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

Summary

Details

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59 59  * Datalog feature
60 60  
61 61  
62 +
63 +
64 +
62 62  == 1.3 Specification ==
63 63  
64 64  
... ... @@ -84,6 +84,9 @@
84 84  * Operating Range: -55 °C ~~ 125 °C
85 85  
86 86  
90 +
91 +
92 +
87 87  = 2. Connect LHT65N to IoT Server =
88 88  
89 89  == 2.1 How does LHT65N work? ==
... ... @@ -493,8 +493,43 @@
493 493  
494 494  AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
495 495  
502 +For example:
496 496  
504 +AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
497 497  
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 +
498 498  == 2.5 Show data on Datacake ==
499 499  
500 500  (((
... ... @@ -1033,8 +1033,24 @@
1033 1033  
1034 1034  [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1035 1035  
1036 -1m long breakout cable for LHT65N
1077 +**1m long breakout cable for LHT65N. Features:**
1037 1037  
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 +
1038 1038  [[image:image-20220619092421-3.png||height="371" width="529"]]
1039 1039  
1040 1040  
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1419 1419  * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1420 1420  * (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1421 1421  
1422 -
1423 1423  (((
1424 1424  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.
1425 1425  )))
... ... @@ -1728,7 +1728,59 @@
1728 1728  Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1729 1729  
1730 1730  
1787 +== 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1731 1731  
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 +
1732 1732  = 7. Order Info =
1733 1733  
1734 1734  
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