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Version 234.16 by Xiaoling on 2023/04/26 15:16
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1 (% style="text-align:center" %)
2 [[image:image-20220613162008-1.png||_mstalt="428142" height="510" width="334"]]
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4
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6
7
8 **Table of Contents：**
9
10 {{toc/}}
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14
15
16 = 1. Introduction =
17
18 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
19
20
21 (((
22 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.**
23 )))
24
25 (((
26 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.
27 )))
28
29 (((
30 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
31 )))
32
33 (((
34 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
35 )))
36
37 (((
38 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.
39 )))
40
41 (((
42 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
43 )))
44
45
46 == 1.2 Features ==
47
48
49 * LoRaWAN v1.0.3 Class A protocol
50 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
51 * AT Commands to change parameters
52 * Remote configure parameters via LoRaWAN Downlink
53 * Firmware upgradeable via program port
54 * Built-in 2400mAh battery for up to 10 years of use.
55 * Built-in Temperature & Humidity sensor
56 * Optional External Sensors
57 * Tri-color LED to indicate working status
58 * Datalog feature (Max 3328 records)
59
60 == 1.3 Specification ==
61
62
63 (% style="color:#037691" %)**Built-in Temperature Sensor:**
64
65 * Resolution: 0.01 °C
66 * Accuracy Tolerance : Typ ±0.3 °C
67 * Long Term Drift: < 0.02 °C/yr
68 * Operating Range: -40 ~~ 85 °C
69
70 (% style="color:#037691" %)**Built-in Humidity Sensor:**
71
72 * Resolution: 0.04 %RH
73 * Accuracy Tolerance : Typ ±3 %RH
74 * Long Term Drift: < 0.02 °C/yr
75 * Operating Range: 0 ~~ 96 %RH
76
77 (% style="color:#037691" %)**External Temperature Sensor:**
78
79 * Resolution: 0.0625 °C
80 * ±0.5°C accuracy from -10°C to +85°C
81 * ±2°C accuracy from -55°C to +125°C
82 * Operating Range: -55 °C ~~ 125 °C
83
84 = 2. Connect LHT65N to IoT Server =
85
86 == 2.1 How does LHT65N work? ==
87
88
89 (((
90 LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
91 )))
92
93 (((
94 If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
95 )))
96
97
98 == 2.2 How to Activate LHT65N? ==
99
100
101 (((
102 The LHT65N has two working modes:
103 )))
104
105 * (((
106 (% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N doesn't have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
107 )))
108 * (((
109 (% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65N will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
110 )))
111
112 (((
113 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
114 )))
115
116
117 [[image:image-20220515123819-1.png||_mstalt="430742" height="379" width="317"]]
118
119 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
120 |=(% style="width: 167px;background-color:#D9E2F3;color:#0070C0" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 225px;background-color:#D9E2F3;color:#0070C0" %)**Action**
121 |(% style="background-color:#f2f2f2; width:167px" %)Pressing ACT between 1s < time < 3s|(% style="background-color:#f2f2f2; width:117px" %)Test uplink status|(% style="background-color:#f2f2f2; width:225px" %)(((
122 If LHT65N is already Joined to rhe LoRaWAN network, LHT65N will send an uplink packet, if LHT65N has external sensor connected,(% style="color:blue" %)**Blue led** (%%)will blink once. If LHT65N has not external sensor, (% style="color:red" %)**Red led**(%%) will blink once.
123 )))
124 |(% style="background-color:#f2f2f2; width:167px" %)Pressing ACT for more than 3s|(% style="background-color:#f2f2f2; width:117px" %)Active Device|(% style="background-color:#f2f2f2; width:225px" %)(((
125 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network.
126 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after join in network.
127 )))
128 |(% style="background-color:#f2f2f2; width:167px" %)Fast press ACT 5 times.|(% style="background-color:#f2f2f2; width:117px" %)Deactivate Device|(% style="background-color:#f2f2f2; width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means LHT65N is in Deep Sleep Mode.
129
130 == 2.3 Example to join LoRaWAN network ==
131
132
133 (% class="wikigeneratedid" %)
134 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.
135
136
137 (% class="wikigeneratedid" %)
138 [[image:image-20220522232442-1.png||_mstalt="427830" height="387" width="648"]]
139
140
141 (((
142 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:
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-20230426083319-1.png]]
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"]]
165
166
167 [[image:image-20220522232932-4.png||_mstalt="430157"]]
168
169
170 [[image:image-20220522232954-5.png||_mstalt="431847"]]
171
172
173
174 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
175
176
177 [[image:image-20220522233026-6.png||_mstalt="429403"]]
178
179
180 Input APP EUI,  APP KEY and DEV EUI:
181
182
183 [[image:image-20220522233118-7.png||_mstalt="430430"]]
184
185
186 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
187
188
189 (((
190 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.
191 )))
192
193 [[image:image-20220522233300-8.png||_mstalt="428389" height="219" width="722"]]
194
195
196 == 2.4 Uplink Payload   ( Fport~=2) ==
197
198
199 (((
200 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
201 )))
202
203 (((
204 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
205 )))
206
207 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:390px" %)
208 |=(% style="width: 60px;background-color:#D9E2F3" %)(((
209 **Size(bytes)**
210 )))|=(% style="width: 30px;background-color:#D9E2F3" %)(((
211 **2**
212 )))|=(% style="width: 100px;background-color:#D9E2F3" %)(((
213 **2**
214 )))|=(% style="width: 100px;background-color:#D9E2F3" %)(((
215 **2**
216 )))|=(% style="width: 50px;background-color:#D9E2F3" %)(((
217 **1**
218 )))|=(% style="width: 50px;background-color:#D9E2F3" %)(((
219 **4**
220 )))
221 |(% style="width:97px" %)(((
222 **Value**
223 )))|(% style="width:39px" %)(((
224 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
225 )))|(% style="width:100px" %)(((
226 (((
227 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
228 )))
229 )))|(% style="width:77px" %)(((
230 (((
231 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
232 )))
233 )))|(% style="width:47px" %)(((
234 [[Ext>>||anchor="H2.4.5Ext23"]] #
235 )))|(% style="width:51px" %)(((
236 [[Ext value>>||anchor="H2.4.6Extvalue"]]
237 )))
238
239 * The First 6 bytes: has fix meanings for every LHT65N.
240
241 * The 7th byte (EXT #): defines the external sensor model.
242
243 * 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.)
244
245 === 2.4.1 Decoder in TTN V3 ===
246
247
248 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.
249
250 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]]
251
252
253 [[image:image-20220522234118-10.png||_mstalt="451464" height="353" width="729"]]
254
255
256 === 2.4.2 BAT-Battery Info ===
257
258
259 These two bytes of BAT include the battery state and the actually voltage.
260
261 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:477px" %)
262 |=(% style="width: 69px; background-color:#D9E2F3;color:#0070C0" %)(((
263 **Bit(bit)**
264 )))|=(% style="width: 253px;background-color:#D9E2F3;color:#0070C0" %)[15:14]|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)[13:0]
265 |(% style="width:66px" %)(((
266 **Value**
267 )))|(% style="width:250px" %)(((
268 BAT Status
269 00(b): Ultra Low ( BAT <= 2.50v)
270 01(b): Low (2.50v <=BAT <= 2.55v)
271 10(b): OK (2.55v <= BAT <=2.65v)
272 11(b): Good (BAT >= 2.65v)
273 )))|(% style="width:152px" %)Actually BAT voltage
274
275 **(b)stands for binary**
276
277
278 [[image:image-20220522235639-1.png||_mstalt="431392" height="139" width="727"]]
279
280
281 Check the battery voltage for LHT65N.
282
283 * BAT status=(0Xcba4>>14)&0xFF=11 (BIN) ，very good
284
285 * Battery Voltage =0xCBA4&0x3FFF=0x0BA4=2980mV
286
287 === 2.4.3 Built-in Temperature ===
288
289
290 [[image:image-20220522235639-2.png||_mstalt="431756" height="138" width="722"]]
291
292 * Temperature:  0x0ABB/100=27.47℃
293
294 [[image:image-20220522235639-3.png||_mstalt="432120"]]
295
296 * Temperature:  (0xF5C6-65536)/100=-26.18℃
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 === 2.4.5 Ext # ===
306
307
308 Bytes for External Sensor:
309
310 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:425px" %)
311 |=(% style="width: 102px; background-color:#D9E2F3;color:#0070C0" %)**EXT # Value**|=(% style="width: 323px;background-color:#D9E2F3;color:#0070C0" %)**External Sensor Type**
312 |(% style="width:102px" %)0x01|(% style="width:319px" %)Sensor E3, Temperature Sensor
313 |(% style="width:102px" %)0x09|(% style="width:319px" %)Sensor E3, Temperature Sensor, Datalog Mod
314
315
316 === 2.4.6 Ext value ===
317
318 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
319
320
321 [[image:image-20220522235639-5.png||_mstalt="432848"]]
322
323
324 * DS18B20 temp=0x0ADD/100=27.81℃
325
326 The last 2 bytes of data are meaningless
327
328
329
330 [[image:image-20220522235639-6.png||_mstalt="433212"]]
331
332
333 * External temperature= (0xF54F-65536)/100=-27.37℃
334
335 F54F :  (F54F & 8000 == 1) , temp = (F54F - 65536)/100 = 27.37℃
336
337 （0105 & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative）
338
339 The last 2 bytes of data are meaningless
340
341 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
342
343
344
345 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
346
347
348 (((
349 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:
350 )))
351
352 (((
353
354 )))
355
356 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
357 |=(% style="width: 50px;background-color:#D9E2F3" %)(((
358 **Size(bytes)**
359 )))|=(% style="width: 70px;background-color:#D9E2F3" %)(((
360 **2**
361 )))|=(% style="width: 120px;background-color:#D9E2F3" %)(((
362 **2**
363 )))|=(% style="width: 120px;background-color:#D9E2F3" %)(((
364 **2**
365 )))|=(% style="width: 50px;background-color:#D9E2F3" %)(((
366 **1**
367 )))|=(% style="width: 70px;background-color:#D9E2F3" %)(((
368 **4**
369 )))
370 |(% style="width:110px" %)(((
371 **Value**
372 )))|(% style="width:71px" %)(((
373 [[External temperature>>||anchor="H4.2SetExternalSensorMode"]]
374 )))|(% style="width:99px" %)(((
375 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
376 )))|(% style="width:132px" %)(((
377 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
378 )))|(% style="width:54px" %)(((
379 Status & Ext
380 )))|(% style="width:64px" %)(((
381 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
382 )))
383
384 * **Battery status & Built-in Humidity**
385
386 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:461px" %)
387 |=(% style="width: 69px;" %)Bit(bit)|=(% style="width: 258px;" %)[15:14]|=(% style="width: 134px;" %)[11:0]
388 |(% style="width:67px" %)Value|(% style="width:256px" %)(((
389 BAT Status
390 00(b): Ultra Low ( BAT <= 2.50v)
391 01(b): Low  (2.50v <=BAT <= 2.55v)
392 10(b): OK   (2.55v <= BAT <=2.65v)
393 11(b): Good   (BAT >= 2.65v)
394 )))|(% style="width:132px" %)(((
395 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
396 )))
397
398 * **Status & Ext Byte**
399
400 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
401 |=(% 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]**
402 |=(% 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)
403
404 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
405 * (% 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.
406 * (% 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)
407
408 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
409
410
411 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
412
413 be used to power the external ADC sensor; user can control the power on time for this
414
415 (% style="color:blue" %)**sensor by setting:**
416
417 **AT+EXT=6,timeout**  (% style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
418
419 **For example:**
420
421 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
422
423
424 Or use **downlink command A2** to set the same.
425
426 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
427
428 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.
429
430 [[image:image-20220628150112-1.png||_mstalt="427414" height="241" width="285"]]
431
432
433 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
434
435 [[image:image-20220628150714-4.png||_mstalt="431054"]]
436
437
438 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.
439
440
441 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
442
443 [[image:image-20220628151005-5.png||_mstalt="429546"]]
444
445
446 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
447
448 [[image:image-20220628151056-6.png||_mstalt="431873"]]
449
450
451 3) Within range
452
453 [[image:image-20220628151143-7.png||_mstalt="431210"]]
454
455
456
457 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （Since Firmware v1.3） ====
458
459
460 [[image:image-20220927095645-1.png||_mstalt="433771" height="534" width="460"]]
461
462
463 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
464
465 [[image:image-20220906102307-7.png||_mstalt="430443"]]
466
467
468 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
469
470 The external cable NE2 can be use for MOD4 and MOD8
471
472
473
474 ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
475
476
477 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
478
479
480 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
481
482 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
483
484 In Open State, the power consumption is the same as if there is no probe
485
486 In Close state, the power consumption will be 3uA higher than normal.
487
488 [[image:image-20220906100852-1.png||_mstalt="429156" height="205" width="377"]]
489
490
491 Ext=4,Interrupt Sensor：
492
493 (% border="1.5" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:478px" %)
494 |(% style="width:101px" %)(((
495 AT+EXT=4,1
496 )))|(% style="width:373px" %)(((
497 Sent uplink packet in both rising and falling interrupt
498 )))
499 |(% style="width:101px" %)(((
500 AT+EXT=4,2
501 )))|(% style="width:373px" %)(((
502 Sent uplink packet only in falling interrupt
503 )))
504 |(% style="width:101px" %)(((
505 AT+EXT=4,3
506 )))|(% style="width:373px" %)(((
507 Sent uplink packet only in rising interrupt
508 )))
509
510 Trigger by falling edge:
511
512 [[image:image-20220906101145-2.png||_mstalt="428324"]]
513
514
515 Trigger by raising edge：
516
517 [[image:image-20220906101145-3.png||_mstalt="428688"]]
518
519
520
521 ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
522
523
524 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
525
526
527 (% 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.
528
529 [[image:image-20220906101320-4.png||_mstalt="427336" height="366" width="698"]]
530
531
532 (% 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
533
534 [[image:image-20220906101320-5.png||_mstalt="427700" height="353" width="696"]]
535
536
537 Ext=8, Counting Sensor ( 4 bytes)：
538
539 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
540 |(% style="width:138px" %)(((
541 AT+EXT=8,0
542 )))|(% style="width:240px" %)(((
543 Count at falling interrupt
544 )))
545 |(% style="width:138px" %)(((
546 AT+EXT=8,1
547 )))|(% style="width:240px" %)(((
548 Count at rising interrupt
549 )))
550 |(% style="width:138px" %)(((
551 AT+SETCNT=60
552 )))|(% style="width:240px" %)(((
553 Sent current count to 60
554 )))
555
556 [[image:image-20220906101320-6.png||_mstalt="428064"]]
557
558
559 (% style="color:blue" %)**A2 downlink Command：**
560
561 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
562
563 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
564
565 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
566
567 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
568
569 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)
570
571
572 == 2.5 Show data on Datacake ==
573
574
575 (((
576 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:
577 )))
578
579 (((
580
581 )))
582
583 (((
584 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
585 )))
586
587 (((
588 (% 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.
589 )))
590
591 (((
592
593 )))
594
595 (((
596 Add Datacake:
597 )))
598
599
600 [[image:image-20220523000825-7.png||_mstalt="429884" height="262" width="583"]]
601
602
603
604 Select default key as Access Key:
605
606
607 [[image:image-20220523000825-8.png||_mstalt="430248" height="453" width="406"]]
608
609
610 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
611
612
613 [[image:image-20220523000825-9.png||_mstalt="430612" height="366" width="392"]]
614
615
616 [[image:image-20220523000825-10.png||_mstalt="450619" height="413" width="728"]]
617
618
619 == 2.6 Datalog Feature ==
620
621
622 (((
623 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.
624 )))
625
626
627 === 2.6.1 Ways to get datalog via LoRaWAN ===
628
629
630 There are two methods:
631
632 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
633
634
635 (% 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.
636
637
638 (% style="color:red" %)**Note for method 2:**
639
640 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
641 * 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.
642
643 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
644
645
646 [[image:image-20220703111700-2.png||_mstalt="426244" height="381" width="1119"]]
647
648
649 === 2.6.2 Unix TimeStamp ===
650
651
652 LHT65N uses Unix TimeStamp format based on
653
654
655 [[image:image-20220523001219-11.png||_mstalt="450450" height="97" width="627"]]
656
657
658
659 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
660
661 Below is the converter example
662
663 [[image:image-20220523001219-12.png||_mstalt="450827" height="298" width="720"]]
664
665
666 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
667
668
669 === 2.6.3 Set Device Time ===
670
671
672 (((
673 (% style="color:blue" %)**There are two ways to set device's time:**
674 )))
675
676 (((
677 **1.  Through LoRaWAN MAC Command (Default settings)**
678 )))
679
680 (((
681 User need to set SYNCMOD=1 to enable sync time via MAC command.
682 )))
683
684 (((
685 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).
686 )))
687
688 (((
689 (% 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.**
690 )))
691
692
693 (((
694 **2. Manually Set Time**
695 )))
696
697 (((
698 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
699 )))
700
701
702 === 2.6.4 Poll sensor value ===
703
704
705 User can poll sensor value based on timestamps from the server. Below is the downlink command.
706
707 [[image:image-20220523152302-15.png||_mstalt="451581"]]
708
709
710 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.
711
712 For example, downlink command (% _mstmutation="1" %)**31 5FC5F350 5FC6 0160 05**(%%)
713
714 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00's data
715
716 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
717
718
719 === 2.6.5 Datalog Uplink payload ===
720
721
722 The Datalog poll reply uplink will use below payload format.
723
724 **Retrieval data payload:**
725
726 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)
727 |=(% style="width: 60px;" %)(((
728 **Size(bytes)**
729 )))|=(% style="width: 90px;" %)**2**|=(% style="width: 90px;" %)**2**|=(% style="width: 70px;" %)**2**|=(% style="width: 100px;" %)**1**|=(% style="width: 70px;" %)**4**
730 |(% 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"]]
731
732 **Poll message flag & Ext:**
733
734 [[image:image-20221006192726-1.png||_mstalt="430508" height="112" width="754"]]
735
736 (% 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)
737
738 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
739
740 * Poll Message Flag is set to 1.
741
742 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
743
744 For example, in US915 band, the max payload for different DR is:
745
746 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
747
748 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
749
750 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
751
752 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
753
754 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
755
756
757 **Example:**
758
759 If LHT65N has below data inside Flash:
760
761 [[image:image-20220523144455-1.png||_mstalt="430040" height="335" width="735"]]
762
763
764 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
765
766 Where : Start time: 60065F97 = time 21/1/19 04:27:03
767
768 Stop time: 60066DA7= time 21/1/19 05:27:03
769
770
771 **LHT65N will uplink this payload.**
772
773 [[image:image-20220523001219-13.png||_mstalt="451204" height="421" style="text-align:left" width="727"]]
774
775
776 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
777
778 Where the first 11 bytes is for the first entry:
779
780 7FFF089801464160065F97
781
782 Ext sensor data=0x7FFF/100=327.67
783
784 Temp=0x088E/100=22.00
785
786 Hum=0x014B/10=32.6
787
788 poll message flag & Ext=0x41,means reply data,Ext=1
789
790 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
791
792
793 == 2.7 Alarm Mode & Feature "Multi sampling, one uplink" ==
794
795
796 (((
797 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.
798 )))
799
800 (((
801 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
802
803
804 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
805
806
807 **Internal GXHT30 temperature alarm（Acquisition time: fixed at one minute）**
808
809 (((
810 (% class="box infomessage" %)
811 (((
812 **AT+WMOD=3**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
813
814 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
815
816 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
817
818 (% _mstmutation="1" %)**AT+ARTEMP=？ **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
819
820 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
821
822 **AT+LEDALARM=1** :       Enable LED visual Alarm.
823 )))
824 )))
825
826 (% style="color:#4f81bd" %)**Downlink Command:**
827
828 AT+WMOD=1:  A501  ,  AT+WMOD=0 :  A600
829
830 AT+CITEMP=1 : A60001
831
832 AT+ARTEMP=1,60  :  A70001003C
833
834 AT+ARTEMP=-16,60 :  A7FFF0003C
835
836 AT+LEDALARM=1  :  3601
837
838
839 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
840
841 Total bytes: 8 bytes
842
843 **Example: **AA0100010001003C
844
845 WMOD=01
846
847 CITEMP=0001
848
849 TEMPlow=0001
850
851 TEMPhigh=003C
852
853
854 **DS18B20 and TMP117 Threshold Alarm**
855
856 **~ AT+WMOD=1,60,-10,20**
857
858 (% style="color:#4f81bd" %)**Downlink Command:**
859
860 **Example: **A5013CFC180014
861
862 MOD=01
863
864 CITEMP=3C(S)
865
866 TEMPlow=FC18
867
868 TEMPhigh=0014
869
870
871 **Fluctuation alarm for DS18B20 and TMP117（Acquisition time: minimum 1s）**
872
873 **AT+WMOD=2,60,5** 
874
875 (% style="color:#4f81bd" %)**Downlink Command:**
876
877 **Example: **A5023C05
878
879 MOD=02
880
881 CITEMP=3C(S)
882
883 temperature fluctuation=05
884
885
886 **Sampling multiple times and uplink together**
887
888 **AT+WMOD=3,1,60,20,-16,32,1**   
889
890 Explain:
891
892 * (% style="color:#037691" %)**parameter1:**(%%)Set Working Mode to **Mode 3**
893 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
894 * (% style="color:#037691" %)**parameter3:**(%%)Sampling Interval is **60**s.
895 * (% 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)
896 * (% style="color:#037691" %)**parameter5 & parameter6:**(%%)Temperature alarm range is **-16** to **32**°C,
897 * (% 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.
898
899 (% style="color:#4f81bd" %)**Downlink Command:**
900
901 **Example: **A50301003C14FFF0002001
902
903 MOD=03
904
905 TEMP=DS18B20
906
907 CITEMP=003C(S)
908
909 Total number of acquisitions=14
910
911 TEMPlow=FFF0
912
913 TEMPhigh=0020
914
915 ARTEMP=01
916
917 **Uplink payload( Fport=3)**
918
919 **Example: CBEA**01**0992**//0A41//**09C4**
920
921 BatV=CBEA
922
923 TEMP=DS18B20
924
925 Temp1=0992  ~/~/ 24.50℃
926
927 Temp2=0A41  ~/~/ 26.25℃
928
929 Temp3=09C4  ~/~/ 25.00℃
930
931 (% style="color:red" %)**Note: This uplink will automatically select the appropriate DR according to the data length**
932
933 (% style="color:red" %)** In this mode, the temperature resolution of ds18b20 is 0.25℃ to save power consumption**
934 )))
935
936
937 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
938
939
940 (% class="box infomessage" %)
941 (((
942 (((
943 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
944 )))
945
946 (((
947 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
948 )))
949
950 (((
951 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
952 )))
953
954 (((
955 (% _mstmutation="1" %)**AT+ARTEMP=？ **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
956 )))
957
958 (((
959 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
960 )))
961 )))
962
963 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
964
965 Total bytes: 8 bytes
966
967 **Example:**AA0100010001003C
968
969 WMOD=01
970
971 CITEMP=0001
972
973 TEMPlow=0001
974
975 TEMPhigh=003C
976
977
978 == 2.8 LED Indicator ==
979
980
981 The LHT65 has a triple color LED which for easy showing different stage .
982
983 While user press ACT button, the LED will work as per LED status with ACT button.
984
985 In a normal working state:
986
987 * For each uplink, the BLUE LED or RED LED will blink once.
988 BLUE LED when external sensor is connected.
989 * RED LED when external sensor is not connected
990 * For each success downlink, the PURPLE LED will blink once
991
992 == 2.9 installation ==
993
994
995 [[image:image-20220516231650-1.png||_mstalt="428597" height="436" width="428"]]
996
997
998 = 3. Sensors and Accessories =
999
1000 == 3.1 E2 Extension Cable ==
1001
1002
1003 [[image:image-20220619092222-1.png||_mstalt="429533" height="182" width="188"]][[image:image-20220619092313-2.png||_mstalt="430222" height="182" width="173"]]
1004
1005
1006 **1m long breakout cable for LHT65N. Features:**
1007
1008 * (((
1009 Use for AT Command， works for both LHT52/LHT65N
1010 )))
1011 * (((
1012 Update firmware for LHT65N, works for both LHT52/LHT65N
1013 )))
1014 * (((
1015 Supports ADC mode to monitor external ADC
1016 )))
1017 * (((
1018 Supports Interrupt mode
1019 )))
1020 * (((
1021 Exposed All pins from the LHT65N Type-C connector.
1022
1023
1024
1025 )))
1026
1027 [[image:image-20220619092421-3.png||_mstalt="430547" height="371" width="529"]]
1028
1029
1030 == 3.2 E3 Temperature Probe ==
1031
1032
1033 [[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"]]
1034
1035
1036 Temperature sensor with 2 meters cable long
1037
1038 * Resolution: 0.0625 °C
1039 * ±0.5°C accuracy from -10°C to +85°C
1040 * ±2°C accuracy from -55°C to +125°C
1041 * Operating Range: -40 ~~ 125 °C
1042 * Working voltage 2.35v ~~ 5v
1043
1044 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1045
1046
1047 (((
1048 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1049 )))
1050
1051 * (((
1052 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1053 )))
1054
1055 * (((
1056 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1057 )))
1058
1059 (((
1060 There are two kinds of commands to configure LHT65N, they are:
1061 )))
1062
1063 * (((
1064 (% style="color:#4f81bd" %)**General Commands**.
1065 )))
1066
1067 (((
1068 These commands are to configure:
1069 )))
1070
1071 1. (((
1072 General system settings like: uplink interval.
1073 )))
1074 1. (((
1075 LoRaWAN protocol & radio-related commands.
1076 )))
1077
1078 (((
1079 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]]
1080 )))
1081
1082 * (((
1083 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1084 )))
1085
1086 (((
1087 These commands are only valid for LHT65N, as below:
1088 )))
1089
1090
1091 == 4.1 Set Transmit Interval Time ==
1092
1093
1094 Feature: Change LoRaWAN End Node Transmit Interval.
1095
1096
1097 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1098
1099 [[image:image-20220523150701-2.png||_mstalt="427453"]]
1100
1101
1102 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1103
1104 Format: Command Code (0x01) followed by 3 bytes time value.
1105
1106 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1107
1108 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1109
1110 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1111
1112 == 4.2 Set External Sensor Mode ==
1113
1114
1115 Feature: Change External Sensor Mode.
1116
1117
1118 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1119
1120 [[image:image-20220523150759-3.png||_mstalt="432146"]]
1121
1122
1123 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1124
1125 Total bytes: 2 ~~ 5 bytes
1126
1127 **Example:**
1128
1129 * 0xA201: Set external sensor type to E1
1130
1131 * 0xA209: Same as AT+EXT=9
1132
1133 * 0xA20702003c: Same as AT+SETCNT=60
1134
1135 == 4.3 Enable/Disable uplink Temperature probe ID ==
1136
1137
1138 (((
1139 Feature: If PID is enabled, device will send the temperature probe ID on:
1140 )))
1141
1142 * (((
1143 First Packet after OTAA Join
1144 )))
1145 * (((
1146 Every 24 hours since the first packet.
1147 )))
1148
1149 (((
1150 PID is default set to disable (0)
1151
1152
1153 )))
1154
1155 (% style="color:#4f81bd" %)**AT Command:**
1156
1157 [[image:image-20220523150928-4.png||_mstalt="431821"]]
1158
1159
1160 (% style="color:#4f81bd" %)**Downlink Command:**
1161
1162 * **0xA800**  **~-~->** AT+PID=0
1163 * **0xA801**     **~-~->** AT+PID=1
1164
1165 == 4.4 Set Password ==
1166
1167
1168 Feature: Set device password, max 9 digits
1169
1170
1171 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1172
1173 [[image:image-20220523151052-5.png||_mstalt="428623"]]
1174
1175
1176 (% style="color:#4f81bd" %)**Downlink Command:**
1177
1178 No downlink command for this feature.
1179
1180
1181 == 4.5 Quit AT Command ==
1182
1183
1184 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1185
1186
1187 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1188
1189 [[image:image-20220523151132-6.png||_mstalt="428649"]]
1190
1191
1192 (% style="color:#4f81bd" %)**Downlink Command:**
1193
1194 No downlink command for this feature.
1195
1196
1197 == 4.6 Set to sleep mode ==
1198
1199
1200 Feature: Set device to sleep mode
1201
1202 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1203 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1204
1205 (% style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1206
1207 [[image:image-20220523151218-7.png||_mstalt="430703"]]
1208
1209
1210 (% style="color:#4f81bd" %)**Downlink Command:**
1211
1212 * There is no downlink command to set to Sleep mode.
1213
1214 == 4.7 Set system time ==
1215
1216
1217 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1218
1219
1220 (% style="color:#4f81bd" %)**AT Command:**
1221
1222 [[image:image-20220523151253-8.png||_mstalt="430677"]]
1223
1224
1225 (% style="color:#4f81bd" %)**Downlink Command:**
1226
1227 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1228
1229
1230 == 4.8 Set Time Sync Mode ==
1231
1232
1233 (((
1234 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1235 )))
1236
1237 (((
1238 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.
1239
1240
1241 )))
1242
1243 (% style="color:#4f81bd" %)**AT Command:**
1244
1245 [[image:image-20220523151336-9.png||_mstalt="431717"]]
1246
1247
1248 (% style="color:#4f81bd" %)**Downlink Command:**
1249
1250 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1251 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1252
1253
1254 == 4.9 Set Time Sync Interval ==
1255
1256
1257 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1258
1259
1260 (% style="color:#4f81bd" %)**AT Command:**
1261
1262 [[image:image-20220523151411-10.png||_mstalt="449696"]]
1263
1264
1265 (% style="color:#4f81bd" %)**Downlink Command:**
1266
1267 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1268
1269
1270 == 4.10 Print data entries base on page. ==
1271
1272
1273 Feature: Print the sector data from start page to stop page (max is 416 pages).
1274
1275
1276 (% style="color:#4f81bd" %)**AT Command: AT+PDTA**
1277
1278 [[image:image-20220523151450-11.png||_mstalt="451035"]]
1279
1280
1281 (% style="color:#4f81bd" %)**Downlink Command:**
1282
1283 No downlink commands for feature
1284
1285
1286 == 4.11 Print last few data entries. ==
1287
1288
1289 Feature: Print the last few data entries
1290
1291
1292 (% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1293
1294 [[image:image-20220523151524-12.png||_mstalt="452101"]]
1295
1296
1297 (% style="color:#4f81bd" %)**Downlink Command:**
1298
1299 No downlink commands for feature
1300
1301
1302 == 4.12 Clear Flash Record ==
1303
1304
1305 Feature: Clear flash storage for data log feature.
1306
1307
1308 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1309
1310 [[image:image-20220523151556-13.png||_mstalt="454129"]]
1311
1312
1313 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1314
1315 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1316
1317 == 4.13 Auto Send None-ACK messages ==
1318
1319
1320 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.
1321
1322
1323 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1324
1325 The default factory setting is 0
1326
1327 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:367px" %)
1328 |=(% style="width: 158px;" %)**Command Example**|=(% style="width: 118px;" %)**Function**|=(% style="width: 87px;" %)**Response**
1329 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1330
1331 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1332
1333 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1334
1335 == 4.14 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm（Since firmware 1.3.0） ==
1336
1337
1338 Feature: Set internal and external temperature sensor alarms.
1339
1340 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
1341 |=(% style="width: 250px;" %)**Command Example**|=(% style="width: 200px;" %)**Function**|=(% style="width: 50px;" %)**Response**
1342 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1343
1344 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1345
1346 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1347
1348 0): Cancel
1349
1350 1): Threshold alarm
1351
1352 2): Fluctuation alarm
1353
1354
1355 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1356
1357 (% 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.**
1358
1359
1360 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1361
1362 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1363
1364 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1365
1366
1367 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.
1368
1369 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1370
1371 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1372
1373
1374 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1375
1376 0xA5 00 ~-~- AT+WMOD=0.
1377
1378 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 )
1379
1380 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))
1381
1382 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1383
1384 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.
1385
1386
1387 = 5. Battery & How to replace =
1388
1389 == 5.1 Battery Type ==
1390
1391
1392 (((
1393 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.
1394 )))
1395
1396 (((
1397 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1398
1399
1400 [[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]
1401 )))
1402
1403 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1404
1405
1406 == 5.2 Replace Battery ==
1407
1408
1409 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.
1410
1411 [[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]
1412
1413
1414 == 5.3 Battery Life Analyze ==
1415
1416
1417 (((
1418 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:
1419 [[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]]
1420 )))
1421
1422
1423 (((
1424 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]]
1425 )))
1426
1427
1428 = 6. FAQ =
1429
1430 == 6.1 How to use AT Command? ==
1431
1432
1433 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.
1434
1435 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1436
1437
1438 **Connection:**
1439
1440 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1441 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1442 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1443
1444 (((
1445 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.
1446 )))
1447
1448
1449 Input password and ATZ to activate LHT65N,As shown below:
1450
1451 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1452
1453
1454 AT Command List is as below:
1455
1456 AT+<CMD>? :  Help on <CMD>
1457
1458 AT+<CMD> :  Run <CMD>
1459
1460 AT+<CMD>=<value> :  Set the value
1461
1462 AT+<CMD>=? :  Get the value
1463
1464 AT+DEBUG:  Set more info output
1465
1466 ATZ:  Trig a reset of the MCU
1467
1468 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1469
1470 AT+DEUI:  Get or Set the Device EUI
1471
1472 AT+DADDR:  Get or Set the Device Address
1473
1474 AT+APPKEY:  Get or Set the Application Key
1475
1476 AT+NWKSKEY:  Get or Set the Network Session Key
1477
1478 AT+APPSKEY:  Get or Set the Application Session Key
1479
1480 AT+APPEUI:  Get or Set the Application EUI
1481
1482 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1483
1484 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1485
1486 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1487
1488 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1489
1490 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1491
1492 AT+RX2FQ:  Get or Set the Rx2 window frequency
1493
1494 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1495
1496 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1497
1498 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1499
1500 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1501
1502 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1503
1504 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1505
1506 AT+NWKID:  Get or Set the Network ID
1507
1508 AT+FCU:  Get or Set the Frame Counter Uplink
1509
1510 AT+FCD:  Get or Set the Frame Counter Downlink
1511
1512 AT+CLASS:  Get or Set the Device Class
1513
1514 AT+JOIN:  Join network
1515
1516 AT+NJS:  Get the join status
1517
1518 AT+SENDB:  Send hexadecimal data along with the application port
1519
1520 AT+SEND:  Send text data along with the application port
1521
1522 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1523
1524 AT+RECV:  Print last received data in raw format
1525
1526 AT+VER:  Get current image version and Frequency Band
1527
1528 AT+CFM:  Get or Set the confirmation mode (0-1)
1529
1530 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1531
1532 AT+SNR:  Get the SNR of the last received packet
1533
1534 AT+RSSI:  Get the RSSI of the last received packet
1535
1536 AT+TDC:  Get or set the application data transmission interval in ms
1537
1538 AT+PORT:  Get or set the application port
1539
1540 AT+DISAT:  Disable AT commands
1541
1542 AT+PWORD: Set password, max 9 digits
1543
1544 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1545
1546 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1547
1548 AT+PDTA:  Print the sector data from start page to stop page
1549
1550 AT+PLDTA:  Print the last few sets of data
1551
1552 AT+CLRDTA:  Clear the storage, record position back to 1st
1553
1554 AT+SLEEP:  Set sleep mode
1555
1556 AT+EXT:  Get or Set external sensor model
1557
1558 AT+BAT:  Get the current battery voltage in mV
1559
1560 AT+CFG:  Print all configurations
1561
1562 AT+WMOD:  Get or Set Work Mode
1563
1564 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1565
1566 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1567
1568 AT+SETCNT:  Set the count at present
1569
1570 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1571
1572 AT+RPL:  Get or set response level
1573
1574 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1575
1576 AT+LEAPSEC:  Get or Set Leap Second
1577
1578 AT+SYNCMOD:  Get or Set time synchronization method
1579
1580 AT+SYNCTDC:  Get or set time synchronization interval in day
1581
1582 AT+PID:  Get or set the PID
1583
1584
1585 == 6.2 Where to use AT commands and Downlink commands ==
1586
1587
1588 **AT commands：**
1589
1590 [[image:image-20220620153708-1.png||_mstalt="429806" height="603" width="723"]]
1591
1592
1593 **Downlink commands:**
1594
1595
1596 (% style="color:blue" %)**TTN:**
1597
1598 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1599
1600
1601
1602 (% style="color:blue" %)**Helium：**
1603
1604 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1605
1606
1607
1608 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1609
1610
1611 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1612
1613
1614 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1615
1616
1617
1618 (% style="color:blue" %)**Aws:**
1619
1620 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1621
1622
1623 == 6.3 How to change the uplink interval？ ==
1624
1625
1626 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);"]]
1627
1628
1629 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1630
1631
1632 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1633
1634 [[image:1655802313617-381.png||_mstalt="293917"]]
1635
1636
1637 (((
1638 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.
1639 )))
1640
1641
1642 Input password and ATZ to activate LHT65N,As shown below:
1643
1644 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1645
1646
1647 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1648
1649
1650 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1651
1652
1653 (% 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.
1654
1655 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1656
1657
1658
1659 (% _mstmutation="1" style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1660
1661 First connect the four lines；(% style="display:none" %)
1662
1663 [[image:image-20220621170938-1.png||_mstalt="431340" height="413" width="419"]]，(% style="display:none" %)
1664
1665
1666 Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1667
1668 [[image:image-20220621170938-2.png||_mstalt="431704"]]
1669
1670
1671
1672 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1673
1674 [[image:image-20220615171334-6.png||_mstalt="431028"]]
1675
1676
1677 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1678
1679
1680 When this interface appears, it indicates that the download has been completed.
1681
1682 [[image:image-20220620160723-8.png||_mstalt="430703"]]
1683
1684
1685 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1686
1687
1688 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1689
1690
1691 [[image:image-20220623110706-1.png||_mstalt="427869"]]
1692
1693
1694 **UART Port of LHT65N:**
1695
1696 * (% class="mark" %)**PB0: RXD**
1697 * (% class="mark" %)**PB1: TXD**
1698 * (% class="mark" %)**GND**
1699
1700 [[image:image-20220623112117-4.png||_mstalt="428350" height="459" width="343"]]
1701
1702
1703 (((
1704 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.
1705 )))
1706
1707
1708 Input password and ATZ to activate LHT65N,As shown below:
1709
1710 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1711
1712
1713 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1714
1715
1716 [[image:image-20220623110706-1.png||_mstalt="427869"]]
1717
1718
1719 (% 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.
1720
1721 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1722
1723
1724
1725 (% _mstmutation="1" style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1726
1727 First connect the four lines；
1728
1729 [[image:image-20220623113959-5.png||_mstalt="433485" height="528" width="397"]]
1730
1731 Connect A8 and GND with Dupont wire for a while and then separate，enter reset mode
1732
1733
1734
1735 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1736
1737 [[image:image-20220615171334-6.png||_mstalt="431028"]]
1738
1739
1740 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1741
1742
1743 When this interface appears, it indicates that the download has been completed.
1744
1745 [[image:image-20220620160723-8.png||_mstalt="430703"]]
1746
1747
1748 Finally,Disconnect 3.3v，Connect A8 and GND with Dupont wire for a while and then separate，exit reset mode
1749
1750
1751 == 6.8 Why can't I see the datalog information ==
1752
1753
1754 ~1. The time is not aligned, and the correct query command is not used.
1755
1756 2. Decoder error, did not parse the datalog data, the data was filtered.
1757
1758
1759 = 7. Order Info =
1760
1761
1762 Part Number: (% style="color:#4f81bd" %)** LHT65N-XX-YY**
1763
1764 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1765
1766 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1767 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1768 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1769 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1770 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1771 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**US915**(%%): LoRaWAN US915 band
1772 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1773 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1774
1775 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1776
1777 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1778
1779 = 8. Packing Info =
1780
1781
1782 **Package Includes**:
1783
1784 * LHT65N Temperature & Humidity Sensor x 1
1785 * Optional external sensor
1786
1787 **Dimension and weight**:
1788
1789 * Device Size:  10 x 10 x 3.5 mm
1790 * Device Weight: 120.5g
1791
1792 = 9. Reference material =
1793
1794
1795 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
1796
1797 = 10. FCC Warning =
1798
1799
1800 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1801
1802 (1) This device may not cause harmful interference；
1803
1804 (2) this device must accept any interference received, including interference that may cause undesired operation.