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Last modified by Xiaoling on 2023/07/18 10:12
From version 185.2
edited by Xiaoling
on 2022/06/29 13:55
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

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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  
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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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303 303  
304 304  * Temperature:  (0xF5C6-65536)/100=-26.18℃
305 305  
318 +
319 +
320 +
306 306  === 2.4.4 Built-in Humidity ===
307 307  
308 308  [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
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309 309  
310 310  * Humidity:    0x025C/10=60.4%
311 311  
327 +
328 +
329 +
312 312  === 2.4.5 Ext # ===
313 313  
314 314  Bytes for External Sensor:
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461 461  * 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.
462 462  * 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)
463 463  
482 +
483 +
484 +
464 464  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
465 465  
466 466  In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
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507 507  [[image:image-20220628151143-7.png]]
508 508  
509 509  
531 +
510 510  == 2.5 Show data on Datacake ==
511 511  
512 512  (((
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566 566  
567 567  There are two methods:
568 568  
569 -1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range.
570 -1. Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will store the sensor data, and it will send all messages after network recover.
591 +1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
592 +1. Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will store the sensor data, and it will send all messages after the network recovery.
571 571  
594 +Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
595 +
596 +[[image:image-20220703111700-2.png||height="381" width="1119"]]
597 +
598 +
572 572  === 2.6.2 Unix TimeStamp ===
573 573  
574 574  
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1024 1024  * RED LED when external sensor is not connected
1025 1025  * For each success downlink, the PURPLE LED will blink once
1026 1026  
1054 +
1055 +
1056 +
1027 1027  == 2.9 installation ==
1028 1028  
1029 1029  (% _mstvisible="1" %)
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1074 1074  * Operating Range: -40 ~~ 125 °C
1075 1075  * Working voltage 2.35v ~~ 5v
1076 1076  
1107 +
1108 +
1109 +
1077 1077  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1078 1078  
1079 1079  (((
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1139 1139  
1140 1140  * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1141 1141  
1175 +
1176 +
1177 +
1142 1142  == 4.2 Set External Sensor Mode ==
1143 1143  
1144 1144  Feature: Change External Sensor Mode.
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1160 1160  
1161 1161  * 0xA20702003c: Same as AT+SETCNT=60
1162 1162  
1199 +
1200 +
1201 +
1163 1163  == 4.3 Enable/Disable uplink Temperature probe ID ==
1164 1164  
1165 1165  (((
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1187 1187  * **0xA800**  **~-~->** AT+PID=0
1188 1188  * **0xA801**     **~-~->** AT+PID=1
1189 1189  
1229 +
1230 +
1231 +
1190 1190  == 4.4 Set Password ==
1191 1191  
1192 1192  Feature: Set device password, max 9 digits
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1233 1233  
1234 1234  * There is no downlink command to set to Sleep mode.
1235 1235  
1278 +
1279 +
1280 +
1236 1236  == 4.7 Set system time ==
1237 1237  
1238 1238  Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
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1329 1329  
1330 1330  * Example: 0xA301 ~/~/Same as AT+CLRDTA
1331 1331  
1377 +
1378 +
1379 +
1332 1332  == 4.13 Auto Send None-ACK messages ==
1333 1333  
1334 1334  (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
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1347 1347  
1348 1348  * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1349 1349  
1398 +
1399 +
1400 +
1350 1350  = 5. Battery & How to replace =
1351 1351  
1352 1352  == 5.1 Battery Type ==
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1802 1802  
1803 1803  
1804 1804  
1805 -
1806 1806  = 8. Packing Info =
1807 1807  
1808 1808  
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1819 1819  
1820 1820  
1821 1821  
1822 -
1823 1823  = 9. Reference material =
1824 1824  
1825 1825  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
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1827 1827  
1828 1828  
1829 1829  
1830 -
1831 1831  = 10. FCC Warning =
1832 1832  
1833 1833  This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
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