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Version 198.1 by Bei Jinggeng on 2022/09/06 10:35
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9 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
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11 {{toc/}}
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15
16
17 = 1. Introduction =
18
19 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
20
21
22 (((
23 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.**
24 )))
25
26 (((
27 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.
28 )))
29
30 (((
31 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
32 )))
33
34 (((
35 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
36 )))
37
38 (((
39 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.
40 )))
41
42 (((
43 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
44 )))
45
46
47 == 1.2 Features ==
48
49
50 * Wall mountable
51 * LoRaWAN v1.0.3 Class A protocol
52 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
53 * AT Commands to change parameters
54 * Remote configure parameters via LoRaWAN Downlink
55 * Firmware upgradeable via program port
56 * Built-in 2400mAh battery for up to 10 years of use.
57 * Built-in Temperature & Humidity sensor
58 * Optional External Sensors
59 * Tri-color LED to indicate working status
60 * Datalog feature (Max 3328 records)
61
62
63 == 1.3 Specification ==
64
65
66 **Built-in Temperature Sensor:**
67
68 * Resolution: 0.01 °C
69 * Accuracy Tolerance : Typ ±0.3 °C
70 * Long Term Drift: < 0.02 °C/yr
71 * Operating Range: -40 ~~ 85 °C
72
73 **Built-in Humidity Sensor:**
74
75 * Resolution: 0.04 %RH
76 * Accuracy Tolerance : Typ ±3 %RH
77 * Long Term Drift: < 0.02 °C/yr
78 * Operating Range: 0 ~~ 96 %RH
79
80 **External Temperature Sensor:**
81
82 * Resolution: 0.0625 °C
83 * ±0.5°C accuracy from -10°C to +85°C
84 * ±2°C accuracy from -55°C to +125°C
85 * Operating Range: -55 °C ~~ 125 °C
86
87
88 = 2. Connect LHT65N to IoT Server =
89
90 == 2.1 How does LHT65N work? ==
91
92
93 (((
94 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.
95 )))
96
97 (((
98 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.
99 )))
100
101
102
103 == 2.2 How to Activate LHT65N? ==
104
105
106 (((
107 The LHT65N has two working modes:
108 )))
109
110 * (((
111 (% 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.
112 )))
113 * (((
114 (% 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. 
115 )))
116
117 (((
118 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
119 )))
120
121
122 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
123
124 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
125
126
127
128 == 2.3 Example to join LoRaWAN network ==
129
130
131 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
132 This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure.
133
134 (% _mstvisible="1" class="wikigeneratedid" %)
135 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
136
137
138 (((
139 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:
140 )))
141
142
143
144 === 2.3.1 Step 1: Create Device n TTN ===
145
146
147 (((
148 Create a device in TTN V3 with the OTAA keys from LHT65N.
149 )))
150
151 (((
152 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
153 )))
154
155 [[image:image-20220617150003-1.jpeg]]
156
157 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
158
159 Add APP EUI in the application.
160
161
162 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
163
164
165 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
166
167
168 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
169
170
171
172 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
173
174
175 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
176
177
178 Input APP EUI,  APP KEY and DEV EUI:
179
180
181 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
182
183
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" _mstvisible="3" height="219" width="722"]]
194
195
196
197
198 == 2.4 Uplink Payload ==
199
200
201 (((
202 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% _mstvisible="3" style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
203 )))
204
205 (((
206 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
207 )))
208
209 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
210 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
211 (((
212 (% _mstvisible="6" %)
213 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
214 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
215 (((
216 (% _mstvisible="6" %)
217 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
218 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
219 (((
220 (% _mstvisible="6" %)
221 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
222 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
223 (((
224 (% _mstvisible="6" %)
225 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
226 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
227 (((
228 (% _mstvisible="6" %)
229 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
230 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
231 (((
232 (% _mstvisible="6" %)
233 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
234 )))
235 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
236 (((
237 (% _mstvisible="6" %)
238 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
239 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
240 (((
241 (% _mstvisible="6" %)
242 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
243 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
244 (((
245 (% _mstvisible="6" %)
246 (((
247 (% _mstvisible="7" %)
248 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
249 )))
250 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
251 (((
252 (% _mstvisible="6" %)
253 (((
254 (% _mstvisible="7" %)
255 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
256 )))
257
258 (% _mstvisible="6" %)
259 (((
260 (% _mstvisible="7" %)
261 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
262 )))
263 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
264 (((
265 (% _mstvisible="6" %)
266 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
267 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
268 (((
269 (% _mstvisible="6" %)
270 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
271 )))
272
273 * The First 6 bytes: has fix meanings for every LHT65N.
274 * The 7th byte (EXT #): defines the external sensor model.
275 * The 8(% _msthash="734578" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) ~~ 11(% _msthash="734579" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) byte: the value for external sensor value. The definition is based on external sensor type. (If EXT=0, there won't be these four bytes.)
276
277
278 === 2.4.1 Decoder in TTN V3 ===
279
280
281 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.
282
283 Below is the position to put the decoder and LHT65N decoder can be download from here:
284
285
286 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
287
288
289 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
290
291
292
293
294 === 2.4.2 BAT-Battery Info ===
295
296
297 These two bytes of BAT include the battery state and the actually voltage
298
299 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
300
301
302 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
303
304
305 Check the battery voltage for LHT65N.
306
307 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
308 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
309
310
311 === 2.4.3 Built-in Temperature ===
312
313
314 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
315
316 * Temperature:  0x0ABB/100=27.47℃
317
318 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
319
320 * Temperature:  (0xF5C6-65536)/100=-26.18℃
321
322
323 === 2.4.4 Built-in Humidity ===
324
325
326 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
327
328 * Humidity:    0x025C/10=60.4%
329
330
331 === 2.4.5 Ext # ===
332
333
334 Bytes for External Sensor:
335
336 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
337
338
339
340 === 2.4.6 Ext value ===
341
342
343 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
344
345
346 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
347
348
349 * DS18B20 temp=0x0ADD/100=27.81℃
350
351 The last 2 bytes of data are meaningless
352
353 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
354
355
356 * External temperature= (0xF54F-65536)/100=-27.37℃
357
358 The last 2 bytes of data are meaningless
359
360 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
361
362
363
364 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
365
366
367 (((
368 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:
369 )))
370
371 (((
372
373 )))
374
375 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
376 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
377 (((
378 (% _mstvisible="6" %)
379 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
380 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
381 (((
382 (% _mstvisible="6" %)
383 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
384 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
385 (((
386 (% _mstvisible="6" %)
387 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
388 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
389 (((
390 (% _mstvisible="6" %)
391 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
392 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
393 (((
394 (% _mstvisible="6" %)
395 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
396 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
397 (((
398 (% _mstvisible="6" %)
399 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
400 )))
401 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
402 (((
403 (% _mstvisible="6" %)
404 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
405 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
406 (((
407 (% _mstvisible="6" %)
408 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
409 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
410 (((
411 (% _mstvisible="6" %)
412 (((
413 (% _mstvisible="7" %)
414 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
415 )))
416
417 (% _mstvisible="6" %)
418 (((
419 (% _mstvisible="7" %)
420 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
421 )))
422 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
423 (((
424 (% _mstvisible="6" %)
425 (((
426 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
427 BAT Status &
428 )))
429
430 (% _mstvisible="6" %)
431 (((
432 (% _mstvisible="7" %)
433 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
434 )))
435 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
436 (((
437 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
438 Status & Ext
439 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
440 (((
441 (% _mstvisible="6" %)
442 (((
443 (% _mstvisible="7" %)
444 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
445 )))
446 )))
447
448 (% _mstvisible="1" %)
449 * (% _msthash="2539669" _msttexthash="857922" _mstvisible="3" %)**Battery status & **(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)**Built-in Humidity**
450
451 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
452 (% _mstvisible="3" %)|=(% _msthash="1230918" _msttexthash="93158" _mstvisible="4" style="width: 65px;" %)Bit(bit)|=(% _msthash="1230919" _msttexthash="57954" _mstvisible="4" style="width: 267px;" %)[15:14]|=(% _msthash="1230920" _msttexthash="48022" _mstvisible="4" style="width: 134px;" %)[11:0]
453 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
454 (((
455 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
456 BAT Status
457
458 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
459 00(b): Ultra Low ( BAT <= 2.50v)
460
461 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
462 01(b): Low  (2.50v <=BAT <= 2.55v)
463
464 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
465 10(b): OK   (2.55v <= BAT <=2.65v)
466
467 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
468 11(b): Good   (BAT >= 2.65v)
469 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
470 (((
471 (% _mstvisible="6" %)
472 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
473
474 (% _mstvisible="6" %)
475
476 )))
477
478 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
479
480 (% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
481 |(% 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]**
482 |(% 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)
483
484 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
485 * (% 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.
486 * (% 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)
487
488
489 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
490
491
492 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
493
494 be used to power the external ADC sensor; user can control the power on time for this
495
496 sensor by setting:
497
498 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
499
500 For example:
501
502 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
503
504
505 Or use **downlink command A2** to set the same.
506
507 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
508
509 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.
510
511 [[image:image-20220628150112-1.png||height="241" width="285"]]
512
513
514 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
515
516 [[image:image-20220628150714-4.png]]
517
518
519 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.
520
521 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
522
523 [[image:image-20220628151005-5.png]]
524
525
526 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
527
528 [[image:image-20220628151056-6.png]]
529
530
531 3) Within range
532
533 [[image:image-20220628151143-7.png]]
534
535
536 ==== ====
537
538 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （since v1.3） ====
539
540 Ext=2,Temperature Sensor(TMP117)：
541
542 [[image:image-20220906102307-7.png]]
543
544
545 **Interrupt Mode and Counting Mode**
546
547 The external cable NE2 can be use for MOD4 and MOD8
548
549
550
551 ==== 2.4.6.5 Ext~=4 Interrupt Mode （since v1.3） ====
552
553 **Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
554
555 **Interrupt Mode can be used to connect to external interrupt sensors such as:**
556
557 Case 1:Door Sensor. 3.3v Out for such sensor is just to detect Open/Close.
558
559 In Open State, the power consumption is the same as if there is no probe
560
561 In Close state, the power consumption will be 3uA higher than normal.
562
563 [[image:image-20220906100852-1.png||height="205" width="377"]]
564
565 Ext=4,Interrupt Sensor：
566
567 (% border="8" cellpadding="4" cellspacing="4" style="height:8px; width:662px" %)
568 |(((
569 AT+EXT=4,1
570 )))|(% style="width:503px" %)(((
571 Sent uplink packet in both rising and falling interrupt
572 )))
573 |(((
574 AT+EXT=4,2
575 )))|(% style="width:503px" %)(((
576 Sent uplink packet only in falling interrupt
577 )))
578 |(((
579 AT+EXT=4,3
580 )))|(% style="width:503px" %)(((
581 Sent uplink packet only in rising interrupt
582 )))
583
584 Trigger by falling edge:
585
586 [[image:image-20220906101145-2.png]]
587
588
589 Trigger by raising edge：
590
591 [[image:image-20220906101145-3.png]]
592
593
594 ==== ====
595
596 ==== 2.4.6.6 Ext~=8 Counting Mode（since v1.3） ====
597
598 **Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
599
600
601 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.
602
603 [[image:image-20220906101320-4.png||height="366" width="698"]]
604
605 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
606
607 [[image:image-20220906101320-5.png||height="353" width="696"]]
608
609 Ext=8, Counting Sensor ( 4 bytes)：
610
611 (% border="8" cellpadding="4" cellspacing="4" style="height:8px; width:662px" %)
612 |(((
613 AT+EXT=8,0
614 )))|(% style="width:503px" %)(((
615 Count at falling interrupt
616 )))
617 |(((
618 AT+EXT=8,1
619 )))|(% style="width:503px" %)(((
620 Count at rising interrupt
621 )))
622 |(((
623 AT+SETCNT=60
624 )))|(% style="width:503px" %)(((
625 Sent current count to 60
626 )))
627
628
629 [[image:image-20220906101320-6.png]]
630
631
632 A2 downlink Command：
633
634 A2 02: Same as AT+EXT=2 (AT+EXT= second byte)
635
636 A2 06 01 F4: Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
637
638 A2 04 02: Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
639
640 A2 08 01 00: Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
641
642 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)
643
644
645
646
647 **Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm.**
648
649
650 AT+WMOD=parameter1,parameter2,parameter3,parameter4
651
652 Parameter 1: Alarm mode:
653
654 0): Cancel
655
656 1): Threshold alarm
657
658 2): Fluctuation alarm
659
660
661 Parameter 2: Sampling time. Unit: seconds, up to 255 seconds.
662
663 **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.**
664
665
666 Parameter 3 and parameter 4:
667
668 1):If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
669
670 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
671
672
673 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.
674
675 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
676
677 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
678
679
680 Downlink:
681
682 0xA5 00 ~-~- AT+WMOD=0.
683
684 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 )
685
686 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
687
688 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.
689
690
691 == 2.5 Show data on Datacake ==
692
693
694 (((
695 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:
696 )))
697
698 (((
699
700 )))
701
702 (((
703 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
704 )))
705
706 (((
707 (% 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.
708 )))
709
710 (((
711
712 )))
713
714 (((
715 Add Datacake:
716 )))
717
718
719 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
720
721
722
723 Select default key as Access Key:
724
725
726 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
727
728
729 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
730
731
732 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
733
734
735 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
736
737
738
739 == 2.6 Datalog Feature ==
740
741
742 (((
743 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.
744 )))
745
746
747
748 === 2.6.1 Ways to get datalog via LoRaWAN ===
749
750
751 There are two methods:
752
753 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
754 1. 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 message and store the sensor data, and it will send all messages (10s interval) after the network recovery. note: a) LHT65N will do ack check for data records sending to make sure every data arrive server. b) LHT65N will send data in CONFIRMED Mode when PNACKMD=1, but it won't re-transmit the same packet , it will just mark it as NONE-ACK and resend after network is detected.
755
756 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
757
758 [[image:image-20220703111700-2.png||height="381" width="1119"]]
759
760
761 === 2.6.2 Unix TimeStamp ===
762
763
764 LHT65N uses Unix TimeStamp format based on
765
766
767 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
768
769
770
771 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
772
773 Below is the converter example
774
775 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
776
777 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
778
779
780
781 === 2.6.3 Set Device Time ===
782
783
784 (((
785 There are two ways to set device's time:
786 )))
787
788 (((
789 **~1. Through LoRaWAN MAC Command (Default settings)**
790 )))
791
792 (((
793 User need to set SYNCMOD=1 to enable sync time via MAC command.
794 )))
795
796 (((
797 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).
798 )))
799
800 (((
801 (% 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.**
802 )))
803
804 (((
805
806 )))
807
808 (((
809 **2. Manually Set Time**
810 )))
811
812 (((
813 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
814 )))
815
816
817
818 === 2.6.4 Poll sensor value ===
819
820
821 User can poll sensor value based on timestamps from the server. Below is the downlink command.
822
823 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
824
825
826 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.
827
828 For example, downlink command **31 5FC5F350 5FC6 0160 05**
829
830 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
831
832 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
833
834
835
836 === 2.6.5 Datalog Uplink payload ===
837
838
839 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
840 The Datalog poll reply uplink will use below payload format.
841
842 (% _mstvisible="1" %)
843 (((
844 (% _mstvisible="2" %)
845
846
847 (% _mstvisible="2" %)
848 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
849 )))
850
851 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
852 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
853 (((
854 (% _mstvisible="6" %)
855 (((
856 (% _mstvisible="7" %)
857 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
858 )))
859 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
860 (((
861 (% _mstvisible="6" %)
862 (((
863 (% _mstvisible="7" %)
864 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
865 )))
866 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
867 (((
868 (% _mstvisible="6" %)
869 (((
870 (% _mstvisible="7" %)
871 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
872 )))
873 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
874 (((
875 (% _mstvisible="6" %)
876 (((
877 (% _mstvisible="7" %)
878 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
879 )))
880 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
881 (((
882 (% _mstvisible="6" %)
883 (((
884 (% _mstvisible="7" %)
885 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
886 )))
887 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
888 (((
889 (% _mstvisible="6" %)
890 (((
891 (% _mstvisible="7" %)
892 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
893 )))
894 )))
895 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
896 (((
897 (% _mstvisible="6" %)
898 (((
899 (% _mstvisible="7" %)
900 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
901 )))
902 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
903 (((
904 (% _mstvisible="6" %)
905 (((
906 (% _mstvisible="7" %)
907 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
908 )))
909 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
910 (((
911 (% _mstvisible="6" %)
912 (((
913 (% _mstvisible="7" %)
914 (((
915 (% _mstvisible="8" %)
916 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
917 )))
918 )))
919
920 (% _mstvisible="6" %)
921 (((
922 (% _mstvisible="7" %)
923 (((
924 (% _mstvisible="8" %)
925 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
926 )))
927 )))
928 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
929 (((
930 (% _mstvisible="6" %)
931 (((
932 (% _mstvisible="7" %)
933 (((
934 (% _mstvisible="8" %)
935 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
936 )))
937 )))
938
939 (% _mstvisible="6" %)
940 (((
941 (% _mstvisible="7" %)
942 (((
943 (% _mstvisible="8" %)
944 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
945 )))
946 )))
947 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
948 (((
949 (% _mstvisible="6" %)
950 (((
951 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
952 Poll message flag & Ext
953 )))
954 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
955 (((
956 (% _mstvisible="6" %)
957 (((
958 (% _mstvisible="7" %)
959 (((
960 (% _mstvisible="8" %)
961 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
962 )))
963 )))
964
965 (% _mstvisible="6" %)
966 (((
967 (% _mstvisible="7" %)
968 (((
969 (% _mstvisible="8" %)
970
971 )))
972 )))
973 )))
974
975 (% _mstvisible="1" %)
976 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
977
978 (% _mstvisible="1" %)
979 [[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
980
981 (% _mstvisible="1" %)
982 (((
983 (% _mstvisible="2" %)
984 (((
985 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
986 (((
987 Poll Message Flag: 1: This message is a poll message reply.
988 )))
989 )))
990 )))
991
992 (% _mstvisible="1" %)
993 * (% _mstvisible="3" %)
994 (((
995 (% _mstvisible="4" %)
996 (((
997 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
998 (((
999 Poll Message Flag is set to 1.
1000 )))
1001 )))
1002 )))
1003 * (% _mstvisible="3" %)
1004 (((
1005 (% _mstvisible="4" %)
1006 (((
1007 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
1008 (((
1009 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
1010 )))
1011 )))
1012 )))
1013
1014 (% _mstvisible="1" %)
1015 (((
1016 (% _mstvisible="2" %)
1017 (((
1018 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1019 (((
1020
1021 )))
1022
1023 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1024 (((
1025 For example, in US915 band, the max payload for different DR is:
1026 )))
1027 )))
1028 )))
1029
1030 (% _mstvisible="1" %)
1031 (((
1032 (% _mstvisible="2" %)
1033 (((
1034 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
1035 (((
1036 a) DR0: max is 11 bytes so one entry of data
1037 )))
1038 )))
1039 )))
1040
1041 (% _mstvisible="1" %)
1042 (((
1043 (% _mstvisible="2" %)
1044 (((
1045 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
1046 (((
1047 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
1048 )))
1049 )))
1050 )))
1051
1052 (% _mstvisible="1" %)
1053 (((
1054 (% _mstvisible="2" %)
1055 (((
1056 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
1057 (((
1058 c) DR2: total payload includes 11 entries of data
1059 )))
1060 )))
1061 )))
1062
1063 (% _mstvisible="1" %)
1064 (((
1065 (% _mstvisible="2" %)
1066 (((
1067 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
1068 (((
1069 d) DR3: total payload includes 22 entries of data.
1070 )))
1071 )))
1072 )))
1073
1074 (% _mstvisible="1" %)
1075 (((
1076 (% _mstvisible="2" %)
1077 (((
1078 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
1079 (((
1080 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
1081 )))
1082 )))
1083 )))
1084
1085
1086 (% _mstvisible="1" style="text-align: left;" %)
1087 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
1088
1089 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
1090 If LHT65N has below data inside Flash:
1091
1092 (% _mstvisible="1" %)
1093 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
1094
1095 (% _mstvisible="1" %)
1096 (((
1097 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
1098 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
1099 )))
1100
1101 (% _mstvisible="1" %)
1102 (((
1103 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
1104 Where : Start time: 60065F97 = time 21/1/19 04:27:03
1105 )))
1106
1107 (% _mstvisible="1" %)
1108 (((
1109 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
1110 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
1111 )))
1112
1113 (% _mstvisible="1" %)
1114 (((
1115 (% _mstvisible="2" %)
1116
1117 )))
1118
1119 (% _mstvisible="1" %)
1120 (((
1121 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
1122 LHT65N will uplink this payload.
1123 )))
1124
1125 (% _mstvisible="1" %)
1126 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
1127
1128 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
1129 (((
1130 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
1131 )))
1132
1133 (% _msthash="315237" _msttexthash="1385839" %)
1134 (((
1135 Where the first 11 bytes is for the first entry:
1136 )))
1137
1138 (% _msthash="315238" _msttexthash="274846" %)
1139 (((
1140 7FFF089801464160065F97
1141 )))
1142
1143 (% _msthash="315239" _msttexthash="617435" %)
1144 (((
1145 Ext sensor data=0x7FFF/100=327.67
1146 )))
1147
1148 (% _msthash="315240" _msttexthash="270543" %)
1149 (((
1150 Temp=0x0898/100=22.00
1151 )))
1152
1153 (% _msthash="315241" _msttexthash="211783" %)
1154 (((
1155 Hum=0x0146/10=32.6
1156 )))
1157
1158 (% _msthash="315242" _msttexthash="1569776" %)
1159 (((
1160 poll message flag & Ext=0x41,means reply data,Ext=1
1161 )))
1162
1163 (% _msthash="315243" _msttexthash="1120509" %)
1164 (((
1165 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
1166 )))
1167
1168
1169
1170 == 2.7 Alarm Mode ==
1171
1172
1173 (((
1174 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.
1175 )))
1176
1177 (((
1178 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1179
1180
1181 )))
1182
1183 (((
1184 **AT COMMAND FOR ALARM MODE:**
1185 )))
1186
1187 (% _mstvisible="1" class="box infomessage" %)
1188 (((
1189 (((
1190 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
1191 )))
1192
1193 (((
1194 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1195 )))
1196
1197 (((
1198 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1199 )))
1200
1201 (((
1202 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1203 )))
1204
1205 (((
1206 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1207 )))
1208 )))
1209
1210 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1211
1212 Total bytes: 8 bytes
1213
1214 **Example:**AA0100010001003C
1215
1216 WMOD=01
1217
1218 CITEMP=0001
1219
1220 TEMPlow=0001
1221
1222 TEMPhigh=003C
1223
1224
1225
1226 == 2.8 LED Indicator ==
1227
1228
1229 The LHT65 has a triple color LED which for easy showing different stage .
1230
1231 While user press ACT button, the LED will work as per LED status with ACT button.
1232
1233 In a normal working state:
1234
1235 * For each uplink, the BLUE LED or RED LED will blink once.
1236 BLUE LED when external sensor is connected.
1237 * RED LED when external sensor is not connected
1238 * For each success downlink, the PURPLE LED will blink once
1239
1240
1241 == 2.9 installation ==
1242
1243
1244 (% _mstvisible="1" %)
1245 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1246
1247
1248
1249 = 3. Sensors and Accessories =
1250
1251 == 3.1 E2 Extension Cable ==
1252
1253
1254 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1255
1256
1257 **1m long breakout cable for LHT65N. Features:**
1258
1259 * (((
1260 Use for AT Command， works for both LHT52/LHT65N
1261 )))
1262 * (((
1263 Update firmware for LHT65N, works for both LHT52/LHT65N
1264 )))
1265 * (((
1266 Supports ADC mode to monitor external ADC
1267 )))
1268 * (((
1269 Supports Interrupt mode
1270 )))
1271 * (((
1272 Exposed All pins from the LHT65N Type-C connector.
1273
1274
1275
1276 )))
1277
1278 [[image:image-20220619092421-3.png||height="371" width="529"]]
1279
1280
1281
1282
1283 == 3.2 E3 Temperature Probe ==
1284
1285
1286 [[image:image-20220515080154-4.png||_mstalt="434681" _mstvisible="3" alt="photo-20220515080154-4.png" height="182" width="161"]] [[image:image-20220515080330-5.png||_mstalt="428792" _mstvisible="3" height="201" width="195"]]
1287
1288
1289 Temperature sensor with 2 meters cable long
1290
1291 * Resolution: 0.0625 °C
1292 * ±0.5°C accuracy from -10°C to +85°C
1293 * ±2°C accuracy from -55°C to +125°C
1294 * Operating Range: -40 ~~ 125 °C
1295 * Working voltage 2.35v ~~ 5v
1296
1297
1298 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1299
1300
1301 (((
1302 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1303 )))
1304
1305 * (((
1306 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1307 )))
1308
1309 * (((
1310 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1311 )))
1312
1313 (((
1314 There are two kinds of commands to configure LHT65N, they are:
1315 )))
1316
1317 * (((
1318 (% style="color:#4f81bd" %)**General Commands**.
1319 )))
1320
1321 (((
1322 These commands are to configure:
1323 )))
1324
1325 1. (((
1326 General system settings like: uplink interval.
1327 )))
1328 1. (((
1329 LoRaWAN protocol & radio-related commands.
1330 )))
1331
1332 (((
1333 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]]
1334 )))
1335
1336 * (((
1337 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1338 )))
1339
1340 (((
1341 These commands are only valid for LHT65N, as below:
1342 )))
1343
1344
1345
1346 == 4.1 Set Transmit Interval Time ==
1347
1348
1349 Feature: Change LoRaWAN End Node Transmit Interval.
1350
1351
1352 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1353
1354 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1355
1356
1357 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1358
1359 Format: Command Code (0x01) followed by 3 bytes time value.
1360
1361 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1362
1363 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1364
1365 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1366
1367
1368 == 4.2 Set External Sensor Mode ==
1369
1370
1371 Feature: Change External Sensor Mode.
1372
1373
1374 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1375
1376 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1377
1378
1379 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1380
1381 Total bytes: 2 ~~ 5 bytes
1382
1383 **Example:**
1384
1385 * 0xA201: Set external sensor type to E1
1386
1387 * 0xA209: Same as AT+EXT=9
1388
1389 * 0xA20702003c: Same as AT+SETCNT=60
1390
1391
1392 == 4.3 Enable/Disable uplink Temperature probe ID ==
1393
1394
1395 (((
1396 Feature: If PID is enabled, device will send the temperature probe ID on:
1397 )))
1398
1399 * (((
1400 First Packet after OTAA Join
1401 )))
1402 * (((
1403 Every 24 hours since the first packet.
1404 )))
1405
1406 (((
1407 PID is default set to disable (0)
1408
1409
1410 )))
1411
1412 (% style="color:#4f81bd" %)**AT Command:**
1413
1414 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1415
1416
1417 (% style="color:#4f81bd" %)**Downlink Command:**
1418
1419 * **0xA800**  **~-~->** AT+PID=0
1420 * **0xA801**     **~-~->** AT+PID=1
1421
1422
1423 == 4.4 Set Password ==
1424
1425
1426 Feature: Set device password, max 9 digits
1427
1428
1429 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1430
1431 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1432
1433
1434 (% style="color:#4f81bd" %)**Downlink Command:**
1435
1436 No downlink command for this feature.
1437
1438
1439
1440 == 4.5 Quit AT Command ==
1441
1442
1443 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1444
1445
1446 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1447
1448 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1449
1450
1451 (% style="color:#4f81bd" %)**Downlink Command:**
1452
1453 No downlink command for this feature.
1454
1455
1456
1457 == 4.6 Set to sleep mode ==
1458
1459
1460 Feature: Set device to sleep mode
1461
1462 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1463 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1464
1465 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1466
1467 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1468
1469
1470 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1471
1472 * There is no downlink command to set to Sleep mode.
1473
1474
1475 == 4.7 Set system time ==
1476
1477
1478 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1479
1480
1481 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1482
1483 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1484
1485
1486 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1487
1488 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1489
1490
1491
1492 == 4.8 Set Time Sync Mode ==
1493
1494
1495 (((
1496 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1497 )))
1498
1499 (((
1500 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.
1501
1502
1503 )))
1504
1505 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1506
1507 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1508
1509
1510 (% style="color:#4f81bd" %)**Downlink Command:**
1511
1512 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1513 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1514
1515
1516
1517 == 4.9 Set Time Sync Interval ==
1518
1519
1520 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1521
1522
1523 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1524
1525 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1526
1527
1528 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1529
1530 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1531
1532
1533
1534 == 4.10 Print data entries base on page. ==
1535
1536
1537 Feature: Print the sector data from start page to stop page (max is 416 pages).
1538
1539
1540 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1541
1542 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1543
1544
1545 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1546
1547 No downlink commands for feature
1548
1549
1550
1551 == 4.11 Print last few data entries. ==
1552
1553
1554 Feature: Print the last few data entries
1555
1556
1557 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1558
1559 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1560
1561
1562 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1563
1564 No downlink commands for feature
1565
1566
1567
1568 == 4.12 Clear Flash Record ==
1569
1570
1571 Feature: Clear flash storage for data log feature.
1572
1573
1574 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1575
1576 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1577
1578
1579 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1580
1581 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1582
1583
1584 == 4.13 Auto Send None-ACK messages ==
1585
1586
1587 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1588 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.
1589
1590
1591 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1592
1593 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1594 The default factory setting is 0
1595
1596 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1597 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 171px;" %)(% _msthash="1231737" _msttexthash="251862" _mstvisible="6" %)**Command Example**|=(% _mstvisible="4" style="width: 219px;" %)(% _msthash="1231738" _msttexthash="116025" _mstvisible="6" %)**Function**|=(% _mstvisible="4" style="width: 119px;" %)(% _msthash="1231739" _msttexthash="116831" _mstvisible="6" %)**Response**
1598 (% _mstvisible="3" %)|(% _msthash="1231321" _msttexthash="130455" _mstvisible="4" style="width:171px" %)AT+PNACKMD=1|(% _msthash="1231322" _msttexthash="377026" _mstvisible="4" style="width:219px" %)Poll None-ACK message|(% _msthash="1231323" _msttexthash="14989" _mstvisible="4" style="width:119px" %)OK
1599
1600 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1601
1602 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1603
1604
1605 = 5. Battery & How to replace =
1606
1607 == 5.1 Battery Type ==
1608
1609
1610 (((
1611 (((
1612 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.
1613 )))
1614 )))
1615
1616 (((
1617
1618 )))
1619
1620 (((
1621 (((
1622 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1623 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1624 )))
1625 )))
1626
1627 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1628
1629
1630
1631 == 5.2 Replace Battery ==
1632
1633
1634 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.
1635
1636 [[image:image-20220515075440-2.png||_mstalt="429546" _mstvisible="3" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" _mstvisible="3" height="193" width="257"]]
1637
1638
1639 == 5.3 Battery Life Analyze ==
1640
1641
1642 (((
1643 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:
1644 [[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]]
1645 )))
1646
1647 (((
1648
1649 )))
1650
1651 (((
1652 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]]
1653 )))
1654
1655
1656
1657 = 6. FAQ =
1658
1659
1660 == 6.1 How to use AT Command? ==
1661
1662
1663 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.
1664
1665 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1666
1667
1668 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1669
1670 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1671 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1672 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1673 * (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1674
1675 (((
1676 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.
1677 )))
1678
1679
1680 Input password and ATZ to activate LHT65N,As shown below:
1681
1682 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1683
1684
1685 (% _msthash="506066" _msttexthash="544869" %)
1686 AT Command List is as below:
1687
1688 (% _msthash="506067" _msttexthash="361920" %)
1689 AT+<CMD>? :  Help on <CMD>
1690
1691 (% _msthash="506068" _msttexthash="243061" %)
1692 AT+<CMD> :  Run <CMD>
1693
1694 (% _msthash="506069" _msttexthash="704197" %)
1695 AT+<CMD>=<value> :  Set the value
1696
1697 (% _msthash="506070" _msttexthash="455676" %)
1698 AT+<CMD>=? :  Get the value
1699
1700 (% _msthash="506071" _msttexthash="670553" %)
1701 AT+DEBUG:  Set more info output
1702
1703 (% _msthash="506072" _msttexthash="485888" %)
1704 ATZ:  Trig a reset of the MCU
1705
1706 (% _msthash="506073" _msttexthash="2068872" %)
1707 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1708
1709 (% _msthash="506074" _msttexthash="689169" %)
1710 AT+DEUI:  Get or Set the Device EUI
1711
1712 (% _msthash="506075" _msttexthash="960414" %)
1713 AT+DADDR:  Get or Set the Device Address
1714
1715 (% _msthash="506076" _msttexthash="1079897" %)
1716 AT+APPKEY:  Get or Set the Application Key
1717
1718 (% _msthash="506077" _msttexthash="1326143" %)
1719 AT+NWKSKEY:  Get or Set the Network Session Key
1720
1721 (% _msthash="506078" _msttexthash="1573000" %)
1722 AT+APPSKEY:  Get or Set the Application Session Key
1723
1724 (% _msthash="506079" _msttexthash="1041729" %)
1725 AT+APPEUI:  Get or Set the Application EUI
1726
1727 (% _msthash="506080" _msttexthash="2104206" %)
1728 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1729
1730 (% _msthash="506081" _msttexthash="3369288" %)
1731 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1732
1733 (% _msthash="506082" _msttexthash="1894529" %)
1734 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1735
1736 (% _msthash="506083" _msttexthash="3864172" %)
1737 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1738
1739 (% _msthash="506084" _msttexthash="1712204" %)
1740 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1741
1742 (% _msthash="506085" _msttexthash="1281202" %)
1743 AT+RX2FQ:  Get or Set the Rx2 window frequency
1744
1745 (% _msthash="506086" _msttexthash="2796781" %)
1746 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1747
1748 (% _msthash="506087" _msttexthash="3285165" %)
1749 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1750
1751 (% _msthash="506088" _msttexthash="3286179" %)
1752 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1753
1754 (% _msthash="506089" _msttexthash="4703803" %)
1755 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1756
1757 (% _msthash="506090" _msttexthash="4704999" %)
1758 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1759
1760 (% _msthash="506091" _msttexthash="1528683" %)
1761 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1762
1763 (% _msthash="506092" _msttexthash="757185" %)
1764 AT+NWKID:  Get or Set the Network ID
1765
1766 (% _msthash="506093" _msttexthash="1156597" %)
1767 AT+FCU:  Get or Set the Frame Counter Uplink
1768
1769 (% _msthash="506094" _msttexthash="1273987" %)
1770 AT+FCD:  Get or Set the Frame Counter Downlink
1771
1772 (% _msthash="506095" _msttexthash="859222" %)
1773 AT+CLASS:  Get or Set the Device Class
1774
1775 (% _msthash="506096" _msttexthash="384852" %)
1776 AT+JOIN:  Join network
1777
1778 (% _msthash="506097" _msttexthash="548626" %)
1779 AT+NJS:  Get the join status
1780
1781 (% _msthash="506098" _msttexthash="2546206" %)
1782 AT+SENDB:  Send hexadecimal data along with the application port
1783
1784 (% _msthash="506099" _msttexthash="1932307" %)
1785 AT+SEND:  Send text data along with the application port
1786
1787 (% _msthash="506100" _msttexthash="3560557" %)
1788 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1789
1790 (% _msthash="506101" _msttexthash="1429701" %)
1791 AT+RECV:  Print last received data in raw format
1792
1793 (% _msthash="506102" _msttexthash="1735981" %)
1794 AT+VER:  Get current image version and Frequency Band
1795
1796 (% _msthash="506103" _msttexthash="1189474" %)
1797 AT+CFM:  Get or Set the confirmation mode (0-1)
1798
1799 (% _msthash="506104" _msttexthash="1718210" %)
1800 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1801
1802 (% _msthash="506105" _msttexthash="1339403" %)
1803 AT+SNR:  Get the SNR of the last received packet
1804
1805 (% _msthash="506106" _msttexthash="1452009" %)
1806 AT+RSSI:  Get the RSSI of the last received packet
1807
1808 (% _msthash="506107" _msttexthash="2768142" %)
1809 AT+TDC:  Get or set the application data transmission interval in ms
1810
1811 (% _msthash="506108" _msttexthash="1083914" %)
1812 AT+PORT:  Get or set the application port
1813
1814 (% _msthash="506109" _msttexthash="622440" %)
1815 AT+DISAT:  Disable AT commands
1816
1817 (% _msthash="506110" _msttexthash="868361" %)
1818 AT+PWORD: Set password, max 9 digits
1819
1820 (% _msthash="506111" _msttexthash="2210299" %)
1821 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1822
1823 (% _msthash="506112" _msttexthash="2113462" %)
1824 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1825
1826 (% _msthash="506113" _msttexthash="2087423" %)
1827 AT+PDTA:  Print the sector data from start page to stop page
1828
1829 (% _msthash="506114" _msttexthash="1063127" %)
1830 AT+PLDTA:  Print the last few sets of data
1831
1832 (% _msthash="506115" _msttexthash="1999426" %)
1833 AT+CLRDTA:  Clear the storage, record position back to 1st
1834
1835 (% _msthash="506116" _msttexthash="442130" %)
1836 AT+SLEEP:  Set sleep mode
1837
1838 (% _msthash="506117" _msttexthash="1080222" %)
1839 AT+EXT:  Get or Set external sensor model
1840
1841 (% _msthash="506118" _msttexthash="1309490" %)
1842 AT+BAT:  Get the current battery voltage in mV
1843
1844 (% _msthash="506119" _msttexthash="813891" %)
1845 AT+CFG:  Print all configurations
1846
1847 (% _msthash="506120" _msttexthash="551707" %)
1848 AT+WMOD:  Get or Set Work Mode
1849
1850 (% _msthash="506121" _msttexthash="2631499" %)
1851 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1852
1853 (% _msthash="506122" _msttexthash="3907150" %)
1854 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1855
1856 (% _msthash="506123" _msttexthash="854620" %)
1857 AT+SETCNT:  Set the count at present
1858
1859 (% _msthash="506124" _msttexthash="2554877" %)
1860 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1861
1862 (% _msthash="506125" _msttexthash="771849" %)
1863 AT+RPL:  Get or set response level
1864
1865 (% _msthash="506126" _msttexthash="1484314" %)
1866 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1867
1868 (% _msthash="506127" _msttexthash="741728" %)
1869 AT+LEAPSEC:  Get or Set Leap Second
1870
1871 (% _msthash="506128" _msttexthash="1694017" %)
1872 AT+SYNCMOD:  Get or Set time synchronization method
1873
1874 (% _msthash="506129" _msttexthash="2235948" %)
1875 AT+SYNCTDC:  Get or set time synchronization interval in day
1876
1877 (% _msthash="506130" _msttexthash="425542" %)
1878 AT+PID:  Get or set the PID
1879
1880
1881
1882 == 6.2 Where to use AT commands and Downlink commands ==
1883
1884
1885 **AT commands：**
1886
1887 [[image:image-20220620153708-1.png||height="603" width="723"]]
1888
1889
1890 **Downlink commands:**
1891
1892
1893
1894 (% style="color:blue" %)**TTN:**
1895
1896 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1897
1898
1899
1900 (% style="color:blue" %)**Helium：**
1901
1902 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1903
1904
1905
1906 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1907
1908
1909 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1910
1911
1912 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1913
1914
1915
1916 (% style="color:blue" %)**Aws:**
1917
1918 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1919
1920
1921
1922 == 6.3 How to change the uplink interval？ ==
1923
1924
1925 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/||_msthash="506137" _msttexthash="5712018"]]
1926
1927
1928
1929 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1930
1931
1932 [[image:image-20220615153355-1.png]]
1933
1934 [[image:1655802313617-381.png]]
1935
1936
1937 (((
1938 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.
1939 )))
1940
1941
1942 Input password and ATZ to activate LHT65N,As shown below:
1943
1944 [[image:image-20220615154519-3.png||height="672" width="807"]]
1945
1946
1947
1948 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1949
1950
1951 [[image:image-20220615153355-1.png]]
1952
1953
1954 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1955
1956 [[image:image-20220615170542-5.png]]
1957
1958
1959 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1960
1961 (% _msthash="506146" _msttexthash="52173160" %)
1962 First connect the four lines；(% style="display:none" %)
1963
1964 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1965
1966
1967 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1968
1969 [[image:image-20220621170938-2.png]]
1970
1971
1972 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1973
1974 [[image:image-20220615171334-6.png]]
1975
1976
1977 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1978
1979
1980 When this interface appears, it indicates that the download has been completed.
1981
1982 [[image:image-20220620160723-8.png]]
1983
1984
1985 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1986
1987
1988
1989 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1990
1991
1992 [[image:image-20220623110706-1.png]]
1993
1994
1995 [[image:image-20220623112117-4.png||height="459" width="343"]]
1996
1997
1998 (((
1999 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.
2000 )))
2001
2002
2003 Input password and ATZ to activate LHT65N,As shown below:
2004
2005 [[image:image-20220615154519-3.png||height="672" width="807"]]
2006
2007
2008
2009 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
2010
2011
2012 [[image:image-20220623110706-1.png]]
2013
2014
2015 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
2016
2017 [[image:image-20220615170542-5.png]]
2018
2019
2020 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
2021
2022 (% _msthash="506146" _msttexthash="52173160" %)
2023 First connect the four lines；
2024
2025 (% _msthash="506146" _msttexthash="52173160" %)
2026 [[image:image-20220623113959-5.png||height="528" width="397"]]
2027
2028 (% _msthash="506146" _msttexthash="52173160" %)
2029 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
2030
2031
2032 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2033
2034 [[image:image-20220615171334-6.png]]
2035
2036
2037 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2038
2039
2040 When this interface appears, it indicates that the download has been completed.
2041
2042 [[image:image-20220620160723-8.png]]
2043
2044
2045 Finally,restart reset device again
2046
2047
2048
2049 = 7. Order Info =
2050
2051
2052 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
2053
2054 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
2055
2056 (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
2057
2058 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
2059
2060 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
2061
2062 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
2063
2064 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
2065
2066 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
2067
2068 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
2069
2070 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
2071
2072 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
2073
2074 * (% style="color:red" %)**E3**(%%): External Temperature Probe
2075
2076 = 8. Packing Info =
2077
2078
2079 **Package Includes**:
2080
2081 * LHT65N Temperature & Humidity Sensor x 1
2082 * Optional external sensor
2083
2084 **Dimension and weight**:
2085
2086 * Device Size:  10 x 10 x 3.5 cm
2087 * Device Weight: 120.5g
2088
2089 = 9. Reference material =
2090
2091
2092 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
2093
2094 = 10. FCC Warning =
2095
2096
2097 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
2098
2099 (1) This device may not cause harmful interference；
2100
2101 (2) this device must accept any interference received, including interference that may cause undesired operation.