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Last modified by Xiaoling on 2023/07/18 10:12
From version 186.1
edited by Edwin Chen
on 2022/07/03 11:15
Change comment: Uploaded new attachment "image-20220703111533-1.png", version {1}
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

Page properties
Author
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1 -XWiki.Edwin
1 +XWiki.Bei
Content
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60 60  
61 61  
62 62  
63 -
64 -
65 65  == 1.3 Specification ==
66 66  
67 67  
... ... @@ -88,8 +88,6 @@
88 88  
89 89  
90 90  
91 -
92 -
93 93  = 2. Connect LHT65N to IoT Server =
94 94  
95 95  == 2.1 How does LHT65N work? ==
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272 272  * 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.)
273 273  
274 274  
275 -
276 -
277 -
278 278  === 2.4.1 Decoder in TTN V3 ===
279 279  
280 280  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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306 306  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
307 307  
308 308  
309 -
310 -
311 -
312 312  === 2.4.3 Built-in Temperature ===
313 313  
314 314  [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
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320 320  * Temperature:  (0xF5C6-65536)/100=-26.18℃
321 321  
322 322  
323 -
324 -
325 -
326 326  === 2.4.4 Built-in Humidity ===
327 327  
328 328  [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
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330 330  * Humidity:    0x025C/10=60.4%
331 331  
332 332  
333 -
334 -
335 -
336 336  === 2.4.5 Ext # ===
337 337  
338 338  Bytes for External Sensor:
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486 486  * 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)
487 487  
488 488  
489 -
490 -
491 -
492 492  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
493 493  
494 494  In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
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499 499  
500 500  AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
501 501  
502 -For example:
503 503  
504 -AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
505 505  
506 -
507 -Or use **downlink command A2** to set the same.
508 -
509 -The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
510 -
511 -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.
512 -
513 -[[image:image-20220628150112-1.png||height="241" width="285"]]
514 -
515 -
516 -When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
517 -
518 -[[image:image-20220628150714-4.png]]
519 -
520 -
521 -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.
522 -
523 -1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
524 -
525 -[[image:image-20220628151005-5.png]]
526 -
527 -
528 -2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
529 -
530 -[[image:image-20220628151056-6.png]]
531 -
532 -
533 -3) Within range
534 -
535 -[[image:image-20220628151143-7.png]]
536 -
537 -
538 -
539 539  == 2.5 Show data on Datacake ==
540 540  
541 541  (((
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599 599  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.
600 600  
601 601  
602 -
603 -
604 -
605 605  === 2.6.2 Unix TimeStamp ===
606 606  
607 607  
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1058 1058  * For each success downlink, the PURPLE LED will blink once
1059 1059  
1060 1060  
1061 -
1062 -
1063 -
1064 1064  == 2.9 installation ==
1065 1065  
1066 1066  (% _mstvisible="1" %)
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1112 1112  * Working voltage 2.35v ~~ 5v
1113 1113  
1114 1114  
1115 -
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 -
1186 -
1187 1187  == 4.2 Set External Sensor Mode ==
1188 1188  
1189 1189  Feature: Change External Sensor Mode.
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1206 1206  * 0xA20702003c: Same as AT+SETCNT=60
1207 1207  
1208 1208  
1209 -
1210 -
1211 -
1212 1212  == 4.3 Enable/Disable uplink Temperature probe ID ==
1213 1213  
1214 1214  (((
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1237 1237  * **0xA801**     **~-~->** AT+PID=1
1238 1238  
1239 1239  
1240 -
1241 -
1242 -
1243 1243  == 4.4 Set Password ==
1244 1244  
1245 1245  Feature: Set device password, max 9 digits
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1287 1287  * There is no downlink command to set to Sleep mode.
1288 1288  
1289 1289  
1290 -
1291 -
1292 -
1293 1293  == 4.7 Set system time ==
1294 1294  
1295 1295  Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
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1387 1387  * Example: 0xA301 ~/~/Same as AT+CLRDTA
1388 1388  
1389 1389  
1390 -
1391 -
1392 -
1393 1393  == 4.13 Auto Send None-ACK messages ==
1394 1394  
1395 1395  (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
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1409 1409  * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1410 1410  
1411 1411  
1412 -
1413 -
1414 -
1415 1415  = 5. Battery & How to replace =
1416 1416  
1417 1417  == 5.1 Battery Type ==
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1801 1801  [[image:image-20220615154519-3.png||height="672" width="807"]]
1802 1802  
1803 1803  
1804 -== 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? ==
1805 1805  
1806 1806  [[image:image-20220623110706-1.png]]
1807 1807  
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1865 1865  * (% style="color:red" %)**E3**(%%): External Temperature Probe
1866 1866  
1867 1867  
1868 -
1869 -
1870 -
1871 1871  = 8. Packing Info =
1872 1872  
1873 1873  
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1882 1882  * Device Weight: 120.5g
1883 1883  
1884 1884  
1885 -
1886 -
1887 -
1888 1888  = 9. Reference material =
1889 1889  
1890 1890  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1891 1891  
1892 1892  
1893 -
1894 -
1895 -
1896 1896  = 10. FCC Warning =
1897 1897  
1898 1898  This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
image-20220703111533-1.png
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