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Version 210.13 by Xiaoling on 2022/10/26 17:13
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9 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
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11 {{toc/}}
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15
16
17 = 1. Introduction =
18
19
20 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
21
22
23 (((
24 The Dragino LHT65N 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.**
25 )))
26
27 (((
28 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.
29 )))
30
31 (((
32 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
33 )))
34
35 (((
36 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
37 )))
38
39 (((
40 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.
41 )))
42
43 (((
44 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
45 )))
46
47
48
49 == 1.2 Features ==
50
51
52 * Wall mountable
53 * LoRaWAN v1.0.3 Class A protocol
54 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
55 * AT Commands to change parameters
56 * Remote configure parameters via LoRaWAN Downlink
57 * Firmware upgradeable via program port
58 * Built-in 2400mAh battery for up to 10 years of use.
59 * Built-in Temperature & Humidity sensor
60 * Optional External Sensors
61 * Tri-color LED to indicate working status
62 * Datalog feature (Max 3328 records)
63
64 == 1.3 Specification ==
65
66
67 (% style="color:#037691" %)**Built-in Temperature Sensor:**
68
69 * Resolution: 0.01 °C
70 * Accuracy Tolerance : Typ ±0.3 °C
71 * Long Term Drift: < 0.02 °C/yr
72 * Operating Range: -40 ~~ 85 °C
73
74 (% style="color:#037691" %)**Built-in Humidity Sensor:**
75
76 * Resolution: 0.04 %RH
77 * Accuracy Tolerance : Typ ±3 %RH
78 * Long Term Drift: < 0.02 °C/yr
79 * Operating Range: 0 ~~ 96 %RH
80
81 (% style="color:#037691" %)**External Temperature Sensor:**
82
83 * Resolution: 0.0625 °C
84 * ±0.5°C accuracy from -10°C to +85°C
85 * ±2°C accuracy from -55°C to +125°C
86 * Operating Range: -55 °C ~~ 125 °C
87
88 = 2. Connect LHT65N to IoT Server =
89
90
91 == 2.1 How does LHT65N work? ==
92
93
94 (((
95 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.
96 )))
97
98 (((
99 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.
100 )))
101
102
103
104 == 2.2 How to Activate LHT65N? ==
105
106
107 (((
108 The LHT65N has two working modes:
109 )))
110
111 * (((
112 (% 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.
113 )))
114 * (((
115 (% 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. 
116 )))
117
118 (((
119 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
120 )))
121
122
123 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
124
125 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
126
127
128
129 == 2.3 Example to join LoRaWAN network ==
130
131
132 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
133 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.
134
135
136 (% _mstvisible="1" class="wikigeneratedid" %)
137 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
138
139
140 (((
141 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:
142 )))
143
144
145
146 === 2.3.1 Step 1: Create Device n TTN ===
147
148
149 (((
150 Create a device in TTN V3 with the OTAA keys from LHT65N.
151 )))
152
153 (((
154 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
155 )))
156
157 [[image:image-20220617150003-1.jpeg]]
158
159 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
160
161 Add APP EUI in the application.
162
163
164 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
165
166
167 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
168
169
170 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
171
172
173
174 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
175
176
177 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
178
179
180 Input APP EUI,  APP KEY and DEV EUI:
181
182
183 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
184
185
186
187
188 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
189
190
191 (((
192 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.
193 )))
194
195 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
196
197
198
199 == 2.4 Uplink Payload   ( Fport~=2) ==
200
201
202 (((
203 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% _mstvisible="3" style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
204 )))
205
206 (((
207 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
208 )))
209
210 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:390px" %)
211 |=(% style="width: 60px;" %)(((
212 **Size(bytes)**
213 )))|=(% style="width: 30px;" %)(((
214 **2**
215 )))|=(% style="width: 100px;" %)(((
216 **2**
217 )))|=(% style="width: 100px;" %)(((
218 **2**
219 )))|=(% style="width: 50px;" %)(((
220 **1**
221 )))|=(% style="width: 50px;" %)(((
222 **4**
223 )))
224 |(% style="width:97px" %)(((
225 **Value**
226 )))|(% style="width:39px" %)(((
227 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
228 )))|(% style="width:100px" %)(((
229 (((
230 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
231 )))
232 )))|(% style="width:77px" %)(((
233 (((
234 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
235 )))
236 )))|(% style="width:47px" %)(((
237 [[Ext>>||anchor="H2.4.5Ext23"]] #
238 )))|(% style="width:51px" %)(((
239 [[Ext value>>||anchor="H2.4.6Extvalue"]]
240 )))
241
242 * The First 6 bytes: has fix meanings for every LHT65N.
243 * The 7th byte (EXT #): defines the external sensor model.
244 * The 8(% _msthash="734578" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) ~~ 11(% _msthash="734579" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) byte: the value for external sensor value. The definition is based on external sensor type. (If EXT=0, there won't be these four bytes.)
245
246 === 2.4.1 Decoder in TTN V3 ===
247
248
249 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.
250
251 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]]
252
253
254 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
255
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 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
264
265
266 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
267
268
269 Check the battery voltage for LHT65N.
270
271 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
272 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
273
274 === 2.4.3 Built-in Temperature ===
275
276
277 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
278
279 * Temperature:  0x0ABB/100=27.47℃
280
281 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
282
283 * Temperature:  (0xF5C6-65536)/100=-26.18℃
284
285 === 2.4.4 Built-in Humidity ===
286
287
288 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
289
290 * Humidity:    0x025C/10=60.4%
291
292 === 2.4.5 Ext # ===
293
294
295 Bytes for External Sensor:
296
297 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
298
299
300
301 === 2.4.6 Ext value ===
302
303
304 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
305
306
307 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
308
309
310 * DS18B20 temp=0x0ADD/100=27.81℃
311
312 The last 2 bytes of data are meaningless
313
314 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
315
316
317 * External temperature= (0xF54F-65536)/100=-27.37℃
318
319 The last 2 bytes of data are meaningless
320
321 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
322
323
324
325 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
326
327
328 (((
329 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:
330 )))
331
332 (((
333
334 )))
335
336 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)
337 |=(% style="width: 50px;" %)(((
338 **Size(bytes)**
339 )))|=(% style="width: 70px;" %)(((
340 **2**
341 )))|=(% style="width: 120px;" %)(((
342 **2**
343 )))|=(% style="width: 120px;" %)(((
344 **2**
345 )))|=(% style="width: 50px;" %)(((
346 **1**
347 )))|=(% style="width: 70px;" %)(((
348 **4**
349 )))
350 |(% style="width:110px" %)(((
351 **Value**
352 )))|(% style="width:71px" %)(((
353 [[External temperature>>||anchor="H4.2SetExternalSensorMode"]]
354 )))|(% style="width:99px" %)(((
355 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
356 )))|(% style="width:132px" %)(((
357 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
358 )))|(% style="width:54px" %)(((
359 Status & Ext
360 )))|(% style="width:64px" %)(((
361 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
362 )))
363
364 * **Battery status & Built-in Humidity**
365
366 (% _mstvisible="1" border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:461px" %)
367 |=(% style="width: 67px;" %)Bit(bit)|=(% style="width: 256px;" %)[15:14]|=(% style="width: 132px;" %)[11:0]
368 |(% style="width:67px" %)Value|(% style="width:256px" %)(((
369 BAT Status
370 00(b): Ultra Low ( BAT <= 2.50v)
371 01(b): Low  (2.50v <=BAT <= 2.55v)
372 10(b): OK   (2.55v <= BAT <=2.65v)
373 11(b): Good   (BAT >= 2.65v)
374 )))|(% style="width:132px" %)(((
375 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
376 )))
377
378 * **Status & Ext Byte**
379
380 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
381 |=(% scope="row" style="width: 60px;" %)**Bits**|(% style="width:90px" %)**7**|(% style="width:100px" %)**6**|(% style="width:90px" %)**5**|(% style="width:100px" %)**4**|(% style="width:60px" %)**[3:0]**
382 |=(% 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)
383
384 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
385 * (% 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.
386 * (% 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)
387
388 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
389
390
391 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
392
393 be used to power the external ADC sensor; user can control the power on time for this
394
395 (% style="color:blue" %)**sensor by setting:**
396
397 **AT+EXT=6,timeout**  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
398
399 **For example:**
400
401 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
402
403
404 Or use **downlink command A2** to set the same.
405
406 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
407
408 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.
409
410 [[image:image-20220628150112-1.png||height="241" width="285"]]
411
412
413 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
414
415 [[image:image-20220628150714-4.png]]
416
417
418 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.
419
420
421 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
422
423 [[image:image-20220628151005-5.png]]
424
425
426 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
427
428 [[image:image-20220628151056-6.png]]
429
430
431 3) Within range
432
433 [[image:image-20220628151143-7.png]]
434
435
436
437 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （Since Firmware v1.3） ====
438
439
440 [[image:image-20220927095645-1.png||height="534" width="460"]]
441
442
443 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
444
445 [[image:image-20220906102307-7.png]]
446
447
448 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
449
450 The external cable NE2 can be use for MOD4 and MOD8
451
452
453
454 ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
455
456
457 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
458
459
460 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
461
462 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
463
464 In Open State, the power consumption is the same as if there is no probe
465
466 In Close state, the power consumption will be 3uA higher than normal.
467
468 [[image:image-20220906100852-1.png||height="205" width="377"]]
469
470
471 Ext=4,Interrupt Sensor：
472
473 (% border="1.5" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:478px" %)
474 |(% style="width:101px" %)(((
475 AT+EXT=4,1
476 )))|(% style="width:373px" %)(((
477 Sent uplink packet in both rising and falling interrupt
478 )))
479 |(% style="width:101px" %)(((
480 AT+EXT=4,2
481 )))|(% style="width:373px" %)(((
482 Sent uplink packet only in falling interrupt
483 )))
484 |(% style="width:101px" %)(((
485 AT+EXT=4,3
486 )))|(% style="width:373px" %)(((
487 Sent uplink packet only in rising interrupt
488 )))
489
490 Trigger by falling edge:
491
492 [[image:image-20220906101145-2.png]]
493
494
495 Trigger by raising edge：
496
497 [[image:image-20220906101145-3.png]]
498
499
500
501
502 ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
503
504
505 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
506
507
508 (% 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.
509
510 [[image:image-20220906101320-4.png||height="366" width="698"]]
511
512
513 (% 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
514
515 [[image:image-20220906101320-5.png||height="353" width="696"]]
516
517
518 Ext=8, Counting Sensor ( 4 bytes)：
519
520 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
521 |(% style="width:138px" %)(((
522 AT+EXT=8,0
523 )))|(% style="width:240px" %)(((
524 Count at falling interrupt
525 )))
526 |(% style="width:138px" %)(((
527 AT+EXT=8,1
528 )))|(% style="width:240px" %)(((
529 Count at rising interrupt
530 )))
531 |(% style="width:138px" %)(((
532 AT+SETCNT=60
533 )))|(% style="width:240px" %)(((
534 Sent current count to 60
535 )))
536
537 [[image:image-20220906101320-6.png]]
538
539
540 (% style="color:blue" %)**A2 downlink Command：**
541
542 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
543
544 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
545
546 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
547
548 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
549
550 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)
551
552
553
554 == 2.5 Show data on Datacake ==
555
556
557 (((
558 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:
559 )))
560
561 (((
562
563 )))
564
565 (((
566 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
567 )))
568
569 (((
570 (% 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.
571 )))
572
573 (((
574
575 )))
576
577 (((
578 Add Datacake:
579 )))
580
581
582 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
583
584
585
586 Select default key as Access Key:
587
588
589 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
590
591
592 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
593
594
595 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
596
597
598 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
599
600
601
602 == 2.6 Datalog Feature ==
603
604
605 (((
606 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.
607 )))
608
609
610
611 === 2.6.1 Ways to get datalog via LoRaWAN ===
612
613
614 There are two methods:
615
616 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
617
618
619 (% 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.
620
621 (% style="color:red" %)**Note for method 2:**
622
623 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
624 * 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.
625
626 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
627
628
629 [[image:image-20220703111700-2.png||height="381" width="1119"]]
630
631
632 === 2.6.2 Unix TimeStamp ===
633
634
635 LHT65N uses Unix TimeStamp format based on
636
637
638 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
639
640
641
642 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
643
644 Below is the converter example
645
646 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
647
648 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
649
650
651
652 === 2.6.3 Set Device Time ===
653
654
655 (((
656 (% style="color:blue" %)**There are two ways to set device's time:**
657 )))
658
659 (((
660 **1.  Through LoRaWAN MAC Command (Default settings)**
661 )))
662
663 (((
664 User need to set SYNCMOD=1 to enable sync time via MAC command.
665 )))
666
667 (((
668 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).
669 )))
670
671 (((
672 (% 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.**
673 )))
674
675 (((
676
677 )))
678
679 (((
680 **2. Manually Set Time**
681 )))
682
683 (((
684 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
685 )))
686
687
688
689 === 2.6.4 Poll sensor value ===
690
691
692 User can poll sensor value based on timestamps from the server. Below is the downlink command.
693
694 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
695
696
697 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.
698
699 For example, downlink command **31 5FC5F350 5FC6 0160 05**
700
701 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
702
703 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
704
705
706
707 === 2.6.5 Datalog Uplink payload ===
708
709
710 The Datalog poll reply uplink will use below payload format.
711
712 **Retrieval data payload:**
713
714 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)
715 |=(% style="width: 60px;" %)(((
716 **Size(bytes)**
717 )))|=(% style="width: 90px;" %)**2**|=(% style="width: 90px;" %)**2**|=(% style="width: 70px;" %)**2**|=(% style="width: 100px;" %)**1**|=(% style="width: 70px;" %)**4**
718 |(% 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"]]
719
720 **Poll message flag & Ext:**
721
722
723 [[image:image-20221006192726-1.png||height="112" width="754"]]
724
725 (% 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)
726
727 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
728
729 * Poll Message Flag is set to 1.
730
731 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
732
733 For example, in US915 band, the max payload for different DR is:
734
735 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
736
737 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
738
739 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
740
741 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
742
743 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
744
745
746 **Example:**
747
748 If LHT65N has below data inside Flash:
749
750 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
751
752
753 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
754
755 Where : Start time: 60065F97 = time 21/1/19 04:27:03
756
757 Stop time: 60066DA7= time 21/1/19 05:27:03
758
759
760 **LHT65N will uplink this payload.**
761
762 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
763
764
765 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
766
767 Where the first 11 bytes is for the first entry:
768
769 7FFF089801464160065F97
770
771 Ext sensor data=0x7FFF/100=327.67
772
773 Temp=0x0898/100=22.00
774
775 Hum=0x0146/10=32.6
776
777 poll message flag & Ext=0x41,means reply data,Ext=1
778
779 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
780
781
782
783 == 2.7 Alarm Mode ==
784
785
786 (((
787 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.
788 )))
789
790 (((
791 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
792
793
794
795 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
796
797
798 (((
799 (% class="box infomessage" %)
800 (((
801 **AT+WMOD=3,**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
802
803 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
804
805 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
806
807 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
808
809 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
810
811 **AT+LEDALARM=1** :       Enable LED visual Alarm.
812 )))
813 )))
814
815
816
817 )))
818
819 (((
820 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
821
822
823 )))
824
825 (% _mstvisible="1" class="box infomessage" %)
826 (((
827 (((
828 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
829 )))
830
831 (((
832 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
833 )))
834
835 (((
836 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
837 )))
838
839 (((
840 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
841 )))
842
843 (((
844 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
845 )))
846 )))
847
848 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
849
850 Total bytes: 8 bytes
851
852 **Example:**AA0100010001003C
853
854 WMOD=01
855
856 CITEMP=0001
857
858 TEMPlow=0001
859
860 TEMPhigh=003C
861
862
863
864 == 2.8 LED Indicator ==
865
866
867 The LHT65 has a triple color LED which for easy showing different stage .
868
869 While user press ACT button, the LED will work as per LED status with ACT button.
870
871 In a normal working state:
872
873 * For each uplink, the BLUE LED or RED LED will blink once.
874 BLUE LED when external sensor is connected.
875 * RED LED when external sensor is not connected
876 * For each success downlink, the PURPLE LED will blink once
877
878 == 2.9 installation ==
879
880
881 (% _mstvisible="1" %)
882 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
883
884
885
886 = 3. Sensors and Accessories =
887
888
889 == 3.1 E2 Extension Cable ==
890
891
892 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
893
894
895 **1m long breakout cable for LHT65N. Features:**
896
897 * (((
898 Use for AT Command， works for both LHT52/LHT65N
899 )))
900 * (((
901 Update firmware for LHT65N, works for both LHT52/LHT65N
902 )))
903 * (((
904 Supports ADC mode to monitor external ADC
905 )))
906 * (((
907 Supports Interrupt mode
908 )))
909 * (((
910 Exposed All pins from the LHT65N Type-C connector.
911
912
913
914 )))
915
916 [[image:image-20220619092421-3.png||height="371" width="529"]]
917
918
919
920
921 == 3.2 E3 Temperature Probe ==
922
923
924 [[image:image-20220515080154-4.png||_mstalt="434681" _mstvisible="3" alt="photo-20220515080154-4.png" height="182" width="161"]] [[image:image-20220515080330-5.png||_mstalt="428792" _mstvisible="3" height="201" width="195"]]
925
926
927 Temperature sensor with 2 meters cable long
928
929 * Resolution: 0.0625 °C
930 * ±0.5°C accuracy from -10°C to +85°C
931 * ±2°C accuracy from -55°C to +125°C
932 * Operating Range: -40 ~~ 125 °C
933 * Working voltage 2.35v ~~ 5v
934
935 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
936
937
938 (((
939 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
940 )))
941
942 * (((
943 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
944 )))
945
946 * (((
947 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
948 )))
949
950 (((
951 There are two kinds of commands to configure LHT65N, they are:
952 )))
953
954 * (((
955 (% style="color:#4f81bd" %)**General Commands**.
956 )))
957
958 (((
959 These commands are to configure:
960 )))
961
962 1. (((
963 General system settings like: uplink interval.
964 )))
965 1. (((
966 LoRaWAN protocol & radio-related commands.
967 )))
968
969 (((
970 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]]
971 )))
972
973 * (((
974 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
975 )))
976
977 (((
978 These commands are only valid for LHT65N, as below:
979 )))
980
981
982
983 == 4.1 Set Transmit Interval Time ==
984
985
986 Feature: Change LoRaWAN End Node Transmit Interval.
987
988
989 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
990
991 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
992
993
994 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
995
996 Format: Command Code (0x01) followed by 3 bytes time value.
997
998 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
999
1000 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1001
1002 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1003
1004 == 4.2 Set External Sensor Mode ==
1005
1006
1007 Feature: Change External Sensor Mode.
1008
1009
1010 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1011
1012 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1013
1014
1015 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1016
1017 Total bytes: 2 ~~ 5 bytes
1018
1019 **Example:**
1020
1021 * 0xA201: Set external sensor type to E1
1022
1023 * 0xA209: Same as AT+EXT=9
1024
1025 * 0xA20702003c: Same as AT+SETCNT=60
1026
1027 == 4.3 Enable/Disable uplink Temperature probe ID ==
1028
1029
1030 (((
1031 Feature: If PID is enabled, device will send the temperature probe ID on:
1032 )))
1033
1034 * (((
1035 First Packet after OTAA Join
1036 )))
1037 * (((
1038 Every 24 hours since the first packet.
1039 )))
1040
1041 (((
1042 PID is default set to disable (0)
1043
1044
1045 )))
1046
1047 (% style="color:#4f81bd" %)**AT Command:**
1048
1049 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1050
1051
1052 (% style="color:#4f81bd" %)**Downlink Command:**
1053
1054 * **0xA800**  **~-~->** AT+PID=0
1055 * **0xA801**     **~-~->** AT+PID=1
1056
1057 == 4.4 Set Password ==
1058
1059
1060 Feature: Set device password, max 9 digits
1061
1062
1063 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1064
1065 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1066
1067
1068 (% style="color:#4f81bd" %)**Downlink Command:**
1069
1070 No downlink command for this feature.
1071
1072
1073
1074 == 4.5 Quit AT Command ==
1075
1076
1077 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1078
1079
1080 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1081
1082 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1083
1084
1085 (% style="color:#4f81bd" %)**Downlink Command:**
1086
1087 No downlink command for this feature.
1088
1089
1090
1091 == 4.6 Set to sleep mode ==
1092
1093
1094 Feature: Set device to sleep mode
1095
1096 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1097 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1098
1099 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1100
1101 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1102
1103
1104 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1105
1106 * There is no downlink command to set to Sleep mode.
1107
1108 == 4.7 Set system time ==
1109
1110
1111 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1112
1113
1114 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1115
1116 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1117
1118
1119 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1120
1121 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1122
1123
1124
1125 == 4.8 Set Time Sync Mode ==
1126
1127
1128 (((
1129 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1130 )))
1131
1132 (((
1133 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.
1134
1135
1136 )))
1137
1138 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1139
1140 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1141
1142
1143 (% style="color:#4f81bd" %)**Downlink Command:**
1144
1145 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1146 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1147
1148
1149
1150 == 4.9 Set Time Sync Interval ==
1151
1152
1153 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1154
1155
1156 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1157
1158 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1159
1160
1161 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1162
1163 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1164
1165
1166
1167 == 4.10 Print data entries base on page. ==
1168
1169
1170 Feature: Print the sector data from start page to stop page (max is 416 pages).
1171
1172
1173 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1174
1175 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1176
1177
1178 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1179
1180 No downlink commands for feature
1181
1182
1183
1184 == 4.11 Print last few data entries. ==
1185
1186
1187 Feature: Print the last few data entries
1188
1189
1190 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1191
1192 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1193
1194
1195 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1196
1197 No downlink commands for feature
1198
1199
1200
1201 == 4.12 Clear Flash Record ==
1202
1203
1204 Feature: Clear flash storage for data log feature.
1205
1206
1207 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1208
1209 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1210
1211
1212 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1213
1214 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1215
1216 == 4.13 Auto Send None-ACK messages ==
1217
1218
1219 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.
1220
1221
1222 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1223
1224 The default factory setting is 0
1225
1226 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:367px" %)
1227 |=(% style="width: 158px;" %)**Command Example**|=(% style="width: 118px;" %)**Function**|=(% style="width: 87px;" %)**Response**
1228 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1229
1230 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1231
1232 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1233
1234
1235 == 4.14 Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm ==
1236
1237
1238 Feature: Set internal and external temperature sensor alarms.
1239
1240 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
1241 |=(% style="width: 268px;" %)**Command Example**|=(% style="width: 255px;" %)**Function**|=(% style="width: 50px;" %)**Response**
1242 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1243
1244 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1245
1246 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1247
1248 0): Cancel
1249
1250 1): Threshold alarm
1251
1252 2): Fluctuation alarm
1253
1254
1255 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1256
1257 (% 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.**
1258
1259
1260 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1261
1262 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1263
1264 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1265
1266
1267 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.
1268
1269 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1270
1271 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1272
1273
1274 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1275
1276 0xA5 00 ~-~- AT+WMOD=0.
1277
1278 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 )
1279
1280 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1281
1282 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.
1283
1284
1285
1286 = 5. Battery & How to replace =
1287
1288
1289 == 5.1 Battery Type ==
1290
1291
1292 (((
1293 (((
1294 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.
1295 )))
1296 )))
1297
1298 (((
1299
1300 )))
1301
1302 (((
1303 (((
1304 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1305 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1306 )))
1307 )))
1308
1309 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1310
1311
1312
1313 == 5.2 Replace Battery ==
1314
1315
1316 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.
1317
1318 [[image:image-20220515075440-2.png||_mstalt="429546" _mstvisible="3" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" _mstvisible="3" height="193" width="257"]]
1319
1320
1321 == 5.3 Battery Life Analyze ==
1322
1323
1324 (((
1325 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:
1326 [[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]]
1327 )))
1328
1329 (((
1330
1331 )))
1332
1333 (((
1334 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]]
1335 )))
1336
1337
1338
1339 = 6. FAQ =
1340
1341
1342 == 6.1 How to use AT Command? ==
1343
1344
1345 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.
1346
1347 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1348
1349
1350 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1351
1352 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1353 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1354 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1355
1356 (((
1357 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.
1358 )))
1359
1360
1361 Input password and ATZ to activate LHT65N,As shown below:
1362
1363 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1364
1365
1366 (% _msthash="506066" _msttexthash="544869" %)
1367 AT Command List is as below:
1368
1369 (% _msthash="506067" _msttexthash="361920" %)
1370 AT+<CMD>? :  Help on <CMD>
1371
1372 (% _msthash="506068" _msttexthash="243061" %)
1373 AT+<CMD> :  Run <CMD>
1374
1375 (% _msthash="506069" _msttexthash="704197" %)
1376 AT+<CMD>=<value> :  Set the value
1377
1378 (% _msthash="506070" _msttexthash="455676" %)
1379 AT+<CMD>=? :  Get the value
1380
1381 (% _msthash="506071" _msttexthash="670553" %)
1382 AT+DEBUG:  Set more info output
1383
1384 (% _msthash="506072" _msttexthash="485888" %)
1385 ATZ:  Trig a reset of the MCU
1386
1387 (% _msthash="506073" _msttexthash="2068872" %)
1388 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1389
1390 (% _msthash="506074" _msttexthash="689169" %)
1391 AT+DEUI:  Get or Set the Device EUI
1392
1393 (% _msthash="506075" _msttexthash="960414" %)
1394 AT+DADDR:  Get or Set the Device Address
1395
1396 (% _msthash="506076" _msttexthash="1079897" %)
1397 AT+APPKEY:  Get or Set the Application Key
1398
1399 (% _msthash="506077" _msttexthash="1326143" %)
1400 AT+NWKSKEY:  Get or Set the Network Session Key
1401
1402 (% _msthash="506078" _msttexthash="1573000" %)
1403 AT+APPSKEY:  Get or Set the Application Session Key
1404
1405 (% _msthash="506079" _msttexthash="1041729" %)
1406 AT+APPEUI:  Get or Set the Application EUI
1407
1408 (% _msthash="506080" _msttexthash="2104206" %)
1409 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1410
1411 (% _msthash="506081" _msttexthash="3369288" %)
1412 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1413
1414 (% _msthash="506082" _msttexthash="1894529" %)
1415 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1416
1417 (% _msthash="506083" _msttexthash="3864172" %)
1418 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1419
1420 (% _msthash="506084" _msttexthash="1712204" %)
1421 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1422
1423 (% _msthash="506085" _msttexthash="1281202" %)
1424 AT+RX2FQ:  Get or Set the Rx2 window frequency
1425
1426 (% _msthash="506086" _msttexthash="2796781" %)
1427 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1428
1429 (% _msthash="506087" _msttexthash="3285165" %)
1430 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1431
1432 (% _msthash="506088" _msttexthash="3286179" %)
1433 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1434
1435 (% _msthash="506089" _msttexthash="4703803" %)
1436 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1437
1438 (% _msthash="506090" _msttexthash="4704999" %)
1439 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1440
1441 (% _msthash="506091" _msttexthash="1528683" %)
1442 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1443
1444 (% _msthash="506092" _msttexthash="757185" %)
1445 AT+NWKID:  Get or Set the Network ID
1446
1447 (% _msthash="506093" _msttexthash="1156597" %)
1448 AT+FCU:  Get or Set the Frame Counter Uplink
1449
1450 (% _msthash="506094" _msttexthash="1273987" %)
1451 AT+FCD:  Get or Set the Frame Counter Downlink
1452
1453 (% _msthash="506095" _msttexthash="859222" %)
1454 AT+CLASS:  Get or Set the Device Class
1455
1456 (% _msthash="506096" _msttexthash="384852" %)
1457 AT+JOIN:  Join network
1458
1459 (% _msthash="506097" _msttexthash="548626" %)
1460 AT+NJS:  Get the join status
1461
1462 (% _msthash="506098" _msttexthash="2546206" %)
1463 AT+SENDB:  Send hexadecimal data along with the application port
1464
1465 (% _msthash="506099" _msttexthash="1932307" %)
1466 AT+SEND:  Send text data along with the application port
1467
1468 (% _msthash="506100" _msttexthash="3560557" %)
1469 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1470
1471 (% _msthash="506101" _msttexthash="1429701" %)
1472 AT+RECV:  Print last received data in raw format
1473
1474 (% _msthash="506102" _msttexthash="1735981" %)
1475 AT+VER:  Get current image version and Frequency Band
1476
1477 (% _msthash="506103" _msttexthash="1189474" %)
1478 AT+CFM:  Get or Set the confirmation mode (0-1)
1479
1480 (% _msthash="506104" _msttexthash="1718210" %)
1481 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1482
1483 (% _msthash="506105" _msttexthash="1339403" %)
1484 AT+SNR:  Get the SNR of the last received packet
1485
1486 (% _msthash="506106" _msttexthash="1452009" %)
1487 AT+RSSI:  Get the RSSI of the last received packet
1488
1489 (% _msthash="506107" _msttexthash="2768142" %)
1490 AT+TDC:  Get or set the application data transmission interval in ms
1491
1492 (% _msthash="506108" _msttexthash="1083914" %)
1493 AT+PORT:  Get or set the application port
1494
1495 (% _msthash="506109" _msttexthash="622440" %)
1496 AT+DISAT:  Disable AT commands
1497
1498 (% _msthash="506110" _msttexthash="868361" %)
1499 AT+PWORD: Set password, max 9 digits
1500
1501 (% _msthash="506111" _msttexthash="2210299" %)
1502 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1503
1504 (% _msthash="506112" _msttexthash="2113462" %)
1505 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1506
1507 (% _msthash="506113" _msttexthash="2087423" %)
1508 AT+PDTA:  Print the sector data from start page to stop page
1509
1510 (% _msthash="506114" _msttexthash="1063127" %)
1511 AT+PLDTA:  Print the last few sets of data
1512
1513 (% _msthash="506115" _msttexthash="1999426" %)
1514 AT+CLRDTA:  Clear the storage, record position back to 1st
1515
1516 (% _msthash="506116" _msttexthash="442130" %)
1517 AT+SLEEP:  Set sleep mode
1518
1519 (% _msthash="506117" _msttexthash="1080222" %)
1520 AT+EXT:  Get or Set external sensor model
1521
1522 (% _msthash="506118" _msttexthash="1309490" %)
1523 AT+BAT:  Get the current battery voltage in mV
1524
1525 (% _msthash="506119" _msttexthash="813891" %)
1526 AT+CFG:  Print all configurations
1527
1528 (% _msthash="506120" _msttexthash="551707" %)
1529 AT+WMOD:  Get or Set Work Mode
1530
1531 (% _msthash="506121" _msttexthash="2631499" %)
1532 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1533
1534 (% _msthash="506122" _msttexthash="3907150" %)
1535 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1536
1537 (% _msthash="506123" _msttexthash="854620" %)
1538 AT+SETCNT:  Set the count at present
1539
1540 (% _msthash="506124" _msttexthash="2554877" %)
1541 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1542
1543 (% _msthash="506125" _msttexthash="771849" %)
1544 AT+RPL:  Get or set response level
1545
1546 (% _msthash="506126" _msttexthash="1484314" %)
1547 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1548
1549 (% _msthash="506127" _msttexthash="741728" %)
1550 AT+LEAPSEC:  Get or Set Leap Second
1551
1552 (% _msthash="506128" _msttexthash="1694017" %)
1553 AT+SYNCMOD:  Get or Set time synchronization method
1554
1555 (% _msthash="506129" _msttexthash="2235948" %)
1556 AT+SYNCTDC:  Get or set time synchronization interval in day
1557
1558 (% _msthash="506130" _msttexthash="425542" %)
1559 AT+PID:  Get or set the PID
1560
1561
1562
1563 == 6.2 Where to use AT commands and Downlink commands ==
1564
1565
1566 **AT commands：**
1567
1568 [[image:image-20220620153708-1.png||height="603" width="723"]]
1569
1570
1571 **Downlink commands:**
1572
1573
1574
1575 (% style="color:blue" %)**TTN:**
1576
1577 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1578
1579
1580
1581 (% style="color:blue" %)**Helium：**
1582
1583 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1584
1585
1586
1587 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1588
1589
1590 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1591
1592
1593 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1594
1595
1596
1597 (% style="color:blue" %)**Aws:**
1598
1599 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1600
1601
1602
1603 == 6.3 How to change the uplink interval？ ==
1604
1605
1606 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/||_msthash="506137" _msttexthash="5712018" style="background-color: rgb(255, 255, 255);"]]
1607
1608
1609
1610 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1611
1612
1613 [[image:image-20220615153355-1.png]]
1614
1615 [[image:1655802313617-381.png]]
1616
1617
1618 (((
1619 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.
1620 )))
1621
1622
1623 Input password and ATZ to activate LHT65N,As shown below:
1624
1625 [[image:image-20220615154519-3.png||height="672" width="807"]]
1626
1627
1628
1629 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1630
1631
1632 [[image:image-20220615153355-1.png]]
1633
1634
1635 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1636
1637 [[image:image-20220615170542-5.png]]
1638
1639
1640
1641 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1642
1643 (% _msthash="506146" _msttexthash="52173160" %)
1644 First connect the four lines；(% style="display:none" %)
1645
1646 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1647
1648
1649 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1650
1651 [[image:image-20220621170938-2.png]]
1652
1653
1654
1655 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1656
1657 [[image:image-20220615171334-6.png]]
1658
1659
1660 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1661
1662
1663 When this interface appears, it indicates that the download has been completed.
1664
1665 [[image:image-20220620160723-8.png]]
1666
1667
1668 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1669
1670
1671
1672 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1673
1674
1675 [[image:image-20220623110706-1.png]]
1676
1677
1678 [[image:image-20220623112117-4.png||height="459" width="343"]]
1679
1680
1681 (((
1682 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.
1683 )))
1684
1685
1686 Input password and ATZ to activate LHT65N,As shown below:
1687
1688 [[image:image-20220615154519-3.png||height="672" width="807"]]
1689
1690
1691
1692 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1693
1694
1695 [[image:image-20220623110706-1.png]]
1696
1697
1698 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1699
1700 [[image:image-20220615170542-5.png]]
1701
1702
1703
1704 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1705
1706 (% _msthash="506146" _msttexthash="52173160" %)
1707 First connect the four lines；
1708
1709 (% _msthash="506146" _msttexthash="52173160" %)
1710 [[image:image-20220623113959-5.png||height="528" width="397"]]
1711
1712 (% _msthash="506146" _msttexthash="52173160" %)
1713 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1714
1715
1716
1717 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1718
1719 [[image:image-20220615171334-6.png]]
1720
1721
1722 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1723
1724
1725 When this interface appears, it indicates that the download has been completed.
1726
1727 [[image:image-20220620160723-8.png]]
1728
1729
1730 Finally,restart reset device again
1731
1732
1733
1734 = 7. Order Info =
1735
1736
1737 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1738
1739 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1740
1741 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1742 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1743 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1744 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1745 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1746 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1747 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1748 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1749
1750 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1751
1752 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1753
1754 = 8. Packing Info =
1755
1756
1757 **Package Includes**:
1758
1759 * LHT65N Temperature & Humidity Sensor x 1
1760 * Optional external sensor
1761
1762 **Dimension and weight**:
1763
1764 * Device Size:  10 x 10 x 3.5 cm
1765 * Device Weight: 120.5g
1766
1767 = 9. Reference material =
1768
1769
1770 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1771
1772 = 10. FCC Warning =
1773
1774
1775 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1776
1777 (1) This device may not cause harmful interference；
1778
1779 (2) this device must accept any interference received, including interference that may cause undesired operation.
1780
1781
1782