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Version 203.1 by Edwin Chen on 2022/10/06 19:30
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9 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
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11 {{toc/}}
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16
17 = 1. Introduction =
18
19
20 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
21
22
23 (((
24 The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% style="color:#4f81bd" %)**Temperature Sensor.**
25 )))
26
27 (((
28 The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
29 )))
30
31 (((
32 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
33 )))
34
35 (((
36 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
37 )))
38
39 (((
40 LHT65N supports (% style="color:#4f81bd" %)**Datalog Feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
41 )))
42
43 (((
44 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
45 )))
46
47
48
49 == 1.2 Features ==
50
51
52 * Wall mountable
53 * LoRaWAN v1.0.3 Class A protocol
54 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
55 * AT Commands to change parameters
56 * Remote configure parameters via LoRaWAN Downlink
57 * Firmware upgradeable via program port
58 * Built-in 2400mAh battery for up to 10 years of use.
59 * Built-in Temperature & Humidity sensor
60 * Optional External Sensors
61 * Tri-color LED to indicate working status
62 * Datalog feature (Max 3328 records)
63
64
65 == 1.3 Specification ==
66
67
68 (% style="color:#037691" %)**Built-in Temperature Sensor:**
69
70 * Resolution: 0.01 °C
71 * Accuracy Tolerance : Typ ±0.3 °C
72 * Long Term Drift: < 0.02 °C/yr
73 * Operating Range: -40 ~~ 85 °C
74
75 (% style="color:#037691" %)**Built-in Humidity Sensor:**
76
77 * Resolution: 0.04 %RH
78 * Accuracy Tolerance : Typ ±3 %RH
79 * Long Term Drift: < 0.02 °C/yr
80 * Operating Range: 0 ~~ 96 %RH
81
82 (% style="color:#037691" %)**External Temperature Sensor:**
83
84 * Resolution: 0.0625 °C
85 * ±0.5°C accuracy from -10°C to +85°C
86 * ±2°C accuracy from -55°C to +125°C
87 * Operating Range: -55 °C ~~ 125 °C
88
89
90 = 2. Connect LHT65N to IoT Server =
91
92
93 == 2.1 How does LHT65N work? ==
94
95
96 (((
97 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.
98 )))
99
100 (((
101 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.
102 )))
103
104
105
106 == 2.2 How to Activate LHT65N? ==
107
108
109 (((
110 The LHT65N has two working modes:
111 )))
112
113 * (((
114 (% 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.
115 )))
116 * (((
117 (% 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. 
118 )))
119
120 (((
121 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
122 )))
123
124
125 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
126
127 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
128
129
130
131 == 2.3 Example to join LoRaWAN network ==
132
133
134 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
135 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.
136
137
138 (% _mstvisible="1" class="wikigeneratedid" %)
139 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
140
141
142 (((
143 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:
144 )))
145
146
147
148 === 2.3.1 Step 1: Create Device n TTN ===
149
150
151 (((
152 Create a device in TTN V3 with the OTAA keys from LHT65N.
153 )))
154
155 (((
156 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
157 )))
158
159 [[image:image-20220617150003-1.jpeg]]
160
161 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
162
163 Add APP EUI in the application.
164
165
166 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
167
168
169 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
170
171
172 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
173
174
175
176 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
177
178
179 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
180
181
182 Input APP EUI,  APP KEY and DEV EUI:
183
184
185 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
186
187
188
189
190 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
191
192
193 (((
194 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.
195 )))
196
197 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
198
199
200
201
202 == 2.4 Uplink Payload ==
203
204
205 (((
206 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.
207 )))
208
209 (((
210 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
211 )))
212
213 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
214 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
215 (((
216 (% _mstvisible="6" %)
217 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
218 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
219 (((
220 (% _mstvisible="6" %)
221 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
222 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
223 (((
224 (% _mstvisible="6" %)
225 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
226 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
227 (((
228 (% _mstvisible="6" %)
229 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
230 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
231 (((
232 (% _mstvisible="6" %)
233 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
234 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
235 (((
236 (% _mstvisible="6" %)
237 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
238 )))
239 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
240 (((
241 (% _mstvisible="6" %)
242 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
243 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
244 (((
245 (% _mstvisible="6" %)
246 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
247 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
248 (((
249 (% _mstvisible="6" %)
250 (((
251 (% _mstvisible="7" %)
252 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
253 )))
254 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
255 (((
256 (% _mstvisible="6" %)
257 (((
258 (% _mstvisible="7" %)
259 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
260 )))
261
262 (% _mstvisible="6" %)
263 (((
264 (% _mstvisible="7" %)
265 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
266 )))
267 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
268 (((
269 (% _mstvisible="6" %)
270 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
271 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
272 (((
273 (% _mstvisible="6" %)
274 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
275 )))
276
277 * The First 6 bytes: has fix meanings for every LHT65N.
278 * The 7th byte (EXT #): defines the external sensor model.
279 * 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.)
280
281
282
283 === 2.4.1 Decoder in TTN V3 ===
284
285
286 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.
287
288 Below is the position to put the decoder and LHT65N decoder can be download from here:
289
290
291 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
292
293
294 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
295
296
297
298
299 === 2.4.2 BAT-Battery Info ===
300
301
302 These two bytes of BAT include the battery state and the actually voltage
303
304 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
305
306
307 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
308
309
310 Check the battery voltage for LHT65N.
311
312 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
313 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
314
315
316
317 === 2.4.3 Built-in Temperature ===
318
319
320 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
321
322 * Temperature:  0x0ABB/100=27.47℃
323
324 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
325
326 * Temperature:  (0xF5C6-65536)/100=-26.18℃
327
328
329
330 === 2.4.4 Built-in Humidity ===
331
332
333 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
334
335 * Humidity:    0x025C/10=60.4%
336
337
338
339 === 2.4.5 Ext # ===
340
341
342 Bytes for External Sensor:
343
344 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
345
346
347
348 === 2.4.6 Ext value ===
349
350
351 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
352
353
354 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
355
356
357 * DS18B20 temp=0x0ADD/100=27.81℃
358
359 The last 2 bytes of data are meaningless
360
361 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
362
363
364 * External temperature= (0xF54F-65536)/100=-27.37℃
365
366 The last 2 bytes of data are meaningless
367
368 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
369
370
371
372 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
373
374
375 (((
376 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:
377 )))
378
379 (((
380
381 )))
382
383 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
384 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
385 (((
386 (% _mstvisible="6" %)
387 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
388 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
389 (((
390 (% _mstvisible="6" %)
391 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
392 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
393 (((
394 (% _mstvisible="6" %)
395 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
396 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
397 (((
398 (% _mstvisible="6" %)
399 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
400 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
401 (((
402 (% _mstvisible="6" %)
403 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
404 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
405 (((
406 (% _mstvisible="6" %)
407 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
408 )))
409 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
410 (((
411 (% _mstvisible="6" %)
412 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
413 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
414 (((
415 (% _mstvisible="6" %)
416 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
417 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
418 (((
419 (% _mstvisible="6" %)
420 (((
421 (% _mstvisible="7" %)
422 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
423 )))
424
425 (% _mstvisible="6" %)
426 (((
427 (% _mstvisible="7" %)
428 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
429 )))
430 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
431 (((
432 (% _mstvisible="6" %)
433 (((
434 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
435 BAT Status &
436 )))
437
438 (% _mstvisible="6" %)
439 (((
440 (% _mstvisible="7" %)
441 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
442 )))
443 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
444 (((
445 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
446 Status & Ext
447 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
448 (((
449 (% _mstvisible="6" %)
450 (((
451 (% _mstvisible="7" %)
452 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
453 )))
454 )))
455
456 (% _mstvisible="1" %)
457 * (% _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**
458
459 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
460 (% _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]
461 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
462 (((
463 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
464 BAT Status
465
466 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
467 00(b): Ultra Low ( BAT <= 2.50v)
468
469 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
470 01(b): Low  (2.50v <=BAT <= 2.55v)
471
472 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
473 10(b): OK   (2.55v <= BAT <=2.65v)
474
475 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
476 11(b): Good   (BAT >= 2.65v)
477 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
478 (((
479 (% _mstvisible="6" %)
480 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
481
482 (% _mstvisible="6" %)
483
484 )))
485
486 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
487
488 (% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
489 |(% 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]**
490 |(% 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)
491
492 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
493 * (% 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.
494 * (% 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)
495
496
497
498 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
499
500
501 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
502
503 be used to power the external ADC sensor; user can control the power on time for this
504
505 sensor by setting:
506
507 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
508
509 For example:
510
511 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
512
513
514 Or use **downlink command A2** to set the same.
515
516 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
517
518 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.
519
520 [[image:image-20220628150112-1.png||height="241" width="285"]]
521
522
523 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
524
525 [[image:image-20220628150714-4.png]]
526
527
528 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.
529
530
531 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
532
533 [[image:image-20220628151005-5.png]]
534
535
536 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
537
538 [[image:image-20220628151056-6.png]]
539
540
541 3) Within range
542
543 [[image:image-20220628151143-7.png]]
544
545
546
547 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （Since Firmware v1.3） ====
548
549
550 [[image:image-20220927095645-1.png||height="534" width="460"]]
551
552
553 **Ext=2,Temperature Sensor(TMP117)：**
554
555 [[image:image-20220906102307-7.png]]
556
557
558 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
559
560 The external cable NE2 can be use for MOD4 and MOD8
561
562
563
564
565 ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
566
567
568 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
569
570
571 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
572
573 **Case 1: Door Sensor.** 3.3v Out for such sensor is just to detect Open/Close.
574
575 In Open State, the power consumption is the same as if there is no probe
576
577 In Close state, the power consumption will be 3uA higher than normal.
578
579 [[image:image-20220906100852-1.png||height="205" width="377"]]
580
581
582 Ext=4,Interrupt Sensor：
583
584 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:512px" %)
585 |(% style="width:117px" %)(((
586 AT+EXT=4,1
587 )))|(% style="width:371px" %)(((
588 Sent uplink packet in both rising and falling interrupt
589 )))
590 |(% style="width:117px" %)(((
591 AT+EXT=4,2
592 )))|(% style="width:371px" %)(((
593 Sent uplink packet only in falling interrupt
594 )))
595 |(% style="width:117px" %)(((
596 AT+EXT=4,3
597 )))|(% style="width:371px" %)(((
598 Sent uplink packet only in rising interrupt
599 )))
600
601 Trigger by falling edge:
602
603 [[image:image-20220906101145-2.png]]
604
605
606 Trigger by raising edge：
607
608 [[image:image-20220906101145-3.png]]
609
610
611
612
613 ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
614
615
616 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
617
618
619 (% style="color:blue" %)**Case 1**(%%):  Low power consumption Flow Sensor, such flow sensor has pulse output and the power consumption in uA level and can be powered by LHT65N.
620
621 [[image:image-20220906101320-4.png||height="366" width="698"]]
622
623
624 (% style="color:blue" %)**Case 2**(%%):  Normal Flow Sensor: Such flow sensor has higher power consumption and is not suitable to be powered by LHT65N. It is powered by external power and output <3.3v pulse
625
626 [[image:image-20220906101320-5.png||height="353" width="696"]]
627
628 Ext=8, Counting Sensor ( 4 bytes)：
629
630 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
631 |(% style="width:138px" %)(((
632 AT+EXT=8,0
633 )))|(% style="width:240px" %)(((
634 Count at falling interrupt
635 )))
636 |(% style="width:138px" %)(((
637 AT+EXT=8,1
638 )))|(% style="width:240px" %)(((
639 Count at rising interrupt
640 )))
641 |(% style="width:138px" %)(((
642 AT+SETCNT=60
643 )))|(% style="width:240px" %)(((
644 Sent current count to 60
645 )))
646
647 [[image:image-20220906101320-6.png]]
648
649
650 (% style="color:blue" %)**A2 downlink Command：**
651
652 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
653
654 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
655
656 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
657
658 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
659
660 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)
661
662
663 (% style="color:blue" %)**Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm.**
664
665
666 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
667
668 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
669
670 0): Cancel
671
672 1): Threshold alarm
673
674 2): Fluctuation alarm
675
676
677 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
678
679 (% 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.**
680
681
682 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
683
684 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
685
686 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
687
688
689 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.
690
691 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
692
693 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
694
695
696 (% style="color:blue" %)** Downlink:**
697
698 0xA5 00 ~-~- AT+WMOD=0.
699
700 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 )
701
702 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
703
704 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.
705
706
707
708
709 == 2.5 Show data on Datacake ==
710
711
712 (((
713 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:
714 )))
715
716 (((
717
718 )))
719
720 (((
721 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
722 )))
723
724 (((
725 (% 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.
726 )))
727
728 (((
729
730 )))
731
732 (((
733 Add Datacake:
734 )))
735
736
737 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
738
739
740
741 Select default key as Access Key:
742
743
744 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
745
746
747 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
748
749
750 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
751
752
753 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
754
755
756
757 == 2.6 Datalog Feature ==
758
759
760 (((
761 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.
762 )))
763
764
765
766 === 2.6.1 Ways to get datalog via LoRaWAN ===
767
768
769 There are two methods:
770
771 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
772 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.
773
774 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
775
776
777 [[image:image-20220703111700-2.png||height="381" width="1119"]]
778
779
780 === 2.6.2 Unix TimeStamp ===
781
782
783 LHT65N uses Unix TimeStamp format based on
784
785
786 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
787
788
789
790 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
791
792 Below is the converter example
793
794 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
795
796 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
797
798
799
800 === 2.6.3 Set Device Time ===
801
802
803 (((
804 There are two ways to set device's time:
805 )))
806
807 (((
808 **~1. Through LoRaWAN MAC Command (Default settings)**
809 )))
810
811 (((
812 User need to set SYNCMOD=1 to enable sync time via MAC command.
813 )))
814
815 (((
816 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).
817 )))
818
819 (((
820 (% 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.**
821 )))
822
823 (((
824
825 )))
826
827 (((
828 **2. Manually Set Time**
829 )))
830
831 (((
832 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
833 )))
834
835
836
837 === 2.6.4 Poll sensor value ===
838
839
840 User can poll sensor value based on timestamps from the server. Below is the downlink command.
841
842 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
843
844
845 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.
846
847 For example, downlink command **31 5FC5F350 5FC6 0160 05**
848
849 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
850
851 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
852
853
854
855 === 2.6.5 Datalog Uplink payload ===
856
857
858 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
859 The Datalog poll reply uplink will use below payload format.
860
861 (% _mstvisible="1" %)
862 (((
863 (% _mstvisible="2" %)
864
865
866 (% _mstvisible="2" %)
867 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
868 )))
869
870 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
871 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
872 (((
873 (% _mstvisible="6" %)
874 (((
875 (% _mstvisible="7" %)
876 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
877 )))
878 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
879 (((
880 (% _mstvisible="6" %)
881 (((
882 (% _mstvisible="7" %)
883 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
884 )))
885 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
886 (((
887 (% _mstvisible="6" %)
888 (((
889 (% _mstvisible="7" %)
890 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
891 )))
892 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
893 (((
894 (% _mstvisible="6" %)
895 (((
896 (% _mstvisible="7" %)
897 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
898 )))
899 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
900 (((
901 (% _mstvisible="6" %)
902 (((
903 (% _mstvisible="7" %)
904 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
905 )))
906 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
907 (((
908 (% _mstvisible="6" %)
909 (((
910 (% _mstvisible="7" %)
911 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
912 )))
913 )))
914 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
915 (((
916 (% _mstvisible="6" %)
917 (((
918 (% _mstvisible="7" %)
919 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
920 )))
921 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
922 (((
923 (% _mstvisible="6" %)
924 (((
925 (% _mstvisible="7" %)
926 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
927 )))
928 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
929 (((
930 (% _mstvisible="6" %)
931 (((
932 (% _mstvisible="7" %)
933 (((
934 (% _mstvisible="8" %)
935 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
936 )))
937 )))
938
939 (% _mstvisible="6" %)
940 (((
941 (% _mstvisible="7" %)
942 (((
943 (% _mstvisible="8" %)
944 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
945 )))
946 )))
947 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
948 (((
949 (% _mstvisible="6" %)
950 (((
951 (% _mstvisible="7" %)
952 (((
953 (% _mstvisible="8" %)
954 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
955 )))
956 )))
957
958 (% _mstvisible="6" %)
959 (((
960 (% _mstvisible="7" %)
961 (((
962 (% _mstvisible="8" %)
963 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
964 )))
965 )))
966 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
967 (((
968 (% _mstvisible="6" %)
969 (((
970 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
971 Poll message flag & Ext
972 )))
973 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
974 (((
975 (% _mstvisible="6" %)
976 (((
977 (% _mstvisible="7" %)
978 (((
979 (% _mstvisible="8" %)
980 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
981 )))
982 )))
983
984 (% _mstvisible="6" %)
985 (((
986 (% _mstvisible="7" %)
987 (((
988 (% _mstvisible="8" %)
989
990 )))
991 )))
992 )))
993
994 (% _mstvisible="1" %)
995 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
996
997 (% _mstvisible="1" %)
998 (((
999 (% _mstvisible="2" %)
1000 (((
1001 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
1002 (((
1003 [[image:image-20221006192726-1.png||height="112" width="754"]]
1004
1005 (% class="mark" %)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)
1006
1007 (% class="mark" %)Poll Message Flag(%%): 1: This message is a poll message reply.
1008
1009
1010 )))
1011 )))
1012 )))
1013
1014 (% _mstvisible="1" %)
1015 * (% _mstvisible="3" %)
1016 (((
1017 (% _mstvisible="4" %)
1018 (((
1019 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
1020 (((
1021 Poll Message Flag is set to 1.
1022 )))
1023 )))
1024 )))
1025 * (% _mstvisible="3" %)
1026 (((
1027 (% _mstvisible="4" %)
1028 (((
1029 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
1030 (((
1031 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
1032 )))
1033 )))
1034 )))
1035
1036 (% _mstvisible="1" %)
1037 (((
1038 (% _mstvisible="2" %)
1039 (((
1040 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1041 (((
1042
1043 )))
1044
1045 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1046 (((
1047 For example, in US915 band, the max payload for different DR is:
1048 )))
1049 )))
1050 )))
1051
1052 (% _mstvisible="1" %)
1053 (((
1054 (% _mstvisible="2" %)
1055 (((
1056 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
1057 (((
1058 a) DR0: max is 11 bytes so one entry of data
1059 )))
1060 )))
1061 )))
1062
1063 (% _mstvisible="1" %)
1064 (((
1065 (% _mstvisible="2" %)
1066 (((
1067 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
1068 (((
1069 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
1070 )))
1071 )))
1072 )))
1073
1074 (% _mstvisible="1" %)
1075 (((
1076 (% _mstvisible="2" %)
1077 (((
1078 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
1079 (((
1080 c) DR2: total payload includes 11 entries of data
1081 )))
1082 )))
1083 )))
1084
1085 (% _mstvisible="1" %)
1086 (((
1087 (% _mstvisible="2" %)
1088 (((
1089 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
1090 (((
1091 d) DR3: total payload includes 22 entries of data.
1092 )))
1093 )))
1094 )))
1095
1096 (% _mstvisible="1" %)
1097 (((
1098 (% _mstvisible="2" %)
1099 (((
1100 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
1101 (((
1102 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
1103 )))
1104 )))
1105 )))
1106
1107
1108 (% _mstvisible="1" style="text-align: left;" %)
1109 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
1110
1111 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
1112 If LHT65N has below data inside Flash:
1113
1114 (% _mstvisible="1" %)
1115 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
1116
1117 (% _mstvisible="1" %)
1118 (((
1119 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
1120 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
1121 )))
1122
1123 (% _mstvisible="1" %)
1124 (((
1125 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
1126 Where : Start time: 60065F97 = time 21/1/19 04:27:03
1127 )))
1128
1129 (% _mstvisible="1" %)
1130 (((
1131 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
1132 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
1133 )))
1134
1135 (% _mstvisible="1" %)
1136 (((
1137 (% _mstvisible="2" %)
1138
1139 )))
1140
1141 (% _mstvisible="1" %)
1142 (((
1143 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
1144 LHT65N will uplink this payload.
1145 )))
1146
1147 (% _mstvisible="1" %)
1148 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
1149
1150
1151 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
1152 (((
1153 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
1154 )))
1155
1156 (% _msthash="315237" _msttexthash="1385839" %)
1157 (((
1158 Where the first 11 bytes is for the first entry:
1159 )))
1160
1161 (% _msthash="315238" _msttexthash="274846" %)
1162 (((
1163 7FFF089801464160065F97
1164 )))
1165
1166 (% _msthash="315239" _msttexthash="617435" %)
1167 (((
1168 Ext sensor data=0x7FFF/100=327.67
1169 )))
1170
1171 (% _msthash="315240" _msttexthash="270543" %)
1172 (((
1173 Temp=0x0898/100=22.00
1174 )))
1175
1176 (% _msthash="315241" _msttexthash="211783" %)
1177 (((
1178 Hum=0x0146/10=32.6
1179 )))
1180
1181 (% _msthash="315242" _msttexthash="1569776" %)
1182 (((
1183 poll message flag & Ext=0x41,means reply data,Ext=1
1184 )))
1185
1186 (% _msthash="315243" _msttexthash="1120509" %)
1187 (((
1188 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
1189 )))
1190
1191
1192
1193 == 2.7 Alarm Mode ==
1194
1195
1196 (((
1197 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.
1198 )))
1199
1200 (((
1201 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1202
1203
1204 )))
1205
1206 (((
1207 **AT COMMAND FOR ALARM MODE:**
1208 )))
1209
1210 (% _mstvisible="1" class="box infomessage" %)
1211 (((
1212 (((
1213 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
1214 )))
1215
1216 (((
1217 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1218 )))
1219
1220 (((
1221 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1222 )))
1223
1224 (((
1225 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1226 )))
1227
1228 (((
1229 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1230 )))
1231 )))
1232
1233 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1234
1235 Total bytes: 8 bytes
1236
1237 **Example:**AA0100010001003C
1238
1239 WMOD=01
1240
1241 CITEMP=0001
1242
1243 TEMPlow=0001
1244
1245 TEMPhigh=003C
1246
1247
1248
1249 == 2.8 LED Indicator ==
1250
1251
1252 The LHT65 has a triple color LED which for easy showing different stage .
1253
1254 While user press ACT button, the LED will work as per LED status with ACT button.
1255
1256 In a normal working state:
1257
1258 * For each uplink, the BLUE LED or RED LED will blink once.
1259 BLUE LED when external sensor is connected.
1260 * RED LED when external sensor is not connected
1261 * For each success downlink, the PURPLE LED will blink once
1262
1263
1264
1265 == 2.9 installation ==
1266
1267
1268 (% _mstvisible="1" %)
1269 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1270
1271
1272
1273 = 3. Sensors and Accessories =
1274
1275
1276 == 3.1 E2 Extension Cable ==
1277
1278
1279 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1280
1281
1282 **1m long breakout cable for LHT65N. Features:**
1283
1284 * (((
1285 Use for AT Command， works for both LHT52/LHT65N
1286 )))
1287 * (((
1288 Update firmware for LHT65N, works for both LHT52/LHT65N
1289 )))
1290 * (((
1291 Supports ADC mode to monitor external ADC
1292 )))
1293 * (((
1294 Supports Interrupt mode
1295 )))
1296 * (((
1297 Exposed All pins from the LHT65N Type-C connector.
1298
1299
1300
1301 )))
1302
1303 [[image:image-20220619092421-3.png||height="371" width="529"]]
1304
1305
1306
1307
1308 == 3.2 E3 Temperature Probe ==
1309
1310
1311 [[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"]]
1312
1313
1314 Temperature sensor with 2 meters cable long
1315
1316 * Resolution: 0.0625 °C
1317 * ±0.5°C accuracy from -10°C to +85°C
1318 * ±2°C accuracy from -55°C to +125°C
1319 * Operating Range: -40 ~~ 125 °C
1320 * Working voltage 2.35v ~~ 5v
1321
1322
1323
1324 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1325
1326
1327 (((
1328 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1329 )))
1330
1331 * (((
1332 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1333 )))
1334
1335 * (((
1336 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1337 )))
1338
1339 (((
1340 There are two kinds of commands to configure LHT65N, they are:
1341 )))
1342
1343 * (((
1344 (% style="color:#4f81bd" %)**General Commands**.
1345 )))
1346
1347 (((
1348 These commands are to configure:
1349 )))
1350
1351 1. (((
1352 General system settings like: uplink interval.
1353 )))
1354 1. (((
1355 LoRaWAN protocol & radio-related commands.
1356 )))
1357
1358 (((
1359 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]]
1360 )))
1361
1362 * (((
1363 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1364 )))
1365
1366 (((
1367 These commands are only valid for LHT65N, as below:
1368 )))
1369
1370
1371
1372 == 4.1 Set Transmit Interval Time ==
1373
1374
1375 Feature: Change LoRaWAN End Node Transmit Interval.
1376
1377
1378 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1379
1380 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1381
1382
1383 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1384
1385 Format: Command Code (0x01) followed by 3 bytes time value.
1386
1387 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1388
1389 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1390
1391 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1392
1393
1394
1395 == 4.2 Set External Sensor Mode ==
1396
1397
1398 Feature: Change External Sensor Mode.
1399
1400
1401 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1402
1403 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1404
1405
1406 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1407
1408 Total bytes: 2 ~~ 5 bytes
1409
1410 **Example:**
1411
1412 * 0xA201: Set external sensor type to E1
1413
1414 * 0xA209: Same as AT+EXT=9
1415
1416 * 0xA20702003c: Same as AT+SETCNT=60
1417
1418
1419
1420 == 4.3 Enable/Disable uplink Temperature probe ID ==
1421
1422
1423 (((
1424 Feature: If PID is enabled, device will send the temperature probe ID on:
1425 )))
1426
1427 * (((
1428 First Packet after OTAA Join
1429 )))
1430 * (((
1431 Every 24 hours since the first packet.
1432 )))
1433
1434 (((
1435 PID is default set to disable (0)
1436
1437
1438 )))
1439
1440 (% style="color:#4f81bd" %)**AT Command:**
1441
1442 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1443
1444
1445 (% style="color:#4f81bd" %)**Downlink Command:**
1446
1447 * **0xA800**  **~-~->** AT+PID=0
1448 * **0xA801**     **~-~->** AT+PID=1
1449
1450
1451
1452 == 4.4 Set Password ==
1453
1454
1455 Feature: Set device password, max 9 digits
1456
1457
1458 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1459
1460 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1461
1462
1463 (% style="color:#4f81bd" %)**Downlink Command:**
1464
1465 No downlink command for this feature.
1466
1467
1468
1469 == 4.5 Quit AT Command ==
1470
1471
1472 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1473
1474
1475 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1476
1477 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1478
1479
1480 (% style="color:#4f81bd" %)**Downlink Command:**
1481
1482 No downlink command for this feature.
1483
1484
1485
1486 == 4.6 Set to sleep mode ==
1487
1488
1489 Feature: Set device to sleep mode
1490
1491 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1492 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1493
1494 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1495
1496 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1497
1498
1499 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1500
1501 * There is no downlink command to set to Sleep mode.
1502
1503
1504
1505 == 4.7 Set system time ==
1506
1507
1508 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1509
1510
1511 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1512
1513 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1514
1515
1516 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1517
1518 0x306007806000  ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1519
1520
1521
1522 == 4.8 Set Time Sync Mode ==
1523
1524
1525 (((
1526 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1527 )))
1528
1529 (((
1530 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.
1531
1532
1533 )))
1534
1535 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1536
1537 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1538
1539
1540 (% style="color:#4f81bd" %)**Downlink Command:**
1541
1542 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1543 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1544
1545
1546
1547 == 4.9 Set Time Sync Interval ==
1548
1549
1550 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1551
1552
1553 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1554
1555 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1556
1557
1558 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1559
1560 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1561
1562
1563
1564 == 4.10 Print data entries base on page. ==
1565
1566
1567 Feature: Print the sector data from start page to stop page (max is 416 pages).
1568
1569
1570 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1571
1572 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1573
1574
1575 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1576
1577 No downlink commands for feature
1578
1579
1580
1581 == 4.11 Print last few data entries. ==
1582
1583
1584 Feature: Print the last few data entries
1585
1586
1587 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1588
1589 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1590
1591
1592 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1593
1594 No downlink commands for feature
1595
1596
1597
1598 == 4.12 Clear Flash Record ==
1599
1600
1601 Feature: Clear flash storage for data log feature.
1602
1603
1604 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1605
1606 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1607
1608
1609 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1610
1611 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1612
1613
1614
1615 == 4.13 Auto Send None-ACK messages ==
1616
1617
1618 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1619 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.
1620
1621
1622 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1623
1624 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1625 The default factory setting is 0
1626
1627 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1628 (% _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**
1629 (% _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
1630
1631 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1632
1633 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1634
1635
1636
1637 = 5. Battery & How to replace =
1638
1639
1640 == 5.1 Battery Type ==
1641
1642
1643 (((
1644 (((
1645 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.
1646 )))
1647 )))
1648
1649 (((
1650
1651 )))
1652
1653 (((
1654 (((
1655 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1656 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1657 )))
1658 )))
1659
1660 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1661
1662
1663
1664 == 5.2 Replace Battery ==
1665
1666
1667 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.
1668
1669 [[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"]]
1670
1671
1672 == 5.3 Battery Life Analyze ==
1673
1674
1675 (((
1676 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:
1677 [[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]]
1678 )))
1679
1680 (((
1681
1682 )))
1683
1684 (((
1685 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]]
1686 )))
1687
1688
1689
1690 = 6. FAQ =
1691
1692
1693 == 6.1 How to use AT Command? ==
1694
1695
1696 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.
1697
1698 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1699
1700
1701 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1702
1703 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1704 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1705 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1706 * (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1707
1708 (((
1709 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.
1710 )))
1711
1712
1713 Input password and ATZ to activate LHT65N,As shown below:
1714
1715 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1716
1717
1718 (% _msthash="506066" _msttexthash="544869" %)
1719 AT Command List is as below:
1720
1721 (% _msthash="506067" _msttexthash="361920" %)
1722 AT+<CMD>? :  Help on <CMD>
1723
1724 (% _msthash="506068" _msttexthash="243061" %)
1725 AT+<CMD> :  Run <CMD>
1726
1727 (% _msthash="506069" _msttexthash="704197" %)
1728 AT+<CMD>=<value> :  Set the value
1729
1730 (% _msthash="506070" _msttexthash="455676" %)
1731 AT+<CMD>=? :  Get the value
1732
1733 (% _msthash="506071" _msttexthash="670553" %)
1734 AT+DEBUG:  Set more info output
1735
1736 (% _msthash="506072" _msttexthash="485888" %)
1737 ATZ:  Trig a reset of the MCU
1738
1739 (% _msthash="506073" _msttexthash="2068872" %)
1740 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1741
1742 (% _msthash="506074" _msttexthash="689169" %)
1743 AT+DEUI:  Get or Set the Device EUI
1744
1745 (% _msthash="506075" _msttexthash="960414" %)
1746 AT+DADDR:  Get or Set the Device Address
1747
1748 (% _msthash="506076" _msttexthash="1079897" %)
1749 AT+APPKEY:  Get or Set the Application Key
1750
1751 (% _msthash="506077" _msttexthash="1326143" %)
1752 AT+NWKSKEY:  Get or Set the Network Session Key
1753
1754 (% _msthash="506078" _msttexthash="1573000" %)
1755 AT+APPSKEY:  Get or Set the Application Session Key
1756
1757 (% _msthash="506079" _msttexthash="1041729" %)
1758 AT+APPEUI:  Get or Set the Application EUI
1759
1760 (% _msthash="506080" _msttexthash="2104206" %)
1761 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1762
1763 (% _msthash="506081" _msttexthash="3369288" %)
1764 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1765
1766 (% _msthash="506082" _msttexthash="1894529" %)
1767 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1768
1769 (% _msthash="506083" _msttexthash="3864172" %)
1770 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1771
1772 (% _msthash="506084" _msttexthash="1712204" %)
1773 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1774
1775 (% _msthash="506085" _msttexthash="1281202" %)
1776 AT+RX2FQ:  Get or Set the Rx2 window frequency
1777
1778 (% _msthash="506086" _msttexthash="2796781" %)
1779 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1780
1781 (% _msthash="506087" _msttexthash="3285165" %)
1782 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1783
1784 (% _msthash="506088" _msttexthash="3286179" %)
1785 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1786
1787 (% _msthash="506089" _msttexthash="4703803" %)
1788 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1789
1790 (% _msthash="506090" _msttexthash="4704999" %)
1791 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1792
1793 (% _msthash="506091" _msttexthash="1528683" %)
1794 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1795
1796 (% _msthash="506092" _msttexthash="757185" %)
1797 AT+NWKID:  Get or Set the Network ID
1798
1799 (% _msthash="506093" _msttexthash="1156597" %)
1800 AT+FCU:  Get or Set the Frame Counter Uplink
1801
1802 (% _msthash="506094" _msttexthash="1273987" %)
1803 AT+FCD:  Get or Set the Frame Counter Downlink
1804
1805 (% _msthash="506095" _msttexthash="859222" %)
1806 AT+CLASS:  Get or Set the Device Class
1807
1808 (% _msthash="506096" _msttexthash="384852" %)
1809 AT+JOIN:  Join network
1810
1811 (% _msthash="506097" _msttexthash="548626" %)
1812 AT+NJS:  Get the join status
1813
1814 (% _msthash="506098" _msttexthash="2546206" %)
1815 AT+SENDB:  Send hexadecimal data along with the application port
1816
1817 (% _msthash="506099" _msttexthash="1932307" %)
1818 AT+SEND:  Send text data along with the application port
1819
1820 (% _msthash="506100" _msttexthash="3560557" %)
1821 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1822
1823 (% _msthash="506101" _msttexthash="1429701" %)
1824 AT+RECV:  Print last received data in raw format
1825
1826 (% _msthash="506102" _msttexthash="1735981" %)
1827 AT+VER:  Get current image version and Frequency Band
1828
1829 (% _msthash="506103" _msttexthash="1189474" %)
1830 AT+CFM:  Get or Set the confirmation mode (0-1)
1831
1832 (% _msthash="506104" _msttexthash="1718210" %)
1833 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1834
1835 (% _msthash="506105" _msttexthash="1339403" %)
1836 AT+SNR:  Get the SNR of the last received packet
1837
1838 (% _msthash="506106" _msttexthash="1452009" %)
1839 AT+RSSI:  Get the RSSI of the last received packet
1840
1841 (% _msthash="506107" _msttexthash="2768142" %)
1842 AT+TDC:  Get or set the application data transmission interval in ms
1843
1844 (% _msthash="506108" _msttexthash="1083914" %)
1845 AT+PORT:  Get or set the application port
1846
1847 (% _msthash="506109" _msttexthash="622440" %)
1848 AT+DISAT:  Disable AT commands
1849
1850 (% _msthash="506110" _msttexthash="868361" %)
1851 AT+PWORD: Set password, max 9 digits
1852
1853 (% _msthash="506111" _msttexthash="2210299" %)
1854 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1855
1856 (% _msthash="506112" _msttexthash="2113462" %)
1857 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1858
1859 (% _msthash="506113" _msttexthash="2087423" %)
1860 AT+PDTA:  Print the sector data from start page to stop page
1861
1862 (% _msthash="506114" _msttexthash="1063127" %)
1863 AT+PLDTA:  Print the last few sets of data
1864
1865 (% _msthash="506115" _msttexthash="1999426" %)
1866 AT+CLRDTA:  Clear the storage, record position back to 1st
1867
1868 (% _msthash="506116" _msttexthash="442130" %)
1869 AT+SLEEP:  Set sleep mode
1870
1871 (% _msthash="506117" _msttexthash="1080222" %)
1872 AT+EXT:  Get or Set external sensor model
1873
1874 (% _msthash="506118" _msttexthash="1309490" %)
1875 AT+BAT:  Get the current battery voltage in mV
1876
1877 (% _msthash="506119" _msttexthash="813891" %)
1878 AT+CFG:  Print all configurations
1879
1880 (% _msthash="506120" _msttexthash="551707" %)
1881 AT+WMOD:  Get or Set Work Mode
1882
1883 (% _msthash="506121" _msttexthash="2631499" %)
1884 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1885
1886 (% _msthash="506122" _msttexthash="3907150" %)
1887 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1888
1889 (% _msthash="506123" _msttexthash="854620" %)
1890 AT+SETCNT:  Set the count at present
1891
1892 (% _msthash="506124" _msttexthash="2554877" %)
1893 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1894
1895 (% _msthash="506125" _msttexthash="771849" %)
1896 AT+RPL:  Get or set response level
1897
1898 (% _msthash="506126" _msttexthash="1484314" %)
1899 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1900
1901 (% _msthash="506127" _msttexthash="741728" %)
1902 AT+LEAPSEC:  Get or Set Leap Second
1903
1904 (% _msthash="506128" _msttexthash="1694017" %)
1905 AT+SYNCMOD:  Get or Set time synchronization method
1906
1907 (% _msthash="506129" _msttexthash="2235948" %)
1908 AT+SYNCTDC:  Get or set time synchronization interval in day
1909
1910 (% _msthash="506130" _msttexthash="425542" %)
1911 AT+PID:  Get or set the PID
1912
1913
1914
1915 == 6.2 Where to use AT commands and Downlink commands ==
1916
1917
1918 **AT commands：**
1919
1920 [[image:image-20220620153708-1.png||height="603" width="723"]]
1921
1922
1923 **Downlink commands:**
1924
1925
1926
1927 (% style="color:blue" %)**TTN:**
1928
1929 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1930
1931
1932
1933 (% style="color:blue" %)**Helium：**
1934
1935 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1936
1937
1938
1939 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1940
1941
1942 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1943
1944
1945 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1946
1947
1948
1949 (% style="color:blue" %)**Aws:**
1950
1951 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1952
1953
1954
1955 == 6.3 How to change the uplink interval？ ==
1956
1957
1958 Please see this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/||_msthash="506137" _msttexthash="5712018" style="background-color: rgb(255, 255, 255);"]]
1959
1960
1961
1962 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1963
1964
1965 [[image:image-20220615153355-1.png]]
1966
1967 [[image:1655802313617-381.png]]
1968
1969
1970 (((
1971 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.
1972 )))
1973
1974
1975 Input password and ATZ to activate LHT65N,As shown below:
1976
1977 [[image:image-20220615154519-3.png||height="672" width="807"]]
1978
1979
1980
1981 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1982
1983
1984 [[image:image-20220615153355-1.png]]
1985
1986
1987 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1988
1989 [[image:image-20220615170542-5.png]]
1990
1991
1992
1993 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1994
1995 (% _msthash="506146" _msttexthash="52173160" %)
1996 First connect the four lines；(% style="display:none" %)
1997
1998 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1999
2000
2001 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
2002
2003 [[image:image-20220621170938-2.png]]
2004
2005
2006
2007 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2008
2009 [[image:image-20220615171334-6.png]]
2010
2011
2012 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2013
2014
2015 When this interface appears, it indicates that the download has been completed.
2016
2017 [[image:image-20220620160723-8.png]]
2018
2019
2020 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
2021
2022
2023
2024 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
2025
2026
2027 [[image:image-20220623110706-1.png]]
2028
2029
2030 [[image:image-20220623112117-4.png||height="459" width="343"]]
2031
2032
2033 (((
2034 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.
2035 )))
2036
2037
2038 Input password and ATZ to activate LHT65N,As shown below:
2039
2040 [[image:image-20220615154519-3.png||height="672" width="807"]]
2041
2042
2043
2044 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
2045
2046
2047 [[image:image-20220623110706-1.png]]
2048
2049
2050 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
2051
2052 [[image:image-20220615170542-5.png]]
2053
2054
2055
2056 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
2057
2058 (% _msthash="506146" _msttexthash="52173160" %)
2059 First connect the four lines；
2060
2061 (% _msthash="506146" _msttexthash="52173160" %)
2062 [[image:image-20220623113959-5.png||height="528" width="397"]]
2063
2064 (% _msthash="506146" _msttexthash="52173160" %)
2065 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
2066
2067
2068
2069 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2070
2071 [[image:image-20220615171334-6.png]]
2072
2073
2074 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2075
2076
2077 When this interface appears, it indicates that the download has been completed.
2078
2079 [[image:image-20220620160723-8.png]]
2080
2081
2082 Finally,restart reset device again
2083
2084
2085
2086 = 7. Order Info =
2087
2088
2089 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
2090
2091 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
2092
2093 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
2094 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
2095 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
2096 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
2097 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
2098 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
2099 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
2100 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
2101
2102 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
2103
2104 * (% style="color:red" %)**E3**(%%): External Temperature Probe
2105
2106
2107
2108 = 8. Packing Info =
2109
2110
2111 **Package Includes**:
2112
2113 * LHT65N Temperature & Humidity Sensor x 1
2114 * Optional external sensor
2115
2116 **Dimension and weight**:
2117
2118 * Device Size:  10 x 10 x 3.5 cm
2119 * Device Weight: 120.5g
2120
2121
2122
2123 = 9. Reference material =
2124
2125
2126 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
2127
2128
2129
2130 = 10. FCC Warning =
2131
2132
2133 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
2134
2135 (1) This device may not cause harmful interference；
2136
2137 (2) this device must accept any interference received, including interference that may cause undesired operation.
2138
2139
2140