Last modified by Mengting Qiu on 2024/04/30 14:27
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From version < 51.1 >
edited by Edwin Chen
on 2022/05/23 00:18
To version < 55.3 >
edited by Xiaoling
on 2022/05/23 11:29
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1 -XWiki.Edwin
1 +XWiki.Xiaoling
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1 +(% style="text-align:center" %)
2 +[[image:image-20220523111447-1.jpeg||height="448" width="448"]]
3 +
1 1  {{box cssClass="floatinginfobox" title="**Contents**"}}
2 2  {{toc/}}
3 3  {{/box}}
4 4  
5 -= Overview =
8 +{{toc/}}
6 6  
7 -[[image:LHT65N_10.png||alt="LHT65_Image" height="265" width="265"]]
10 += 1.Introduction =
8 8  
12 +== 1.1 What is LHT65N Temperature & Humidity Sensor ==
9 9  
14 +
10 10  The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a(% class="mark" %) **built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% class="mark" %)**Temperature Sensor**(%%)**.**
11 11  
12 12  The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
... ... @@ -19,9 +19,8 @@
19 19  
20 20  *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
21 21  
27 +== 1.2 Features ==
22 22  
23 -== Features: ==
24 -
25 25  * Wall mountable
26 26  * LoRaWAN v1.0.3 Class A protocol
27 27  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
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34 34  * Tri-color LED to indicate working status
35 35  * Datalog feature
36 36  
37 -== Specification: ==
41 +== 1.3 Specification ==
38 38  
39 39  **Built-in Temperature Sensor:**
40 40  
... ... @@ -57,9 +57,9 @@
57 57  * ±2°C accuracy from -55°C to +125°C
58 58  * Operating Range: -55 °C ~~ 125 °C
59 59  
60 -= Connect LHT65N to IoT Server =
64 += 2. Connect LHT65N to IoT Server =
61 61  
62 -== How does LHT65N work? ==
66 +== 2.1 How does LHT65N work? ==
63 63  
64 64  LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
65 65  
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66 66  If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
67 67  
68 68  
69 -== How to Activate LHT65N? ==
73 +== 2.2 How to Activate LHT65N? ==
70 70  
71 71  The LHT65N has two working modes:
72 72  
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77 77  
78 78  [[image:image-20220515123819-1.png||height="379" width="317"]]
79 79  
84 +(% border="1" %)
80 80  |**Behavior on ACT**|**Function**|**Action**
81 81  |**Pressing ACT between 1s < time < 3s**|Test uplink status|If LHT65N is already Joined to the LoRaWAN network, LHT65N will send an uplink packet, if LHT65N has an external sensor connected, blue led will blink once. If LHT65N has no external sensor, red led will blink once.
82 82  |**Pressing ACT for more than 3s**|Active Device|green led will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network. green led will solid turn on for 5 seconds after join in network.
83 83  |**Fast press ACT 5 times**|Deactivate Device|red led will solid on for 5 seconds. This means LHT65N is in Deep Sleep Mode.
84 84  
85 -== Example to join LoRaWAN network ==
90 +== 2.3 Example to join LoRaWAN network ==
86 86  
87 87  (% class="wikigeneratedid" %)
88 88  This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure.
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93 93  Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
94 94  
95 95  
96 -=== **Step 1**: Create Device n TTN ===
101 +=== 2.3.1 Step 1: Create Device n TTN ===
97 97  
98 98  Create a device in TTN V3 with the OTAA keys from LHT65N.
99 99  
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123 123  [[image:image-20220522233118-7.png]]
124 124  
125 125  
126 -=== Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
131 +=== 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
127 127  
128 128  Use ACT button to activate LHT65N and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
129 129  
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130 130  [[image:image-20220522233300-8.png]]
131 131  
132 132  
133 -== Uplink Payload: ==
138 +== 2.4 Uplink Payload ==
134 134  
135 135  The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and(% class="mark" %) every 20 minutes(%%) send one uplink by default.
136 136  
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137 137  After each uplink, the (% class="mark" %)BLUE LED(%%) will blink once.
138 138  
139 139  
140 -(% style="width:572px" %)
145 +(% border="1" style="width:572px" %)
141 141  |(% style="width:106px" %)**Size(bytes)**|(% style="width:71px" %)**2**|(% style="width:128px" %)**2**|(% style="width:103px" %)**2**|(% style="width:72px" %)**1**|(% style="width:89px" %)**4**
142 142  |(% style="width:106px" %)**Value**|(% style="width:71px" %)[[BAT>>path:#Battery]]|(% style="width:128px" %)(((
143 143  [[Built-In>>path:#SHT20_Temperature]]
... ... @@ -260,7 +260,7 @@
260 260  [[Time Stamp>>path:#Unix_Time_Stamp]]
261 261  )))
262 262  
263 -* **Battery status & **[[(% class="wikiinternallink wikiinternallink" %)**Built-in Humidity**>>path:#SHT20_Humidity]]
268 +* **Battery status & **[[(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)**Built-in Humidity**>>path:#SHT20_Humidity]]
264 264  
265 265  (% style="width:587px" %)
266 266  |Bit(bit)|(% style="width:280px" %)[15:14]|(% style="width:136px" %)[11:0]
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370 370  |(% style="width:69px" %)1byte|(% style="width:129px" %)4bytes|(% style="width:134px" %)4bytes|(% style="width:119px" %)1byte
371 371  |(% style="width:69px" %)31|(% style="width:129px" %)Timestamp start|(% style="width:134px" %)Timestamp end|(% style="width:119px" %)Uplink Interval
372 372  
373 -
374 374  Timestamp start and Timestamp end use Unix TimeStamp format as mentioned above. Devices will reply with all data log during this time period, use the uplink interval.
375 375  
376 376  
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403 403  
404 404  )))
405 405  
406 -
407 407  Poll message flag & Ext
408 408  
409 409  
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414 414  0b(1001)
415 415  )))
416 416  
417 -
418 418  Poll Message Flag: 1: This message is a poll message reply.
419 419  
420 420  * Poll Message Flag is set to 1.
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519 519  
520 520  == Installation ==
521 521  
522 -[[image:image-20220516231650-1.png||height="632" width="620"]]
524 +[[image:image-20220516231650-1.png||height="436" width="428"]]
523 523  
524 524  
525 525  
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539 539  * Operating Range: -40 ~~ 125 °C
540 540  * -55°C to 125°C
541 541  * Working voltage 2.35v ~~ 5v
542 -
543 543  
545 += Configure LHT65N via AT Command or LoRaWAN Downlink =
546 +
547 +Use can configure LHT65N via AT Command or LoRaWAN Downlink.
548 +
549 +* AT Command Connection: See [[FAQ>>path:#AT_COMMAND]].
550 +* LoRaWAN Downlink instruction for different platforms:
551 +
552 +[[http:~~/~~/wiki.dragino.com/index.php?title=Main_Page#Use_Note_for_Server>>url:http://wiki.dragino.com/index.php?title=Main_Page#Use_Note_for_Server]]
553 +
554 +
555 +There are two kinds of commands to configure LHT65N, they are:
556 +
557 +* **General Commands**.
558 +
559 +These commands are to configure:
560 +
561 +* General system settings like: uplink interval.
562 +* LoRaWAN protocol & radio-related commands.
563 +
564 +They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~*~*). These commands can be found on the wiki:
565 +
566 +[[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_Downlink_Command>>url:http://wiki.dragino.com/index.php?title=End_Device_Downlink_Command]]
567 +
568 +
569 +
570 +* **Commands special design for LHT65N**
571 +
572 +These commands are only valid for LHT65N, as below:
573 +
574 +
575 +== Set Transmit Interval Time ==
576 +
577 +Feature: Change LoRaWAN End Node Transmit Interval.
578 +
579 +**AT Command: AT+TDC**
580 +
581 +|**Command Example**|**Function**|**Response**
582 +|AT+TDC?|Show current transmit Interval|(((
583 +30000
584 +
585 +OK
586 +
587 +the interval is 30000ms = 30s
588 +)))
589 +|AT+TDC=60000|Set Transmit Interval|(((
590 +OK
591 +
592 +Set transmit interval to 60000ms = 60 seconds
593 +)))
594 +
595 +**Downlink Command: 0x01**
596 +
597 +Format: Command Code (0x01) followed by 3 bytes time value.
598 +
599 +If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
600 +
601 +* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
602 +* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
603 +
604 +== Set External Sensor Mode ==
605 +
606 +Feature: Change External Sensor Mode.
607 +
608 +**AT Command: AT+EXT**
609 +
610 +|**Command Example**|**Function**|**Response**
611 +|AT+EXT?|Get current external sensor mode|(((
612 +1
613 +
614 +OK
615 +
616 +External Sensor mode =1
617 +)))
618 +|AT+EXT=1|(% colspan="2" %)Set external sensor mode to 1
619 +|AT+EXT=9|(% colspan="2" %)Set to external DS18B20 with timestamp
620 +
621 +**Downlink Command: 0xA2**
622 +
623 +Total bytes: 2 ~~ 5 bytes
624 +
625 +Example:
626 +
627 +* 0xA201: Set external sensor type to E1
628 +* 0xA209: Same as AT+EXT=9
629 +* 0xA20702003c,Same as AT+SETCNT=60
630 +
631 +== Enable/Disable uplink Temperature probe ID ==
632 +
633 +Feature: If PID is enabled, device will send the temperature probe ID on:
634 +
635 +* First Packet after OTAA Join
636 +* Every 24 hours since the first packet.
637 +
638 +PID is default set to disable (0)
639 +
640 +
641 +**AT Command:**
642 +
643 +|**Command Example**|**Function**|**Response**
644 +|AT+PID=1|Enable PID uplink|OK
645 +
646 +**Downlink Command:**
647 +
648 +* 0xA800     à AT+PID=0
649 +* 0xA801     à AT+PID=1
650 +
651 +== Set Password ==
652 +
653 +Feature: Set device password, max 9 digits
654 +
655 +**AT Command: AT+PWORD**
656 +
657 +|**Command Example**|**Function**|**Response**
658 +|AT+PWORD=?|Show password|(((
659 +123456
660 +
661 +
662 +OK
663 +)))
664 +|AT+PWORD=999999|Set password|OK
665 +
666 +**Downlink Command:**
667 +
668 +No downlink command for this feature.
669 +
670 +
671 +== Quit AT Command ==
672 +
673 +Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
674 +
675 +**AT Command: AT+DISAT**
676 +
677 +|**Command Example**|**Function**|**Response**
678 +|AT+DISAT|Quit AT Commands mode|OK
679 +
680 +**Downlink Command:**
681 +
682 +No downlink command for this feature.
683 +
684 +
685 +== Set to sleep mode ==
686 +
687 +Feature: Set device to sleep mode
688 +
689 +**AT Command: AT+SLEEP**
690 +
691 +| | |
692 +|**Command Example**|**Function**|**Response**
693 +|AT+SLEEP|Set to sleep mode|(((
694 +Clear all stored sensor data…
695 +
696 +OK
697 +)))
698 +
699 +**Downlink Command:**
700 +
701 +* There is no downlink command to set to Sleep mode.
702 +
703 +== Set system time ==
704 +
705 +Feature: Set system time, unix format. [[See here for format detail.>>path:#TimeStamp]]
706 +
707 +**AT Command:**
708 +
709 +|**Command Example**|**Function**
710 +|AT+TIMESTAMP=1611104352|(((
711 +OK
712 +
713 +Set System time to 2021-01-20 00:59:12
714 +)))
715 +
716 +**Downlink Command:**
717 +
718 +0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
719 +
720 +
721 +== Set Time Sync Mode ==
722 +
723 +Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
724 +
725 +
726 +SYNCMOD is set to 1 by default. If user want to set a different time from LoRaWAN server, user need to set this to 0.
727 +
728 +
729 +**AT Command:**
730 +
731 +|**Command Example**|**Function**
732 +|AT+SYNCMOD=1|Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
733 +
734 +**Downlink Command:**
735 +
736 +0x28 01 ~/~/ Same As AT+SYNCMOD=1
737 +
738 +0x28 00 ~/~/ Same As AT+SYNCMOD=0
739 +
740 +
741 +== Set Time Sync Interval ==
742 +
743 +Feature: Define System time sync interval. SYNCTDC default value: 10 days.
744 +
745 +**AT Command:**
746 +
747 +|**Command Example**|**Function**
748 +|AT+SYNCTDC=0x0A|Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
749 +
750 +**Downlink Command:**
751 +
752 +0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
753 +
754 +
755 +== Print data entries base on page. ==
756 +
757 +Feature: Print the sector data from start page to stop page (max is 416 pages).
758 +
759 +**AT Command: AT+PDTA**
760 +
761 +|**Command Example**|**Response**
762 +|(((
763 +AT+PDTA=1,3
764 +
765 +
766 +
767 +Print page 1 to 3
768 +)))|(((
769 +8019500 19/6/26 16:48 1 2992 sht_temp=28.21 sht_hum=71.5 ds_temp=27.31
770 +
771 +8019510 19/6/26 16:53 1 2994 sht_temp=27.64 sht_hum=69.3 ds_temp=26.93
772 +
773 +8019520 19/6/26 16:58 1 2996 sht_temp=28.39 sht_hum=72.0 ds_temp=27.06
774 +
775 +8019530 19/6/26 17:03 1 2996 sht_temp=27.97 sht_hum=70.4 ds_temp=27.12
776 +
777 +8019540 19/6/26 17:08 1 2996 sht_temp=27.80 sht_hum=72.9 ds_temp=27.06
778 +
779 +8019550 19/6/26 17:13 1 2998 sht_temp=27.30 sht_hum=72.4 ds_temp=26.68
780 +
781 +8019560 19/6/26 17:22 1 2992 sht_temp=26.27 sht_hum=62.3 ds_temp=26.56
782 +
783 +8019570
784 +
785 +8019580
786 +
787 +8019590
788 +
789 +80195A0
790 +
791 +80195B0
792 +
793 +80195C0
794 +
795 +80195D0
796 +
797 +80195E0
798 +
799 +80195F0
800 +
801 +
802 +OK
803 +)))
804 +
805 +**Downlink Command:**
806 +
807 +No downlink commands for feature
808 +
809 +
810 +
811 +== Print last few data entries. ==
812 +
813 +Feature: Print the last few data entries
814 +
815 +**AT Command: AT+PLDTA**
816 +
817 +|**Command Example**|**Response**
818 +|(((
819 +AT+PLDTA=5
820 +
821 +
822 +
823 +Print last 5 entries
824 +)))|(((
825 +Stop Tx and RTP events when read sensor data
826 +
827 +1 19/6/26 13:59 1 3005 sht_temp=27.09 sht_hum=79.5 ds_temp=26.75
828 +
829 +2 19/6/26 14:04 1 3007 sht_temp=26.65 sht_hum=74.8 ds_temp=26.43
830 +
831 +3 19/6/26 14:09 1 3007 sht_temp=26.91 sht_hum=77.9 ds_temp=26.56
832 +
833 +4 19/6/26 14:15 1 3007 sht_temp=26.93 sht_hum=76.7 ds_temp=26.75
834 +
835 +5 19/6/26 14:20 1 3007 sht_temp=26.78 sht_hum=76.6 ds_temp=26.43
836 +
837 +Start Tx and RTP events
838 +
839 +OK
840 +)))
841 +
842 +**Downlink Command:**
843 +
844 +No downlink commands for feature
845 +
846 +
847 +
848 +== Clear Flash Record ==
849 +
850 +Feature: Clear flash storage for data log feature.
851 +
852 +**AT Command: AT+CLRDTA**
853 +
854 +|**Command Example**|**Function**|**Response**
855 +|AT+CLRDTA|Clear date record|(((
856 +Clear all stored sensor data…
857 +
858 +OK
859 +)))
860 +
861 +**Downlink Command: 0xA3**
862 +
863 +* Example: 0xA301 ~/~/Same as AT+CLRDTA
864 +
865 +
544 544  = Battery & How to replace =
545 545  
546 546  == Battery Type ==
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