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Version 265.2 by Xiaoling on 2023/08/08 11:53
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1 (% style="text-align:center" %)
2 [[image:image-20230808104154-2.png||height="752" width="501"]]
3
4
5 **Table of Contents:**
6
7 {{toc/}}
8
9
10
11
12
13 = 1. Introduction =
14
15 == 1.1 What is LHT65S LoRaWAN (% style="display:none" %) (%%)Temperature & Humidity Sensor ==
16
17
18 (((
19 The Dragino LHT65S (% style="display:none" %) (%%)Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% style="color:#4f81bd" %)**Temperature Sensor.**
20 )))
21
22 (((
23 The LHT65S 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.
24 )))
25
26 (((
27 LHT65S has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
28 )))
29
30 (((
31 LHT65S is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
32 )))
33
34 (((
35 LHT65S 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.
36 )))
37
38 (((
39 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
40 )))
41
42
43 == 1.2 Features ==
44
45
46 * LoRaWAN v1.0.3 Class A protocol
47 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
48 * AT Commands to change parameters
49 * Remote configure parameters via LoRaWAN Downlink
50 * Firmware upgradeable via program port
51 * Built-in 2400mAh battery for up to 10 years of use.
52 * Built-in Temperature & Humidity sensor
53 * Optional External Sensors
54 * Tri-color LED to indicate working status
55 * Datalog feature (Max 3328 records)
56
57 == 1.3 Specification ==
58
59
60 (% style="color:#037691" %)**Built-in Temperature Sensor:**
61
62 * Resolution: 0.01 °C
63 * Accuracy Tolerance : Typ ±0.3 °C
64 * Long Term Drift: < 0.02 °C/yr
65 * Operating Range: -40 ~~ 85 °C
66
67 (% style="color:#037691" %)**Built-in Humidity Sensor:**
68
69 * Resolution: 0.04 %RH
70 * Accuracy Tolerance : Typ ±3 %RH
71 * Long Term Drift: < 0.02 °C/yr
72 * Operating Range: 0 ~~ 96 %RH
73
74 (% style="color:#037691" %)**External Temperature Sensor:**
75
76 * Resolution: 0.0625 °C
77 * ±0.5°C accuracy from -10°C to +85°C
78 * ±2°C accuracy from -55°C to +125°C
79 * Operating Range: -55 °C ~~ 125 °C
80
81 = 2. Connect LHT65S to IoT Server =
82
83 == 2.1 How does LHT65S work? ==
84
85
86 (((
87 LHT65S is configured as LoRaWAN OTAA Class A mode by default. Each LHT65S is shipped with a worldwide unique set of OTAA keys. To use LHT65S in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65S.
88 )))
89
90 (((
91 If LHT65S is under the coverage of this LoRaWAN network. LHT65S can join the LoRaWAN network automatically. After successfully joining, LHT65S 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.
92 )))
93
94
95 == 2.2 How to Activate LHT65S? ==
96
97
98 (((
99 The LHT65S has two working modes:
100 )))
101
102 * (((
103 (% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65S doesn't have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
104 )))
105 * (((
106 (% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65S works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65S will be in STOP mode (IDLE mode), in STOP mode, LHT65S has the same power consumption as Deep Sleep mode. 
107 )))
108
109 (((
110 The LHT65S is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
111 )))
112
113
114 [[image:image-20230808114539-3.png||height="566" width="304"]]
115
116 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
117 |=(% 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**
118 |(% 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" %)(((
119 If LHT65S is already Joined to rhe LoRaWAN network, LHT65S will send an uplink packet, if LHT65S has external sensor connected,(% style="color:blue" %)**Blue led** (%%)will blink once. If LHT65S has not external sensor, (% style="color:red" %)**Red led**(%%) will blink once.
120 )))
121 |(% 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" %)(((
122 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will fast blink 5 times, LHT65S will enter working mode and start to JOIN LoRaWAN network.
123 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after join in network.
124 )))
125 |(% 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 LHT65S is in Deep Sleep Mode.
126
127 == 2.3 Example to join LoRaWAN network ==
128
129
130 (% class="wikigeneratedid" %)
131 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.
132
133 (% class="wikigeneratedid" %)
134 [[image:image-20230808114712-4.png||height="425" width="727"]]
135
136 (((
137 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 LHT65S. Next we need to add the LHT65S device in TTN V3:
138 )))
139
140
141 === 2.3.1 Step 1: Create Device n TTN ===
142
143
144 (((
145 Create a device in TTN V3 with the OTAA keys from LHT65S.
146 )))
147
148 (((
149 Each LHT65S is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
150 )))
151
152 [[image:image-20230426083319-1.png||height="258" width="556"]]
153
154 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
155
156 Add APP EUI in the application.
157
158
159 [[image:image-20220522232916-3.png||_mstalt="430495"]]
160
161
162 [[image:image-20220522232932-4.png||_mstalt="430157"]]
163
164
165 [[image:image-20220522232954-5.png||_mstalt="431847"]]
166
167
168
169 (% style="color:red" %)**Note: LHT65S use same payload as LHT65.**
170
171
172 [[image:image-20220522233026-6.png||_mstalt="429403"]]
173
174
175 Input APP EUI,  APP KEY and DEV EUI:
176
177
178 [[image:image-20220522233118-7.png||_mstalt="430430"]]
179
180
181 === 2.3.2 Step 2: Activate LHT65S by pressing the ACT button for more than 5 seconds. ===
182
183
184 (((
185 Use ACT button to activate LHT65S 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.
186 )))
187
188 [[image:image-20220522233300-8.png||_mstalt="428389" height="219" width="722"]]
189
190
191 == 2.4 Uplink Payload (Fport~=2) ==
192
193
194 (((
195 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
196 )))
197
198 (((
199 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
200 )))
201
202 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:390px" %)
203 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
204 **Size(bytes)**
205 )))|=(% style="width: 30px;background-color:#D9E2F3;color:#0070C0" %)(((
206 **2**
207 )))|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)(((
208 **2**
209 )))|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)(((
210 **2**
211 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
212 **1**
213 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
214 **4**
215 )))
216 |(% style="width:97px" %)(((
217 **Value**
218 )))|(% style="width:39px" %)(((
219 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
220 )))|(% style="width:100px" %)(((
221 (((
222 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
223 )))
224 )))|(% style="width:77px" %)(((
225 (((
226 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
227 )))
228 )))|(% style="width:47px" %)(((
229 [[Ext>>||anchor="H2.4.5Ext23"]] #
230 )))|(% style="width:51px" %)(((
231 [[Ext value>>||anchor="H2.4.6Extvalue"]]
232 )))
233
234 * The First 6 bytes: has fix meanings for every LHT65S.
235
236 * The 7th byte (EXT #): defines the external sensor model.
237
238 * 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.)
239
240 === 2.4.1 Decoder in TTN V3 ===
241
242
243 When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65S decoder in TTNv3 for friendly reading.
244
245 Below is the position to put the decoder and LHT65S decoder can be download from here: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
246
247
248 [[image:image-20220522234118-10.png||_mstalt="451464" height="353" width="729"]]
249
250
251 === 2.4.2 BAT-Battery Info ===
252
253
254 These two bytes of BAT include the battery state and the actually voltage.
255
256 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:477px" %)
257 |=(% style="width: 69px; background-color:#D9E2F3;color:#0070C0" %)(((
258 **Bit(bit)**
259 )))|=(% style="width: 253px;background-color:#D9E2F3;color:#0070C0" %)[15:14]|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)[13:0]
260 |(% style="width:66px" %)(((
261 **Value**
262 )))|(% style="width:250px" %)(((
263 BAT Status
264 00(b): Ultra Low ( BAT <= 2.50v)
265 01(b): Low (2.50v <=BAT <= 2.55v)
266 10(b): OK (2.55v <= BAT <=2.65v)
267 11(b): Good (BAT >= 2.65v)
268 )))|(% style="width:152px" %)Actually BAT voltage
269
270 **(b)stands for binary**
271
272
273 [[image:image-20220522235639-1.png||_mstalt="431392" height="139" width="727"]]
274
275
276 Check the battery voltage for LHT65S.
277
278 * BAT status=(0Xcba4>>14)&0xFF=11 (BIN) ，very good
279
280 * Battery Voltage =0xCBA4&0x3FFF=0x0BA4=2980mV
281
282 === 2.4.3 Built-in Temperature ===
283
284
285 [[image:image-20220522235639-2.png||_mstalt="431756" height="138" width="722"]]
286
287 * Temperature:  0x0ABB/100=27.47℃
288
289 [[image:image-20220522235639-3.png||_mstalt="432120"]]
290
291 * Temperature:  (0xF5C6-65536)/100=-26.18℃
292
293 (% style="display:none" %)
294
295 === 2.4.4 Built-in Humidity ===
296
297
298 [[image:image-20220522235639-4.png||_mstalt="432484" height="138" width="722"]]
299
300 * Humidity:    0x025C/10=60.4%
301
302 (% style="display:none" %)
303
304 === 2.4.5 Ext # ===
305
306
307 Bytes for External Sensor:
308
309 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:425px" %)
310 |=(% style="width: 102px; background-color:#D9E2F3;color:#0070C0" %)**EXT # **Value|=(% style="width: 323px;background-color:#D9E2F3;color:#0070C0" %)External Sensor Type
311 |(% style="width:102px" %)0x01|(% style="width:319px" %)Sensor E3, Temperature Sensor
312 |(% style="width:102px" %)0x09|(% style="width:319px" %)Sensor E3, Temperature Sensor, Datalog Mod
313
314 === 2.4.6 Ext value ===
315
316 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
317
318
319 [[image:image-20220522235639-5.png||_mstalt="432848"]]
320
321
322 * DS18B20 temp=0x0ADD/100=27.81℃
323
324 The last 2 bytes of data are meaningless
325
326
327
328 [[image:image-20220522235639-6.png||_mstalt="433212"]]
329
330
331 * External temperature= (0xF54F-65536)/100=-27.37℃
332
333 F54F :  (F54F & 8000 == 1) , temp = (F54F - 65536)/100 = 27.37℃
334
335 （0105 & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative）
336
337 The last 2 bytes of data are meaningless
338
339 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
340
341
342
343 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
344
345
346 (((
347 Timestamp mode is designed for LHT65S 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:
348 )))
349
350 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
351 |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
352 **Size(bytes)**
353 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
354 **2**
355 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
356 **2**
357 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
358 **2**
359 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
360 **1**
361 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
362 **4**
363 )))
364 |(% style="width:110px" %)(((
365 **Value**
366 )))|(% style="width:71px" %)(((
367 External temperature
368 )))|(% style="width:99px" %)(((
369 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
370 )))|(% style="width:132px" %)(((
371 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
372 )))|(% style="width:54px" %)(((
373 Status & Ext
374 )))|(% style="width:64px" %)(((
375 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
376 )))
377
378 * **Battery status & Built-in Humidity**
379
380 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:461px" %)
381 |=(% style="width: 69px;background-color:#D9E2F3;color:#0070C0" %)Bit(bit)|=(% style="width: 258px;background-color:#D9E2F3;color:#0070C0" %)[15:14]|=(% style="width: 134px;background-color:#D9E2F3;color:#0070C0" %)[11:0]
382 |(% style="width:67px" %)**Value**|(% style="width:256px" %)(((
383 BAT Status
384 00(b): Ultra Low ( BAT <= 2.50v)
385 01(b): Low  (2.50v <=BAT <= 2.55v)
386 10(b): OK   (2.55v <= BAT <=2.65v)
387 11(b): Good   (BAT >= 2.65v)
388 )))|(% style="width:132px" %)(((
389 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
390 )))
391
392 * **Status & Ext Byte**
393
394 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
395 |(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**Bits**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**7**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**6**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**5**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**[3:0]**
396 |(% 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)
397
398 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
399 * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65S will set this bit to 0 until got the time stamp from the application server.
400 * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65S will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
401
402 ==== 2.4.6.3 Ext~=6, ADC Sensor(use with E2 Cable) ====
403
404
405 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
406
407 be used to power the external ADC sensor; user can control the power on time for this
408
409 (% style="color:blue" %)**sensor by setting:**
410
411 **AT+EXT=6,timeout**  (% style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
412
413 **For example:**
414
415 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
416
417
418 Or use **downlink command A2** to set the same.
419
420 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
421
422 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.
423
424 [[image:image-20220628150112-1.png||_mstalt="427414" height="241" width="285"]]
425
426
427 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
428
429 [[image:image-20220628150714-4.png||_mstalt="431054"]]
430
431
432 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.
433
434
435 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
436
437 [[image:image-20220628151005-5.png||_mstalt="429546"]]
438
439
440 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
441
442 [[image:image-20220628151056-6.png||_mstalt="431873"]]
443
444
445 3) Within range
446
447 [[image:image-20220628151143-7.png||_mstalt="431210"]]
448
449
450
451 ==== 2.4.6.4 Ext~=2 TMP117 Sensor((% style="display:none" %) (%%)Since Firmware v1.3)(% style="display:none" %) (%%) ====
452
453 [[image:image-20230717151328-8.png]]
454
455 (% style="display:none" %) (%%)
456
457
458
459 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
460
461 [[image:image-20220906102307-7.png||_mstalt="430443"]]
462
463
464 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**(% style="color:blue; display:none" %)** **
465
466 The external cable NE2 can be use for MOD4 and MOD8
467
468
469
470 ==== 2.4.6.5 Ext~=11 SHT31 Sensor ((% style="display:none" %) (%%)Since Firmware v1.4.1) ====
471
472
473
474 [[image:image-20230717151245-7.png]]
475
476 (% style="color:blue" %)**Ext=11,Temperature & Humidity Sensor(SHT31)：**
477
478 [[image:SHT31.png]]
479
480
481
482 ==== 2.4.6.6 Ext~=4 Interrupt Mode(Since Firmware v1.3) ====
483
484
485 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65S will send an uplink when there is a trigger.**
486
487
488 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
489
490 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
491
492 In Open State, the power consumption is the same as if there is no probe
493
494 In Close state, the power consumption will be 3uA higher than normal.
495
496 [[image:image-20220906100852-1.png||_mstalt="429156" height="205" width="377"]]
497
498
499 Ext=4,Interrupt Sensor：
500
501 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:504px" %)
502 |(% style="width:101px" %)(((
503 **AT+EXT=4,1**
504 )))|(% style="width:395px" %)(((
505 **Sent uplink packet in both rising and falling interrupt**
506 )))
507 |(% style="width:101px" %)(((
508 **AT+EXT=4,2**
509 )))|(% style="width:395px" %)(((
510 **Sent uplink packet only in falling interrupt**
511 )))
512 |(% style="width:101px" %)(((
513 **AT+EXT=4,3**
514 )))|(% style="width:395px" %)(((
515 **Sent uplink packet only in rising interrupt**
516 )))
517
518 Trigger by falling edge:
519
520 [[image:image-20220906101145-2.png||_mstalt="428324"]]
521
522
523 Trigger by raising edge：
524
525 [[image:image-20220906101145-3.png||_mstalt="428688"]]
526
527
528
529 ==== 2.4.6.7 Ext~=8 Counting Mode(Since Firmware v1.3) ====
530
531
532 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65S will count for every interrupt and uplink periodically.**
533
534
535 (% 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 LHT65S.
536
537 [[image:image-20220906101320-4.png||_mstalt="427336" height="366" width="698"]]
538
539
540 (% style="color:blue" %)**Case 2**(%%):  Normal Flow Sensor: Such flow sensor has higher power consumption and is not suitable to be powered by LHT65S. It is powered by external power and output <3.3v pulse
541
542 [[image:image-20220906101320-5.png||_mstalt="427700" height="353" width="696"]]
543
544
545 Ext=8, Counting Sensor ( 4 bytes)：
546
547 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:330px" %)
548 |(% style="width:131px" %)(((
549 **AT+EXT=8,0**
550 )))|(% style="width:195px" %)(((
551 **Count at falling interrupt**
552 )))
553 |(% style="width:131px" %)(((
554 **AT+EXT=8,1**
555 )))|(% style="width:195px" %)(((
556 **Count at rising interrupt**
557 )))
558 |(% style="width:131px" %)(((
559 **AT+SETCNT=60**
560 )))|(% style="width:195px" %)(((
561 **Sent current count to 60**
562 )))
563
564 [[image:image-20220906101320-6.png||_mstalt="428064"]]
565
566
567 (% style="color:blue" %)**A2 downlink Command：**
568
569 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
570
571 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
572
573 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
574
575 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
576
577 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)
578
579
580 ==== 2.4.6.8 Ext~=10, E2 sensor (TMP117)with Unix Timestamp(Since firmware V1.3.2) ====
581
582
583 (((
584 Timestamp mode is designed for LHT65S with E2 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
585 )))
586
587 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
588 |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
589 **Size(bytes)**
590 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
591 **2**
592 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
593 **2**
594 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
595 **2**
596 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
597 **1**
598 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
599 **4**
600 )))
601 |(% style="width:110px" %)(((
602 **Value**
603 )))|(% style="width:71px" %)(((
604 External temperature
605 )))|(% style="width:99px" %)(((
606 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
607 )))|(% style="width:132px" %)(((
608 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
609 )))|(% style="width:54px" %)(((
610 Status & Ext
611 )))|(% style="width:64px" %)(((
612 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
613 )))
614
615 * **Battery status & Built-in Humidity**
616
617 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:461px" %)
618 |=(% style="width: 69px;background-color:#D9E2F3;color:#0070C0" %)Bit(bit)|=(% style="width: 258px;background-color:#D9E2F3;color:#0070C0" %)[15:14]|=(% style="width: 134px;background-color:#D9E2F3;color:#0070C0" %)[11:0]
619 |(% style="width:67px" %)**Value**|(% style="width:256px" %)(((
620 BAT Status
621 00(b): Ultra Low ( BAT <= 2.50v)
622 01(b): Low  (2.50v <=BAT <= 2.55v)
623 10(b): OK   (2.55v <= BAT <=2.65v)
624 11(b): Good   (BAT >= 2.65v)
625 )))|(% style="width:132px" %)(((
626 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
627 )))
628
629 * **Status & Ext Byte**
630
631 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
632 |(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**Bits**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**7**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**6**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**5**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**[3:0]**
633 |(% 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)
634
635 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
636 * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok, 0: N/A. After time SYNC request is sent, LHT65S will set this bit to 0 until got the time stamp from the application server.
637 * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65S will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
638
639 == 2.5 Show data on Datacake ==
640
641
642 (((
643 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:
644 )))
645
646
647 (((
648 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
649 )))
650
651 (((
652 (% 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.
653 )))
654
655
656 (((
657 Add Datacake:
658 )))
659
660
661 [[image:image-20220523000825-7.png||_mstalt="429884" height="262" width="583"]]
662
663
664
665 Select default key as Access Key:
666
667
668 [[image:image-20220523000825-8.png||_mstalt="430248" height="453" width="406"]]
669
670
671 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
672
673
674 [[image:image-20220523000825-9.png||_mstalt="430612" height="366" width="392"]]
675
676
677 [[image:image-20220523000825-10.png||_mstalt="450619" height="413" width="728"]]
678
679
680 == 2.6 Datalog Feature ==
681
682
683 (((
684 Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, LHT65S will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65S.
685 )))
686
687
688 === 2.6.1 Ways to get datalog via LoRaWAN ===
689
690
691 There are two methods:
692
693 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
694
695
696 (% style="color:blue" %)**Method 2: **(%%)Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65S will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65S 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.
697
698
699 (% style="color:red" %)**Note for method 2:**
700
701 * a) LHT65S will do an ACK check for data records sending to make sure every data arrive server.
702 * b) LHT65S will send data in **CONFIRMED Mode** when PNACKMD=1, but LHT65S 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 LHT65S gets a ACK, LHT65S will consider there is a network connection and resend all NONE-ACK Message.
703
704 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
705
706
707 [[image:image-20220703111700-2.png||_mstalt="426244" height="381" width="1119"]]
708
709
710 === 2.6.2 Unix TimeStamp ===
711
712
713 LHT65S uses Unix TimeStamp format based on
714
715
716 [[image:image-20220523001219-11.png||_mstalt="450450" height="97" width="627"]]
717
718
719
720 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
721
722 Below is the converter example
723
724 [[image:image-20220523001219-12.png||_mstalt="450827" height="298" width="720"]]
725
726
727 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
728
729
730 === 2.6.3 Set Device Time ===
731
732
733 (((
734 (% style="color:blue" %)**There are two ways to set device's time:**
735 )))
736
737 (((
738 **1.  Through LoRaWAN MAC Command (Default settings)**
739 )))
740
741 (((
742 User need to set SYNCMOD=1 to enable sync time via MAC command.
743 )))
744
745 (((
746 Once LHT65S Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to LHT65S. If LHT65S fails to get the time from the server, LHT65S will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
747 )))
748
749 (((
750 (% 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.**
751 )))
752
753
754 (((
755 **2. Manually Set Time**
756 )))
757
758 (((
759 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
760 )))
761
762
763 === 2.6.4 Poll sensor value ===
764
765
766 User can poll sensor value based on timestamps from the server. Below is the downlink command.
767
768 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:428px" %)
769 |(% style="background-color:#d9e2f3; color:#0070c0; width:58px" %)**1byte**|(% style="background-color:#d9e2f3; color:#0070c0; width:128px" %)**4bytes**|(% style="background-color:#d9e2f3; color:#0070c0; width:123px" %)**4bytes**|(% style="background-color:#d9e2f3; color:#0070c0; width:116px" %)**1byte**
770 |(% style="width:58px" %)31|(% style="width:128px" %)Timestamp start|(% style="width:123px" %)Timestamp end|(% style="width:116px" %)Uplink Interval
771
772 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.
773
774 For example, downlink command (% _mstmutation="1" %)**31 5FC5F350 5FC6 0160 05**(%%)
775
776 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00's data
777
778 Uplink Internal =5s, means LHT65S will send one packet every 5s. range 5~~255s.
779
780
781 === 2.6.5 Datalog Uplink payload ===
782
783
784 The Datalog poll reply uplink will use below payload format.
785
786 **Retrieval data payload:**
787
788 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
789 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
790 **Size(bytes)**
791 )))|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)**1**|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)**4**
792 |(% 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"]]
793
794 **Poll message flag & Ext:**
795
796 [[image:image-20221006192726-1.png||_mstalt="430508" height="112" width="754"]]
797
798 (% 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)
799
800 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
801
802 * Poll Message Flag is set to 1.
803
804 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
805
806 For example, in US915 band, the max payload for different DR is:
807
808 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
809
810 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
811
812 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
813
814 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
815
816 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
817
818
819 **Example:**
820
821 If LHT65S has below data inside Flash:
822
823 [[image:image-20230426171833-4.png]]
824
825
826 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
827
828 Where : Start time: 60065F97 = time 21/1/19 04:27:03
829
830 Stop time: 60066DA7= time 21/1/19 05:27:03
831
832
833 **LHT65S will uplink this payload.**
834
835 [[image:image-20220523001219-13.png||_mstalt="451204" height="421" style="text-align:left" width="727"]]
836
837
838 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
839
840 Where the first 11 bytes is for the first entry:
841
842 7FFF089801464160065F97
843
844 Ext sensor data=0x7FFF/100=327.67
845
846 Temp=0x088E/100=22.00
847
848 Hum=0x014B/10=32.6
849
850 poll message flag & Ext=0x41,means reply data,Ext=1
851
852 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
853
854
855 == 2.7 Alarm Mode & Feature "Multi sampling, one uplink" ==
856
857
858 (((
859 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.
860 )))
861
862 (((
863 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
864
865
866 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
867
868
869 **Internal GXHT30 temperature alarm(Acquisition time: fixed at one minute)**
870
871 (((
872 (% class="box infomessage" %)
873 (((
874 **AT+WMOD=3**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
875
876 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
877
878 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
879
880 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
881
882 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
883
884 **AT+LEDALARM=1** :       Enable LED visual Alarm.
885 )))
886 )))
887
888 (% style="color:#4f81bd" %)**Downlink Command:**
889
890 AT+WMOD=1:  A501  , AT+WMOD=0 :  A600
891
892 AT+CITEMP=1 : A60001
893
894 AT+ARTEMP=1,60  :  A70001003C
895
896 AT+ARTEMP=-16,60 :  A7FFF0003C
897
898 AT+LEDALARM=1  :  3601
899
900
901 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
902
903 Total bytes: 8 bytes
904
905 **Example: **AA0100010001003C
906
907 WMOD=01
908
909 CITEMP=0001
910
911 TEMPlow=0001
912
913 TEMPhigh=003C
914
915
916 **DS18B20 and TMP117 Threshold Alarm**
917
918 **~ AT+WMOD=1,60,-10,20**
919
920 (% style="color:#4f81bd" %)**Downlink Command:**
921
922 **Example: **A5013CFC180014
923
924 MOD=01
925
926 CITEMP=3C(S)
927
928 TEMPlow=FC18
929
930 TEMPhigh=0014
931
932
933 **Fluctuation alarm for DS18B20 and TMP117(Acquisition time: minimum 1s)**
934
935 **AT+WMOD=2,60,5** 
936
937 (% style="color:#4f81bd" %)**Downlink Command:**
938
939 **Example: **A5023C05
940
941 MOD=02
942
943 CITEMP=3C(S)
944
945 temperature fluctuation=05
946
947
948 **Sampling multiple times and uplink together**
949
950 **AT+WMOD=3,1,60,20,-16,32,1**   
951
952 Explain:
953
954 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3**
955 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
956 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.
957 * (% 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)
958 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
959 * (% 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.
960
961 (% style="color:#4f81bd" %)**Downlink Command:**
962
963 **Example: **A50301003C14FFF0002001
964
965 MOD=03
966
967 TEMP=DS18B20
968
969 CITEMP=003C(S)
970
971 Total number of acquisitions=14
972
973 TEMPlow=FFF0
974
975 TEMPhigh=0020
976
977 ARTEMP=01
978
979
980 **Uplink payload( Fport=3)**
981
982 **Example: CBEA**01**0992**//0A41//**09C4**
983
984 BatV=CBEA
985
986 TEMP=DS18B20
987
988 Temp1=0992  ~/~/ 24.50℃
989
990 Temp2=0A41  ~/~/ 26.25℃
991
992 Temp3=09C4  ~/~/ 25.00℃
993
994 (% style="color:red" %)**Note: This uplink will automatically select the appropriate DR according to the data length**
995
996 (% style="color:red" %)** In this mode, the temperature resolution of ds18b20 is 0.25℃ to save power consumption**
997 )))
998
999
1000 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
1001
1002
1003 (% class="box infomessage" %)
1004 (((
1005 (((
1006 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1007 )))
1008
1009 (((
1010 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1011 )))
1012
1013 (((
1014 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1015 )))
1016
1017 (((
1018 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
1019 )))
1020
1021 (((
1022 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1023 )))
1024 )))
1025
1026 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1027
1028 Total bytes: 8 bytes
1029
1030 **Example:**AA0100010001003C
1031
1032 WMOD=01
1033
1034 CITEMP=0001
1035
1036 TEMPlow=0001
1037
1038 TEMPhigh=003C
1039
1040
1041 == 2.8 LED Indicator ==
1042
1043
1044 The LHT65 has a triple color LED which for easy showing different stage .
1045
1046 While user press ACT button, the LED will work as per LED status with ACT button.
1047
1048 In a normal working state:
1049
1050 * For each uplink, the BLUE LED or RED LED will blink once.
1051 BLUE LED when external sensor is connected.
1052 * RED LED when external sensor is not connected
1053 * For each success downlink, the PURPLE LED will blink once
1054
1055
1056
1057 = 3. Sensors and Accessories =
1058
1059 == 3.1 E2 Extension Cable ==
1060
1061
1062 [[image:image-20220619092222-1.png||_mstalt="429533" height="182" width="188"]][[image:image-20220619092313-2.png||_mstalt="430222" height="182" width="173"]]
1063
1064
1065 **1m long breakout cable for LHT65S. Features:**
1066
1067 * (((
1068 Use for AT Command, works for both LHT52/LHT65S
1069 )))
1070 * (((
1071 Update firmware for LHT65S, works for both LHT52/LHT65S
1072 )))
1073 * (((
1074 Supports ADC mode to monitor external ADC
1075 )))
1076 * (((
1077 Supports Interrupt mode
1078 )))
1079 * (((
1080 Exposed All pins from the LHT65S Type-C connector.
1081
1082
1083
1084 )))
1085
1086 [[image:image-20220619092421-3.png||_mstalt="430547" height="371" width="529"]]
1087
1088
1089 == 3.2 E3 Temperature Probe ==
1090
1091
1092 [[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"]]
1093
1094
1095 Temperature sensor with 2 meters cable long
1096
1097 * Resolution: 0.0625 °C
1098 * ±0.5°C accuracy from -10°C to +85°C
1099 * ±2°C accuracy from -55°C to +125°C
1100 * Operating Range: -40 ~~ 125 °C
1101 * Working voltage 2.35v ~~ 5v
1102
1103 == 3.3 E31F Temperature Probe ==
1104
1105
1106 [[image:65N-E31F-1.jpg||height="169" width="170"]] [[image:image-20230717151424-9.png||height="221" width="204"]](% style="display:none" %)
1107
1108
1109 Temperature sensor with 1 meters cable long
1110
1111
1112 **Built-in Temperature Sensor:**
1113
1114 * Resolution: 0.01 °C
1115 * Accuracy Tolerance : Typ ±0.3 °C
1116 * Long Term Drift: < 0.02 °C/yr
1117 * Operating Range: -40 ~~ 80 °C
1118
1119 **Built-in Humidity Sensor:**
1120
1121 * Resolution: 0.04 % RH
1122 * Accuracy Tolerance : Typ ±3 % RH
1123 * Long Term Drift: < 0.02 °C/yr
1124 * Operating Range: 0 ~~ 96 % RH
1125
1126 **External Temperature Sensor :**
1127
1128 * Resolution: 0.01 °C
1129 * Accuracy Tolerance : Typical ±0.3 °C
1130 * Long Term Drift: < 0.02 °C/yr
1131 * Operating Range: -40 ~~ 125 °C
1132
1133 **External Humidity Sensor :**
1134
1135 * Resolution: 0.04 % RH
1136 * Accuracy Tolerance : Typ ±3 % RH
1137 * Long Term Drift: < 0.02 °C/yr
1138 * Operating Range: 0 ~~ 96 % RH
1139
1140 = 4. Configure LHT65S via AT command or LoRaWAN downlink =
1141
1142
1143 (((
1144 Use can configure LHT65S via AT Command or LoRaWAN Downlink.
1145 )))
1146
1147 * (((
1148 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1149 )))
1150
1151 * (((
1152 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1153 )))
1154
1155 (((
1156 There are two kinds of commands to configure LHT65S, they are:
1157 )))
1158
1159 * (((
1160 (% style="color:#4f81bd" %)**General Commands**.
1161 )))
1162
1163 (((
1164 These commands are to configure:
1165 )))
1166
1167 1. (((
1168 General system settings like: uplink interval.
1169 )))
1170 1. (((
1171 LoRaWAN protocol & radio-related commands.
1172 )))
1173
1174 (((
1175 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]]
1176 )))
1177
1178 * (((
1179 (% style="color:#4f81bd" %)**Commands special design for LHT65S**
1180 )))
1181
1182 (((
1183 These commands are only valid for LHT65S, as below:
1184 )))
1185
1186
1187 == 4.1 Set Transmit Interval Time ==
1188
1189
1190 Feature: Change LoRaWAN End Node Transmit Interval.
1191
1192
1193 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1194
1195 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:501px" %)
1196 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:166px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:180px" %)**Response**
1197 |(% style="width:155px" %)AT+TDC=?|(% style="width:162px" %)Show current transmit Interval|(% style="width:177px" %)30000 OK the interval is 30000ms = 30s
1198 |(% style="width:155px" %)AT+TDC=60000|(% style="width:162px" %)Set Transmit Interval|(% style="width:177px" %)OK Set transmit interval to 60000ms = 60 seconds
1199
1200 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1201
1202 Format: Command Code (0x01) followed by 3 bytes time value.
1203
1204 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1205
1206 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1207
1208 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1209
1210 == 4.2 Set External Sensor Mode ==
1211
1212
1213 Feature: Change External Sensor Mode.
1214
1215 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1216
1217 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:468px" %)
1218 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:153px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:160px" %)**Response**
1219 |(% style="width:155px" %)AT+EXT=?|(% style="width:151px" %)Get current external sensor mode|(% style="width:158px" %)1 OK External Sensor mode =1
1220 |(% style="width:155px" %)AT+EXT=1|(% colspan="2" rowspan="1" style="width:309px" %)Set external sensor mode to 1
1221 |(% style="width:155px" %)AT+EXT=9|(% colspan="2" rowspan="1" style="width:309px" %)Set to external DS18B20 with timestamp
1222
1223 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1224
1225 Total bytes: 2 ~~ 5 bytes
1226
1227 **Example:**
1228
1229 * 0xA201: Set external sensor type to E1
1230
1231 * 0xA209: Same as AT+EXT=9
1232
1233 * 0xA20702003c: Same as AT+SETCNT=60
1234
1235 == 4.3 Enable/Disable uplink Temperature probe ID ==
1236
1237
1238 (((
1239 Feature: If PID is enabled, device will send the temperature probe ID on:
1240 )))
1241
1242 * (((
1243 First Packet after OTAA Join
1244 )))
1245 * (((
1246 Every 24 hours since the first packet.
1247 )))
1248
1249 (((
1250 PID is default set to disable (0)
1251
1252
1253 )))
1254
1255 (% style="color:#4f81bd" %)**AT Command:**
1256
1257 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:381px" %)
1258 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:138px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:88px" %)**Response**
1259 |(% style="width:155px" %)AT+PID=1|(% style="width:136px" %)Enable PID uplink|(% style="width:86px" %)OK
1260
1261 (% style="color:#4f81bd" %)**Downlink Command:**
1262
1263 * **0xA800**  **~-~->** AT+PID=0
1264 * **0xA801**     **~-~->** AT+PID=1
1265
1266 == 4.4 Set Password ==
1267
1268
1269 Feature: Set device password, max 9 digits
1270
1271 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1272
1273 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:372px" %)
1274 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:128px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:89px" %)**Response**
1275 |(% style="width:155px" %)AT+PWORD=?|(% style="width:124px" %)Show password|(% style="width:86px" %)(((
1276 123456
1277
1278 OK
1279 )))
1280 |(% style="width:155px" %)AT+PWORD=999999|(% style="width:124px" %)Set password|(% style="width:86px" %)OK
1281
1282 (% style="color:#4f81bd" %)**Downlink Command:**
1283
1284 No downlink command for this feature.
1285
1286
1287 == 4.5 Quit AT Command ==
1288
1289
1290 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1291
1292 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1293
1294 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:433px" %)
1295 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:191px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:86px" %)**Response**
1296 |(% style="width:155px" %)AT+DISAT|(% style="width:191px" %)Quit AT Commands mode|(% style="width:86px" %)OK
1297
1298 (% style="color:#4f81bd" %)**Downlink Command:**
1299
1300 No downlink command for this feature.
1301
1302
1303 == 4.6 Set to sleep mode ==
1304
1305
1306 Feature: Set device to sleep mode
1307
1308 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1309 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1310
1311 (% style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1312
1313 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:513px" %)
1314 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:140px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:218px" %)**Response**
1315 |(% style="width:155px" %)AT+SLEEP|(% style="width:139px" %)Set to sleep mode|(% style="width:213px" %)(((
1316 Clear all stored sensor data…
1317
1318 OK
1319 )))
1320
1321 (% style="color:#4f81bd" %)**Downlink Command:**
1322
1323 * There is no downlink command to set to Sleep mode.
1324
1325 == 4.7 Set system time ==
1326
1327
1328 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1329
1330 (% style="color:#4f81bd" %)**AT Command:**
1331
1332 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:506px" %)
1333 |(% style="background-color:#d9e2f3; color:#0070c0; width:188px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:318px" %)**Function**
1334 |(% style="width:154px" %)AT+TIMESTAMP=1611104352|(% style="width:285px" %)(((
1335 OK
1336
1337 Set System time to 2021-01-20 00:59:12
1338 )))
1339
1340 (% style="color:#4f81bd" %)**Downlink Command:**
1341
1342 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1343
1344
1345 == 4.8 Set Time Sync Mode ==
1346
1347
1348 (((
1349 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1350 )))
1351
1352 (((
1353 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.
1354 )))
1355
1356 (% style="color:#4f81bd" %)**AT Command:**
1357
1358 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:475px" %)
1359 |(% style="background-color:#d9e2f3; color:#0070c0; width:156px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:315px" %)**Function**
1360 |(% style="width:156px" %)AT+SYNCMOD=1|(% style="width:315px" %)Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
1361
1362 (% style="color:#4f81bd" %)**Downlink Command:**
1363
1364 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1365 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1366
1367
1368 == 4.9 Set Time Sync Interval ==
1369
1370
1371 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1372
1373 (% style="color:#4f81bd" %)**AT Command:**
1374
1375 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:472px" %)
1376 |(% style="background-color:#d9e2f3; color:#0070c0; width:158px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:314px" %)**Function**
1377 |(% style="width:156px" %)AT+SYNCTDC=0x0A |(% style="width:311px" %)Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
1378
1379 (% style="color:#4f81bd" %)**Downlink Command:**
1380
1381 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1382
1383
1384 == 4.10 Print data entries base on page. ==
1385
1386
1387 Feature: Print the sector data from start page to stop page (max is 416 pages).
1388
1389 (% style="color:#4f81bd" %)**AT Command: AT+PDTA**
1390
1391 [[image:image-20230426164330-2.png]]
1392
1393 (% style="color:#4f81bd" %)**Downlink Command:**
1394
1395 No downlink commands for feature
1396
1397
1398 == 4.11 Print last few data entries. ==
1399
1400
1401 Feature: Print the last few data entries
1402
1403 (% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1404
1405 [[image:image-20230426164932-3.png]]
1406
1407 (% style="color:#4f81bd" %)**Downlink Command:**
1408
1409 No downlink commands for feature
1410
1411
1412 == 4.12 Clear Flash Record ==
1413
1414
1415 Feature: Clear flash storage for data log feature.
1416
1417 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1418
1419 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:503px" %)
1420 |(% style="background-color:#d9e2f3; color:#0070c0; width:157px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:137px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:209px" %)**Response**
1421 |(% style="width:155px" %)AT+CLRDTA |(% style="width:134px" %)Clear date record|(% style="width:209px" %)(((
1422 Clear all stored sensor data…
1423
1424 OK
1425 )))
1426
1427 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1428
1429 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1430
1431 == 4.13 Auto Send None-ACK messages ==
1432
1433
1434 Feature: LHT65S will wait for ACK for each uplink, If LHT65S doesn't get ACK from the IoT server, it will consider the message doesn't arrive server and store it. LHT65S keeps sending messages in normal periodically. Once LHT65S gets ACK from a server, it will consider the network is ok and start to send the not-arrive message.
1435
1436 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1437
1438 The default factory setting is 0
1439
1440 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:367px" %)
1441 |=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 87px;background-color:#D9E2F3;color:#0070C0" %)**Response**
1442 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1443
1444 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1445
1446 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1447
1448 == 4.14 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm(Since firmware 1.3.0) ==
1449
1450
1451 Feature: Set internal and external temperature sensor alarms.
1452
1453 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
1454 |=(% style="width: 250px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 200px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**Response**
1455 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1456
1457 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1458
1459 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1460
1461 0): Cancel
1462
1463 1): Threshold alarm
1464
1465 2): Fluctuation alarm
1466
1467
1468 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1469
1470 (% 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.**
1471
1472
1473 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1474
1475 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1476
1477 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1478
1479
1480 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.
1481
1482 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1483
1484 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1485
1486
1487 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1488
1489 0xA5 00 ~-~- AT+WMOD=0.
1490
1491 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 )
1492
1493 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))
1494
1495 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1496
1497 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.
1498
1499
1500 = 5. Battery & How to replace =
1501
1502 == 5.1 Battery Type ==
1503
1504
1505 (((
1506 LHT65S 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.
1507 )))
1508
1509 (((
1510 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1511
1512
1513 [[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]
1514 )))
1515
1516 The minimum Working Voltage for the LHT65S is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1517
1518
1519 == 5.2 Replace Battery ==
1520
1521
1522 LHT65S 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.
1523
1524 [[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]
1525
1526
1527 == 5.3 Battery Life Analyze ==
1528
1529
1530 (((
1531 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:
1532 [[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]]
1533 )))
1534
1535
1536 (((
1537 A full detail test report for LHT65S 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]]
1538 )))
1539
1540
1541 = 6. FAQ =
1542
1543 == 6.1 How to use AT Command? ==
1544
1545
1546 LHT65S 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.
1547
1548 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1549
1550
1551 **Connection:**
1552
1553 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1554 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1555 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1556
1557 (((
1558 (% _mstmutation="1" style="color:red" %)**(Note: This pin only corresponds to the lead-out board sold by dragino company. For the lead-out board purchased by yourself, please refer to the pin description in Chapter 6.6)**
1559
1560 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 LHT65S. 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.
1561 )))
1562
1563
1564 Input password and ATZ to activate LHT65S,As shown below:
1565
1566 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1567
1568
1569 AT Command List is as below:
1570
1571 AT+<CMD>? :  Help on <CMD>
1572
1573 AT+<CMD> :  Run <CMD>
1574
1575 AT+<CMD>=<value> :  Set the value
1576
1577 AT+<CMD>=? :  Get the value
1578
1579 AT+DEBUG:  Set more info output
1580
1581 ATZ:  Trig a reset of the MCU
1582
1583 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1584
1585 AT+DEUI:  Get or Set the Device EUI
1586
1587 AT+DADDR:  Get or Set the Device Address
1588
1589 AT+APPKEY:  Get or Set the Application Key
1590
1591 AT+NWKSKEY:  Get or Set the Network Session Key
1592
1593 AT+APPSKEY:  Get or Set the Application Session Key
1594
1595 AT+APPEUI:  Get or Set the Application EUI
1596
1597 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1598
1599 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1600
1601 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1602
1603 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1604
1605 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1606
1607 AT+RX2FQ:  Get or Set the Rx2 window frequency
1608
1609 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1610
1611 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1612
1613 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1614
1615 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1616
1617 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1618
1619 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1620
1621 AT+NWKID:  Get or Set the Network ID
1622
1623 AT+FCU:  Get or Set the Frame Counter Uplink
1624
1625 AT+FCD:  Get or Set the Frame Counter Downlink
1626
1627 AT+CLASS:  Get or Set the Device Class
1628
1629 AT+JOIN:  Join network
1630
1631 AT+NJS:  Get the join status
1632
1633 AT+SENDB:  Send hexadecimal data along with the application port
1634
1635 AT+SEND:  Send text data along with the application port
1636
1637 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1638
1639 AT+RECV:  Print last received data in raw format
1640
1641 AT+VER:  Get current image version and Frequency Band
1642
1643 AT+CFM:  Get or Set the confirmation mode (0-1)
1644
1645 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1646
1647 AT+SNR:  Get the SNR of the last received packet
1648
1649 AT+RSSI:  Get the RSSI of the last received packet
1650
1651 AT+TDC:  Get or set the application data transmission interval in ms
1652
1653 AT+PORT:  Get or set the application port
1654
1655 AT+DISAT:  Disable AT commands
1656
1657 AT+PWORD: Set password, max 9 digits
1658
1659 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1660
1661 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1662
1663 AT+PDTA:  Print the sector data from start page to stop page
1664
1665 AT+PLDTA:  Print the last few sets of data
1666
1667 AT+CLRDTA:  Clear the storage, record position back to 1st
1668
1669 AT+SLEEP:  Set sleep mode
1670
1671 AT+EXT:  Get or Set external sensor model
1672
1673 AT+BAT:  Get the current battery voltage in mV
1674
1675 AT+CFG:  Print all configurations
1676
1677 AT+WMOD:  Get or Set Work Mode
1678
1679 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1680
1681 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1682
1683 AT+SETCNT:  Set the count at present
1684
1685 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1686
1687 AT+RPL:  Get or set response level
1688
1689 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1690
1691 AT+LEAPSEC:  Get or Set Leap Second
1692
1693 AT+SYNCMOD:  Get or Set time synchronization method
1694
1695 AT+SYNCTDC:  Get or set time synchronization interval in day
1696
1697 AT+PID:  Get or set the PID
1698
1699
1700 == 6.2 Where to use AT commands and Downlink commands ==
1701
1702
1703 **AT commands: **
1704
1705 [[image:image-20220620153708-1.png||_mstalt="429806" height="603" width="723"]]
1706
1707
1708 **Downlink commands:**
1709
1710
1711 (% style="color:blue" %)**TTN:**
1712
1713 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1714
1715
1716
1717 (% style="color:blue" %)**Helium: **
1718
1719 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1720
1721
1722
1723 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1724
1725
1726 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1727
1728
1729 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1730
1731
1732
1733 (% style="color:blue" %)**Aws:**
1734
1735 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1736
1737
1738 == 6.3 How to change the uplink interval? ==
1739
1740
1741 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);"]]
1742
1743
1744 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1745
1746
1747 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1748
1749 [[image:1655802313617-381.png||_mstalt="293917"]]
1750
1751
1752 (((
1753 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 LHT65S. 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.
1754 )))
1755
1756
1757 Input password and ATZ to activate LHT65S, As shown below:
1758
1759 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1760
1761
1762 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1763
1764
1765 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1766
1767
1768 (% 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.
1769
1770 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1771
1772
1773
1774 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): wiring method.(% style="display:none" %)
1775
1776 First connect the four lines;(% style="display:none" %)
1777
1778 [[image:image-20220621170938-1.png||_mstalt="431340" height="413" width="419"]],(% style="display:none" %)
1779
1780
1781 Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1782
1783 [[image:image-20220621170938-2.png||_mstalt="431704"]]
1784
1785
1786
1787 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1788
1789 [[image:image-20220615171334-6.png||_mstalt="431028"]]
1790
1791
1792 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1793
1794
1795 When this interface appears, it indicates that the download has been completed.
1796
1797 [[image:image-20220620160723-8.png||_mstalt="430703"]]
1798
1799
1800 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1801
1802
1803 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1804
1805
1806 [[image:image-20220623110706-1.png||_mstalt="427869"]]
1807
1808
1809 **UART Port of LHT65S:**
1810
1811 * (% class="mark" %)**PB0: RXD**
1812 * (% class="mark" %)**PB1: TXD**
1813 * (% class="mark" %)**GND**
1814
1815 [[image:image-20220623112117-4.png||_mstalt="428350" height="459" width="343"]]
1816
1817
1818 (((
1819 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 LHT65S. 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.
1820 )))
1821
1822
1823 Input password and ATZ to activate LHT65S,As shown below:
1824
1825 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1826
1827
1828 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1829
1830
1831 [[image:image-20220623110706-1.png||_mstalt="427869"]]
1832
1833
1834 (% 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.
1835
1836 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1837
1838
1839
1840 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): wiring method.(% style="display:none" %)
1841
1842 First connect the four lines;
1843
1844 [[image:image-20220623113959-5.png||_mstalt="433485" height="528" width="397"]]
1845
1846 Connect A8 and GND with Dupont wire for a while and then separate, enter reset mode
1847
1848
1849
1850 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1851
1852 [[image:image-20220615171334-6.png||_mstalt="431028"]]
1853
1854
1855 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1856
1857
1858 When this interface appears, it indicates that the download has been completed.
1859
1860 [[image:image-20220620160723-8.png||_mstalt="430703"]]
1861
1862
1863 Finally,Disconnect 3.3v, Connect A8 and GND with Dupont wire for a while and then separate, exit reset mode
1864
1865
1866 == 6.8 Why can't I see the datalog information ==
1867
1868
1869 ~1. The time is not aligned, and the correct query command is not used.
1870
1871 2. Decoder error, did not parse the datalog data, the data was filtered.
1872
1873
1874 = 7. Order Info =
1875
1876
1877 Part Number: (% style="color:#4f81bd" %)** LHT65S-XX-YY**
1878
1879 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1880
1881 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1882 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1883 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1884 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1885 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1886 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**US915**(%%): LoRaWAN US915 band
1887 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1888 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1889
1890 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1891
1892 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1893
1894 = 8. Packing Info =
1895
1896
1897 **Package Includes**:
1898
1899 * LHT65S Temperature & Humidity Sensor x 1
1900 * Optional external sensor
1901
1902 = 9. Reference material =
1903
1904
1905 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
1906
1907 = 10. FCC Warning =
1908
1909
1910 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1911
1912 (1) This device may not cause harmful interference;
1913
1914 (2) this device must accept any interference received, including interference that may cause undesired operation.