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Last modified by Xiaoling on 2023/07/18 10:12
From version 185.4
edited by Xiaoling
on 2022/06/29 14:02
Change comment: There is no comment for this version
To version 170.34
edited by Xiaoling
on 2022/06/22 11:29
Change comment: There is no comment for this version

Summary

Details

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Content
... ... @@ -59,9 +59,6 @@
59 59  * Datalog feature
60 60  
61 61  
62 -
63 -
64 -
65 65  == 1.3 Specification ==
66 66  
67 67  
... ... @@ -87,9 +87,6 @@
87 87  * Operating Range: -55 °C ~~ 125 °C
88 88  
89 89  
90 -
91 -
92 -
93 93  = 2. Connect LHT65N to IoT Server =
94 94  
95 95  == 2.1 How does LHT65N work? ==
... ... @@ -499,43 +499,8 @@
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  (((
... ... @@ -1074,24 +1074,8 @@
1074 1074  
1075 1075  [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1076 1076  
1077 -**1m long breakout cable for LHT65N. Features:**
1036 +1m long breakout cable for LHT65N
1078 1078  
1079 -* (((
1080 -Use for AT Command， works for both LHT52/LHT65N
1081 -)))
1082 -* (((
1083 -Update firmware for LHT65N, works for both LHT52/LHT65N
1084 -)))
1085 -* (((
1086 -Supports ADC mode to monitor external ADC
1087 -)))
1088 -* (((
1089 -Supports Interrupt mode
1090 -)))
1091 -* (((
1092 -Exposed All pins from the LHT65N Type-C connector.
1093 -)))
1094 -
1095 1095  [[image:image-20220619092421-3.png||height="371" width="529"]]
1096 1096  
1097 1097  
... ... @@ -1476,6 +1476,7 @@
1476 1476  * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1477 1477  * (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1478 1478  
1422 +
1479 1479  (((
1480 1480  In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LHT65N. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**) (%%)to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.
1481 1481  )))
... ... @@ -1784,59 +1784,7 @@
1784 1784  Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1785 1785  
1786 1786  
1787 -== 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1788 1788  
1789 -[[image:image-20220623110706-1.png]]
1790 -
1791 -
1792 -[[image:image-20220623112117-4.png||height="459" width="343"]]
1793 -
1794 -(((
1795 -In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600** (%%)to access to access serial console for LHT65N. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**(% style="color:red" %))(%%) to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.
1796 -)))
1797 -
1798 -
1799 -Input password and ATZ to activate LHT65N,As shown below:
1800 -
1801 -[[image:image-20220615154519-3.png||height="672" width="807"]]
1802 -
1803 -
1804 -== 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1805 -
1806 -[[image:image-20220623110706-1.png]]
1807 -
1808 -(% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1809 -
1810 -[[image:image-20220615170542-5.png]]
1811 -
1812 -
1813 -(% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1814 -
1815 -(% _msthash="506146" _msttexthash="52173160" %)
1816 -First connect the four lines；
1817 -
1818 -(% _msthash="506146" _msttexthash="52173160" %)
1819 -[[image:image-20220623113959-5.png||height="528" width="397"]]
1820 -
1821 -(% _msthash="506146" _msttexthash="52173160" %)
1822 -Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1823 -
1824 -(% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1825 -
1826 -[[image:image-20220615171334-6.png]]
1827 -
1828 -
1829 -Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1830 -
1831 -
1832 -When this interface appears, it indicates that the download has been completed.
1833 -
1834 -[[image:image-20220620160723-8.png]]
1835 -
1836 -
1837 -Finally,restart reset device again
1838 -
1839 -
1840 1840  = 7. Order Info =
1841 1841  
1842 1842  
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