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Last modified by Xiaoling on 2023/07/18 10:12
From version 189.10
edited by Xiaoling
on 2022/08/08 16:46
Change comment: There is no comment for this version
To version 192.1
edited by Bei Jinggeng
on 2022/09/06 10:11
Change comment: Uploaded new attachment "image-20220906101145-2.png", version {1}

Summary

Details

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1 -XWiki.Xiaoling
1 +XWiki.Bei
Content
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57 57  * Built-in Temperature & Humidity sensor
58 58  * Optional External Sensors
59 59  * Tri-color LED to indicate working status
60 -* Datalog feature
60 +* Datalog feature (Max 3328 records)
61 61  
62 +
63 +
62 62  == 1.3 Specification ==
63 63  
64 64  
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83 83  * ±2°C accuracy from -55°C to +125°C
84 84  * Operating Range: -55 °C ~~ 125 °C
85 85  
88 +
89 +
86 86  = 2. Connect LHT65N to IoT Server =
87 87  
88 88  == 2.1 How does LHT65N work? ==
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272 272  * The 7th byte (EXT #): defines the external sensor model.
273 273  * 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.)
274 274  
279 +
280 +
275 275  === 2.4.1 Decoder in TTN V3 ===
276 276  
277 277  
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304 304  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
305 305  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
306 306  
313 +
314 +
307 307  === 2.4.3 Built-in Temperature ===
308 308  
309 309  
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315 315  
316 316  * Temperature:  (0xF5C6-65536)/100=-26.18℃
317 317  
326 +
327 +
318 318  === 2.4.4 Built-in Humidity ===
319 319  
320 320  
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322 322  
323 323  * Humidity:    0x025C/10=60.4%
324 324  
335 +
336 +
325 325  === 2.4.5 Ext # ===
326 326  
327 327  
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333 333  
334 334  === 2.4.6 Ext value ===
335 335  
348 +
336 336  ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
337 337  
338 338  
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478 478  * (% 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.
479 479  * (% 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)
480 480  
494 +
495 +
481 481  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
482 482  
483 483  
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589 589  There are two methods:
590 590  
591 591  1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
592 -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.
607 +1. Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will mark these records with non-ack message and store the sensor data, and it will send all messages (10s interval) after the network recovery. note: a) LHT65N will do ack check for data records sending to make sure every data arrive server. b) LHT65N will send data in CONFIRMED Mode when PNACKMD=1, but it won't re-transmit the same packet , it will just mark it as NONE-ACK and resend after network is detected.
593 593  
594 594  Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
595 595  
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1075 1075  * RED LED when external sensor is not connected
1076 1076  * For each success downlink, the PURPLE LED will blink once
1077 1077  
1093 +
1094 +
1078 1078  == 2.9 installation ==
1079 1079  
1080 1080  
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1131 1131  * Operating Range: -40 ~~ 125 °C
1132 1132  * Working voltage 2.35v ~~ 5v
1133 1133  
1151 +
1152 +
1134 1134  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1135 1135  
1136 1136  
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1200 1200  
1201 1201  * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1202 1202  
1222 +
1223 +
1203 1203  == 4.2 Set External Sensor Mode ==
1204 1204  
1205 1205  
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1223 1223  
1224 1224  * 0xA20702003c: Same as AT+SETCNT=60
1225 1225  
1247 +
1248 +
1226 1226  == 4.3 Enable/Disable uplink Temperature probe ID ==
1227 1227  
1228 1228  
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1253 1253  * **0xA800**  **~-~->** AT+PID=0
1254 1254  * **0xA801**     **~-~->** AT+PID=1
1255 1255  
1279 +
1280 +
1256 1256  == 4.4 Set Password ==
1257 1257  
1258 1258  
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1304 1304  
1305 1305  * There is no downlink command to set to Sleep mode.
1306 1306  
1332 +
1333 +
1307 1307  == 4.7 Set system time ==
1308 1308  
1309 1309  
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1412 1412  
1413 1413  * Example: 0xA301 ~/~/Same as AT+CLRDTA
1414 1414  
1442 +
1443 +
1415 1415  == 4.13 Auto Send None-ACK messages ==
1416 1416  
1417 1417  
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1432 1432  
1433 1433  * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1434 1434  
1464 +
1465 +
1435 1435  = 5. Battery & How to replace =
1436 1436  
1437 1437  == 5.1 Battery Type ==
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1904 1904  * (% style="color:red" %)**E3**(%%): External Temperature Probe
1905 1905  
1906 1906  
1907 -
1908 -
1909 1909  = 8. Packing Info =
1910 1910  
1911 1911  
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1920 1920  * Device Weight: 120.5g
1921 1921  
1922 1922  
1923 -
1924 -
1925 1925  = 9. Reference material =
1926 1926  
1927 1927  
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1928 1928  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1929 1929  
1930 1930  
1931 -
1932 -
1933 1933  = 10. FCC Warning =
1934 1934  
1935 1935  
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