Last modified by Mengting Qiu on 2024/04/30 14:27
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From version < 55.2 >
edited by Xiaoling
on 2022/05/23 11:28
To version < 52.1 >
edited by Edwin Chen
on 2022/05/23 00:35
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1 -XWiki.Xiaoling
1 +XWiki.Edwin
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1 -(% style="text-align:center" %)
2 -[[image:image-20220523111447-1.jpeg||height="448" width="448"]]
3 -
4 4  {{box cssClass="floatinginfobox" title="**Contents**"}}
5 5  {{toc/}}
6 6  {{/box}}
7 7  
8 -{{toc/}}
5 += Overview =
9 9  
10 -= 1.Introduction =
7 +[[image:LHT65N_10.png||alt="LHT65_Image" height="265" width="265"]]
11 11  
12 -== 1.1 What is LHT65N Temperature & Humidity Sensor ==
13 13  
14 -
15 15  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**(%%)**.**
16 16  
17 17  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.
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24 24  
25 25  *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
26 26  
27 -== 1.2 Features ==
28 28  
23 +== Features: ==
24 +
29 29  * Wall mountable
30 30  * LoRaWAN v1.0.3 Class A protocol
31 31  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
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38 38  * Tri-color LED to indicate working status
39 39  * Datalog feature
40 40  
41 -== 1.3 Specification ==
37 +== Specification: ==
42 42  
43 43  **Built-in Temperature Sensor:**
44 44  
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61 61  * ±2°C accuracy from -55°C to +125°C
62 62  * Operating Range: -55 °C ~~ 125 °C
63 63  
64 -= 2. Connect LHT65N to IoT Server =
60 += Connect LHT65N to IoT Server =
65 65  
66 -== 2.1 How does LHT65N work? ==
62 +== How does LHT65N work? ==
67 67  
68 68  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.
69 69  
... ... @@ -70,7 +70,7 @@
70 70  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.
71 71  
72 72  
73 -== 2.2 How to Activate LHT65N? ==
69 +== How to Activate LHT65N? ==
74 74  
75 75  The LHT65N has two working modes:
76 76  
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81 81  
82 82  [[image:image-20220515123819-1.png||height="379" width="317"]]
83 83  
84 -(% border="1" %)
85 85  |**Behavior on ACT**|**Function**|**Action**
86 86  |**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.
87 87  |**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.
88 88  |**Fast press ACT 5 times**|Deactivate Device|red led will solid on for 5 seconds. This means LHT65N is in Deep Sleep Mode.
89 89  
90 -== 2.3 Example to join LoRaWAN network ==
85 +== Example to join LoRaWAN network ==
91 91  
92 92  (% class="wikigeneratedid" %)
93 93  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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98 98  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:
99 99  
100 100  
101 -=== **2.3.1 Step 1**: Create Device n TTN ===
96 +=== **Step 1**: Create Device n TTN ===
102 102  
103 103  Create a device in TTN V3 with the OTAA keys from LHT65N.
104 104  
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128 128  [[image:image-20220522233118-7.png]]
129 129  
130 130  
131 -=== 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
126 +=== Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
132 132  
133 133  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.
134 134  
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265 265  [[Time Stamp>>path:#Unix_Time_Stamp]]
266 266  )))
267 267  
268 -* **Battery status & **[[(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)**Built-in Humidity**>>path:#SHT20_Humidity]]
263 +* **Battery status & **[[(% class="wikiinternallink wikiinternallink wikiinternallink" %)**Built-in Humidity**>>path:#SHT20_Humidity]]
269 269  
270 270  (% style="width:587px" %)
271 271  |Bit(bit)|(% style="width:280px" %)[15:14]|(% style="width:136px" %)[11:0]
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592 592  Set transmit interval to 60000ms = 60 seconds
593 593  )))
594 594  
590 +
595 595  **Downlink Command: 0x01**
596 596  
597 597  Format: Command Code (0x01) followed by 3 bytes time value.
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601 601  * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
602 602  * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
603 603  
600 +
604 604  == Set External Sensor Mode ==
605 605  
606 606  Feature: Change External Sensor Mode.
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618 618  |AT+EXT=1|(% colspan="2" %)Set external sensor mode to 1
619 619  |AT+EXT=9|(% colspan="2" %)Set to external DS18B20 with timestamp
620 620  
618 +
621 621  **Downlink Command: 0xA2**
622 622  
623 623  Total bytes: 2 ~~ 5 bytes
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628 628  * 0xA209: Same as AT+EXT=9
629 629  * 0xA20702003c,Same as AT+SETCNT=60
630 630  
629 +
631 631  == Enable/Disable uplink Temperature probe ID ==
632 632  
633 633  Feature: If PID is enabled, device will send the temperature probe ID on:
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643 643  |**Command Example**|**Function**|**Response**
644 644  |AT+PID=1|Enable PID uplink|OK
645 645  
645 +
646 646  **Downlink Command:**
647 647  
648 648  * 0xA800     à AT+PID=0
649 649  * 0xA801     à AT+PID=1
650 650  
651 +
652 +
651 651  == Set Password ==
652 652  
653 653  Feature: Set device password, max 9 digits
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663 663  )))
664 664  |AT+PWORD=999999|Set password|OK
665 665  
668 +
666 666  **Downlink Command:**
667 667  
668 668  No downlink command for this feature.
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677 677  |**Command Example**|**Function**|**Response**
678 678  |AT+DISAT|Quit AT Commands mode|OK
679 679  
683 +
680 680  **Downlink Command:**
681 681  
682 682  No downlink command for this feature.
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696 696  OK
697 697  )))
698 698  
703 +
699 699  **Downlink Command:**
700 700  
701 701  * There is no downlink command to set to Sleep mode.
702 702  
708 +
709 +
703 703  == Set system time ==
704 704  
705 705  Feature: Set system time, unix format. [[See here for format detail.>>path:#TimeStamp]]
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713 713  Set System time to 2021-01-20 00:59:12
714 714  )))
715 715  
723 +
716 716  **Downlink Command:**
717 717  
718 718  0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
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731 731  |**Command Example**|**Function**
732 732  |AT+SYNCMOD=1|Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
733 733  
742 +
734 734  **Downlink Command:**
735 735  
736 736  0x28 01 ~/~/ Same As AT+SYNCMOD=1
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747 747  |**Command Example**|**Function**
748 748  |AT+SYNCTDC=0x0A|Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
749 749  
759 +
750 750  **Downlink Command:**
751 751  
752 752  0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
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802 802  OK
803 803  )))
804 804  
815 +
805 805  **Downlink Command:**
806 806  
807 807  No downlink commands for feature
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839 839  OK
840 840  )))
841 841  
853 +
842 842  **Downlink Command:**
843 843  
844 844  No downlink commands for feature
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858 858  OK
859 859  )))
860 860  
873 +
861 861  **Downlink Command: 0xA3**
862 862  
863 863  * Example: 0xA301 ~/~/Same as AT+CLRDTA
864 864  
865 865  
879 +
880 +
866 866  = Battery & How to replace =
867 867  
868 868  == Battery Type ==
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