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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 176.1
edited by Bei Jinggeng
on 2022/06/23 11:43
Change comment: There is no comment for this version

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60 60  
61 61  
62 62  
63 +
63 63  == 1.3 Specification ==
64 64  
65 65  
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86 86  
87 87  
88 88  
90 +
89 89  = 2. Connect LHT65N to IoT Server =
90 90  
91 91  == 2.1 How does LHT65N work? ==
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485 485  
486 486  AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
487 487  
488 -For example:
489 489  
490 -AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
491 491  
492 -
493 -Or use **downlink command A2** to set the same.
494 -
495 -The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
496 -
497 -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.
498 -
499 -[[image:image-20220628150112-1.png||height="241" width="285"]]
500 -
501 -
502 -When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
503 -
504 -[[image:image-20220628150714-4.png]]
505 -
506 -
507 -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.
508 -
509 -1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
510 -
511 -[[image:image-20220628151005-5.png]]
512 -
513 -
514 -2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
515 -
516 -[[image:image-20220628151056-6.png]]
517 -
518 -
519 -3) Within range
520 -
521 -[[image:image-20220628151143-7.png]]
522 -
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.
551 +1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range.
552 +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)
588 588  
589 -[[image:image-20220703111700-2.png||height="381" width="1119"]]
590 590  
591 -
592 592  === 2.6.2 Unix TimeStamp ===
593 593  
594 594  
... ... @@ -1029,21 +1029,8 @@
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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1072 1072  
1073 1073  [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1074 1074  
1075 -**1m long breakout cable for LHT65N. Features:**
1026 +1m long breakout cable for LHT65N
1076 1076  
1077 -* (((
1078 -Use for AT Command， works for both LHT52/LHT65N
1079 -)))
1080 -* (((
1081 -Update firmware for LHT65N, works for both LHT52/LHT65N
1082 -)))
1083 -* (((
1084 -Supports ADC mode to monitor external ADC
1085 -)))
1086 -* (((
1087 -Supports Interrupt mode
1088 -)))
1089 -* (((
1090 -Exposed All pins from the LHT65N Type-C connector.
1091 -)))
1092 -
1093 1093  [[image:image-20220619092421-3.png||height="371" width="529"]]
1094 1094  
1095 1095  
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1785 1785  [[image:image-20220615154519-3.png||height="672" width="807"]]
1786 1786  
1787 1787  
1788 -== 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? ==
1789 1789  
1790 1790  [[image:image-20220623110706-1.png]]
1791 1791  
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