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Last modified by Xiaoling on 2023/07/18 10:12
From version 170.30
edited by Xiaoling
on 2022/06/22 11:22
Change comment: There is no comment for this version
To version 189.8
edited by Xiaoling
on 2022/08/08 16:22
Change comment: There is no comment for this version

Summary

Details

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Content
... ... @@ -1,5 +1,5 @@
1 1  (% style="text-align:center" %)
2 -[[image:image-20220613162008-1.png||_mstalt="428142" height="579" width="379"]]
2 +[[image:image-20220613162008-1.png||_mstalt="428142" height="510" width="334"]]
3 3  
4 4  
5 5  
... ... @@ -46,6 +46,7 @@
46 46  
47 47  == 1.2 Features ==
48 48  
49 +
49 49  * Wall mountable
50 50  * LoRaWAN v1.0.3 Class A protocol
51 51  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
... ... @@ -59,6 +59,7 @@
59 59  * Datalog feature
60 60  
61 61  
63 +
62 62  == 1.3 Specification ==
63 63  
64 64  
... ... @@ -69,6 +69,8 @@
69 69  * Long Term Drift: < 0.02 °C/yr
70 70  * Operating Range: -40 ~~ 85 °C
71 71  
74 +
75 +
72 72  **Built-in Humidity Sensor:**
73 73  
74 74  * Resolution: 0.04 %RH
... ... @@ -76,6 +76,8 @@
76 76  * Long Term Drift: < 0.02 °C/yr
77 77  * Operating Range: 0 ~~ 96 %RH
78 78  
83 +
84 +
79 79  **External Temperature Sensor:**
80 80  
81 81  * Resolution: 0.0625 °C
... ... @@ -84,10 +84,12 @@
84 84  * Operating Range: -55 °C ~~ 125 °C
85 85  
86 86  
93 +
87 87  = 2. Connect LHT65N to IoT Server =
88 88  
89 89  == 2.1 How does LHT65N work? ==
90 90  
98 +
91 91  (((
92 92  LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
93 93  )))
... ... @@ -97,8 +97,10 @@
97 97  )))
98 98  
99 99  
108 +
100 100  == 2.2 How to Activate LHT65N? ==
101 101  
111 +
102 102  (((
103 103  The LHT65N has two working modes:
104 104  )))
... ... @@ -123,6 +123,7 @@
123 123  
124 124  == 2.3 Example to join LoRaWAN network ==
125 125  
136 +
126 126  (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
127 127  This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure.
128 128  
... ... @@ -138,6 +138,7 @@
138 138  
139 139  === 2.3.1 Step 1: Create Device n TTN ===
140 140  
152 +
141 141  (((
142 142  Create a device in TTN V3 with the OTAA keys from LHT65N.
143 143  )))
... ... @@ -162,9 +162,10 @@
162 162  [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
163 163  
164 164  
165 -Note: LHT65N use same payload as LHT65.
166 166  
178 +(% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
167 167  
180 +
168 168  [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
169 169  
170 170  
... ... @@ -178,6 +178,7 @@
178 178  
179 179  === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
180 180  
194 +
181 181  (((
182 182  Use ACT button to activate LHT65N and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
183 183  )))
... ... @@ -189,6 +189,7 @@
189 189  
190 190  == 2.4 Uplink Payload ==
191 191  
206 +
192 192  (((
193 193  The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% _mstvisible="3" style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
194 194  )))
... ... @@ -263,14 +263,13 @@
263 263  
264 264  * The First 6 bytes: has fix meanings for every LHT65N.
265 265  * The 7th byte (EXT #): defines the external sensor model.
266 -* 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.)
281 +* 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.)
267 267  
268 268  
269 269  
270 -
271 -
272 272  === 2.4.1 Decoder in TTN V3 ===
273 273  
287 +
274 274  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.
275 275  
276 276  Below is the position to put the decoder and LHT65N decoder can be download from here:
... ... @@ -286,6 +286,7 @@
286 286  
287 287  === 2.4.2 BAT-Battery Info ===
288 288  
303 +
289 289  These two bytes of BAT include the battery state and the actually voltage
290 290  
291 291  [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
... ... @@ -301,10 +301,9 @@
301 301  
302 302  
303 303  
304 -
305 -
306 306  === 2.4.3 Built-in Temperature ===
307 307  
321 +
308 308  [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
309 309  
310 310  * Temperature:  0x0ABB/100=27.47℃
... ... @@ -315,10 +315,9 @@
315 315  
316 316  
317 317  
318 -
319 -
320 320  === 2.4.4 Built-in Humidity ===
321 321  
334 +
322 322  [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
323 323  
324 324  * Humidity:    0x025C/10=60.4%
... ... @@ -325,10 +325,9 @@
325 325  
326 326  
327 327  
328 -
329 -
330 330  === 2.4.5 Ext # ===
331 331  
343 +
332 332  Bytes for External Sensor:
333 333  
334 334  [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
... ... @@ -360,6 +360,7 @@
360 360  
361 361  ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
362 362  
375 +
363 363  (((
364 364  Timestamp mode is designed for LHT65N with E3 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
365 365  )))
... ... @@ -473,18 +473,19 @@
473 473  
474 474  * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
475 475  
476 -[[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
489 +(% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
490 +|(% style="width:60px" %)**Bits**|(% style="width:90px" %)**7**|(% style="width:100px" %)**6**|(% style="width:90px" %)**5**|(% style="width:100px" %)**4**|(% style="width:60px" %)**[3:0]**
491 +|(% style="width:96px" %)**Status&Ext**|(% style="width:124px" %)None-ACK Flag|(% style="width:146px" %)Poll Message FLAG|(% style="width:109px" %)Sync time OK|(% style="width:143px" %)Unix Time Request|(% style="width:106px" %)Ext: 0b(1001)
477 477  
478 -* Poll Message Flag:  1: This message is a poll message reply, 0: means this is a normal uplink.
479 -* Sync time OK:  1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
480 -* 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)
493 +* (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
494 +* (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
495 +* (% style="color:blue" %)**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)
481 481  
482 482  
483 483  
484 -
485 -
486 486  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
487 487  
501 +
488 488  In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
489 489  
490 490  be used to power the external ADC sensor; user can control the power on time for this
... ... @@ -493,10 +493,46 @@
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  
510 +For example:
496 496  
512 +AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
497 497  
514 +
515 +Or use **downlink command A2** to set the same.
516 +
517 +The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
518 +
519 +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.
520 +
521 +[[image:image-20220628150112-1.png||height="241" width="285"]]
522 +
523 +
524 +When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
525 +
526 +[[image:image-20220628150714-4.png]]
527 +
528 +
529 +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.
530 +
531 +1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
532 +
533 +[[image:image-20220628151005-5.png]]
534 +
535 +
536 +2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
537 +
538 +[[image:image-20220628151056-6.png]]
539 +
540 +
541 +3) Within range
542 +
543 +[[image:image-20220628151143-7.png]]
544 +
545 +
546 +
498 498  == 2.5 Show data on Datacake ==
499 499  
549 +
500 500  (((
501 501  Datacake IoT platform provides a human-friendly interface to show the sensor data, once we have sensor data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
502 502  )))
... ... @@ -544,6 +544,7 @@
544 544  
545 545  == 2.6 Datalog Feature ==
546 546  
597 +
547 547  (((
548 548  Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, LHT65N will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65N.
549 549  )))
... ... @@ -552,15 +552,17 @@
552 552  
553 553  === 2.6.1 Ways to get datalog via LoRaWAN ===
554 554  
606 +
555 555  There are two methods:
556 556  
557 -1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range.
558 -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.
609 +1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
610 +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.
559 559  
612 +Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
560 560  
614 +[[image:image-20220703111700-2.png||height="381" width="1119"]]
561 561  
562 562  
563 -
564 564  === 2.6.2 Unix TimeStamp ===
565 565  
566 566  
... ... @@ -583,6 +583,7 @@
583 583  
584 584  === 2.6.3 Set Device Time ===
585 585  
639 +
586 586  (((
587 587  There are two ways to set device's time:
588 588  )))
... ... @@ -600,7 +600,7 @@
600 600  )))
601 601  
602 602  (((
603 -(% style="color:red" %)Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn’t support. If server doesn’t support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.
657 +(% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**
604 604  )))
605 605  
606 606  (((
... ... @@ -619,6 +619,7 @@
619 619  
620 620  === 2.6.4 Poll sensor value ===
621 621  
676 +
622 622  User can poll sensor value based on timestamps from the server. Below is the downlink command.
623 623  
624 624  [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
... ... @@ -636,6 +636,7 @@
636 636  
637 637  === 2.6.5 Datalog Uplink payload ===
638 638  
694 +
639 639  (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
640 640  The Datalog poll reply uplink will use below payload format.
641 641  
... ... @@ -642,6 +642,9 @@
642 642  (% _mstvisible="1" %)
643 643  (((
644 644  (% _mstvisible="2" %)
701 +
702 +
703 +(% _mstvisible="2" %)
645 645  (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
646 646  )))
647 647  
... ... @@ -769,6 +769,7 @@
769 769  )))
770 770  )))
771 771  
831 +
772 772  (% _mstvisible="1" %)
773 773  (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
774 774  
... ... @@ -904,7 +904,7 @@
904 904  (% _mstvisible="1" %)
905 905  (((
906 906  (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
907 - Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
967 + Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
908 908  )))
909 909  
910 910  (% _mstvisible="1" %)
... ... @@ -966,28 +966,56 @@
966 966  
967 967  == 2.7 Alarm Mode ==
968 968  
1029 +(((
969 969  when the device is in alarm mode, it checks the built-in sensor temperature for a short time. if the temperature exceeds the preconfigured range, it sends an uplink immediately.
1031 +)))
970 970  
1033 +(((
971 971  (% style="color:red" %)Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.
1035 +)))
972 972  
1037 +(((
973 973  **AT COMMAND FOR ALARM MODE:**
1039 +)))
974 974  
975 975  (% _mstvisible="1" class="box infomessage" %)
976 976  (((
1043 +(((
977 977  **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
1045 +)))
978 978  
1047 +(((
979 979  **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1049 +)))
980 980  
1051 +(((
981 981  **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1053 +)))
982 982  
1055 +(((
983 983  **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1057 +)))
984 984  
1059 +(((
985 985  **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
986 986  )))
1062 +)))
987 987  
1064 +(% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
988 988  
1066 +Total bytes: 8 bytes
989 989  
1068 +**Example:**AA0100010001003C
990 990  
1070 +WMOD=01
1071 +
1072 +CITEMP=0001
1073 +
1074 +TEMPlow=0001
1075 +
1076 +TEMPhigh=003C
1077 +
1078 +
991 991  == 2.8 LED Indicator ==
992 992  
993 993  The LHT65 has a triple color LED which for easy showing different stage .
... ... @@ -997,10 +997,11 @@
997 997  In a normal working state:
998 998  
999 999  * For each uplink, the BLUE LED or RED LED will blink once.
1000 - BLUE LED when external sensor is connected.
1088 +BLUE LED when external sensor is connected.
1001 1001  * RED LED when external sensor is not connected
1002 1002  * For each success downlink, the PURPLE LED will blink once
1003 1003  
1092 +
1004 1004  == 2.9 installation ==
1005 1005  
1006 1006  (% _mstvisible="1" %)
... ... @@ -1014,8 +1014,24 @@
1014 1014  
1015 1015  [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1016 1016  
1017 -1m long breakout cable for LHT65N
1106 +**1m long breakout cable for LHT65N. Features:**
1018 1018  
1108 +* (((
1109 +Use for AT Command， works for both LHT52/LHT65N
1110 +)))
1111 +* (((
1112 +Update firmware for LHT65N, works for both LHT52/LHT65N
1113 +)))
1114 +* (((
1115 +Supports ADC mode to monitor external ADC
1116 +)))
1117 +* (((
1118 +Supports Interrupt mode
1119 +)))
1120 +* (((
1121 +Exposed All pins from the LHT65N Type-C connector.
1122 +)))
1123 +
1019 1019  [[image:image-20220619092421-3.png||height="371" width="529"]]
1020 1020  
1021 1021  
... ... @@ -1035,28 +1035,51 @@
1035 1035  * Operating Range: -40 ~~ 125 °C
1036 1036  * Working voltage 2.35v ~~ 5v
1037 1037  
1143 +
1038 1038  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1039 1039  
1146 +(((
1040 1040  Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1148 +)))
1041 1041  
1042 -* AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1150 +* (((
1151 +AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1152 +)))
1043 1043  
1044 -* LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1154 +* (((
1155 +LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1156 +)))
1045 1045  
1158 +(((
1046 1046  There are two kinds of commands to configure LHT65N, they are:
1160 +)))
1047 1047  
1048 -* (% style="color:#4f81bd" %)**General Commands**.
1162 +* (((
1163 +(% style="color:#4f81bd" %)**General Commands**.
1164 +)))
1049 1049  
1166 +(((
1050 1050  These commands are to configure:
1168 +)))
1051 1051  
1052 -1. General system settings like: uplink interval.
1053 -1. LoRaWAN protocol & radio-related commands.
1170 +1. (((
1171 +General system settings like: uplink interval.
1172 +)))
1173 +1. (((
1174 +LoRaWAN protocol & radio-related commands.
1175 +)))
1054 1054  
1177 +(((
1055 1055  They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~*~*). These commands can be found on the wiki: [[End Device Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
1179 +)))
1056 1056  
1057 -* (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1181 +* (((
1182 +(% style="color:#4f81bd" %)**Commands special design for LHT65N**
1183 +)))
1058 1058  
1185 +(((
1059 1059  These commands are only valid for LHT65N, as below:
1187 +)))
1060 1060  
1061 1061  
1062 1062  == 4.1 Set Transmit Interval Time ==
... ... @@ -1078,6 +1078,7 @@
1078 1078  
1079 1079  * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1080 1080  
1209 +
1081 1081  == 4.2 Set External Sensor Mode ==
1082 1082  
1083 1083  Feature: Change External Sensor Mode.
... ... @@ -1099,6 +1099,7 @@
1099 1099  
1100 1100  * 0xA20702003c: Same as AT+SETCNT=60
1101 1101  
1231 +
1102 1102  == 4.3 Enable/Disable uplink Temperature probe ID ==
1103 1103  
1104 1104  (((
... ... @@ -1126,6 +1126,7 @@
1126 1126  * **0xA800**  **~-~->** AT+PID=0
1127 1127  * **0xA801**     **~-~->** AT+PID=1
1128 1128  
1259 +
1129 1129  == 4.4 Set Password ==
1130 1130  
1131 1131  Feature: Set device password, max 9 digits
... ... @@ -1172,6 +1172,7 @@
1172 1172  
1173 1173  * There is no downlink command to set to Sleep mode.
1174 1174  
1306 +
1175 1175  == 4.7 Set system time ==
1176 1176  
1177 1177  Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
... ... @@ -1268,6 +1268,7 @@
1268 1268  
1269 1269  * Example: 0xA301 ~/~/Same as AT+CLRDTA
1270 1270  
1403 +
1271 1271  == 4.13 Auto Send None-ACK messages ==
1272 1272  
1273 1273  (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
... ... @@ -1286,6 +1286,7 @@
1286 1286  
1287 1287  * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1288 1288  
1422 +
1289 1289  = 5. Battery & How to replace =
1290 1290  
1291 1291  == 5.1 Battery Type ==
... ... @@ -1345,16 +1345,11 @@
1345 1345  
1346 1346  (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1347 1347  
1348 -(% _msthash="506062" _msttexthash="1187732" %)
1349 -**✓ (% style="background-color:yellow" %)USB to TTL GND <~-~->GND(%%)**
1482 +* (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1483 +* (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1484 +* (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1485 +* (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1350 1350  
1351 -(% _msthash="506063" _msttexthash="1158313" %)**✓  **(% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1352 -
1353 -(% _msthash="506064" _msttexthash="1175629" %)**✓  **(% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1354 -
1355 -(% _msthash="506065" _msttexthash="1164696" %)**✓  **(% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1356 -
1357 -
1358 1358  (((
1359 1359  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.
1360 1360  )))
... ... @@ -1663,7 +1663,59 @@
1663 1663  Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1664 1664  
1665 1665  
1795 +== 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1666 1666  
1797 +[[image:image-20220623110706-1.png]]
1798 +
1799 +
1800 +[[image:image-20220623112117-4.png||height="459" width="343"]]
1801 +
1802 +(((
1803 +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.
1804 +)))
1805 +
1806 +
1807 +Input password and ATZ to activate LHT65N,As shown below:
1808 +
1809 +[[image:image-20220615154519-3.png||height="672" width="807"]]
1810 +
1811 +
1812 +== 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1813 +
1814 +[[image:image-20220623110706-1.png]]
1815 +
1816 +(% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1817 +
1818 +[[image:image-20220615170542-5.png]]
1819 +
1820 +
1821 +(% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1822 +
1823 +(% _msthash="506146" _msttexthash="52173160" %)
1824 +First connect the four lines；
1825 +
1826 +(% _msthash="506146" _msttexthash="52173160" %)
1827 +[[image:image-20220623113959-5.png||height="528" width="397"]]
1828 +
1829 +(% _msthash="506146" _msttexthash="52173160" %)
1830 +Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1831 +
1832 +(% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1833 +
1834 +[[image:image-20220615171334-6.png]]
1835 +
1836 +
1837 +Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1838 +
1839 +
1840 +When this interface appears, it indicates that the download has been completed.
1841 +
1842 +[[image:image-20220620160723-8.png]]
1843 +
1844 +
1845 +Finally,restart reset device again
1846 +
1847 +
1667 1667  = 7. Order Info =
1668 1668  
1669 1669  
... ... @@ -1691,6 +1691,7 @@
1691 1691  
1692 1692  * (% style="color:red" %)**E3**(%%): External Temperature Probe
1693 1693  
1875 +
1694 1694  = 8. Packing Info =
1695 1695  
1696 1696  
... ... @@ -1704,10 +1704,12 @@
1704 1704  * Device Size:  10 x 10 x 3.5 cm
1705 1705  * Device Weight: 120.5g
1706 1706  
1889 +
1707 1707  = 9. Reference material =
1708 1708  
1709 1709  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1710 1710  
1894 +
1711 1711  = 10. FCC Warning =
1712 1712  
1713 1713  This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
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