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Version 260.2 by Xiaoling on 2023/07/17 15:21
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1 (% style="text-align:center" %)
2 [[image:image-20230717152014-10.png||height="575" width="339"]]
3
4
5
6 **Table of Contents:**
7
8 {{toc/}}
9
10
11
12
13
14 = 1. Introduction =
15
16 == 1.1 What is LHT65N LoRaWAN (% style="display:none" %) (%%)Temperature & Humidity Sensor ==
17
18
19 (((
20 The Dragino LHT65N (% style="display:none" %) (%%)Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% style="color:#4f81bd" %)**Temperature Sensor.**
21 )))
22
23 (((
24 The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
25 )))
26
27 (((
28 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
29 )))
30
31 (((
32 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
33 )))
34
35 (((
36 LHT65N supports (% style="color:#4f81bd" %)**Datalog Feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
37 )))
38
39 (((
40 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
41 )))
42
43
44 == 1.2 Features ==
45
46
47 * LoRaWAN v1.0.3 Class A protocol
48 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
49 * AT Commands to change parameters
50 * Remote configure parameters via LoRaWAN Downlink
51 * Firmware upgradeable via program port
52 * Built-in 2400mAh battery for up to 10 years of use.
53 * Built-in Temperature & Humidity sensor
54 * Optional External Sensors
55 * Tri-color LED to indicate working status
56 * Datalog feature (Max 3328 records)
57
58
59 == 1.3 Specification ==
60
61
62 (% style="color:#037691" %)**Built-in Temperature Sensor:**
63
64 * Resolution: 0.01 °C
65 * Accuracy Tolerance : Typ ±0.3 °C
66 * Long Term Drift: < 0.02 °C/yr
67 * Operating Range: -40 ~~ 85 °C
68
69 (% style="color:#037691" %)**Built-in Humidity Sensor:**
70
71 * Resolution: 0.04 %RH
72 * Accuracy Tolerance : Typ ±3 %RH
73 * Long Term Drift: < 0.02 °C/yr
74 * Operating Range: 0 ~~ 96 %RH
75
76 (% style="color:#037691" %)**External Temperature Sensor:**
77
78 * Resolution: 0.0625 °C
79 * ±0.5°C accuracy from -10°C to +85°C
80 * ±2°C accuracy from -55°C to +125°C
81 * Operating Range: -55 °C ~~ 125 °C
82
83
84 = 2. Connect LHT65N to IoT Server =
85
86 == 2.1 How does LHT65N work? ==
87
88
89 (((
90 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.
91 )))
92
93 (((
94 If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
95 )))
96
97
98 == 2.2 How to Activate LHT65N? ==
99
100
101 (((
102 The LHT65N has two working modes:
103 )))
104
105 * (((
106 (% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N doesn't have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
107 )))
108 * (((
109 (% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65N will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
110 )))
111
112 (((
113 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
114 )))
115
116
117 [[image:image-20230717144740-2.png||height="391" width="267"]]
118
119 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
120 |=(% style="width: 167px;background-color:#D9E2F3;color:#0070C0" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 225px;background-color:#D9E2F3;color:#0070C0" %)**Action**
121 |(% style="background-color:#f2f2f2; width:167px" %)Pressing ACT between 1s < time < 3s|(% style="background-color:#f2f2f2; width:117px" %)Test uplink status|(% style="background-color:#f2f2f2; width:225px" %)(((
122 If LHT65N is already Joined to rhe LoRaWAN network, LHT65N will send an uplink packet, if LHT65N has external sensor connected,(% style="color:blue" %)**Blue led** (%%)will blink once. If LHT65N has not external sensor, (% style="color:red" %)**Red led**(%%) will blink once.
123 )))
124 |(% style="background-color:#f2f2f2; width:167px" %)Pressing ACT for more than 3s|(% style="background-color:#f2f2f2; width:117px" %)Active Device|(% style="background-color:#f2f2f2; width:225px" %)(((
125 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network.
126 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after join in network.
127 )))
128 |(% style="background-color:#f2f2f2; width:167px" %)Fast press ACT 5 times.|(% style="background-color:#f2f2f2; width:117px" %)Deactivate Device|(% style="background-color:#f2f2f2; width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means LHT65N is in Deep Sleep Mode.
129
130
131 == 2.3 Example to join LoRaWAN network ==
132
133
134 (% class="wikigeneratedid" %)
135 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.
136
137
138 (% class="wikigeneratedid" %)
139 [[image:image-20220522232442-1.png||_mstalt="427830" height="387" width="648"]]
140
141
142 (((
143 Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network||_mstvisible="2"]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
144 )))
145
146
147 === 2.3.1 Step 1: Create Device n TTN ===
148
149
150 (((
151 Create a device in TTN V3 with the OTAA keys from LHT65N.
152 )))
153
154 (((
155 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
156 )))
157
158 [[image:image-20230426083319-1.png||height="258" width="556"]]
159
160 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
161
162 Add APP EUI in the application.
163
164
165 [[image:image-20220522232916-3.png||_mstalt="430495"]]
166
167
168 [[image:image-20220522232932-4.png||_mstalt="430157"]]
169
170
171 [[image:image-20220522232954-5.png||_mstalt="431847"]]
172
173
174
175 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
176
177
178 [[image:image-20220522233026-6.png||_mstalt="429403"]]
179
180
181 Input APP EUI,  APP KEY and DEV EUI:
182
183
184 [[image:image-20220522233118-7.png||_mstalt="430430"]]
185
186
187 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
188
189
190 (((
191 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.
192 )))
193
194 [[image:image-20220522233300-8.png||_mstalt="428389" height="219" width="722"]]
195
196
197 == 2.4 Uplink Payload (Fport~=2) ==
198
199
200 (((
201 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
202 )))
203
204 (((
205 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
206 )))
207
208 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:390px" %)
209 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
210 **Size(bytes)**
211 )))|=(% style="width: 30px;background-color:#D9E2F3;color:#0070C0" %)(((
212 **2**
213 )))|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)(((
214 **2**
215 )))|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)(((
216 **2**
217 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
218 **1**
219 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
220 **4**
221 )))
222 |(% style="width:97px" %)(((
223 **Value**
224 )))|(% style="width:39px" %)(((
225 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
226 )))|(% style="width:100px" %)(((
227 (((
228 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
229 )))
230 )))|(% style="width:77px" %)(((
231 (((
232 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
233 )))
234 )))|(% style="width:47px" %)(((
235 [[Ext>>||anchor="H2.4.5Ext23"]] #
236 )))|(% style="width:51px" %)(((
237 [[Ext value>>||anchor="H2.4.6Extvalue"]]
238 )))
239
240 * The First 6 bytes: has fix meanings for every LHT65N.
241
242 * The 7th byte (EXT #): defines the external sensor model.
243
244 * 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.)
245
246
247 === 2.4.1 Decoder in TTN V3 ===
248
249
250 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.
251
252 Below is the position to put the decoder and LHT65N decoder can be download from here: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
253
254
255 [[image:image-20220522234118-10.png||_mstalt="451464" height="353" width="729"]]
256
257
258 === 2.4.2 BAT-Battery Info ===
259
260
261 These two bytes of BAT include the battery state and the actually voltage.
262
263 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:477px" %)
264 |=(% style="width: 69px; background-color:#D9E2F3;color:#0070C0" %)(((
265 **Bit(bit)**
266 )))|=(% style="width: 253px;background-color:#D9E2F3;color:#0070C0" %)[15:14]|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)[13:0]
267 |(% style="width:66px" %)(((
268 **Value**
269 )))|(% style="width:250px" %)(((
270 BAT Status
271 00(b): Ultra Low ( BAT <= 2.50v)
272 01(b): Low (2.50v <=BAT <= 2.55v)
273 10(b): OK (2.55v <= BAT <=2.65v)
274 11(b): Good (BAT >= 2.65v)
275 )))|(% style="width:152px" %)Actually BAT voltage
276
277 **(b)stands for binary**
278
279
280 [[image:image-20220522235639-1.png||_mstalt="431392" height="139" width="727"]]
281
282
283 Check the battery voltage for LHT65N.
284
285 * BAT status=(0Xcba4>>14)&0xFF=11 (BIN) ，very good
286
287 * Battery Voltage =0xCBA4&0x3FFF=0x0BA4=2980mV
288
289
290 === 2.4.3 Built-in Temperature ===
291
292
293 [[image:image-20220522235639-2.png||_mstalt="431756" height="138" width="722"]]
294
295 * Temperature:  0x0ABB/100=27.47℃
296
297 [[image:image-20220522235639-3.png||_mstalt="432120"]]
298
299 * Temperature:  (0xF5C6-65536)/100=-26.18℃
300
301
302 (% style="display:none" %)
303
304 === 2.4.4 Built-in Humidity ===
305
306
307 [[image:image-20220522235639-4.png||_mstalt="432484" height="138" width="722"]]
308
309 * Humidity:    0x025C/10=60.4%
310
311
312 (% style="display:none" %)
313
314 === 2.4.5 Ext # ===
315
316
317 Bytes for External Sensor:
318
319 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:425px" %)
320 |=(% style="width: 102px; background-color:#D9E2F3;color:#0070C0" %)**EXT # **Value|=(% style="width: 323px;background-color:#D9E2F3;color:#0070C0" %)External Sensor Type
321 |(% style="width:102px" %)0x01|(% style="width:319px" %)Sensor E3, Temperature Sensor
322 |(% style="width:102px" %)0x09|(% style="width:319px" %)Sensor E3, Temperature Sensor, Datalog Mod
323
324
325 === 2.4.6 Ext value ===
326
327 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
328
329
330 [[image:image-20220522235639-5.png||_mstalt="432848"]]
331
332
333 * DS18B20 temp=0x0ADD/100=27.81℃
334
335 The last 2 bytes of data are meaningless
336
337
338
339 [[image:image-20220522235639-6.png||_mstalt="433212"]]
340
341
342 * External temperature= (0xF54F-65536)/100=-27.37℃
343
344 F54F :  (F54F & 8000 == 1) , temp = (F54F - 65536)/100 = 27.37℃
345
346 （0105 & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative）
347
348 The last 2 bytes of data are meaningless
349
350 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
351
352
353
354 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
355
356
357 (((
358 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:
359 )))
360
361
362 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
363 |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
364 **Size(bytes)**
365 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
366 **2**
367 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
368 **2**
369 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
370 **2**
371 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
372 **1**
373 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
374 **4**
375 )))
376 |(% style="width:110px" %)(((
377 **Value**
378 )))|(% style="width:71px" %)(((
379 External temperature
380 )))|(% style="width:99px" %)(((
381 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
382 )))|(% style="width:132px" %)(((
383 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
384 )))|(% style="width:54px" %)(((
385 Status & Ext
386 )))|(% style="width:64px" %)(((
387 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
388 )))
389
390 * **Battery status & Built-in Humidity**
391
392 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:461px" %)
393 |=(% style="width: 69px;background-color:#D9E2F3;color:#0070C0" %)Bit(bit)|=(% style="width: 258px;background-color:#D9E2F3;color:#0070C0" %)[15:14]|=(% style="width: 134px;background-color:#D9E2F3;color:#0070C0" %)[11:0]
394 |(% style="width:67px" %)**Value**|(% style="width:256px" %)(((
395 BAT Status
396 00(b): Ultra Low ( BAT <= 2.50v)
397 01(b): Low  (2.50v <=BAT <= 2.55v)
398 10(b): OK   (2.55v <= BAT <=2.65v)
399 11(b): Good   (BAT >= 2.65v)
400 )))|(% style="width:132px" %)(((
401 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
402 )))
403
404 * **Status & Ext Byte**
405
406 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
407 |(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**Bits**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**7**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**6**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**5**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**[3:0]**
408 |(% 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)
409
410 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
411 * (% 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.
412 * (% 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)
413
414
415 ==== 2.4.6.3 Ext~=6, ADC Sensor(use with E2 Cable) ====
416
417
418 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
419
420 be used to power the external ADC sensor; user can control the power on time for this
421
422 (% style="color:blue" %)**sensor by setting:**
423
424 **AT+EXT=6,timeout**  (% style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
425
426 **For example:**
427
428 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
429
430
431 Or use **downlink command A2** to set the same.
432
433 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
434
435 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.
436
437 [[image:image-20220628150112-1.png||_mstalt="427414" height="241" width="285"]]
438
439
440 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
441
442 [[image:image-20220628150714-4.png||_mstalt="431054"]]
443
444
445 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.
446
447
448 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
449
450 [[image:image-20220628151005-5.png||_mstalt="429546"]]
451
452
453 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
454
455 [[image:image-20220628151056-6.png||_mstalt="431873"]]
456
457
458 3) Within range
459
460 [[image:image-20220628151143-7.png||_mstalt="431210"]]
461
462
463
464 ==== 2.4.6.4 Ext~=2 TMP117 Sensor((% style="display:none" %) (%%)Since Firmware v1.3)(% style="display:none" %) (%%) ====
465
466 [[image:image-20230717151328-8.png]]
467
468 (% style="display:none" %) (%%)
469
470
471
472 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
473
474 [[image:image-20220906102307-7.png||_mstalt="430443"]]
475
476
477 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**(% style="color: blue; display: none" %)** **
478
479 The external cable NE2 can be use for MOD4 and MOD8
480
481
482
483 ==== 2.4.6.5 Ext~=11 SHT31 Sensor ((% style="display:none" %) (%%)Since Firmware v1.4.1) ====
484
485
486
487 [[image:image-20230717151245-7.png]]
488
489 (% style="color:blue" %)**Ext=11,Temperature & Humidity Sensor(SHT31)：**
490
491 [[image:SHT31.png]]
492
493
494
495 ==== 2.4.6.6 Ext~=4 Interrupt Mode(Since Firmware v1.3) ====
496
497
498 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
499
500
501 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
502
503 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
504
505 In Open State, the power consumption is the same as if there is no probe
506
507 In Close state, the power consumption will be 3uA higher than normal.
508
509 [[image:image-20220906100852-1.png||_mstalt="429156" height="205" width="377"]]
510
511
512 Ext=4,Interrupt Sensor：
513
514 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:504px" %)
515 |(% style="width:101px" %)(((
516 **AT+EXT=4,1**
517 )))|(% style="width:395px" %)(((
518 **Sent uplink packet in both rising and falling interrupt**
519 )))
520 |(% style="width:101px" %)(((
521 **AT+EXT=4,2**
522 )))|(% style="width:395px" %)(((
523 **Sent uplink packet only in falling interrupt**
524 )))
525 |(% style="width:101px" %)(((
526 **AT+EXT=4,3**
527 )))|(% style="width:395px" %)(((
528 **Sent uplink packet only in rising interrupt**
529 )))
530
531 Trigger by falling edge:
532
533 [[image:image-20220906101145-2.png||_mstalt="428324"]]
534
535
536 Trigger by raising edge：
537
538 [[image:image-20220906101145-3.png||_mstalt="428688"]]
539
540
541
542 ==== 2.4.6.7 Ext~=8 Counting Mode(Since Firmware v1.3) ====
543
544
545 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
546
547
548 (% style="color:blue" %)**Case 1**(%%):  Low power consumption Flow Sensor, such flow sensor has pulse output and the power consumption in uA level and can be powered by LHT65N.
549
550 [[image:image-20220906101320-4.png||_mstalt="427336" height="366" width="698"]]
551
552
553 (% style="color:blue" %)**Case 2**(%%):  Normal Flow Sensor: Such flow sensor has higher power consumption and is not suitable to be powered by LHT65N. It is powered by external power and output <3.3v pulse
554
555 [[image:image-20220906101320-5.png||_mstalt="427700" height="353" width="696"]]
556
557
558 Ext=8, Counting Sensor ( 4 bytes)：
559
560 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:330px" %)
561 |(% style="width:131px" %)(((
562 **AT+EXT=8,0**
563 )))|(% style="width:195px" %)(((
564 **Count at falling interrupt**
565 )))
566 |(% style="width:131px" %)(((
567 **AT+EXT=8,1**
568 )))|(% style="width:195px" %)(((
569 **Count at rising interrupt**
570 )))
571 |(% style="width:131px" %)(((
572 **AT+SETCNT=60**
573 )))|(% style="width:195px" %)(((
574 **Sent current count to 60**
575 )))
576
577 [[image:image-20220906101320-6.png||_mstalt="428064"]]
578
579
580 (% style="color:blue" %)**A2 downlink Command：**
581
582 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
583
584 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
585
586 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
587
588 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
589
590 A2 08 02 00 00 00 3C:  Same as AT+ SETCNT=60  (AT+ SETCNT = 4th byte and 5th byte and 6th byte and 7th byte)
591
592
593 ==== 2.4.6.8 Ext~=10, E2 sensor (TMP117)with Unix Timestamp(Since firmware V1.3.2) ====
594
595
596 (((
597 Timestamp mode is designed for LHT65N with E2 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:
598 )))
599
600
601 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
602 |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
603 **Size(bytes)**
604 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
605 **2**
606 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
607 **2**
608 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
609 **2**
610 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
611 **1**
612 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
613 **4**
614 )))
615 |(% style="width:110px" %)(((
616 **Value**
617 )))|(% style="width:71px" %)(((
618 External temperature
619 )))|(% style="width:99px" %)(((
620 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
621 )))|(% style="width:132px" %)(((
622 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
623 )))|(% style="width:54px" %)(((
624 Status & Ext
625 )))|(% style="width:64px" %)(((
626 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
627 )))
628
629 * **Battery status & Built-in Humidity**
630
631 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:461px" %)
632 |=(% style="width: 69px;background-color:#D9E2F3;color:#0070C0" %)Bit(bit)|=(% style="width: 258px;background-color:#D9E2F3;color:#0070C0" %)[15:14]|=(% style="width: 134px;background-color:#D9E2F3;color:#0070C0" %)[11:0]
633 |(% style="width:67px" %)**Value**|(% style="width:256px" %)(((
634 BAT Status
635 00(b): Ultra Low ( BAT <= 2.50v)
636 01(b): Low  (2.50v <=BAT <= 2.55v)
637 10(b): OK   (2.55v <= BAT <=2.65v)
638 11(b): Good   (BAT >= 2.65v)
639 )))|(% style="width:132px" %)(((
640 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
641 )))
642
643 * **Status & Ext Byte**
644
645 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
646 |(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**Bits**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**7**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**6**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**5**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**[3:0]**
647 |(% 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)
648
649 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
650 * (% 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.
651 * (% 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)
652
653
654 == 2.5 Show data on Datacake ==
655
656
657 (((
658 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:
659 )))
660
661
662 (((
663 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
664 )))
665
666 (((
667 (% style="color:blue" %)**Step 2**(%%): Configure your Application to forward data to Datacake you will need to add integration. Go to TTN V3 Console ~-~-> Applications ~-~-> Integrations ~-~-> Add Integrations.
668 )))
669
670
671 (((
672 Add Datacake:
673 )))
674
675
676 [[image:image-20220523000825-7.png||_mstalt="429884" height="262" width="583"]]
677
678
679
680 Select default key as Access Key:
681
682
683 [[image:image-20220523000825-8.png||_mstalt="430248" height="453" width="406"]]
684
685
686 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
687
688
689 [[image:image-20220523000825-9.png||_mstalt="430612" height="366" width="392"]]
690
691
692 [[image:image-20220523000825-10.png||_mstalt="450619" height="413" width="728"]]
693
694
695 == 2.6 Datalog Feature ==
696
697
698 (((
699 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.
700 )))
701
702
703 === 2.6.1 Ways to get datalog via LoRaWAN ===
704
705
706 There are two methods:
707
708 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
709
710
711 (% style="color:blue" %)**Method 2: **(%%)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 messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
712
713
714 (% style="color:red" %)**Note for method 2:**
715
716 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
717 * b) LHT65N will send data in **CONFIRMED Mode** when PNACKMD=1, but LHT65N won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if LHT65N gets a ACK, LHT65N will consider there is a network connection and resend all NONE-ACK Message.
718
719 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
720
721
722 [[image:image-20220703111700-2.png||_mstalt="426244" height="381" width="1119"]]
723
724
725 === 2.6.2 Unix TimeStamp ===
726
727
728 LHT65N uses Unix TimeStamp format based on
729
730
731 [[image:image-20220523001219-11.png||_mstalt="450450" height="97" width="627"]]
732
733
734
735 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
736
737 Below is the converter example
738
739 [[image:image-20220523001219-12.png||_mstalt="450827" height="298" width="720"]]
740
741
742 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
743
744
745 === 2.6.3 Set Device Time ===
746
747
748 (((
749 (% style="color:blue" %)**There are two ways to set device's time:**
750 )))
751
752 (((
753 **1.  Through LoRaWAN MAC Command (Default settings)**
754 )))
755
756 (((
757 User need to set SYNCMOD=1 to enable sync time via MAC command.
758 )))
759
760 (((
761 Once LHT65N Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to LHT65N. If LHT65N fails to get the time from the server, LHT65N will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
762 )))
763
764 (((
765 (% 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.**
766 )))
767
768
769 (((
770 **2. Manually Set Time**
771 )))
772
773 (((
774 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
775 )))
776
777
778 === 2.6.4 Poll sensor value ===
779
780
781 User can poll sensor value based on timestamps from the server. Below is the downlink command.
782
783 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:428px" %)
784 |(% style="background-color:#d9e2f3; color:#0070c0; width:58px" %)**1byte**|(% style="background-color:#d9e2f3; color:#0070c0; width:128px" %)**4bytes**|(% style="background-color:#d9e2f3; color:#0070c0; width:123px" %)**4bytes**|(% style="background-color:#d9e2f3; color:#0070c0; width:116px" %)**1byte**
785 |(% style="width:58px" %)31|(% style="width:128px" %)Timestamp start|(% style="width:123px" %)Timestamp end|(% style="width:116px" %)Uplink Interval
786
787 Timestamp start and Timestamp end use Unix TimeStamp format as mentioned above. Devices will reply with all data log during this time period, use the uplink interval.
788
789 For example, downlink command (% _mstmutation="1" %)**31 5FC5F350 5FC6 0160 05**(%%)
790
791 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00's data
792
793 Uplink Internal =5s, means LHT65N will send one packet every 5s. range 5~~255s.
794
795
796 === 2.6.5 Datalog Uplink payload ===
797
798
799 The Datalog poll reply uplink will use below payload format.
800
801 **Retrieval data payload:**
802
803 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
804 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
805 **Size(bytes)**
806 )))|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)**1**|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)**4**
807 |(% style="width:97px" %)**Value**|(% style="width:123px" %)[[External sensor data>>||anchor="H2.4.6Extvalue"]]|(% style="width:108px" %)[[Built In Temperature>>||anchor="H2.4.3Built-inTemperature"]]|(% style="width:133px" %)[[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]|(% style="width:159px" %)Poll message flag & Ext|(% style="width:80px" %)[[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
808
809 **Poll message flag & Ext:**
810
811 [[image:image-20221006192726-1.png||_mstalt="430508" height="112" width="754"]]
812
813 (% style="color:blue" %)**No ACK Message**(%%):  1: This message means this payload is fromn Uplink Message which doesn't get ACK from the server before ( for [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]] feature)
814
815 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
816
817 * Poll Message Flag is set to 1.
818
819 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
820
821 For example, in US915 band, the max payload for different DR is:
822
823 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
824
825 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
826
827 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
828
829 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
830
831 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
832
833
834 **Example:**
835
836 If LHT65N has below data inside Flash:
837
838 [[image:image-20230426171833-4.png]]
839
840
841 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
842
843 Where : Start time: 60065F97 = time 21/1/19 04:27:03
844
845 Stop time: 60066DA7= time 21/1/19 05:27:03
846
847
848 **LHT65N will uplink this payload.**
849
850 [[image:image-20220523001219-13.png||_mstalt="451204" height="421" style="text-align:left" width="727"]]
851
852
853 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
854
855 Where the first 11 bytes is for the first entry:
856
857 7FFF089801464160065F97
858
859 Ext sensor data=0x7FFF/100=327.67
860
861 Temp=0x088E/100=22.00
862
863 Hum=0x014B/10=32.6
864
865 poll message flag & Ext=0x41,means reply data,Ext=1
866
867 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
868
869
870 == 2.7 Alarm Mode & Feature "Multi sampling, one uplink" ==
871
872
873 (((
874 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.
875 )))
876
877 (((
878 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
879
880
881 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
882
883
884 **Internal GXHT30 temperature alarm(Acquisition time: fixed at one minute)**
885
886 (((
887 (% class="box infomessage" %)
888 (((
889 **AT+WMOD=3**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
890
891 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
892
893 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
894
895 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
896
897 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
898
899 **AT+LEDALARM=1** :       Enable LED visual Alarm.
900 )))
901 )))
902
903 (% style="color:#4f81bd" %)**Downlink Command:**
904
905 AT+WMOD=1:  A501  , AT+WMOD=0 :  A600
906
907 AT+CITEMP=1 : A60001
908
909 AT+ARTEMP=1,60  :  A70001003C
910
911 AT+ARTEMP=-16,60 :  A7FFF0003C
912
913 AT+LEDALARM=1  :  3601
914
915
916 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
917
918 Total bytes: 8 bytes
919
920 **Example: **AA0100010001003C
921
922 WMOD=01
923
924 CITEMP=0001
925
926 TEMPlow=0001
927
928 TEMPhigh=003C
929
930
931 **DS18B20 and TMP117 Threshold Alarm**
932
933 **~ AT+WMOD=1,60,-10,20**
934
935 (% style="color:#4f81bd" %)**Downlink Command:**
936
937 **Example: **A5013CFC180014
938
939 MOD=01
940
941 CITEMP=3C(S)
942
943 TEMPlow=FC18
944
945 TEMPhigh=0014
946
947
948 **Fluctuation alarm for DS18B20 and TMP117(Acquisition time: minimum 1s)**
949
950 **AT+WMOD=2,60,5** 
951
952 (% style="color:#4f81bd" %)**Downlink Command:**
953
954 **Example: **A5023C05
955
956 MOD=02
957
958 CITEMP=3C(S)
959
960 temperature fluctuation=05
961
962
963 **Sampling multiple times and uplink together**
964
965 **AT+WMOD=3,1,60,20,-16,32,1**   
966
967 Explain:
968
969 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3**
970 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
971 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.
972 * (% style="color:#037691" %)**parameter4: **(%%)When there is **20** sampling dats, Device will send these data via one uplink. (max value is 60, means max 60 sampling in one uplink)
973 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
974 * (% style="color:#037691" %)**parameter7:**(%%) 1 to enable temperature alarm, **0** to disable the temperature alarm. If alarm is enabled, a data will be sent immediately  if temperate exceeds the Alarm range.
975
976 (% style="color:#4f81bd" %)**Downlink Command:**
977
978 **Example: **A50301003C14FFF0002001
979
980 MOD=03
981
982 TEMP=DS18B20
983
984 CITEMP=003C(S)
985
986 Total number of acquisitions=14
987
988 TEMPlow=FFF0
989
990 TEMPhigh=0020
991
992 ARTEMP=01
993
994
995 **Uplink payload( Fport=3)**
996
997 **Example: CBEA**01**0992**//0A41//**09C4**
998
999 BatV=CBEA
1000
1001 TEMP=DS18B20
1002
1003 Temp1=0992  ~/~/ 24.50℃
1004
1005 Temp2=0A41  ~/~/ 26.25℃
1006
1007 Temp3=09C4  ~/~/ 25.00℃
1008
1009 (% style="color:red" %)**Note: This uplink will automatically select the appropriate DR according to the data length**
1010
1011 (% style="color:red" %)** In this mode, the temperature resolution of ds18b20 is 0.25℃ to save power consumption**
1012 )))
1013
1014
1015 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
1016
1017
1018 (% class="box infomessage" %)
1019 (((
1020 (((
1021 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1022 )))
1023
1024 (((
1025 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1026 )))
1027
1028 (((
1029 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1030 )))
1031
1032 (((
1033 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
1034 )))
1035
1036 (((
1037 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1038 )))
1039 )))
1040
1041 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1042
1043 Total bytes: 8 bytes
1044
1045 **Example:**AA0100010001003C
1046
1047 WMOD=01
1048
1049 CITEMP=0001
1050
1051 TEMPlow=0001
1052
1053 TEMPhigh=003C
1054
1055
1056 == 2.8 LED Indicator ==
1057
1058
1059 The LHT65 has a triple color LED which for easy showing different stage .
1060
1061 While user press ACT button, the LED will work as per LED status with ACT button.
1062
1063 In a normal working state:
1064
1065 * For each uplink, the BLUE LED or RED LED will blink once.
1066 BLUE LED when external sensor is connected.
1067 * RED LED when external sensor is not connected
1068 * For each success downlink, the PURPLE LED will blink once
1069
1070
1071 == 2.9 installation ==
1072
1073
1074 [[image:image-20220516231650-1.png||_mstalt="428597" height="436" width="428"]]
1075
1076
1077 = 3. Sensors and Accessories =
1078
1079 == 3.1 E2 Extension Cable ==
1080
1081
1082 [[image:image-20220619092222-1.png||_mstalt="429533" height="182" width="188"]][[image:image-20220619092313-2.png||_mstalt="430222" height="182" width="173"]]
1083
1084
1085 **1m long breakout cable for LHT65N. Features:**
1086
1087 * (((
1088 Use for AT Command, works for both LHT52/LHT65N
1089 )))
1090 * (((
1091 Update firmware for LHT65N, works for both LHT52/LHT65N
1092 )))
1093 * (((
1094 Supports ADC mode to monitor external ADC
1095 )))
1096 * (((
1097 Supports Interrupt mode
1098 )))
1099 * (((
1100 Exposed All pins from the LHT65N Type-C connector.
1101
1102
1103
1104 )))
1105
1106 [[image:image-20220619092421-3.png||_mstalt="430547" height="371" width="529"]]
1107
1108
1109 == 3.2 E3 Temperature Probe ==
1110
1111
1112 [[image:image-20220515080154-4.png||_mstalt="434681" alt="photo-20220515080154-4.png" height="182" width="161"]] [[image:image-20220515080330-5.png||_mstalt="428792" height="201" width="195"]]
1113
1114
1115 Temperature sensor with 2 meters cable long
1116
1117 * Resolution: 0.0625 °C
1118 * ±0.5°C accuracy from -10°C to +85°C
1119 * ±2°C accuracy from -55°C to +125°C
1120 * Operating Range: -40 ~~ 125 °C
1121 * Working voltage 2.35v ~~ 5v
1122
1123
1124 == 3.3 E31F Temperature Probe ==
1125
1126
1127 [[image:65N-E31F-1.jpg||height="169" width="170"]] [[image:image-20230717151424-9.png||height="221" width="204"]](% style="display:none" %)
1128
1129
1130 Temperature sensor with 1 meters cable long
1131
1132
1133 **Built-in Temperature Sensor:**
1134
1135 * Resolution: 0.01 °C
1136 * Accuracy Tolerance : Typ ±0.3 °C
1137 * Long Term Drift: < 0.02 °C/yr
1138 * Operating Range: -40 ~~ 80 °C
1139
1140 **Built-in Humidity Sensor:**
1141
1142 * Resolution: 0.04 % RH
1143 * Accuracy Tolerance : Typ ±3 % RH
1144 * Long Term Drift: < 0.02 °C/yr
1145 * Operating Range: 0 ~~ 96 % RH
1146
1147 **External Temperature Sensor :**
1148
1149 * Resolution: 0.01 °C
1150 * Accuracy Tolerance : Typical ±0.3 °C
1151 * Long Term Drift: < 0.02 °C/yr
1152 * Operating Range: -40 ~~ 125 °C
1153
1154 **External Humidity Sensor :**
1155
1156 * Resolution: 0.04 % RH
1157 * Accuracy Tolerance : Typ ±3 % RH
1158 * Long Term Drift: < 0.02 °C/yr
1159 * Operating Range: 0 ~~ 96 % RH
1160
1161
1162 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1163
1164
1165 (((
1166 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1167 )))
1168
1169 * (((
1170 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1171 )))
1172
1173 * (((
1174 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1175 )))
1176
1177 (((
1178 There are two kinds of commands to configure LHT65N, they are:
1179 )))
1180
1181 * (((
1182 (% style="color:#4f81bd" %)**General Commands**.
1183 )))
1184
1185 (((
1186 These commands are to configure:
1187 )))
1188
1189 1. (((
1190 General system settings like: uplink interval.
1191 )))
1192 1. (((
1193 LoRaWAN protocol & radio-related commands.
1194 )))
1195
1196 (((
1197 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]]
1198 )))
1199
1200 * (((
1201 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1202 )))
1203
1204 (((
1205 These commands are only valid for LHT65N, as below:
1206 )))
1207
1208
1209 == 4.1 Set Transmit Interval Time ==
1210
1211
1212 Feature: Change LoRaWAN End Node Transmit Interval.
1213
1214
1215 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1216
1217 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:501px" %)
1218 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:166px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:180px" %)**Response**
1219 |(% style="width:155px" %)AT+TDC=?|(% style="width:162px" %)Show current transmit Interval|(% style="width:177px" %)30000 OK the interval is 30000ms = 30s
1220 |(% style="width:155px" %)AT+TDC=60000|(% style="width:162px" %)Set Transmit Interval|(% style="width:177px" %)OK Set transmit interval to 60000ms = 60 seconds
1221
1222 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1223
1224 Format: Command Code (0x01) followed by 3 bytes time value.
1225
1226 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1227
1228 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1229
1230 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1231
1232
1233 == 4.2 Set External Sensor Mode ==
1234
1235
1236 Feature: Change External Sensor Mode.
1237
1238
1239 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1240
1241
1242 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:468px" %)
1243 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:153px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:160px" %)**Response**
1244 |(% style="width:155px" %)AT+EXT=?|(% style="width:151px" %)Get current external sensor mode|(% style="width:158px" %)1 OK External Sensor mode =1
1245 |(% style="width:155px" %)AT+EXT=1|(% colspan="2" rowspan="1" style="width:309px" %)Set external sensor mode to 1
1246 |(% style="width:155px" %)AT+EXT=9|(% colspan="2" rowspan="1" style="width:309px" %)Set to external DS18B20 with timestamp
1247
1248 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1249
1250 Total bytes: 2 ~~ 5 bytes
1251
1252 **Example:**
1253
1254 * 0xA201: Set external sensor type to E1
1255
1256 * 0xA209: Same as AT+EXT=9
1257
1258 * 0xA20702003c: Same as AT+SETCNT=60
1259
1260
1261 == 4.3 Enable/Disable uplink Temperature probe ID ==
1262
1263
1264 (((
1265 Feature: If PID is enabled, device will send the temperature probe ID on:
1266 )))
1267
1268 * (((
1269 First Packet after OTAA Join
1270 )))
1271 * (((
1272 Every 24 hours since the first packet.
1273 )))
1274
1275 (((
1276 PID is default set to disable (0)
1277
1278
1279 )))
1280
1281 (% style="color:#4f81bd" %)**AT Command:**
1282
1283 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:381px" %)
1284 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:138px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:88px" %)**Response**
1285 |(% style="width:155px" %)AT+PID=1|(% style="width:136px" %)Enable PID uplink|(% style="width:86px" %)OK
1286
1287 (% style="color:#4f81bd" %)**Downlink Command:**
1288
1289 * **0xA800**  **~-~->** AT+PID=0
1290 * **0xA801**     **~-~->** AT+PID=1
1291
1292
1293 == 4.4 Set Password ==
1294
1295
1296 Feature: Set device password, max 9 digits
1297
1298 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1299
1300 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:372px" %)
1301 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:128px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:89px" %)**Response**
1302 |(% style="width:155px" %)AT+PWORD=?|(% style="width:124px" %)Show password|(% style="width:86px" %)(((
1303 123456
1304
1305 OK
1306 )))
1307 |(% style="width:155px" %)AT+PWORD=999999|(% style="width:124px" %)Set password|(% style="width:86px" %)OK
1308
1309 (% style="color:#4f81bd" %)**Downlink Command:**
1310
1311 No downlink command for this feature.
1312
1313
1314 == 4.5 Quit AT Command ==
1315
1316
1317 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1318
1319 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1320
1321 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:433px" %)
1322 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:191px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:86px" %)**Response**
1323 |(% style="width:155px" %)AT+DISAT|(% style="width:191px" %)Quit AT Commands mode|(% style="width:86px" %)OK
1324
1325 (% style="color:#4f81bd" %)**Downlink Command:**
1326
1327 No downlink command for this feature.
1328
1329
1330 == 4.6 Set to sleep mode ==
1331
1332
1333 Feature: Set device to sleep mode
1334
1335 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1336 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1337
1338 (% style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1339
1340 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:513px" %)
1341 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:140px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:218px" %)**Response**
1342 |(% style="width:155px" %)AT+SLEEP|(% style="width:139px" %)Set to sleep mode|(% style="width:213px" %)(((
1343 Clear all stored sensor data…
1344
1345 OK
1346 )))
1347
1348 (% style="color:#4f81bd" %)**Downlink Command:**
1349
1350 * There is no downlink command to set to Sleep mode.
1351
1352
1353 == 4.7 Set system time ==
1354
1355
1356 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1357
1358 (% style="color:#4f81bd" %)**AT Command:**
1359
1360 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:506px" %)
1361 |(% style="background-color:#d9e2f3; color:#0070c0; width:188px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:318px" %)**Function**
1362 |(% style="width:154px" %)AT+TIMESTAMP=1611104352|(% style="width:285px" %)(((
1363 OK
1364
1365 Set System time to 2021-01-20 00:59:12
1366 )))
1367
1368 (% style="color:#4f81bd" %)**Downlink Command:**
1369
1370 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1371
1372
1373 == 4.8 Set Time Sync Mode ==
1374
1375
1376 (((
1377 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1378 )))
1379
1380 (((
1381 SYNCMOD is set to 1 by default. If user want to set a different time from LoRaWAN server, user need to set this to 0.
1382 )))
1383
1384 (% style="color:#4f81bd" %)**AT Command:**
1385
1386 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:475px" %)
1387 |(% style="background-color:#d9e2f3; color:#0070c0; width:156px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:315px" %)**Function**
1388 |(% style="width:156px" %)AT+SYNCMOD=1|(% style="width:315px" %)Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
1389
1390 (% style="color:#4f81bd" %)**Downlink Command:**
1391
1392 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1393 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1394
1395
1396 == 4.9 Set Time Sync Interval ==
1397
1398
1399 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1400
1401 (% style="color:#4f81bd" %)**AT Command:**
1402
1403 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:472px" %)
1404 |(% style="background-color:#d9e2f3; color:#0070c0; width:158px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:314px" %)**Function**
1405 |(% style="width:156px" %)AT+SYNCTDC=0x0A |(% style="width:311px" %)Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
1406
1407 (% style="color:#4f81bd" %)**Downlink Command:**
1408
1409 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1410
1411
1412 == 4.10 Print data entries base on page. ==
1413
1414
1415 Feature: Print the sector data from start page to stop page (max is 416 pages).
1416
1417 (% style="color:#4f81bd" %)**AT Command: AT+PDTA**
1418
1419 [[image:image-20230426164330-2.png]]
1420
1421 (% style="color:#4f81bd" %)**Downlink Command:**
1422
1423 No downlink commands for feature
1424
1425
1426 == 4.11 Print last few data entries. ==
1427
1428
1429 Feature: Print the last few data entries
1430
1431 (% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1432
1433 [[image:image-20230426164932-3.png]]
1434
1435 (% style="color:#4f81bd" %)**Downlink Command:**
1436
1437 No downlink commands for feature
1438
1439
1440 == 4.12 Clear Flash Record ==
1441
1442
1443 Feature: Clear flash storage for data log feature.
1444
1445 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1446
1447 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:503px" %)
1448 |(% style="background-color:#d9e2f3; color:#0070c0; width:157px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:137px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:209px" %)**Response**
1449 |(% style="width:155px" %)AT+CLRDTA |(% style="width:134px" %)Clear date record|(% style="width:209px" %)(((
1450 Clear all stored sensor data…
1451
1452 OK
1453 )))
1454
1455 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1456
1457 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1458
1459
1460 == 4.13 Auto Send None-ACK messages ==
1461
1462
1463 Feature: LHT65N will wait for ACK for each uplink, If LHT65N doesn't get ACK from the IoT server, it will consider the message doesn't arrive server and store it. LHT65N keeps sending messages in normal periodically. Once LHT65N gets ACK from a server, it will consider the network is ok and start to send the not-arrive message.
1464
1465 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1466
1467 The default factory setting is 0
1468
1469 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:367px" %)
1470 |=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 87px;background-color:#D9E2F3;color:#0070C0" %)**Response**
1471 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1472
1473 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1474
1475 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1476
1477
1478 == 4.14 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm(Since firmware 1.3.0) ==
1479
1480
1481 Feature: Set internal and external temperature sensor alarms.
1482
1483 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
1484 |=(% style="width: 250px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 200px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**Response**
1485 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1486
1487 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1488
1489 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1490
1491 0): Cancel
1492
1493 1): Threshold alarm
1494
1495 2): Fluctuation alarm
1496
1497
1498 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1499
1500 (% style="color:red" %)**Note: When the collection time is less than 60 seconds and always exceeds the set alarm threshold, the sending interval will not be the collection time, but will be sent every 60 seconds.**
1501
1502
1503 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1504
1505 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1506
1507 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1508
1509
1510 2):  If Alarm Mode is set to 2: Parameter 3 is valid, which represents the difference between the currently collected temperature and the last uploaded temperature.
1511
1512 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1513
1514 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1515
1516
1517 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1518
1519 0xA5 00 ~-~- AT+WMOD=0.
1520
1521 0xA5 01 0A 11 94 29 04 ~-~- AT+WMOD=1,10,45,105  (AT+WMOD = second byte, third byte, fourth and fifth bytes divided by 100, sixth and seventh bytes divided by 100 )
1522
1523 0XA5 01 0A F9 C0 29 04 ~-~-AT+WMOD=1,10,-16,105(Need to convert -16 to -1600 for calculation，-1600(DEC)=FFFFFFFFFFFFF9C0(HEX)  FFFFFFFFFFFFF9C0(HEX) +10000(HEX)=F9C0(HEX))
1524
1525 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1526
1527 0xA5 FF ~-~- After the device receives it, upload the current alarm configuration (FPORT=8). Such as 01 0A 11 94 29 04 or 02 0A 02.
1528
1529
1530 = 5. Battery & How to replace =
1531
1532 == 5.1 Battery Type ==
1533
1534
1535 (((
1536 LHT65N is equipped with a 2400mAH Li-MnO2 (CR17505) battery . The battery is an un-rechargeable battery with low discharge rate targeting for up to 8~~10 years use. This type of battery is commonly used in IoT devices for long-term running, such as water meters.
1537 )))
1538
1539 (((
1540 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1541
1542
1543 [[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]
1544 )))
1545
1546 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1547
1548
1549 == 5.2 Replace Battery ==
1550
1551
1552 LHT65N has two screws on the back, Unscrew them, and changing the battery inside is ok. The battery is a general CR17450 battery. Any brand should be ok.
1553
1554 [[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]
1555
1556
1557 == 5.3 Battery Life Analyze ==
1558
1559
1560 (((
1561 Dragino battery-powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimated battery life:
1562 [[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]
1563 )))
1564
1565
1566 (((
1567 A full detail test report for LHT65N on different frequency can be found at : [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0>>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]
1568 )))
1569
1570
1571 = 6. FAQ =
1572
1573 == 6.1 How to use AT Command? ==
1574
1575
1576 LHT65N supports AT Command set.User can use a USB to TTL adapter plus the Program Cable to connect to LHT65 for using AT command, as below.
1577
1578 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1579
1580
1581 **Connection:**
1582
1583 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1584 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1585 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1586
1587 (((
1588 (% _mstmutation="1" style="color:red" %)**(Note: This pin only corresponds to the lead-out board sold by dragino company. For the lead-out board purchased by yourself, please refer to the pin description in Chapter 6.6)**
1589
1590 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.
1591 )))
1592
1593
1594 Input password and ATZ to activate LHT65N,As shown below:
1595
1596 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1597
1598
1599 AT Command List is as below:
1600
1601 AT+<CMD>? :  Help on <CMD>
1602
1603 AT+<CMD> :  Run <CMD>
1604
1605 AT+<CMD>=<value> :  Set the value
1606
1607 AT+<CMD>=? :  Get the value
1608
1609 AT+DEBUG:  Set more info output
1610
1611 ATZ:  Trig a reset of the MCU
1612
1613 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1614
1615 AT+DEUI:  Get or Set the Device EUI
1616
1617 AT+DADDR:  Get or Set the Device Address
1618
1619 AT+APPKEY:  Get or Set the Application Key
1620
1621 AT+NWKSKEY:  Get or Set the Network Session Key
1622
1623 AT+APPSKEY:  Get or Set the Application Session Key
1624
1625 AT+APPEUI:  Get or Set the Application EUI
1626
1627 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1628
1629 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1630
1631 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1632
1633 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1634
1635 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1636
1637 AT+RX2FQ:  Get or Set the Rx2 window frequency
1638
1639 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1640
1641 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1642
1643 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1644
1645 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1646
1647 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1648
1649 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1650
1651 AT+NWKID:  Get or Set the Network ID
1652
1653 AT+FCU:  Get or Set the Frame Counter Uplink
1654
1655 AT+FCD:  Get or Set the Frame Counter Downlink
1656
1657 AT+CLASS:  Get or Set the Device Class
1658
1659 AT+JOIN:  Join network
1660
1661 AT+NJS:  Get the join status
1662
1663 AT+SENDB:  Send hexadecimal data along with the application port
1664
1665 AT+SEND:  Send text data along with the application port
1666
1667 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1668
1669 AT+RECV:  Print last received data in raw format
1670
1671 AT+VER:  Get current image version and Frequency Band
1672
1673 AT+CFM:  Get or Set the confirmation mode (0-1)
1674
1675 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1676
1677 AT+SNR:  Get the SNR of the last received packet
1678
1679 AT+RSSI:  Get the RSSI of the last received packet
1680
1681 AT+TDC:  Get or set the application data transmission interval in ms
1682
1683 AT+PORT:  Get or set the application port
1684
1685 AT+DISAT:  Disable AT commands
1686
1687 AT+PWORD: Set password, max 9 digits
1688
1689 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1690
1691 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1692
1693 AT+PDTA:  Print the sector data from start page to stop page
1694
1695 AT+PLDTA:  Print the last few sets of data
1696
1697 AT+CLRDTA:  Clear the storage, record position back to 1st
1698
1699 AT+SLEEP:  Set sleep mode
1700
1701 AT+EXT:  Get or Set external sensor model
1702
1703 AT+BAT:  Get the current battery voltage in mV
1704
1705 AT+CFG:  Print all configurations
1706
1707 AT+WMOD:  Get or Set Work Mode
1708
1709 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1710
1711 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1712
1713 AT+SETCNT:  Set the count at present
1714
1715 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1716
1717 AT+RPL:  Get or set response level
1718
1719 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1720
1721 AT+LEAPSEC:  Get or Set Leap Second
1722
1723 AT+SYNCMOD:  Get or Set time synchronization method
1724
1725 AT+SYNCTDC:  Get or set time synchronization interval in day
1726
1727 AT+PID:  Get or set the PID
1728
1729
1730 == 6.2 Where to use AT commands and Downlink commands ==
1731
1732
1733 **AT commands: **
1734
1735 [[image:image-20220620153708-1.png||_mstalt="429806" height="603" width="723"]]
1736
1737
1738 **Downlink commands:**
1739
1740
1741 (% style="color:blue" %)**TTN:**
1742
1743 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1744
1745
1746
1747 (% style="color:blue" %)**Helium: **
1748
1749 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1750
1751
1752
1753 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1754
1755
1756 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1757
1758
1759 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1760
1761
1762
1763 (% style="color:blue" %)**Aws:**
1764
1765 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1766
1767
1768 == 6.3 How to change the uplink interval? ==
1769
1770
1771 Please see this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/||_mstmutation="1" style="background-color: rgb(255, 255, 255);"]]
1772
1773
1774 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1775
1776
1777 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1778
1779 [[image:1655802313617-381.png||_mstalt="293917"]]
1780
1781
1782 (((
1783 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.
1784 )))
1785
1786
1787 Input password and ATZ to activate LHT65N, As shown below:
1788
1789 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1790
1791
1792 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1793
1794
1795 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1796
1797
1798 (% style="color:blue" %)**Step1**(%%): Install [[TremoProgrammer>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AAAnJD_qGZ42bB52o4UmH9v9a/LHT65N%20Temperature%20%26%20Humidity%20Sensor/tool?dl=0&subfolder_nav_tracking=1]]  first.
1799
1800 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1801
1802
1803
1804 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): wiring method.(% style="display:none" %)
1805
1806 First connect the four lines;(% style="display:none" %)
1807
1808 [[image:image-20220621170938-1.png||_mstalt="431340" height="413" width="419"]],(% style="display:none" %)
1809
1810
1811 Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1812
1813 [[image:image-20220621170938-2.png||_mstalt="431704"]]
1814
1815
1816
1817 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1818
1819 [[image:image-20220615171334-6.png||_mstalt="431028"]]
1820
1821
1822 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1823
1824
1825 When this interface appears, it indicates that the download has been completed.
1826
1827 [[image:image-20220620160723-8.png||_mstalt="430703"]]
1828
1829
1830 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1831
1832
1833 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1834
1835
1836 [[image:image-20220623110706-1.png||_mstalt="427869"]]
1837
1838
1839 **UART Port of LHT65N:**
1840
1841 * (% class="mark" %)**PB0: RXD**
1842 * (% class="mark" %)**PB1: TXD**
1843 * (% class="mark" %)**GND**
1844
1845 [[image:image-20220623112117-4.png||_mstalt="428350" height="459" width="343"]]
1846
1847
1848 (((
1849 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.
1850 )))
1851
1852
1853 Input password and ATZ to activate LHT65N,As shown below:
1854
1855 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1856
1857
1858 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1859
1860
1861 [[image:image-20220623110706-1.png||_mstalt="427869"]]
1862
1863
1864 (% style="color:blue" %)**Step1**(%%): Install [[TremoProgrammer>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AAAnJD_qGZ42bB52o4UmH9v9a/LHT65N%20Temperature%20%26%20Humidity%20Sensor/tool?dl=0&subfolder_nav_tracking=1]]  first.
1865
1866 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1867
1868
1869
1870 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): wiring method.(% style="display:none" %)
1871
1872 First connect the four lines;
1873
1874 [[image:image-20220623113959-5.png||_mstalt="433485" height="528" width="397"]]
1875
1876 Connect A8 and GND with Dupont wire for a while and then separate, enter reset mode
1877
1878
1879
1880 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1881
1882 [[image:image-20220615171334-6.png||_mstalt="431028"]]
1883
1884
1885 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1886
1887
1888 When this interface appears, it indicates that the download has been completed.
1889
1890 [[image:image-20220620160723-8.png||_mstalt="430703"]]
1891
1892
1893 Finally,Disconnect 3.3v, Connect A8 and GND with Dupont wire for a while and then separate, exit reset mode
1894
1895
1896 == 6.8 Why can't I see the datalog information ==
1897
1898
1899 ~1. The time is not aligned, and the correct query command is not used.
1900
1901 2. Decoder error, did not parse the datalog data, the data was filtered.
1902
1903
1904 = 7. Order Info =
1905
1906
1907 Part Number: (% style="color:#4f81bd" %)** LHT65N-XX-YY**
1908
1909 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1910
1911 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1912 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1913 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1914 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1915 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1916 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**US915**(%%): LoRaWAN US915 band
1917 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1918 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1919
1920 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1921
1922 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1923
1924
1925 = 8. Packing Info =
1926
1927
1928 **Package Includes**:
1929
1930 * LHT65N Temperature & Humidity Sensor x 1
1931 * Optional external sensor
1932
1933 **Dimension and weight**:
1934
1935 * Device Size:  10 x 10 x 3.5 mm
1936 * Device Weight: 120.5g
1937
1938
1939 = 9. Reference material =
1940
1941
1942 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
1943
1944
1945 = 10. FCC Warning =
1946
1947
1948 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1949
1950 (1) This device may not cause harmful interference;
1951
1952 (2) this device must accept any interference received, including interference that may cause undesired operation.