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Last modified by Xiaoling on 2023/07/18 10:12
From version 228.1
edited by Bei Jinggeng
on 2023/02/01 11:15
Change comment: There is no comment for this version
To version 226.1
edited by Edwin Chen
on 2023/01/27 10:49
Change comment: There is no comment for this version

Summary

Details

Page properties
Author
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1 -XWiki.Bei
1 +XWiki.Edwin
Content
... ... @@ -58,6 +58,7 @@
58 58  * Tri-color LED to indicate working status
59 59  * Datalog feature (Max 3328 records)
60 60  
61 +
61 61  == 1.3 Specification ==
62 62  
63 63  
... ... @@ -82,6 +82,7 @@
82 82  * ±2°C accuracy from -55°C to +125°C
83 83  * Operating Range: -55 °C ~~ 125 °C
84 84  
86 +
85 85  = 2. Connect LHT65N to IoT Server =
86 86  
87 87  == 2.1 How does LHT65N work? ==
... ... @@ -233,6 +233,7 @@
233 233  * The 7th byte (EXT #): defines the external sensor model.
234 234  * The 8^^th^^ ~~ 11^^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.)
235 235  
238 +
236 236  === 2.4.1 Decoder in TTN V3 ===
237 237  
238 238  
... ... @@ -260,6 +260,7 @@
260 260  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
261 261  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
262 262  
266 +
263 263  === 2.4.3 Built-in Temperature ===
264 264  
265 265  
... ... @@ -271,6 +271,7 @@
271 271  
272 272  * Temperature:  (0xF5C6-65536)/100=-26.18℃
273 273  
278 +
274 274  === 2.4.4 Built-in Humidity ===
275 275  
276 276  
... ... @@ -278,6 +278,7 @@
278 278  
279 279  * Humidity:    0x025C/10=60.4%
280 280  
286 +
281 281  === 2.4.5 Ext # ===
282 282  
283 283  
... ... @@ -305,10 +305,6 @@
305 305  
306 306  * External temperature= (0xF54F-65536)/100=-27.37℃
307 307  
308 -F54F :  (F54F & 8000 == 1) , temp = (F54F - 65536)/100 = 27.37℃
309 -
310 -（0105 & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative）
311 -
312 312  The last 2 bytes of data are meaningless
313 313  
314 314  If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
... ... @@ -377,6 +377,7 @@
377 377  * (% 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.
378 378  * (% 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)
379 379  
382 +
380 380  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
381 381  
382 382  
... ... @@ -959,6 +959,7 @@
959 959  * RED LED when external sensor is not connected
960 960  * For each success downlink, the PURPLE LED will blink once
961 961  
965 +
962 962  == 2.9 installation ==
963 963  
964 964  
... ... @@ -1011,6 +1011,7 @@
1011 1011  * Operating Range: -40 ~~ 125 °C
1012 1012  * Working voltage 2.35v ~~ 5v
1013 1013  
1018 +
1014 1014  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1015 1015  
1016 1016  
... ... @@ -1079,6 +1079,7 @@
1079 1079  
1080 1080  * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1081 1081  
1087 +
1082 1082  == 4.2 Set External Sensor Mode ==
1083 1083  
1084 1084  
... ... @@ -1102,6 +1102,7 @@
1102 1102  
1103 1103  * 0xA20702003c: Same as AT+SETCNT=60
1104 1104  
1111 +
1105 1105  == 4.3 Enable/Disable uplink Temperature probe ID ==
1106 1106  
1107 1107  
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1132 1132  * **0xA800**  **~-~->** AT+PID=0
1133 1133  * **0xA801**     **~-~->** AT+PID=1
1134 1134  
1142 +
1135 1135  == 4.4 Set Password ==
1136 1136  
1137 1137  
... ... @@ -1181,6 +1181,7 @@
1181 1181  
1182 1182  * There is no downlink command to set to Sleep mode.
1183 1183  
1192 +
1184 1184  == 4.7 Set system time ==
1185 1185  
1186 1186  
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1284 1284  
1285 1285  * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1286 1286  
1296 +
1287 1287  == 4.13 Auto Send None-ACK messages ==
1288 1288  
1289 1289  
... ... @@ -1302,6 +1302,7 @@
1302 1302  
1303 1303  * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1304 1304  
1315 +
1305 1305  == 4.14 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm（Since firmware 1.3.0） ==
1306 1306  
1307 1307  
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1563 1563  **Downlink commands:**
1564 1564  
1565 1565  
1577 +
1566 1566  (% style="color:blue" %)**TTN:**
1567 1567  
1568 1568  [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
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1667 1667  * (% class="mark" %)**PB1: TXD**
1668 1668  * (% class="mark" %)**GND**
1669 1669  
1682 +
1670 1670  [[image:image-20220623112117-4.png||_mstalt="428350" height="459" width="343"]]
1671 1671  
1672 1672  
... ... @@ -1746,6 +1746,7 @@
1746 1746  
1747 1747  * (% style="color:red" %)**E3**(%%): External Temperature Probe
1748 1748  
1762 +
1749 1749  = 8. Packing Info =
1750 1750  
1751 1751  
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1759 1759  * Device Size:  10 x 10 x 3.5 mm
1760 1760  * Device Weight: 120.5g
1761 1761  
1776 +
1762 1762  = 9. Reference material =
1763 1763  
1764 1764  
1765 1765  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
1766 1766  
1782 +
1767 1767  = 10. FCC Warning =
1768 1768  
1769 1769