Version 264.1 by Bei Jinggeng on 2023/10/13 11:38
Show last authors
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 == 1.3 Specification ==
59
60
61 (% style="color:#037691" %)**Built-in Temperature Sensor:**
62
63 * Resolution: 0.01 °C
64 * Accuracy Tolerance : Typ ±0.3 °C
65 * Long Term Drift: < 0.02 °C/yr
66 * Operating Range: -40 ~~ 85 °C
67
68 (% style="color:#037691" %)**Built-in Humidity Sensor:**
69
70 * Resolution: 0.04 %RH
71 * Accuracy Tolerance : Typ ±3 %RH
72 * Long Term Drift: < 0.02 °C/yr
73 * Operating Range: 0 ~~ 96 %RH
74
75 (% style="color:#037691" %)**External Temperature Sensor:**
76
77 * Resolution: 0.0625 °C
78 * ±0.5°C accuracy from -10°C to +85°C
79 * ±2°C accuracy from -55°C to +125°C
80 * Operating Range: -55 °C ~~ 125 °C
81
82 = 2. Connect LHT65N to IoT Server =
83
84 == 2.1 How does LHT65N work? ==
85
86
87 (((
88 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.
89 )))
90
91 (((
92 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.
93 )))
94
95
96 == 2.2 How to Activate LHT65N? ==
97
98
99 (((
100 The LHT65N has two working modes:
101 )))
102
103 * (((
104 (% 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.
105 )))
106 * (((
107 (% 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. 
108 )))
109
110 (((
111 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
112 )))
113
114
115 [[image:image-20230717144740-2.png||height="391" width="267"]]
116
117 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
118 |=(% 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**
119 |(% 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" %)(((
120 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.
121 )))
122 |(% 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" %)(((
123 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network.
124 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after join in network.
125 )))
126 |(% 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.
127
128 == 2.3 Example to join LoRaWAN network ==
129
130
131 (% class="wikigeneratedid" %)
132 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.
133
134
135 (% class="wikigeneratedid" %)
136 [[image:image-20220522232442-1.png||_mstalt="427830" height="387" width="648"]]
137
138
139 (((
140 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:
141 )))
142
143
144 === 2.3.1 Step 1: Create Device n TTN ===
145
146
147 (((
148 Create a device in TTN V3 with the OTAA keys from LHT65N.
149 )))
150
151 (((
152 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
153 )))
154
155 [[image:image-20230426083319-1.png||height="258" width="556"]]
156
157 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
158
159 Add APP EUI in the application.
160
161
162 [[image:image-20220522232916-3.png||_mstalt="430495"]]
163
164
165 [[image:image-20220522232932-4.png||_mstalt="430157"]]
166
167
168 [[image:image-20220522232954-5.png||_mstalt="431847"]]
169
170
171
172 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
173
174
175 [[image:image-20220522233026-6.png||_mstalt="429403"]]
176
177
178 Input APP EUI,  APP KEY and DEV EUI:
179
180
181 [[image:image-20220522233118-7.png||_mstalt="430430"]]
182
183
184 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
185
186
187 (((
188 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.
189 )))
190
191 [[image:image-20220522233300-8.png||_mstalt="428389" height="219" width="722"]]
192
193
194 == 2.4 Uplink Payload (Fport~=2) ==
195
196
197 (((
198 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
199 )))
200
201 (((
202 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
203 )))
204
205 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:390px" %)
206 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
207 **Size(bytes)**
208 )))|=(% style="width: 30px;background-color:#D9E2F3;color:#0070C0" %)(((
209 **2**
210 )))|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)(((
211 **2**
212 )))|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)(((
213 **2**
214 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
215 **1**
216 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
217 **4**
218 )))
219 |(% style="width:97px" %)(((
220 **Value**
221 )))|(% style="width:39px" %)(((
222 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
223 )))|(% style="width:100px" %)(((
224 (((
225 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
226 )))
227 )))|(% style="width:77px" %)(((
228 (((
229 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
230 )))
231 )))|(% style="width:47px" %)(((
232 [[Ext>>||anchor="H2.4.5Ext23"]] #
233 )))|(% style="width:51px" %)(((
234 [[Ext value>>||anchor="H2.4.6Extvalue"]]
235 )))
236
237 * The First 6 bytes: has fix meanings for every LHT65N.
238
239 * The 7th byte (EXT #): defines the external sensor model.
240
241 * 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.)
242
243 === 2.4.1 Decoder in TTN V3 ===
244
245
246 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.
247
248 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]]
249
250
251 [[image:image-20220522234118-10.png||_mstalt="451464" height="353" width="729"]]
252
253
254 === 2.4.2 BAT-Battery Info ===
255
256
257 These two bytes of BAT include the battery state and the actually voltage.
258
259 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:477px" %)
260 |=(% style="width: 69px; background-color:#D9E2F3;color:#0070C0" %)(((
261 **Bit(bit)**
262 )))|=(% style="width: 253px;background-color:#D9E2F3;color:#0070C0" %)[15:14]|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)[13:0]
263 |(% style="width:66px" %)(((
264 **Value**
265 )))|(% style="width:250px" %)(((
266 BAT Status
267 00(b): Ultra Low ( BAT <= 2.50v)
268 01(b): Low (2.50v <=BAT <= 2.55v)
269 10(b): OK (2.55v <= BAT <=2.65v)
270 11(b): Good (BAT >= 2.65v)
271 )))|(% style="width:152px" %)Actually BAT voltage
272
273 **(b)stands for binary**
274
275
276 [[image:image-20220522235639-1.png||_mstalt="431392" height="139" width="727"]]
277
278
279 Check the battery voltage for LHT65N.
280
281 * BAT status=(0Xcba4>>14)&0xFF=11 (BIN) ，very good
282
283 * Battery Voltage =0xCBA4&0x3FFF=0x0BA4=2980mV
284
285 === 2.4.3 Built-in Temperature ===
286
287
288 [[image:image-20220522235639-2.png||_mstalt="431756" height="138" width="722"]]
289
290 * Temperature:  0x0ABB/100=27.47℃
291
292 [[image:image-20220522235639-3.png||_mstalt="432120"]]
293
294 * Temperature:  (0xF5C6-65536)/100=-26.18℃
295
296 (% style="display:none" %)
297
298 === 2.4.4 Built-in Humidity ===
299
300
301 [[image:image-20220522235639-4.png||_mstalt="432484" height="138" width="722"]]
302
303 * Humidity:    0x025C/10=60.4%
304
305 (% style="display:none" %)
306
307 === 2.4.5 Ext # ===
308
309
310 Bytes for External Sensor:
311
312 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:425px" %)
313 |=(% style="width: 102px; background-color:#D9E2F3;color:#0070C0" %)**EXT # **Value|=(% style="width: 323px;background-color:#D9E2F3;color:#0070C0" %)External Sensor Type
314 |(% style="width:102px" %)0x01|(% style="width:319px" %)Sensor E3, Temperature Sensor
315 |(% style="width:102px" %)0x09|(% style="width:319px" %)Sensor E3, Temperature Sensor, Datalog Mod
316 |(% style="width:102px" %)0x06|(% style="width:319px" %)ADC Sensor(use with E2 Cable)
317 |(% style="width:102px" %)0x02|(% style="width:319px" %)TMP117 Sensor
318 |(% style="width:102px" %)0x11|(% style="width:319px" %)SHT31 Sensor
319 |(% style="width:102px" %)0x04|(% style="width:319px" %)Interrupt Mode
320 |(% style="width:102px" %)0x08|(% style="width:319px" %)Counting Mode
321 |(% style="width:102px" %)0x10|(% style="width:319px" %)E2 sensor (TMP117)with Unix Timestamp
322
323 (% class="wikigeneratedid" %)
324 === ===
325
326 === 2.4.6 Ext value ===
327
328 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
329
330
331 [[image:image-20220522235639-5.png||_mstalt="432848"]]
332
333
334 * DS18B20 temp=0x0ADD/100=27.81℃
335
336 The last 2 bytes of data are meaningless
337
338
339
340 [[image:image-20220522235639-6.png||_mstalt="433212"]]
341
342
343 * External temperature= (0xF54F-65536)/100=-27.37℃
344
345 F54F :  (F54F & 8000 == 1) , temp = (F54F - 65536)/100 = 27.37℃
346
347 （0105 & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative）
348
349 The last 2 bytes of data are meaningless
350
351 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
352
353
354
355 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
356
357
358 (((
359 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:
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 ==== 2.4.6.3 Ext~=6, ADC Sensor(use with E2 Cable) ====
415
416
417 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
418
419 be used to power the external ADC sensor; user can control the power on time for this
420
421 (% style="color:blue" %)**sensor by setting:**
422
423 **AT+EXT=6,timeout**  (% style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
424
425 **For example:**
426
427 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
428
429
430 Or use **downlink command A2** to set the same.
431
432 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
433
434 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.
435
436 [[image:image-20220628150112-1.png||_mstalt="427414" height="241" width="285"]]
437
438
439 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
440
441 [[image:image-20220628150714-4.png||_mstalt="431054"]]
442
443
444 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.
445
446
447 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
448
449 [[image:image-20220628151005-5.png||_mstalt="429546"]]
450
451
452 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
453
454 [[image:image-20220628151056-6.png||_mstalt="431873"]]
455
456
457 3) Within range
458
459 [[image:image-20220628151143-7.png||_mstalt="431210"]]
460
461
462
463 ==== 2.4.6.4 Ext~=2 TMP117 Sensor((% style="display:none" %) (%%)Since Firmware v1.3)(% style="display:none" %) (%%) ====
464
465 [[image:image-20230717151328-8.png]]
466
467 (% style="display:none" %) (%%)
468
469
470
471 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
472
473 [[image:image-20220906102307-7.png||_mstalt="430443"]]
474
475
476 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**(% style="color:blue; display:none" %)** **
477
478 The external cable NE2 can be use for MOD4 and MOD8
479
480
481
482 ==== 2.4.6.5 Ext~=11 SHT31 Sensor ((% style="display:none" %) (%%)Since Firmware v1.4.1) ====
483
484
485
486 [[image:image-20230717151245-7.png]]
487
488 (% style="color:blue" %)**Ext=11,Temperature & Humidity Sensor(SHT31)：**
489
490 [[image:SHT31.png]]
491
492
493
494 ==== 2.4.6.6 Ext~=4 Interrupt Mode(Since Firmware v1.3) ====
495
496
497 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
498
499
500 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
501
502 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
503
504 In Open State, the power consumption is the same as if there is no probe
505
506 In Close state, the power consumption will be 3uA higher than normal.
507
508 [[image:image-20220906100852-1.png||_mstalt="429156" height="205" width="377"]]
509
510
511 Ext=4,Interrupt Sensor：
512
513 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:504px" %)
514 |(% style="width:101px" %)(((
515 **AT+EXT=4,1**
516 )))|(% style="width:395px" %)(((
517 **Sent uplink packet in both rising and falling interrupt**
518 )))
519 |(% style="width:101px" %)(((
520 **AT+EXT=4,2**
521 )))|(% style="width:395px" %)(((
522 **Sent uplink packet only in falling interrupt**
523 )))
524 |(% style="width:101px" %)(((
525 **AT+EXT=4,3**
526 )))|(% style="width:395px" %)(((
527 **Sent uplink packet only in rising interrupt**
528 )))
529
530 Trigger by falling edge:
531
532 [[image:image-20220906101145-2.png||_mstalt="428324"]]
533
534
535 Trigger by raising edge：
536
537 [[image:image-20220906101145-3.png||_mstalt="428688"]]
538
539
540
541 ==== 2.4.6.7 Ext~=8 Counting Mode(Since Firmware v1.3) ====
542
543
544 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
545
546
547 (% 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.
548
549 [[image:image-20220906101320-4.png||_mstalt="427336" height="366" width="698"]]
550
551
552 (% 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
553
554 [[image:image-20220906101320-5.png||_mstalt="427700" height="353" width="696"]]
555
556
557 Ext=8, Counting Sensor ( 4 bytes)：
558
559 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:330px" %)
560 |(% style="width:131px" %)(((
561 **AT+EXT=8,0**
562 )))|(% style="width:195px" %)(((
563 **Count at falling interrupt**
564 )))
565 |(% style="width:131px" %)(((
566 **AT+EXT=8,1**
567 )))|(% style="width:195px" %)(((
568 **Count at rising interrupt**
569 )))
570 |(% style="width:131px" %)(((
571 **AT+SETCNT=60**
572 )))|(% style="width:195px" %)(((
573 **Sent current count to 60**
574 )))
575
576 [[image:image-20220906101320-6.png||_mstalt="428064"]]
577
578
579 (% style="color:blue" %)**A2 downlink Command：**
580
581 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
582
583 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
584
585 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
586
587 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
588
589 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)
590
591
592 ==== 2.4.6.8 Ext~=10, E2 sensor (TMP117)with Unix Timestamp(Since firmware V1.3.2) ====
593
594
595 (((
596 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:
597 )))
598
599 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
600 |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
601 **Size(bytes)**
602 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
603 **2**
604 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
605 **2**
606 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
607 **2**
608 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
609 **1**
610 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
611 **4**
612 )))
613 |(% style="width:110px" %)(((
614 **Value**
615 )))|(% style="width:71px" %)(((
616 External temperature
617 )))|(% style="width:99px" %)(((
618 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
619 )))|(% style="width:132px" %)(((
620 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
621 )))|(% style="width:54px" %)(((
622 Status & Ext
623 )))|(% style="width:64px" %)(((
624 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
625 )))
626
627 * **Battery status & Built-in Humidity**
628
629 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:461px" %)
630 |=(% 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]
631 |(% style="width:67px" %)**Value**|(% style="width:256px" %)(((
632 BAT Status
633 00(b): Ultra Low ( BAT <= 2.50v)
634 01(b): Low  (2.50v <=BAT <= 2.55v)
635 10(b): OK   (2.55v <= BAT <=2.65v)
636 11(b): Good   (BAT >= 2.65v)
637 )))|(% style="width:132px" %)(((
638 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
639 )))
640
641 * **Status & Ext Byte**
642
643 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
644 |(% 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]**
645 |(% 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)
646
647 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
648 * (% 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.
649 * (% 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)
650
651 == 2.5 Show data on Datacake ==
652
653
654 (((
655 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:
656 )))
657
658
659 (((
660 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
661 )))
662
663 (((
664 (% 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.
665 )))
666
667
668 (((
669 Add Datacake:
670 )))
671
672
673 [[image:image-20220523000825-7.png||_mstalt="429884" height="262" width="583"]]
674
675
676
677 Select default key as Access Key:
678
679
680 [[image:image-20220523000825-8.png||_mstalt="430248" height="453" width="406"]]
681
682
683 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
684
685
686 [[image:image-20220523000825-9.png||_mstalt="430612" height="366" width="392"]]
687
688
689 [[image:image-20220523000825-10.png||_mstalt="450619" height="413" width="728"]]
690
691
692 == 2.6 Datalog Feature ==
693
694
695 (((
696 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.
697 )))
698
699
700 === 2.6.1 Ways to get datalog via LoRaWAN ===
701
702
703 There are two methods:
704
705 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
706
707
708 (% 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.
709
710
711 (% style="color:red" %)**Note for method 2:**
712
713 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
714 * 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.
715
716 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
717
718
719 [[image:image-20220703111700-2.png||_mstalt="426244" height="381" width="1119"]]
720
721
722 === 2.6.2 Unix TimeStamp ===
723
724
725 LHT65N uses Unix TimeStamp format based on
726
727
728 [[image:image-20220523001219-11.png||_mstalt="450450" height="97" width="627"]]
729
730
731
732 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
733
734 Below is the converter example
735
736 [[image:image-20220523001219-12.png||_mstalt="450827" height="298" width="720"]]
737
738
739 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
740
741
742 === 2.6.3 Set Device Time ===
743
744
745 (((
746 (% style="color:blue" %)**There are two ways to set device's time:**
747 )))
748
749 (((
750 **1.  Through LoRaWAN MAC Command (Default settings)**
751 )))
752
753 (((
754 User need to set SYNCMOD=1 to enable sync time via MAC command.
755 )))
756
757 (((
758 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).
759 )))
760
761 (((
762 (% 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.**
763 )))
764
765
766 (((
767 **2. Manually Set Time**
768 )))
769
770 (((
771 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
772 )))
773
774
775 === 2.6.4 Poll sensor value ===
776
777
778 User can poll sensor value based on timestamps from the server. Below is the downlink command.
779
780 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:428px" %)
781 |(% 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**
782 |(% style="width:58px" %)31|(% style="width:128px" %)Timestamp start|(% style="width:123px" %)Timestamp end|(% style="width:116px" %)Uplink Interval
783
784 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.
785
786 For example, downlink command (% _mstmutation="1" %)**31 5FC5F350 5FC6 0160 05**(%%)
787
788 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00's data
789
790 Uplink Internal =5s, means LHT65N will send one packet every 5s. range 5~~255s.
791
792
793 === 2.6.5 Datalog Uplink payload ===
794
795
796 The Datalog poll reply uplink will use below payload format.
797
798 **Retrieval data payload:**
799
800 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
801 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
802 **Size(bytes)**
803 )))|=(% 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**
804 |(% 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"]]
805
806 **Poll message flag & Ext:**
807
808 [[image:image-20221006192726-1.png||_mstalt="430508" height="112" width="754"]]
809
810 (% 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)
811
812 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
813
814 * Poll Message Flag is set to 1.
815
816 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
817
818 For example, in US915 band, the max payload for different DR is:
819
820 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
821
822 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
823
824 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
825
826 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
827
828 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
829
830
831 **Example:**
832
833 If LHT65N has below data inside Flash:
834
835 [[image:image-20230426171833-4.png]]
836
837
838 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
839
840 Where : Start time: 60065F97 = time 21/1/19 04:27:03
841
842 Stop time: 60066DA7= time 21/1/19 05:27:03
843
844
845 **LHT65N will uplink this payload.**
846
847 [[image:image-20220523001219-13.png||_mstalt="451204" height="421" style="text-align:left" width="727"]]
848
849
850 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
851
852 Where the first 11 bytes is for the first entry:
853
854 7FFF089801464160065F97
855
856 Ext sensor data=0x7FFF/100=327.67
857
858 Temp=0x088E/100=22.00
859
860 Hum=0x014B/10=32.6
861
862 poll message flag & Ext=0x41,means reply data,Ext=1
863
864 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
865
866
867 == 2.7 Alarm Mode & Feature "Multi sampling, one uplink" ==
868
869
870 (((
871 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.
872 )))
873
874 (((
875 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
876
877
878 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
879
880
881 **Internal GXHT30 temperature alarm(Acquisition time: fixed at one minute)**
882
883 (((
884 (% class="box infomessage" %)
885 (((
886 **AT+WMOD=3**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
887
888 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
889
890 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
891
892 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
893
894 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
895
896 **AT+LEDALARM=1** :       Enable LED visual Alarm.
897 )))
898 )))
899
900 (% style="color:#4f81bd" %)**Downlink Command:**
901
902 AT+WMOD=1:  A501  , AT+WMOD=0 :  A600
903
904 AT+CITEMP=1 : A60001
905
906 AT+ARTEMP=1,60  :  A70001003C
907
908 AT+ARTEMP=-16,60 :  A7FFF0003C
909
910 AT+LEDALARM=1  :  3601
911
912
913 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
914
915 Total bytes: 8 bytes
916
917 **Example: **AA0100010001003C
918
919 WMOD=01
920
921 CITEMP=0001
922
923 TEMPlow=0001
924
925 TEMPhigh=003C
926
927
928 **DS18B20 and TMP117 Threshold Alarm**
929
930 **~ AT+WMOD=1,60,-10,20**
931
932 (% style="color:#4f81bd" %)**Downlink Command:**
933
934 **Example: **A5013CFC180014
935
936 MOD=01
937
938 CITEMP=3C(S)
939
940 TEMPlow=FC18
941
942 TEMPhigh=0014
943
944
945 **Fluctuation alarm for DS18B20 and TMP117(Acquisition time: minimum 1s)**
946
947 **AT+WMOD=2,60,5** 
948
949 (% style="color:#4f81bd" %)**Downlink Command:**
950
951 **Example: **A5023C05
952
953 MOD=02
954
955 CITEMP=3C(S)
956
957 temperature fluctuation=05
958
959
960 **Sampling multiple times and uplink together**
961
962 **AT+WMOD=3,1,60,20,-16,32,1**   
963
964 Explain:
965
966 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3**
967 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
968 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.
969 * (% 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)
970 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
971 * (% 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.
972
973 (% style="color:#4f81bd" %)**Downlink Command:**
974
975 **Example: **A50301003C14FFF0002001
976
977 MOD=03
978
979 TEMP=DS18B20
980
981 CITEMP=003C(S)
982
983 Total number of acquisitions=14
984
985 TEMPlow=FFF0
986
987 TEMPhigh=0020
988
989 ARTEMP=01
990
991
992 **Uplink payload( Fport=3)**
993
994 **Example: CBEA**01**0992**//0A41//**09C4**
995
996 BatV=CBEA
997
998 TEMP=DS18B20
999
1000 Temp1=0992  ~/~/ 24.50℃
1001
1002 Temp2=0A41  ~/~/ 26.25℃
1003
1004 Temp3=09C4  ~/~/ 25.00℃
1005
1006 (% style="color:red" %)**Note: This uplink will automatically select the appropriate DR according to the data length**
1007
1008 (% style="color:red" %)** In this mode, the temperature resolution of ds18b20 is 0.25℃ to save power consumption**
1009 )))
1010
1011
1012 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
1013
1014
1015 (% class="box infomessage" %)
1016 (((
1017 (((
1018 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1019 )))
1020
1021 (((
1022 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1023 )))
1024
1025 (((
1026 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1027 )))
1028
1029 (((
1030 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
1031 )))
1032
1033 (((
1034 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1035 )))
1036 )))
1037
1038 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1039
1040 Total bytes: 8 bytes
1041
1042 **Example:**AA0100010001003C
1043
1044 WMOD=01
1045
1046 CITEMP=0001
1047
1048 TEMPlow=0001
1049
1050 TEMPhigh=003C
1051
1052
1053 == 2.8 LED Indicator ==
1054
1055
1056 The LHT65 has a triple color LED which for easy showing different stage .
1057
1058 While user press ACT button, the LED will work as per LED status with ACT button.
1059
1060 In a normal working state:
1061
1062 * For each uplink, the BLUE LED or RED LED will blink once.
1063 BLUE LED when external sensor is connected.
1064 * RED LED when external sensor is not connected
1065 * For each success downlink, the PURPLE LED will blink once
1066
1067 == 2.9 installation ==
1068
1069
1070 [[image:image-20220516231650-1.png||_mstalt="428597" height="436" width="428"]]
1071
1072
1073 = 3. Sensors and Accessories =
1074
1075 == 3.1 E2 Extension Cable ==
1076
1077
1078 [[image:image-20220619092222-1.png||_mstalt="429533" height="182" width="188"]][[image:image-20220619092313-2.png||_mstalt="430222" height="182" width="173"]]
1079
1080
1081 **1m long breakout cable for LHT65N. Features:**
1082
1083 * (((
1084 Use for AT Command, works for both LHT52/LHT65N
1085 )))
1086 * (((
1087 Update firmware for LHT65N, works for both LHT52/LHT65N
1088 )))
1089 * (((
1090 Supports ADC mode to monitor external ADC
1091 )))
1092 * (((
1093 Supports Interrupt mode
1094 )))
1095 * (((
1096 Exposed All pins from the LHT65N Type-C connector.
1097
1098
1099
1100 )))
1101
1102 [[image:image-20220619092421-3.png||_mstalt="430547" height="371" width="529"]]
1103
1104
1105 == 3.2 E3 Temperature Probe ==
1106
1107
1108 [[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"]]
1109
1110
1111 Temperature sensor with 2 meters cable long
1112
1113 * Resolution: 0.0625 °C
1114 * ±0.5°C accuracy from -10°C to +85°C
1115 * ±2°C accuracy from -55°C to +125°C
1116 * Operating Range: -40 ~~ 125 °C
1117 * Working voltage 2.35v ~~ 5v
1118
1119 == 3.3 E31F Temperature Probe ==
1120
1121
1122 [[image:65N-E31F-1.jpg||height="169" width="170"]] [[image:image-20230717151424-9.png||height="221" width="204"]](% style="display:none" %)
1123
1124
1125 Temperature sensor with 1 meters cable long
1126
1127
1128 **Built-in Temperature Sensor:**
1129
1130 * Resolution: 0.01 °C
1131 * Accuracy Tolerance : Typ ±0.3 °C
1132 * Long Term Drift: < 0.02 °C/yr
1133 * Operating Range: -40 ~~ 80 °C
1134
1135 **Built-in Humidity Sensor:**
1136
1137 * Resolution: 0.04 % RH
1138 * Accuracy Tolerance : Typ ±3 % RH
1139 * Long Term Drift: < 0.02 °C/yr
1140 * Operating Range: 0 ~~ 96 % RH
1141
1142 **External Temperature Sensor :**
1143
1144 * Resolution: 0.01 °C
1145 * Accuracy Tolerance : Typical ±0.3 °C
1146 * Long Term Drift: < 0.02 °C/yr
1147 * Operating Range: -40 ~~ 125 °C
1148
1149 **External Humidity Sensor :**
1150
1151 * Resolution: 0.04 % RH
1152 * Accuracy Tolerance : Typ ±3 % RH
1153 * Long Term Drift: < 0.02 °C/yr
1154 * Operating Range: 0 ~~ 96 % RH
1155
1156 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1157
1158
1159 (((
1160 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1161 )))
1162
1163 * (((
1164 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1165 )))
1166
1167 * (((
1168 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1169 )))
1170
1171 (((
1172 There are two kinds of commands to configure LHT65N, they are:
1173 )))
1174
1175 * (((
1176 (% style="color:#4f81bd" %)**General Commands**.
1177 )))
1178
1179 (((
1180 These commands are to configure:
1181 )))
1182
1183 1. (((
1184 General system settings like: uplink interval.
1185 )))
1186 1. (((
1187 LoRaWAN protocol & radio-related commands.
1188 )))
1189
1190 (((
1191 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]]
1192 )))
1193
1194 * (((
1195 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1196 )))
1197
1198 (((
1199 These commands are only valid for LHT65N, as below:
1200 )))
1201
1202
1203 == 4.1 Set Transmit Interval Time ==
1204
1205
1206 Feature: Change LoRaWAN End Node Transmit Interval.
1207
1208
1209 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1210
1211 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:501px" %)
1212 |(% 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**
1213 |(% style="width:155px" %)AT+TDC=?|(% style="width:162px" %)Show current transmit Interval|(% style="width:177px" %)30000 OK the interval is 30000ms = 30s
1214 |(% style="width:155px" %)AT+TDC=60000|(% style="width:162px" %)Set Transmit Interval|(% style="width:177px" %)OK Set transmit interval to 60000ms = 60 seconds
1215
1216 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1217
1218 Format: Command Code (0x01) followed by 3 bytes time value.
1219
1220 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1221
1222 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1223
1224 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1225
1226 == 4.2 Set External Sensor Mode ==
1227
1228
1229 Feature: Change External Sensor Mode.
1230
1231 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1232
1233 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:468px" %)
1234 |(% 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**
1235 |(% style="width:155px" %)AT+EXT=?|(% style="width:151px" %)Get current external sensor mode|(% style="width:158px" %)1 OK External Sensor mode =1
1236 |(% style="width:155px" %)AT+EXT=1|(% colspan="2" rowspan="1" style="width:309px" %)Set external sensor mode to 1
1237 |(% style="width:155px" %)AT+EXT=9|(% colspan="2" rowspan="1" style="width:309px" %)Set to external DS18B20 with timestamp
1238
1239 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1240
1241 Total bytes: 2 ~~ 5 bytes
1242
1243 **Example:**
1244
1245 * 0xA201: Set external sensor type to E1
1246
1247 * 0xA209: Same as AT+EXT=9
1248
1249 * 0xA20702003c: Same as AT+SETCNT=60
1250
1251 == 4.3 Enable/Disable uplink Temperature probe ID ==
1252
1253
1254 (((
1255 Feature: If PID is enabled, device will send the temperature probe ID on:
1256 )))
1257
1258 * (((
1259 First Packet after OTAA Join
1260 )))
1261 * (((
1262 Every 24 hours since the first packet.
1263 )))
1264
1265 (((
1266 PID is default set to disable (0)
1267
1268
1269 )))
1270
1271 (% style="color:#4f81bd" %)**AT Command:**
1272
1273 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:381px" %)
1274 |(% 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**
1275 |(% style="width:155px" %)AT+PID=1|(% style="width:136px" %)Enable PID uplink|(% style="width:86px" %)OK
1276
1277 (% style="color:#4f81bd" %)**Downlink Command:**
1278
1279 * **0xA800**  **~-~->** AT+PID=0
1280 * **0xA801**     **~-~->** AT+PID=1
1281
1282 == 4.4 Set Password ==
1283
1284
1285 Feature: Set device password, max 9 digits
1286
1287 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1288
1289 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:372px" %)
1290 |(% 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**
1291 |(% style="width:155px" %)AT+PWORD=?|(% style="width:124px" %)Show password|(% style="width:86px" %)(((
1292 123456
1293
1294 OK
1295 )))
1296 |(% style="width:155px" %)AT+PWORD=999999|(% style="width:124px" %)Set password|(% style="width:86px" %)OK
1297
1298 (% style="color:#4f81bd" %)**Downlink Command:**
1299
1300 No downlink command for this feature.
1301
1302
1303 == 4.5 Quit AT Command ==
1304
1305
1306 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1307
1308 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1309
1310 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:433px" %)
1311 |(% 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**
1312 |(% style="width:155px" %)AT+DISAT|(% style="width:191px" %)Quit AT Commands mode|(% style="width:86px" %)OK
1313
1314 (% style="color:#4f81bd" %)**Downlink Command:**
1315
1316 No downlink command for this feature.
1317
1318
1319 == 4.6 Set to sleep mode ==
1320
1321
1322 Feature: Set device to sleep mode
1323
1324 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1325 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1326
1327 (% style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1328
1329 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:513px" %)
1330 |(% 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**
1331 |(% style="width:155px" %)AT+SLEEP|(% style="width:139px" %)Set to sleep mode|(% style="width:213px" %)(((
1332 Clear all stored sensor data…
1333
1334 OK
1335 )))
1336
1337 (% style="color:#4f81bd" %)**Downlink Command:**
1338
1339 * There is no downlink command to set to Sleep mode.
1340
1341 == 4.7 Set system time ==
1342
1343
1344 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1345
1346 (% style="color:#4f81bd" %)**AT Command:**
1347
1348 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:506px" %)
1349 |(% style="background-color:#d9e2f3; color:#0070c0; width:188px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:318px" %)**Function**
1350 |(% style="width:154px" %)AT+TIMESTAMP=1611104352|(% style="width:285px" %)(((
1351 OK
1352
1353 Set System time to 2021-01-20 00:59:12
1354 )))
1355
1356 (% style="color:#4f81bd" %)**Downlink Command:**
1357
1358 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1359
1360
1361 == 4.8 Set Time Sync Mode ==
1362
1363
1364 (((
1365 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1366 )))
1367
1368 (((
1369 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.
1370 )))
1371
1372 (% style="color:#4f81bd" %)**AT Command:**
1373
1374 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:475px" %)
1375 |(% style="background-color:#d9e2f3; color:#0070c0; width:156px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:315px" %)**Function**
1376 |(% style="width:156px" %)AT+SYNCMOD=1|(% style="width:315px" %)Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
1377
1378 (% style="color:#4f81bd" %)**Downlink Command:**
1379
1380 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1381 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1382
1383
1384 == 4.9 Set Time Sync Interval ==
1385
1386
1387 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1388
1389 (% style="color:#4f81bd" %)**AT Command:**
1390
1391 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:472px" %)
1392 |(% style="background-color:#d9e2f3; color:#0070c0; width:158px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:314px" %)**Function**
1393 |(% style="width:156px" %)AT+SYNCTDC=0x0A |(% style="width:311px" %)Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
1394
1395 (% style="color:#4f81bd" %)**Downlink Command:**
1396
1397 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1398
1399
1400 == 4.10 Print data entries base on page. ==
1401
1402
1403 Feature: Print the sector data from start page to stop page (max is 416 pages).
1404
1405 (% style="color:#4f81bd" %)**AT Command: AT+PDTA**
1406
1407 [[image:image-20230426164330-2.png]]
1408
1409 (% style="color:#4f81bd" %)**Downlink Command:**
1410
1411 No downlink commands for feature
1412
1413
1414 == 4.11 Print last few data entries. ==
1415
1416
1417 Feature: Print the last few data entries
1418
1419 (% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1420
1421 [[image:image-20230426164932-3.png]]
1422
1423 (% style="color:#4f81bd" %)**Downlink Command:**
1424
1425 No downlink commands for feature
1426
1427
1428 == 4.12 Clear Flash Record ==
1429
1430
1431 Feature: Clear flash storage for data log feature.
1432
1433 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1434
1435 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:503px" %)
1436 |(% 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**
1437 |(% style="width:155px" %)AT+CLRDTA |(% style="width:134px" %)Clear date record|(% style="width:209px" %)(((
1438 Clear all stored sensor data…
1439
1440 OK
1441 )))
1442
1443 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1444
1445 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1446
1447 == 4.13 Auto Send None-ACK messages ==
1448
1449
1450 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.
1451
1452 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1453
1454 The default factory setting is 0
1455
1456 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:367px" %)
1457 |=(% 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**
1458 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1459
1460 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1461
1462 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1463
1464 == 4.14 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm(Since firmware 1.3.0) ==
1465
1466
1467 Feature: Set internal and external temperature sensor alarms.
1468
1469 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
1470 |=(% 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**
1471 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1472
1473 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1474
1475 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1476
1477 0): Cancel
1478
1479 1): Threshold alarm
1480
1481 2): Fluctuation alarm
1482
1483 3):Sampling multiple times and uplink together
1484
1485
1486 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1487
1488 (% 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.**
1489
1490
1491 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1492
1493 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1494
1495 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1496
1497
1498 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.
1499
1500 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1501
1502 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1503
1504
1505 3): If Alarm Mode is set to 3:
1506
1507 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3**
1508 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
1509 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.
1510 * (% 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)
1511 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
1512 * (% 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.
1513
1514 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1515
1516 0xA5 00 ~-~- AT+WMOD=0.
1517
1518 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 )
1519
1520 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))
1521
1522 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1523
1524 0xA5 03 01 00 3C 14 FF F0 00 20 01~-~-AT+WMOD=3,1,60,20,-16,32,1
1525
1526 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.
1527
1528
1529 = 5. Battery & How to replace =
1530
1531 == 5.1 Battery Type ==
1532
1533
1534 (((
1535 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.
1536 )))
1537
1538 (((
1539 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1540
1541
1542 [[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]
1543 )))
1544
1545 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1546
1547
1548 == 5.2 Replace Battery ==
1549
1550
1551 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.
1552
1553 [[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]
1554
1555
1556 == 5.3 Battery Life Analyze ==
1557
1558
1559 (((
1560 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:
1561 [[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]]
1562 )))
1563
1564
1565 (((
1566 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]]
1567 )))
1568
1569
1570 = 6. FAQ =
1571
1572 == 6.1 How to use AT Command? ==
1573
1574
1575 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.
1576
1577 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1578
1579
1580 **Connection:**
1581
1582 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1583 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1584 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1585
1586 (((
1587 (% _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)**
1588
1589 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.
1590 )))
1591
1592
1593 Input password and ATZ to activate LHT65N,As shown below:
1594
1595 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1596
1597
1598 AT Command List is as below:
1599
1600 AT+<CMD>? :  Help on <CMD>
1601
1602 AT+<CMD> :  Run <CMD>
1603
1604 AT+<CMD>=<value> :  Set the value
1605
1606 AT+<CMD>=? :  Get the value
1607
1608 AT+DEBUG:  Set more info output
1609
1610 ATZ:  Trig a reset of the MCU
1611
1612 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1613
1614 AT+DEUI:  Get or Set the Device EUI
1615
1616 AT+DADDR:  Get or Set the Device Address
1617
1618 AT+APPKEY:  Get or Set the Application Key
1619
1620 AT+NWKSKEY:  Get or Set the Network Session Key
1621
1622 AT+APPSKEY:  Get or Set the Application Session Key
1623
1624 AT+APPEUI:  Get or Set the Application EUI
1625
1626 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1627
1628 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1629
1630 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1631
1632 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1633
1634 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1635
1636 AT+RX2FQ:  Get or Set the Rx2 window frequency
1637
1638 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1639
1640 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1641
1642 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1643
1644 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1645
1646 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1647
1648 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1649
1650 AT+NWKID:  Get or Set the Network ID
1651
1652 AT+FCU:  Get or Set the Frame Counter Uplink
1653
1654 AT+FCD:  Get or Set the Frame Counter Downlink
1655
1656 AT+CLASS:  Get or Set the Device Class
1657
1658 AT+JOIN:  Join network
1659
1660 AT+NJS:  Get the join status
1661
1662 AT+SENDB:  Send hexadecimal data along with the application port
1663
1664 AT+SEND:  Send text data along with the application port
1665
1666 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1667
1668 AT+RECV:  Print last received data in raw format
1669
1670 AT+VER:  Get current image version and Frequency Band
1671
1672 AT+CFM:  Get or Set the confirmation mode (0-1)
1673
1674 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1675
1676 AT+SNR:  Get the SNR of the last received packet
1677
1678 AT+RSSI:  Get the RSSI of the last received packet
1679
1680 AT+TDC:  Get or set the application data transmission interval in ms
1681
1682 AT+PORT:  Get or set the application port
1683
1684 AT+DISAT:  Disable AT commands
1685
1686 AT+PWORD: Set password, max 9 digits
1687
1688 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1689
1690 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1691
1692 AT+PDTA:  Print the sector data from start page to stop page
1693
1694 AT+PLDTA:  Print the last few sets of data
1695
1696 AT+CLRDTA:  Clear the storage, record position back to 1st
1697
1698 AT+SLEEP:  Set sleep mode
1699
1700 AT+EXT:  Get or Set external sensor model
1701
1702 AT+BAT:  Get the current battery voltage in mV
1703
1704 AT+CFG:  Print all configurations
1705
1706 AT+WMOD:  Get or Set Work Mode
1707
1708 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1709
1710 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1711
1712 AT+SETCNT:  Set the count at present
1713
1714 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1715
1716 AT+RPL:  Get or set response level
1717
1718 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1719
1720 AT+LEAPSEC:  Get or Set Leap Second
1721
1722 AT+SYNCMOD:  Get or Set time synchronization method
1723
1724 AT+SYNCTDC:  Get or set time synchronization interval in day
1725
1726 AT+PID:  Get or set the PID
1727
1728
1729 == 6.2 Where to use AT commands and Downlink commands ==
1730
1731
1732 **AT commands: **
1733
1734 [[image:image-20220620153708-1.png||_mstalt="429806" height="603" width="723"]]
1735
1736
1737 **Downlink commands:**
1738
1739
1740 (% style="color:blue" %)**TTN:**
1741
1742 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1743
1744
1745
1746 (% style="color:blue" %)**Helium: **
1747
1748 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1749
1750
1751
1752 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1753
1754
1755 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1756
1757
1758 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1759
1760
1761
1762 (% style="color:blue" %)**Aws:**
1763
1764 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1765
1766
1767 == 6.3 How to change the uplink interval? ==
1768
1769
1770 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);"]]
1771
1772
1773 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1774
1775
1776 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1777
1778 [[image:1655802313617-381.png||_mstalt="293917"]]
1779
1780
1781 (((
1782 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.
1783 )))
1784
1785
1786 Input password and ATZ to activate LHT65N, As shown below:
1787
1788 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1789
1790
1791 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1792
1793
1794 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1795
1796
1797 (% 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.
1798
1799 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1800
1801
1802
1803 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): wiring method.(% style="display:none" %)
1804
1805 First connect the four lines;(% style="display:none" %)
1806
1807 [[image:image-20220621170938-1.png||_mstalt="431340" height="413" width="419"]],(% style="display:none" %)
1808
1809
1810 Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1811
1812 [[image:image-20220621170938-2.png||_mstalt="431704"]]
1813
1814
1815
1816 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1817
1818 [[image:image-20220615171334-6.png||_mstalt="431028"]]
1819
1820
1821 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1822
1823
1824 When this interface appears, it indicates that the download has been completed.
1825
1826 [[image:image-20220620160723-8.png||_mstalt="430703"]]
1827
1828
1829 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1830
1831
1832 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1833
1834
1835 [[image:image-20220623110706-1.png||_mstalt="427869"]]
1836
1837
1838 **UART Port of LHT65N:**
1839
1840 * (% class="mark" %)**PB0: RXD**
1841 * (% class="mark" %)**PB1: TXD**
1842 * (% class="mark" %)**GND**
1843
1844 [[image:image-20220623112117-4.png||_mstalt="428350" height="459" width="343"]]
1845
1846
1847 (((
1848 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.
1849 )))
1850
1851
1852 Input password and ATZ to activate LHT65N,As shown below:
1853
1854 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1855
1856
1857 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1858
1859
1860 [[image:image-20220623110706-1.png||_mstalt="427869"]]
1861
1862
1863 (% 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.
1864
1865 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1866
1867
1868
1869 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): wiring method.(% style="display:none" %)
1870
1871 First connect the four lines;
1872
1873 [[image:image-20220623113959-5.png||_mstalt="433485" height="528" width="397"]]
1874
1875 Connect A8 and GND with Dupont wire for a while and then separate, enter reset mode
1876
1877
1878
1879 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1880
1881 [[image:image-20220615171334-6.png||_mstalt="431028"]]
1882
1883
1884 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1885
1886
1887 When this interface appears, it indicates that the download has been completed.
1888
1889 [[image:image-20220620160723-8.png||_mstalt="430703"]]
1890
1891
1892 Finally,Disconnect 3.3v, Connect A8 and GND with Dupont wire for a while and then separate, exit reset mode
1893
1894
1895 == 6.8 Why can't I see the datalog information ==
1896
1897
1898 ~1. The time is not aligned, and the correct query command is not used.
1899
1900 2. Decoder error, did not parse the datalog data, the data was filtered.
1901
1902
1903 = 7. Order Info =
1904
1905
1906 Part Number: (% style="color:#4f81bd" %)** LHT65N-XX-YY**
1907
1908 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1909
1910 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1911 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1912 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1913 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1914 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1915 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**US915**(%%): LoRaWAN US915 band
1916 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1917 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1918
1919 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1920
1921 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1922
1923 = 8. Packing Info =
1924
1925
1926 **Package Includes**:
1927
1928 * LHT65N Temperature & Humidity Sensor x 1
1929 * Optional external sensor
1930
1931 = 9. Reference material =
1932
1933
1934 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
1935
1936 = 10. FCC Warning =
1937
1938
1939 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1940
1941 (1) This device may not cause harmful interference;
1942
1943 (2) this device must accept any interference received, including interference that may cause undesired operation.

Applications

Navigation

Copyright ©2010-2022 Dragino Technology Co., LTD. All rights reserved
Dragino Wiki v2.0