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

Summary

Details

Page properties
Author
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1 -XWiki.Edwin
1 +XWiki.Xiaoling
Content
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58 58  * Tri-color LED to indicate working status
59 59  * Datalog feature
60 60  
61 -
62 -
63 -
64 64  == 1.3 Specification ==
65 65  
66 66  
... ... @@ -85,9 +85,6 @@
85 85  * ±2°C accuracy from -55°C to +125°C
86 86  * Operating Range: -55 °C ~~ 125 °C
87 87  
88 -
89 -
90 -
91 91  = 2. Connect LHT65N to IoT Server =
92 92  
93 93  == 2.1 How does LHT65N work? ==
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269 269  * The 7th byte (EXT #): defines the external sensor model.
270 270  * 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.)
271 271  
272 -
273 -
274 -
275 275  === 2.4.1 Decoder in TTN V3 ===
276 276  
277 277  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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302 302  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
303 303  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
304 304  
305 -
306 -
307 -
308 308  === 2.4.3 Built-in Temperature ===
309 309  
310 310  [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
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473 473  
474 474  * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
475 475  
476 -[[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
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)
477 477  
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)
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)
481 481  
482 482  
483 483  
484 -
485 485  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
486 486  
487 487  In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
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1036 1036  )))
1037 1037  )))
1038 1038  
1028 +(% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1039 1039  
1030 +Total bytes: 8 bytes
1040 1040  
1032 +**Example:**AA0100010001003C
1033 +
1034 +WMOD=01
1035 +
1036 +CITEMP=0001
1037 +
1038 +TEMPlow=0001
1039 +
1040 +TEMPhigh=003C
1041 +
1042 +
1041 1041  == 2.8 LED Indicator ==
1042 1042  
1043 1043  The LHT65 has a triple color LED which for easy showing different stage .
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1051 1051  * RED LED when external sensor is not connected
1052 1052  * For each success downlink, the PURPLE LED will blink once
1053 1053  
1054 -
1055 -
1056 -
1057 1057  == 2.9 installation ==
1058 1058  
1059 1059  (% _mstvisible="1" %)
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1104 1104  * Operating Range: -40 ~~ 125 °C
1105 1105  * Working voltage 2.35v ~~ 5v
1106 1106  
1107 -
1108 -
1109 -
1110 1110  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1111 1111  
1112 1112  (((
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1172 1172  
1173 1173  * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1174 1174  
1175 -
1176 -
1177 -
1178 1178  == 4.2 Set External Sensor Mode ==
1179 1179  
1180 1180  Feature: Change External Sensor Mode.
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1196 1196  
1197 1197  * 0xA20702003c: Same as AT+SETCNT=60
1198 1198  
1199 -
1200 -
1201 -
1202 1202  == 4.3 Enable/Disable uplink Temperature probe ID ==
1203 1203  
1204 1204  (((
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1226 1226  * **0xA800**  **~-~->** AT+PID=0
1227 1227  * **0xA801**     **~-~->** AT+PID=1
1228 1228  
1229 -
1230 -
1231 -
1232 1232  == 4.4 Set Password ==
1233 1233  
1234 1234  Feature: Set device password, max 9 digits
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1275 1275  
1276 1276  * There is no downlink command to set to Sleep mode.
1277 1277  
1278 -
1279 -
1280 -
1281 1281  == 4.7 Set system time ==
1282 1282  
1283 1283  Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
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1374 1374  
1375 1375  * Example: 0xA301 ~/~/Same as AT+CLRDTA
1376 1376  
1377 -
1378 -
1379 -
1380 1380  == 4.13 Auto Send None-ACK messages ==
1381 1381  
1382 1382  (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
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1395 1395  
1396 1396  * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1397 1397  
1398 -
1399 -
1400 -
1401 1401  = 5. Battery & How to replace =
1402 1402  
1403 1403  == 5.1 Battery Type ==
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1850 1850  
1851 1851  * (% style="color:red" %)**E3**(%%): External Temperature Probe
1852 1852  
1853 -
1854 -
1855 -
1856 1856  = 8. Packing Info =
1857 1857  
1858 1858  
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1866 1866  * Device Size:  10 x 10 x 3.5 cm
1867 1867  * Device Weight: 120.5g
1868 1868  
1869 -
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 -
1877 -
1878 -
1879 1879  = 10. FCC Warning =
1880 1880  
1881 1881  This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions: