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Last modified by Xiaoling on 2023/07/18 10:12
From version 196.1
edited by Bei Jinggeng
on 2022/09/06 10:13
Change comment: Uploaded new attachment "image-20220906101320-6.png", version {1}
To version 189.11
edited by Xiaoling
on 2022/08/08 16:54
Change comment: There is no comment for this version

Summary

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1 -XWiki.Bei
1 +XWiki.Xiaoling
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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 (Max 3328 records)
60 +* Datalog feature
61 61  
62 -
63 -
64 64  == 1.3 Specification ==
65 65  
66 66  
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85 85  * ±2°C accuracy from -55°C to +125°C
86 86  * Operating Range: -55 °C ~~ 125 °C
87 87  
88 -
89 -
90 90  = 2. Connect LHT65N to IoT Server =
91 91  
92 92  == 2.1 How does LHT65N work? ==
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276 276  * The 7th byte (EXT #): defines the external sensor model.
277 277  * 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.)
278 278  
279 -
280 -
281 281  === 2.4.1 Decoder in TTN V3 ===
282 282  
283 283  
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310 310  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
311 311  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
312 312  
313 -
314 -
315 315  === 2.4.3 Built-in Temperature ===
316 316  
317 317  
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323 323  
324 324  * Temperature:  (0xF5C6-65536)/100=-26.18℃
325 325  
326 -
327 -
328 328  === 2.4.4 Built-in Humidity ===
329 329  
330 330  
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332 332  
333 333  * Humidity:    0x025C/10=60.4%
334 334  
335 -
336 -
337 337  === 2.4.5 Ext # ===
338 338  
339 339  
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345 345  
346 346  === 2.4.6 Ext value ===
347 347  
348 -
349 349  ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
350 350  
351 351  
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491 491  * (% 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.
492 492  * (% 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)
493 493  
494 -
495 -
496 496  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
497 497  
498 498  
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604 604  There are two methods:
605 605  
606 606  1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
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.
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.
608 608  
609 609  Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
610 610  
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1090 1090  * RED LED when external sensor is not connected
1091 1091  * For each success downlink, the PURPLE LED will blink once
1092 1092  
1093 -
1094 -
1095 1095  == 2.9 installation ==
1096 1096  
1097 1097  
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1148 1148  * Operating Range: -40 ~~ 125 °C
1149 1149  * Working voltage 2.35v ~~ 5v
1150 1150  
1151 -
1152 -
1153 1153  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1154 1154  
1155 1155  
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1219 1219  
1220 1220  * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1221 1221  
1222 -
1223 -
1224 1224  == 4.2 Set External Sensor Mode ==
1225 1225  
1226 1226  
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1244 1244  
1245 1245  * 0xA20702003c: Same as AT+SETCNT=60
1246 1246  
1247 -
1248 -
1249 1249  == 4.3 Enable/Disable uplink Temperature probe ID ==
1250 1250  
1251 1251  
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1276 1276  * **0xA800**  **~-~->** AT+PID=0
1277 1277  * **0xA801**     **~-~->** AT+PID=1
1278 1278  
1279 -
1280 -
1281 1281  == 4.4 Set Password ==
1282 1282  
1283 1283  
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1329 1329  
1330 1330  * There is no downlink command to set to Sleep mode.
1331 1331  
1332 -
1333 -
1334 1334  == 4.7 Set system time ==
1335 1335  
1336 1336  
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1439 1439  
1440 1440  * Example: 0xA301 ~/~/Same as AT+CLRDTA
1441 1441  
1442 -
1443 -
1444 1444  == 4.13 Auto Send None-ACK messages ==
1445 1445  
1446 1446  
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1461 1461  
1462 1462  * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1463 1463  
1464 -
1465 -
1466 1466  = 5. Battery & How to replace =
1467 1467  
1468 1468  == 5.1 Battery Type ==
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1935 1935  * (% style="color:red" %)**E3**(%%): External Temperature Probe
1936 1936  
1937 1937  
1907 +
1908 +
1938 1938  = 8. Packing Info =
1939 1939  
1940 1940  
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1949 1949  * Device Weight: 120.5g
1950 1950  
1951 1951  
1923 +
1924 +
1952 1952  = 9. Reference material =
1953 1953  
1954 1954  
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1955 1955  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1956 1956  
1957 1957  
1931 +
1932 +
1958 1958  = 10. FCC Warning =
1959 1959  
1960 1960  
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