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Last modified by Xiaoling on 2023/07/18 10:12
From version 189.2
edited by Xiaoling
on 2022/07/22 10:33
Change comment: There is no comment for this version
To version 188.1
edited by Edwin Chen
on 2022/07/03 11:17
Change comment: There is no comment for this version

Summary

Details

Page properties
Author
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1 -XWiki.Xiaoling
1 +XWiki.Edwin
Content
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58 58  * Tri-color LED to indicate working status
59 59  * Datalog feature
60 60  
61 +
62 +
63 +
61 61  == 1.3 Specification ==
62 62  
63 63  
... ... @@ -82,6 +82,9 @@
82 82  * ±2°C accuracy from -55°C to +125°C
83 83  * Operating Range: -55 °C ~~ 125 °C
84 84  
88 +
89 +
90 +
85 85  = 2. Connect LHT65N to IoT Server =
86 86  
87 87  == 2.1 How does LHT65N work? ==
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263 263  * The 7th byte (EXT #): defines the external sensor model.
264 264  * The 8(% _msthash="734578" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) ~~ 11(% _msthash="734579" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) byte: the value for external sensor value. The definition is based on external sensor type. (If EXT=0, there won’t be these four bytes.)
265 265  
272 +
273 +
274 +
266 266  === 2.4.1 Decoder in TTN V3 ===
267 267  
268 268  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.
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293 293  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
294 294  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
295 295  
305 +
306 +
307 +
296 296  === 2.4.3 Built-in Temperature ===
297 297  
298 298  [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
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461 461  
462 462  * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
463 463  
464 -(% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
465 -|(% style="width:60px" %)**Bits**|(% style="width:90px" %)**7**|(% style="width:100px" %)**6**|(% style="width:90px" %)**5**|(% style="width:100px" %)**4**|(% style="width:60px" %)**[3:0]**
466 -|(% style="width:96px" %)**Status&Ext**|(% style="width:124px" %)None-ACK Flag|(% style="width:146px" %)Poll Message FLAG|(% style="width:109px" %)Sync time OK|(% style="width:143px" %)Unix Time Request|(% style="width:106px" %)Ext: 0b(1001)
476 +[[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
467 467  
468 -* (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
469 -* (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
470 -* (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
478 +* Poll Message Flag:  1: This message is a poll message reply, 0: means this is a normal uplink.
479 +* Sync time OK:  1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
480 +* Unix Time Request:  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
471 471  
472 472  
473 473  
484 +
474 474  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
475 475  
476 476  In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
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1025 1025  )))
1026 1026  )))
1027 1027  
1028 -(% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1029 1029  
1030 -Total bytes: 8 bytes
1031 1031  
1032 -**Example:**AA0100010001003C
1033 -
1034 -WMOD=01
1035 -
1036 -CITEMP=0001
1037 -
1038 -TEMPlow=0001
1039 -
1040 -TEMPhigh=003C
1041 -
1042 -
1043 1043  == 2.8 LED Indicator ==
1044 1044  
1045 1045  The LHT65 has a triple color LED which for easy showing different stage .
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1053 1053  * RED LED when external sensor is not connected
1054 1054  * For each success downlink, the PURPLE LED will blink once
1055 1055  
1054 +
1055 +
1056 +
1056 1056  == 2.9 installation ==
1057 1057  
1058 1058  (% _mstvisible="1" %)
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1103 1103  * Operating Range: -40 ~~ 125 °C
1104 1104  * Working voltage 2.35v ~~ 5v
1105 1105  
1107 +
1108 +
1109 +
1106 1106  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1107 1107  
1108 1108  (((
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1168 1168  
1169 1169  * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1170 1170  
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1176 +
1177 +
1171 1171  == 4.2 Set External Sensor Mode ==
1172 1172  
1173 1173  Feature: Change External Sensor Mode.
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1189 1189  
1190 1190  * 0xA20702003c: Same as AT+SETCNT=60
1191 1191  
1199 +
1200 +
1201 +
1192 1192  == 4.3 Enable/Disable uplink Temperature probe ID ==
1193 1193  
1194 1194  (((
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1216 1216  * **0xA800**  **~-~->** AT+PID=0
1217 1217  * **0xA801**     **~-~->** AT+PID=1
1218 1218  
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1230 +
1231 +
1219 1219  == 4.4 Set Password ==
1220 1220  
1221 1221  Feature: Set device password, max 9 digits
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1262 1262  
1263 1263  * There is no downlink command to set to Sleep mode.
1264 1264  
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1279 +
1280 +
1265 1265  == 4.7 Set system time ==
1266 1266  
1267 1267  Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
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1358 1358  
1359 1359  * Example: 0xA301 ~/~/Same as AT+CLRDTA
1360 1360  
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1378 +
1379 +
1361 1361  == 4.13 Auto Send None-ACK messages ==
1362 1362  
1363 1363  (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
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1376 1376  
1377 1377  * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1378 1378  
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1379 1379  = 5. Battery & How to replace =
1380 1380  
1381 1381  == 5.1 Battery Type ==
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1828 1828  
1829 1829  * (% style="color:red" %)**E3**(%%): External Temperature Probe
1830 1830  
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1831 1831  = 8. Packing Info =
1832 1832  
1833 1833  
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1841 1841  * Device Size:  10 x 10 x 3.5 cm
1842 1842  * Device Weight: 120.5g
1843 1843  
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1844 1844  = 9. Reference material =
1845 1845  
1846 1846  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1847 1847  
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1848 1848  = 10. FCC Warning =
1849 1849  
1850 1850  This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions: