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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 181.1
edited by Bei Jinggeng
on 2022/06/28 15:07
Change comment: Uploaded new attachment "image-20220628150714-4.png", version {1}

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Details

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Author
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1 -XWiki.Xiaoling
1 +XWiki.Bei
Content
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164 164  [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
165 165  
166 166  
167 +Note: LHT65N use same payload as LHT65.
167 167  
168 -(% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
169 169  
170 -
171 171  [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
172 172  
173 173  
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266 266  
267 267  * The First 6 bytes: has fix meanings for every LHT65N.
268 268  * The 7th byte (EXT #): defines the external sensor model.
269 -* 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.)
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.)
270 270  
271 271  
272 -
273 273  === 2.4.1 Decoder in TTN V3 ===
274 274  
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.
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301 301  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
302 302  
303 303  
304 -
305 305  === 2.4.3 Built-in Temperature ===
306 306  
307 307  [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
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313 313  * Temperature:  (0xF5C6-65536)/100=-26.18℃
314 314  
315 315  
316 -
317 317  === 2.4.4 Built-in Humidity ===
318 318  
319 319  [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
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321 321  * Humidity:    0x025C/10=60.4%
322 322  
323 323  
324 -
325 325  === 2.4.5 Ext # ===
326 326  
327 327  Bytes for External Sensor:
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468 468  
469 469  * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
470 470  
471 -(% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
472 -|(% 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]**
473 -|(% 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)
466 +[[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
474 474  
475 -* (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
476 -* (% 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.
477 -* (% 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)
468 +* Poll Message Flag:  1: This message is a poll message reply, 0: means this is a normal uplink.
469 +* 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 +* 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)
478 478  
479 479  
480 -
481 -
482 482  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
483 483  
484 484  In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
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489 489  
490 490  AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
491 491  
492 -For example:
493 493  
494 -AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
495 495  
496 -
497 -Or use **downlink command A2** to set the same.
498 -
499 -The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
500 -
501 -When the measured output voltage of the sensor is not within the range of 0.1V and 1.1V, the output voltage terminal of the sensor shall be divided The example in the following figure is to reduce the output voltage of the sensor by three times If it is necessary to reduce more times, calculate according to the formula in the figure and connect the corresponding resistance in series.
502 -
503 -[[image:image-20220628150112-1.png||height="241" width="285"]]
504 -
505 -
506 -When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
507 -
508 -[[image:image-20220628150714-4.png]]
509 -
510 -
511 -When the voltage collected by ADC_IN1 is less than the minimum range, the minimum range will be used as the output; Similarly, when the collected voltage is greater than the maximum range, the maximum range will be used as the output.
512 -
513 -1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
514 -
515 -[[image:image-20220628151005-5.png]]
516 -
517 -
518 -2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
519 -
520 -[[image:image-20220628151056-6.png]]
521 -
522 -
523 -3) Within range
524 -
525 -[[image:image-20220628151143-7.png]]
526 -
527 -
528 -
529 529  == 2.5 Show data on Datacake ==
530 530  
531 531  (((
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585 585  
586 586  There are two methods:
587 587  
588 -1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
589 -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.
544 +1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range.
545 +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.
590 590  
591 -Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
592 592  
593 -[[image:image-20220703111700-2.png||height="381" width="1119"]]
594 -
595 -
596 596  === 2.6.2 Unix TimeStamp ===
597 597  
598 598  
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1033 1033  )))
1034 1034  )))
1035 1035  
1036 -(% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1037 1037  
1038 -Total bytes: 8 bytes
1039 1039  
1040 -**Example:**AA0100010001003C
1041 -
1042 -WMOD=01
1043 -
1044 -CITEMP=0001
1045 -
1046 -TEMPlow=0001
1047 -
1048 -TEMPhigh=003C
1049 -
1050 -
1051 1051  == 2.8 LED Indicator ==
1052 1052  
1053 1053  The LHT65 has a triple color LED which for easy showing different stage .
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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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1789 1789  [[image:image-20220615154519-3.png||height="672" width="807"]]
1790 1790  
1791 1791  
1792 -== 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1723 +== 6.6 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1793 1793  
1794 1794  [[image:image-20220623110706-1.png]]
1795 1795  
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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:
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