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Last modified by Xiaoling on 2023/07/18 10:12
From version 176.1
edited by Bei Jinggeng
on 2022/06/23 11:43
Change comment: There is no comment for this version
To version 189.1
edited by Bei Jinggeng
on 2022/07/06 13:48
Change comment: There is no comment for this version

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60 60  
61 61  
62 62  
63 -
64 64  == 1.3 Specification ==
65 65  
66 66  
... ... @@ -87,7 +87,6 @@
87 87  
88 88  
89 89  
90 -
91 91  = 2. Connect LHT65N to IoT Server =
92 92  
93 93  == 2.1 How does LHT65N work? ==
... ... @@ -487,8 +487,43 @@
487 487  
488 488  AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
489 489  
488 +For example:
490 490  
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 +
492 492  == 2.5 Show data on Datacake ==
493 493  
494 494  (((
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548 548  
549 549  There are two methods:
550 550  
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.
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.
553 553  
587 +Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
554 554  
589 +[[image:image-20220703111700-2.png||height="381" width="1119"]]
555 555  
591 +
556 556  === 2.6.2 Unix TimeStamp ===
557 557  
558 558  
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993 993  )))
994 994  )))
995 995  
1032 +(% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
996 996  
1034 +Total bytes: 8 bytes
997 997  
1036 +**Example:**AA0100010001003C
1037 +
1038 +WMOD=01
1039 +
1040 +CITEMP=0001
1041 +
1042 +TEMPlow=0001
1043 +
1044 +TEMPhigh=003C
1045 +
1046 +
998 998  == 2.8 LED Indicator ==
999 999  
1000 1000  The LHT65 has a triple color LED which for easy showing different stage .
... ... @@ -1023,8 +1023,24 @@
1023 1023  
1024 1024  [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1025 1025  
1026 -1m long breakout cable for LHT65N
1075 +**1m long breakout cable for LHT65N. Features:**
1027 1027  
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 +
1028 1028  [[image:image-20220619092421-3.png||height="371" width="529"]]
1029 1029  
1030 1030  
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1720 1720  [[image:image-20220615154519-3.png||height="672" width="807"]]
1721 1721  
1722 1722  
1723 -== 6.6 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1788 +== 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1724 1724  
1725 1725  [[image:image-20220623110706-1.png]]
1726 1726  
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