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Last modified by Xiaoling on 2023/07/18 10:12
From version 189.7
edited by Xiaoling
on 2022/07/22 11:10
Change comment: There is no comment for this version
To version 189.8
edited by Xiaoling
on 2022/08/08 16:22
Change comment: There is no comment for this version

Summary

Details

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Content
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1 1  (% style="text-align:center" %)
2 -[[image:image-20220613162008-1.png||_mstalt="428142" height="579" width="379"]]
2 +[[image:image-20220613162008-1.png||_mstalt="428142" height="510" width="334"]]
3 3  
4 4  
5 5  
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46 46  
47 47  == 1.2 Features ==
48 48  
49 +
49 49  * Wall mountable
50 50  * LoRaWAN v1.0.3 Class A protocol
51 51  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
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70 70  * Long Term Drift: < 0.02 °C/yr
71 71  * Operating Range: -40 ~~ 85 °C
72 72  
74 +
75 +
73 73  **Built-in Humidity Sensor:**
74 74  
75 75  * Resolution: 0.04 %RH
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77 77  * Long Term Drift: < 0.02 °C/yr
78 78  * Operating Range: 0 ~~ 96 %RH
79 79  
83 +
84 +
80 80  **External Temperature Sensor:**
81 81  
82 82  * Resolution: 0.0625 °C
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90 90  
91 91  == 2.1 How does LHT65N work? ==
92 92  
98 +
93 93  (((
94 94  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.
95 95  )))
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99 99  )))
100 100  
101 101  
108 +
102 102  == 2.2 How to Activate LHT65N? ==
103 103  
111 +
104 104  (((
105 105  The LHT65N has two working modes:
106 106  )))
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125 125  
126 126  == 2.3 Example to join LoRaWAN network ==
127 127  
136 +
128 128  (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
129 129  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.
130 130  
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140 140  
141 141  === 2.3.1 Step 1: Create Device n TTN ===
142 142  
152 +
143 143  (((
144 144  Create a device in TTN V3 with the OTAA keys from LHT65N.
145 145  )))
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181 181  
182 182  === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
183 183  
194 +
184 184  (((
185 185  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.
186 186  )))
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192 192  
193 193  == 2.4 Uplink Payload ==
194 194  
206 +
195 195  (((
196 196  The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% _mstvisible="3" style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
197 197  )))
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272 272  
273 273  === 2.4.1 Decoder in TTN V3 ===
274 274  
287 +
275 275  When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N decoder in TTNv3 for friendly reading.
276 276  
277 277  Below is the position to put the decoder and LHT65N decoder can be download from here:
... ... @@ -287,6 +287,7 @@
287 287  
288 288  === 2.4.2 BAT-Battery Info ===
289 289  
303 +
290 290  These two bytes of BAT include the battery state and the actually voltage
291 291  
292 292  [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
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304 304  
305 305  === 2.4.3 Built-in Temperature ===
306 306  
321 +
307 307  [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
308 308  
309 309  * Temperature:  0x0ABB/100=27.47℃
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316 316  
317 317  === 2.4.4 Built-in Humidity ===
318 318  
334 +
319 319  [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
320 320  
321 321  * Humidity:    0x025C/10=60.4%
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324 324  
325 325  === 2.4.5 Ext # ===
326 326  
343 +
327 327  Bytes for External Sensor:
328 328  
329 329  [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
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355 355  
356 356  ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
357 357  
375 +
358 358  (((
359 359  Timestamp mode is designed for LHT65N with E3 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
360 360  )))
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478 478  
479 479  
480 480  
481 -
482 482  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
483 483  
501 +
484 484  In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
485 485  
486 486  be used to power the external ADC sensor; user can control the power on time for this
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528 528  
529 529  == 2.5 Show data on Datacake ==
530 530  
549 +
531 531  (((
532 532  Datacake IoT platform provides a human-friendly interface to show the sensor data, once we have sensor data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
533 533  )))
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575 575  
576 576  == 2.6 Datalog Feature ==
577 577  
597 +
578 578  (((
579 579  Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, LHT65N will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65N.
580 580  )))
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583 583  
584 584  === 2.6.1 Ways to get datalog via LoRaWAN ===
585 585  
606 +
586 586  There are two methods:
587 587  
588 588  1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
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615 615  
616 616  === 2.6.3 Set Device Time ===
617 617  
639 +
618 618  (((
619 619  There are two ways to set device's time:
620 620  )))
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632 632  )))
633 633  
634 634  (((
635 -(% style="color:red" %)Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn’t support. If server doesn’t support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.
657 +(% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**
636 636  )))
637 637  
638 638  (((
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651 651  
652 652  === 2.6.4 Poll sensor value ===
653 653  
676 +
654 654  User can poll sensor value based on timestamps from the server. Below is the downlink command.
655 655  
656 656  [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
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668 668  
669 669  === 2.6.5 Datalog Uplink payload ===
670 670  
694 +
671 671  (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
672 672  The Datalog poll reply uplink will use below payload format.
673 673  
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674 674  (% _mstvisible="1" %)
675 675  (((
676 676  (% _mstvisible="2" %)
701 +
702 +
703 +(% _mstvisible="2" %)
677 677  (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
678 678  )))
679 679  
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801 801  )))
802 802  )))
803 803  
831 +
804 804  (% _mstvisible="1" %)
805 805  (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
806 806  
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936 936  (% _mstvisible="1" %)
937 937  (((
938 938  (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
939 - Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
967 + Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
940 940  )))
941 941  
942 942  (% _mstvisible="1" %)
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1062 1062  * For each success downlink, the PURPLE LED will blink once
1063 1063  
1064 1064  
1065 -
1066 1066  == 2.9 installation ==
1067 1067  
1068 1068  (% _mstvisible="1" %)
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1114 1114  * Working voltage 2.35v ~~ 5v
1115 1115  
1116 1116  
1117 -
1118 1118  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1119 1119  
1120 1120  (((
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1181 1181  * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1182 1182  
1183 1183  
1184 -
1185 1185  == 4.2 Set External Sensor Mode ==
1186 1186  
1187 1187  Feature: Change External Sensor Mode.
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1204 1204  * 0xA20702003c: Same as AT+SETCNT=60
1205 1205  
1206 1206  
1207 -
1208 1208  == 4.3 Enable/Disable uplink Temperature probe ID ==
1209 1209  
1210 1210  (((
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1233 1233  * **0xA801**     **~-~->** AT+PID=1
1234 1234  
1235 1235  
1236 -
1237 1237  == 4.4 Set Password ==
1238 1238  
1239 1239  Feature: Set device password, max 9 digits
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1281 1281  * There is no downlink command to set to Sleep mode.
1282 1282  
1283 1283  
1284 -
1285 1285  == 4.7 Set system time ==
1286 1286  
1287 1287  Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
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1379 1379  * Example: 0xA301 ~/~/Same as AT+CLRDTA
1380 1380  
1381 1381  
1382 -
1383 1383  == 4.13 Auto Send None-ACK messages ==
1384 1384  
1385 1385  (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
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1399 1399  * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1400 1400  
1401 1401  
1402 -
1403 1403  = 5. Battery & How to replace =
1404 1404  
1405 1405  == 5.1 Battery Type ==
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1853 1853  * (% style="color:red" %)**E3**(%%): External Temperature Probe
1854 1854  
1855 1855  
1856 -
1857 1857  = 8. Packing Info =
1858 1858  
1859 1859  
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1868 1868  * Device Weight: 120.5g
1869 1869  
1870 1870  
1871 -
1872 1872  = 9. Reference material =
1873 1873  
1874 1874  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1875 1875  
1876 1876  
1877 -
1878 1878  = 10. FCC Warning =
1879 1879  
1880 1880  This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions: