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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 184.1
edited by Bei Jinggeng
on 2022/06/28 15:11
Change comment: Uploaded new attachment "image-20220628151143-7.png", version {1}

Summary

Details

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Author
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1 -XWiki.Xiaoling
1 +XWiki.Bei
Content
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58 58  * Tri-color LED to indicate working status
59 59  * Datalog feature
60 60  
61 +
62 +
61 61  == 1.3 Specification ==
62 62  
63 63  
... ... @@ -82,6 +82,8 @@
82 82  * ±2°C accuracy from -55°C to +125°C
83 83  * Operating Range: -55 °C ~~ 125 °C
84 84  
87 +
88 +
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  
270 +
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.
... ... @@ -293,6 +293,7 @@
293 293  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
294 294  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
295 295  
301 +
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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304 304  * Temperature:  (0xF5C6-65536)/100=-26.18℃
305 305  
306 306  
307 -
308 -
309 309  === 2.4.4 Built-in Humidity ===
310 310  
311 311  [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
... ... @@ -313,8 +313,6 @@
313 313  * Humidity:    0x025C/10=60.4%
314 314  
315 315  
316 -
317 -
318 318  === 2.4.5 Ext # ===
319 319  
320 320  Bytes for External Sensor:
... ... @@ -461,16 +461,13 @@
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)
466 +[[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)
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)
471 471  
472 472  
473 -
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
... ... @@ -481,43 +481,8 @@
481 481  
482 482  AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
483 483  
484 -For example:
485 485  
486 -AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
487 487  
488 -
489 -Or use **downlink command A2** to set the same.
490 -
491 -The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
492 -
493 -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.
494 -
495 -[[image:image-20220628150112-1.png||height="241" width="285"]]
496 -
497 -
498 -When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
499 -
500 -[[image:image-20220628150714-4.png]]
501 -
502 -
503 -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.
504 -
505 -1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
506 -
507 -[[image:image-20220628151005-5.png]]
508 -
509 -
510 -2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
511 -
512 -[[image:image-20220628151056-6.png]]
513 -
514 -
515 -3) Within range
516 -
517 -[[image:image-20220628151143-7.png]]
518 -
519 -
520 -
521 521  == 2.5 Show data on Datacake ==
522 522  
523 523  (((
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577 577  
578 578  There are two methods:
579 579  
580 -1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
581 -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.
582 582  
583 -Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
584 584  
585 -[[image:image-20220703111700-2.png||height="381" width="1119"]]
586 -
587 -
588 588  === 2.6.2 Unix TimeStamp ===
589 589  
590 590  
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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  
1003 +
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  
1054 +
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  
1120 +
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  
1142 +
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  
1170 +
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  
1217 +
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  
1314 +
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  
1333 +
1379 1379  = 5. Battery & How to replace =
1380 1380  
1381 1381  == 5.1 Battery Type ==
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1765 1765  [[image:image-20220615154519-3.png||height="672" width="807"]]
1766 1766  
1767 1767  
1768 -== 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? ==
1769 1769  
1770 1770  [[image:image-20220623110706-1.png]]
1771 1771  
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1828 1828  
1829 1829  * (% style="color:red" %)**E3**(%%): External Temperature Probe
1830 1830  
1786 +
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  
1800 +
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  
1805 +
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:
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