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Last modified by Xiaoling on 2023/07/18 10:12
From version 189.1
edited by Bei Jinggeng
on 2022/07/06 13:48
Change comment: There is no comment for this version
To version 185.2
edited by Xiaoling
on 2022/06/29 13:55
Change comment: There is no comment for this version

Summary

Details

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Author
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1 -XWiki.Bei
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 63  == 1.3 Specification ==
64 64  
65 65  
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84 84  * ±2°C accuracy from -55°C to +125°C
85 85  * Operating Range: -55 °C ~~ 125 °C
86 86  
87 -
88 -
89 89  = 2. Connect LHT65N to IoT Server =
90 90  
91 91  == 2.1 How does LHT65N work? ==
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267 267  * The 7th byte (EXT #): defines the external sensor model.
268 268  * 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.)
269 269  
270 -
271 -
272 272  === 2.4.1 Decoder in TTN V3 ===
273 273  
274 274  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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299 299  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
300 300  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
301 301  
302 -
303 -
304 304  === 2.4.3 Built-in Temperature ===
305 305  
306 306  [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
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311 311  
312 312  * Temperature:  (0xF5C6-65536)/100=-26.18℃
313 313  
314 -
315 -
316 316  === 2.4.4 Built-in Humidity ===
317 317  
318 318  [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
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319 319  
320 320  * Humidity:    0x025C/10=60.4%
321 321  
322 -
323 -
324 324  === 2.4.5 Ext # ===
325 325  
326 326  Bytes for External Sensor:
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473 473  * 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.
474 474  * 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)
475 475  
476 -
477 -
478 478  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
479 479  
480 480  In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
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521 521  [[image:image-20220628151143-7.png]]
522 522  
523 523  
524 -
525 525  == 2.5 Show data on Datacake ==
526 526  
527 527  (((
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581 581  
582 582  There are two methods:
583 583  
584 -1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
585 -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.
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.
586 586  
587 -Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
588 -
589 -[[image:image-20220703111700-2.png||height="381" width="1119"]]
590 -
591 -
592 592  === 2.6.2 Unix TimeStamp ===
593 593  
594 594  
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1029 1029  )))
1030 1030  )))
1031 1031  
1032 -(% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1033 1033  
1034 -Total bytes: 8 bytes
1035 1035  
1036 -**Example:**AA0100010001003C
1037 -
1038 -WMOD=01
1039 -
1040 -CITEMP=0001
1041 -
1042 -TEMPlow=0001
1043 -
1044 -TEMPhigh=003C
1045 -
1046 -
1047 1047  == 2.8 LED Indicator ==
1048 1048  
1049 1049  The LHT65 has a triple color LED which for easy showing different stage .
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1057 1057  * RED LED when external sensor is not connected
1058 1058  * For each success downlink, the PURPLE LED will blink once
1059 1059  
1060 -
1061 -
1062 1062  == 2.9 installation ==
1063 1063  
1064 1064  (% _mstvisible="1" %)
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1109 1109  * Operating Range: -40 ~~ 125 °C
1110 1110  * Working voltage 2.35v ~~ 5v
1111 1111  
1112 -
1113 -
1114 1114  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1115 1115  
1116 1116  (((
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1176 1176  
1177 1177  * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1178 1178  
1179 -
1180 -
1181 1181  == 4.2 Set External Sensor Mode ==
1182 1182  
1183 1183  Feature: Change External Sensor Mode.
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1199 1199  
1200 1200  * 0xA20702003c: Same as AT+SETCNT=60
1201 1201  
1202 -
1203 -
1204 1204  == 4.3 Enable/Disable uplink Temperature probe ID ==
1205 1205  
1206 1206  (((
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1228 1228  * **0xA800**  **~-~->** AT+PID=0
1229 1229  * **0xA801**     **~-~->** AT+PID=1
1230 1230  
1231 -
1232 -
1233 1233  == 4.4 Set Password ==
1234 1234  
1235 1235  Feature: Set device password, max 9 digits
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1276 1276  
1277 1277  * There is no downlink command to set to Sleep mode.
1278 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 1379  == 4.13 Auto Send None-ACK messages ==
1380 1380  
1381 1381  (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
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1394 1394  
1395 1395  * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1396 1396  
1397 -
1398 -
1399 1399  = 5. Battery & How to replace =
1400 1400  
1401 1401  == 5.1 Battery Type ==
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1850 1850  
1851 1851  
1852 1852  
1804 +
1805 +
1853 1853  = 8. Packing Info =
1854 1854  
1855 1855  
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1865 1865  
1866 1866  
1867 1867  
1821 +
1822 +
1868 1868  = 9. Reference material =
1869 1869  
1870 1870  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
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1871 1871  
1872 1872  
1873 1873  
1829 +
1830 +
1874 1874  = 10. FCC Warning =
1875 1875  
1876 1876  This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
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