image Version and Frequency Band       
705 +AT+VER  :  Image Version and Frequency Band       
696 696  
697 -AT+FDR           : Factory Data Reset
707 +AT+FDR  :  Factory Data Reset
698 698  
699 -AT+PORT                  : Application Port    
709 +AT+PORT  :  Application Port    
700 700  
701 -AT+CHS           : Get or Set Frequency (Unit: Hz) for Single Channel Mode
711 +AT+CHS  :  Get or Set Frequency (Unit: Hz) for Single Channel Mode
702 702  
703 - AT+CHE                   : Get or Set eight channels mode, Only for US915, AU915, CN470
713 + AT+CHE  :  Get or Set eight channels mode, Only for US915, AU915, CN470
704 704  
705 705  
706 706  
707 -== 3.2  Set Transmit Interval Time ==
717 +== 3.2  Set Interrupt Mode ==
708 708  
709 -Feature: Change LoRaWAN End Node Transmit Interval.
710 -
711 -(% style="color:#037691" %)**AT Command: AT+TDC**
712 -
713 -[[image:image-20220610173409-7.png]]
714 -
715 -
716 -(((
717 -(% style="color:#037691" %)**Downlink Command: 0x01**
718 -)))
719 -
720 -(((
721 -(((
722 -Format: Command Code (0x01) followed by 3 bytes time value.
723 -
724 -(((
725 -If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
726 -)))
727 -
728 -* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
729 -* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
730 -)))
731 -)))
732 -
733 -
734 -
735 -
736 -
737 -== 3.3  Set Interrupt Mode ==
738 -
739 739  Feature, Set Interrupt mode for GPIO_EXIT.
740 740  
741 741  (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
... ... @@ -754,27 +754,23 @@
754 754  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
755 755  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
756 756  
737 +
738 +
757 757  = 4.  FAQ =
758 758  
759 -== 4.1  What is the frequency plan for LDDS75? ==
741 +== 4.1  What is the frequency plan for LDDS20? ==
760 760  
761 -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"]]
743 +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"]]
762 762  
763 763  
764 764  
765 765  == 4.2  How to change the LoRa Frequency Bands/Region ==
766 766  
767 -You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
749 +You can follow the instructions for [[how to upgrade image>>||anchor="H2.7A0200BFirmwareChangeLog"]].
768 768  When downloading the images, choose the required image file for download. ​
769 769  
770 770  
771 771  
772 -== 4.3  Can I use LDDS75 in condensation environment? ==
773 -
774 -LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
775 -
776 -
777 -
778 778  = 5.  Trouble Shooting =
779 779  
780 780  == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
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794 794  = 6.  Order Info =
795 795  
796 796  
797 -Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
773 +Part Number **:** (% style="color:blue" %)**LDDS20-XX**
798 798  
799 799  
800 800  (% style="color:blue" %)**XX**(%%)**: **The default frequency band
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808 808  * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
809 809  * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
810 810  
811 -(% style="color:blue" %)**YY**(%%): Battery Option
812 812  
813 -* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
814 -* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
815 -
816 816  = 7. ​ Packing Info =
817 817  
818 818  
819 819  **Package Includes**:
820 820  
821 -* LDDS75 LoRaWAN Distance Detection Sensor x 1
793 +* LDDS20 LoRaWAN Liquid Level Sensor x 1
822 822  
795 +
796 +(% style="color:red" %)**Note:**
797 +
798 +(% 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.
799 +
800 +
823 823  **Dimension and weight**:
824 824  
825 825  * Device Size: cm
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827 827  * Package Size / pcs : cm
828 828  * Weight / pcs : g
829 829  
808 +
830 830  = 8.  ​Support =
831 831  
832 832  * 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.