Version 205.2 by Xiaoling on 2022/10/13 16:12
Show last authors
1 (% style="text-align:center" %)
2 [[image:image-20220613162008-1.png||_mstalt="428142" height="510" width="334"]]
3
4
5
6
7
8 (% _mstvisible="1" %)
9 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
10
11 {{toc/}}
12
13
14
15
16
17 = 1. Introduction =
18
19
20 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
21
22
23 (((
24 The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% style="color:#4f81bd" %)**Temperature Sensor.**
25 )))
26
27 (((
28 The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
29 )))
30
31 (((
32 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
33 )))
34
35 (((
36 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
37 )))
38
39 (((
40 LHT65N supports (% style="color:#4f81bd" %)**Datalog Feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
41 )))
42
43 (((
44 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
45 )))
46
47
48
49 == 1.2 Features ==
50
51
52 * Wall mountable
53 * LoRaWAN v1.0.3 Class A protocol
54 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
55 * AT Commands to change parameters
56 * Remote configure parameters via LoRaWAN Downlink
57 * Firmware upgradeable via program port
58 * Built-in 2400mAh battery for up to 10 years of use.
59 * Built-in Temperature & Humidity sensor
60 * Optional External Sensors
61 * Tri-color LED to indicate working status
62 * Datalog feature (Max 3328 records)
63
64
65
66 == 1.3 Specification ==
67
68
69 (% style="color:#037691" %)**Built-in Temperature Sensor:**
70
71 * Resolution: 0.01 °C
72 * Accuracy Tolerance : Typ ±0.3 °C
73 * Long Term Drift: < 0.02 °C/yr
74 * Operating Range: -40 ~~ 85 °C
75
76 (% style="color:#037691" %)**Built-in Humidity Sensor:**
77
78 * Resolution: 0.04 %RH
79 * Accuracy Tolerance : Typ ±3 %RH
80 * Long Term Drift: < 0.02 °C/yr
81 * Operating Range: 0 ~~ 96 %RH
82
83 (% style="color:#037691" %)**External Temperature Sensor:**
84
85 * Resolution: 0.0625 °C
86 * ±0.5°C accuracy from -10°C to +85°C
87 * ±2°C accuracy from -55°C to +125°C
88 * Operating Range: -55 °C ~~ 125 °C
89
90
91
92 = 2. Connect LHT65N to IoT Server =
93
94
95 == 2.1 How does LHT65N work? ==
96
97
98 (((
99 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.
100 )))
101
102 (((
103 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.
104 )))
105
106
107
108 == 2.2 How to Activate LHT65N? ==
109
110
111 (((
112 The LHT65N has two working modes:
113 )))
114
115 * (((
116 (% 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.
117 )))
118 * (((
119 (% 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. 
120 )))
121
122 (((
123 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
124 )))
125
126
127 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
128
129 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
130
131
132
133 == 2.3 Example to join LoRaWAN network ==
134
135
136 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
137 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.
138
139
140 (% _mstvisible="1" class="wikigeneratedid" %)
141 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
142
143
144 (((
145 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:
146 )))
147
148
149
150 === 2.3.1 Step 1: Create Device n TTN ===
151
152
153 (((
154 Create a device in TTN V3 with the OTAA keys from LHT65N.
155 )))
156
157 (((
158 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
159 )))
160
161 [[image:image-20220617150003-1.jpeg]]
162
163 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
164
165 Add APP EUI in the application.
166
167
168 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
169
170
171 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
172
173
174 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
175
176
177
178 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
179
180
181 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
182
183
184 Input APP EUI,  APP KEY and DEV EUI:
185
186
187 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
188
189
190
191
192 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
193
194
195 (((
196 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.
197 )))
198
199 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
200
201
202
203
204 == 2.4 Uplink Payload ==
205
206
207 (((
208 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.
209 )))
210
211 (((
212 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
213 )))
214
215 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
216 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
217 (((
218 (% _mstvisible="6" %)
219 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
220 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
221 (((
222 (% _mstvisible="6" %)
223 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
224 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
225 (((
226 (% _mstvisible="6" %)
227 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
228 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
229 (((
230 (% _mstvisible="6" %)
231 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
232 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
233 (((
234 (% _mstvisible="6" %)
235 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
236 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
237 (((
238 (% _mstvisible="6" %)
239 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
240 )))
241 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
242 (((
243 (% _mstvisible="6" %)
244 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
245 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
246 (((
247 (% _mstvisible="6" %)
248 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
249 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
250 (((
251 (% _mstvisible="6" %)
252 (((
253 (% _mstvisible="7" %)
254 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
255 )))
256 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
257 (((
258 (% _mstvisible="6" %)
259 (((
260 (% _mstvisible="7" %)
261 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
262 )))
263
264 (% _mstvisible="6" %)
265 (((
266 (% _mstvisible="7" %)
267 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
268 )))
269 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
270 (((
271 (% _mstvisible="6" %)
272 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
273 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
274 (((
275 (% _mstvisible="6" %)
276 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
277 )))
278
279 * The First 6 bytes: has fix meanings for every LHT65N.
280 * The 7th byte (EXT #): defines the external sensor model.
281 * 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.)
282
283
284
285 === 2.4.1 Decoder in TTN V3 ===
286
287
288 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.
289
290 Below is the position to put the decoder and LHT65N decoder can be download from here: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
291
292
293 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
294
295
296
297
298 === 2.4.2 BAT-Battery Info ===
299
300
301 These two bytes of BAT include the battery state and the actually voltage
302
303 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
304
305
306 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
307
308
309 Check the battery voltage for LHT65N.
310
311 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
312 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
313
314
315
316 === 2.4.3 Built-in Temperature ===
317
318
319 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
320
321 * Temperature:  0x0ABB/100=27.47℃
322
323 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
324
325 * Temperature:  (0xF5C6-65536)/100=-26.18℃
326
327 === 2.4.4 Built-in Humidity ===
328
329
330 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
331
332 * Humidity:    0x025C/10=60.4%
333
334
335
336 === 2.4.5 Ext # ===
337
338
339 Bytes for External Sensor:
340
341 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
342
343
344
345 === 2.4.6 Ext value ===
346
347
348 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
349
350
351 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
352
353
354 * DS18B20 temp=0x0ADD/100=27.81℃
355
356 The last 2 bytes of data are meaningless
357
358 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
359
360
361 * External temperature= (0xF54F-65536)/100=-27.37℃
362
363 The last 2 bytes of data are meaningless
364
365 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
366
367
368
369 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
370
371
372 (((
373 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:
374 )))
375
376 (((
377
378 )))
379
380 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
381 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
382 (((
383 (% _mstvisible="6" %)
384 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
385 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
386 (((
387 (% _mstvisible="6" %)
388 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
389 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
390 (((
391 (% _mstvisible="6" %)
392 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
393 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
394 (((
395 (% _mstvisible="6" %)
396 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
397 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
398 (((
399 (% _mstvisible="6" %)
400 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
401 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
402 (((
403 (% _mstvisible="6" %)
404 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
405 )))
406 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
407 (((
408 (% _mstvisible="6" %)
409 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
410 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
411 (((
412 (% _mstvisible="6" %)
413 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
414 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
415 (((
416 (% _mstvisible="6" %)
417 (((
418 (% _mstvisible="7" %)
419 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
420 )))
421
422 (% _mstvisible="6" %)
423 (((
424 (% _mstvisible="7" %)
425 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
426 )))
427 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
428 (((
429 (% _mstvisible="6" %)
430 (((
431 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
432 BAT Status &
433 )))
434
435 (% _mstvisible="6" %)
436 (((
437 (% _mstvisible="7" %)
438 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
439 )))
440 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
441 (((
442 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
443 Status & Ext
444 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
445 (((
446 (% _mstvisible="6" %)
447 (((
448 (% _mstvisible="7" %)
449 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
450 )))
451 )))
452
453
454 (% _mstvisible="1" %)
455 * (% _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**
456
457 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
458 (% _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]
459 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
460 (((
461 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
462 BAT Status
463
464 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
465 00(b): Ultra Low ( BAT <= 2.50v)
466
467 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
468 01(b): Low  (2.50v <=BAT <= 2.55v)
469
470 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
471 10(b): OK   (2.55v <= BAT <=2.65v)
472
473 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
474 11(b): Good   (BAT >= 2.65v)
475 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
476 (((
477 (% _mstvisible="6" %)
478 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
479
480 (% _mstvisible="6" %)
481
482 )))
483
484
485 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
486
487 (% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
488 |(% 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]**
489 |(% 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)
490
491 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
492 * (% 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.
493 * (% 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)
494
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 **Method 1**: IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
772
773
774 **Method 2: **Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
775
776 **Note for method 2:**
777
778 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
779 * b) LHT65N will send data in **CONFIRMED Mode** when PNACKMD=1, but LHT65N won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if LHT65N gets a ACK, LHT65N will consider there is a network connection and resend all NONE-ACK Message.
780
781 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
782
783
784 [[image:image-20220703111700-2.png||height="381" width="1119"]]
785
786
787 === 2.6.2 Unix TimeStamp ===
788
789
790 LHT65N uses Unix TimeStamp format based on
791
792
793 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
794
795
796
797 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
798
799 Below is the converter example
800
801 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
802
803 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
804
805
806
807 === 2.6.3 Set Device Time ===
808
809
810 (((
811 There are two ways to set device's time:
812 )))
813
814 (((
815 **~1. Through LoRaWAN MAC Command (Default settings)**
816 )))
817
818 (((
819 User need to set SYNCMOD=1 to enable sync time via MAC command.
820 )))
821
822 (((
823 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).
824 )))
825
826 (((
827 (% 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.**
828 )))
829
830 (((
831
832 )))
833
834 (((
835 **2. Manually Set Time**
836 )))
837
838 (((
839 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
840 )))
841
842
843
844 === 2.6.4 Poll sensor value ===
845
846
847 User can poll sensor value based on timestamps from the server. Below is the downlink command.
848
849 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
850
851
852 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.
853
854 For example, downlink command **31 5FC5F350 5FC6 0160 05**
855
856 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
857
858 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
859
860
861
862 === 2.6.5 Datalog Uplink payload ===
863
864
865 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
866 The Datalog poll reply uplink will use below payload format.
867
868 (% _mstvisible="1" %)
869 (((
870 (% _mstvisible="2" %)
871
872
873 (% _mstvisible="2" %)
874 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
875 )))
876
877 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
878 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
879 (((
880 (% _mstvisible="6" %)
881 (((
882 (% _mstvisible="7" %)
883 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
884 )))
885 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
886 (((
887 (% _mstvisible="6" %)
888 (((
889 (% _mstvisible="7" %)
890 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
891 )))
892 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
893 (((
894 (% _mstvisible="6" %)
895 (((
896 (% _mstvisible="7" %)
897 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
898 )))
899 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
900 (((
901 (% _mstvisible="6" %)
902 (((
903 (% _mstvisible="7" %)
904 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
905 )))
906 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
907 (((
908 (% _mstvisible="6" %)
909 (((
910 (% _mstvisible="7" %)
911 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
912 )))
913 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
914 (((
915 (% _mstvisible="6" %)
916 (((
917 (% _mstvisible="7" %)
918 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
919 )))
920 )))
921 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
922 (((
923 (% _mstvisible="6" %)
924 (((
925 (% _mstvisible="7" %)
926 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
927 )))
928 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
929 (((
930 (% _mstvisible="6" %)
931 (((
932 (% _mstvisible="7" %)
933 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
934 )))
935 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
936 (((
937 (% _mstvisible="6" %)
938 (((
939 (% _mstvisible="7" %)
940 (((
941 (% _mstvisible="8" %)
942 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
943 )))
944 )))
945
946 (% _mstvisible="6" %)
947 (((
948 (% _mstvisible="7" %)
949 (((
950 (% _mstvisible="8" %)
951 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
952 )))
953 )))
954 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
955 (((
956 (% _mstvisible="6" %)
957 (((
958 (% _mstvisible="7" %)
959 (((
960 (% _mstvisible="8" %)
961 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
962 )))
963 )))
964
965 (% _mstvisible="6" %)
966 (((
967 (% _mstvisible="7" %)
968 (((
969 (% _mstvisible="8" %)
970 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
971 )))
972 )))
973 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
974 (((
975 (% _mstvisible="6" %)
976 (((
977 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
978 Poll message flag & Ext
979 )))
980 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
981 (((
982 (% _mstvisible="6" %)
983 (((
984 (% _mstvisible="7" %)
985 (((
986 (% _mstvisible="8" %)
987 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
988 )))
989 )))
990
991 (% _mstvisible="6" %)
992 (((
993 (% _mstvisible="7" %)
994 (((
995 (% _mstvisible="8" %)
996
997 )))
998 )))
999 )))
1000
1001 (% _mstvisible="1" %)
1002 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
1003
1004 (% _mstvisible="1" %)
1005 (((
1006 (% _mstvisible="2" %)
1007 (((
1008 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
1009 (((
1010 [[image:image-20221006192726-1.png||height="112" width="754"]]
1011
1012 (% 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)
1013
1014 (% class="mark" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
1015
1016
1017 )))
1018 )))
1019 )))
1020
1021 (% _mstvisible="1" %)
1022 * (% _mstvisible="3" %)
1023 (((
1024 (% _mstvisible="4" %)
1025 (((
1026 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
1027 (((
1028 Poll Message Flag is set to 1.
1029 )))
1030 )))
1031 )))
1032 * (% _mstvisible="3" %)
1033 (((
1034 (% _mstvisible="4" %)
1035 (((
1036 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
1037 (((
1038 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
1039 )))
1040 )))
1041 )))
1042
1043 (% _mstvisible="1" %)
1044 (((
1045 (% _mstvisible="2" %)
1046 (((
1047 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1048 (((
1049
1050 )))
1051
1052 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1053 (((
1054 For example, in US915 band, the max payload for different DR is:
1055 )))
1056 )))
1057 )))
1058
1059 (% _mstvisible="1" %)
1060 (((
1061 (% _mstvisible="2" %)
1062 (((
1063 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
1064 (((
1065 **a) DR0:** max is 11 bytes so one entry of data
1066 )))
1067 )))
1068 )))
1069
1070 (% _mstvisible="1" %)
1071 (((
1072 (% _mstvisible="2" %)
1073 (((
1074 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
1075 (((
1076 **b) DR1:** max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
1077 )))
1078 )))
1079 )))
1080
1081 (% _mstvisible="1" %)
1082 (((
1083 (% _mstvisible="2" %)
1084 (((
1085 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
1086 (((
1087 **c) DR2:** total payload includes 11 entries of data
1088 )))
1089 )))
1090 )))
1091
1092 (% _mstvisible="1" %)
1093 (((
1094 (% _mstvisible="2" %)
1095 (((
1096 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
1097 (((
1098 **d) DR3: **total payload includes 22 entries of data.
1099 )))
1100 )))
1101 )))
1102
1103 (% _mstvisible="1" %)
1104 (((
1105 (% _mstvisible="2" %)
1106 (((
1107 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
1108 (((
1109 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
1110 )))
1111 )))
1112 )))
1113
1114
1115 (% _mstvisible="1" style="text-align: left;" %)
1116 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
1117
1118 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
1119 If LHT65N has below data inside Flash:
1120
1121 (% _mstvisible="1" %)
1122 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
1123
1124 (% _mstvisible="1" %)
1125 (((
1126 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
1127 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
1128 )))
1129
1130 (% _mstvisible="1" %)
1131 (((
1132 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
1133 Where : Start time: 60065F97 = time 21/1/19 04:27:03
1134 )))
1135
1136 (% _mstvisible="1" %)
1137 (((
1138 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
1139 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
1140 )))
1141
1142 (% _mstvisible="1" %)
1143 (((
1144 (% _mstvisible="2" %)
1145
1146 )))
1147
1148 (% _mstvisible="1" %)
1149 (((
1150 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
1151 LHT65N will uplink this payload.
1152 )))
1153
1154 (% _mstvisible="1" %)
1155 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
1156
1157
1158 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
1159 (((
1160 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
1161 )))
1162
1163 (% _msthash="315237" _msttexthash="1385839" %)
1164 (((
1165 Where the first 11 bytes is for the first entry:
1166 )))
1167
1168 (% _msthash="315238" _msttexthash="274846" %)
1169 (((
1170 7FFF089801464160065F97
1171 )))
1172
1173 (% _msthash="315239" _msttexthash="617435" %)
1174 (((
1175 Ext sensor data=0x7FFF/100=327.67
1176 )))
1177
1178 (% _msthash="315240" _msttexthash="270543" %)
1179 (((
1180 Temp=0x0898/100=22.00
1181 )))
1182
1183 (% _msthash="315241" _msttexthash="211783" %)
1184 (((
1185 Hum=0x0146/10=32.6
1186 )))
1187
1188 (% _msthash="315242" _msttexthash="1569776" %)
1189 (((
1190 poll message flag & Ext=0x41,means reply data,Ext=1
1191 )))
1192
1193 (% _msthash="315243" _msttexthash="1120509" %)
1194 (((
1195 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
1196 )))
1197
1198
1199
1200 == 2.7 Alarm Mode ==
1201
1202
1203 (((
1204 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.
1205 )))
1206
1207 (((
1208 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1209
1210
1211 )))
1212
1213 (((
1214 **AT COMMAND FOR ALARM MODE:**
1215 )))
1216
1217 (% _mstvisible="1" class="box infomessage" %)
1218 (((
1219 (((
1220 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
1221 )))
1222
1223 (((
1224 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1225 )))
1226
1227 (((
1228 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1229 )))
1230
1231 (((
1232 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1233 )))
1234
1235 (((
1236 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1237 )))
1238 )))
1239
1240 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1241
1242 Total bytes: 8 bytes
1243
1244 **Example:**AA0100010001003C
1245
1246 WMOD=01
1247
1248 CITEMP=0001
1249
1250 TEMPlow=0001
1251
1252 TEMPhigh=003C
1253
1254
1255
1256 == 2.8 LED Indicator ==
1257
1258
1259 The LHT65 has a triple color LED which for easy showing different stage .
1260
1261 While user press ACT button, the LED will work as per LED status with ACT button.
1262
1263 In a normal working state:
1264
1265 * For each uplink, the BLUE LED or RED LED will blink once.
1266 BLUE LED when external sensor is connected.
1267 * RED LED when external sensor is not connected
1268 * For each success downlink, the PURPLE LED will blink once
1269
1270
1271
1272 == 2.9 installation ==
1273
1274
1275 (% _mstvisible="1" %)
1276 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1277
1278
1279
1280 = 3. Sensors and Accessories =
1281
1282
1283 == 3.1 E2 Extension Cable ==
1284
1285
1286 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1287
1288
1289 **1m long breakout cable for LHT65N. Features:**
1290
1291 * (((
1292 Use for AT Command， works for both LHT52/LHT65N
1293 )))
1294 * (((
1295 Update firmware for LHT65N, works for both LHT52/LHT65N
1296 )))
1297 * (((
1298 Supports ADC mode to monitor external ADC
1299 )))
1300 * (((
1301 Supports Interrupt mode
1302 )))
1303 * (((
1304 Exposed All pins from the LHT65N Type-C connector.
1305
1306
1307
1308 )))
1309
1310 [[image:image-20220619092421-3.png||height="371" width="529"]]
1311
1312
1313
1314
1315 == 3.2 E3 Temperature Probe ==
1316
1317
1318 [[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"]]
1319
1320
1321 Temperature sensor with 2 meters cable long
1322
1323 * Resolution: 0.0625 °C
1324 * ±0.5°C accuracy from -10°C to +85°C
1325 * ±2°C accuracy from -55°C to +125°C
1326 * Operating Range: -40 ~~ 125 °C
1327 * Working voltage 2.35v ~~ 5v
1328
1329
1330
1331 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1332
1333
1334 (((
1335 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1336 )))
1337
1338 * (((
1339 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1340 )))
1341
1342 * (((
1343 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1344 )))
1345
1346 (((
1347 There are two kinds of commands to configure LHT65N, they are:
1348 )))
1349
1350 * (((
1351 (% style="color:#4f81bd" %)**General Commands**.
1352 )))
1353
1354 (((
1355 These commands are to configure:
1356 )))
1357
1358 1. (((
1359 General system settings like: uplink interval.
1360 )))
1361 1. (((
1362 LoRaWAN protocol & radio-related commands.
1363 )))
1364
1365 (((
1366 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]]
1367 )))
1368
1369 * (((
1370 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1371 )))
1372
1373 (((
1374 These commands are only valid for LHT65N, as below:
1375 )))
1376
1377
1378
1379 == 4.1 Set Transmit Interval Time ==
1380
1381
1382 Feature: Change LoRaWAN End Node Transmit Interval.
1383
1384
1385 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1386
1387 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1388
1389
1390 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1391
1392 Format: Command Code (0x01) followed by 3 bytes time value.
1393
1394 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1395
1396 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1397
1398 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1399
1400
1401
1402 == 4.2 Set External Sensor Mode ==
1403
1404
1405 Feature: Change External Sensor Mode.
1406
1407
1408 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1409
1410 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1411
1412
1413 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1414
1415 Total bytes: 2 ~~ 5 bytes
1416
1417 **Example:**
1418
1419 * 0xA201: Set external sensor type to E1
1420
1421 * 0xA209: Same as AT+EXT=9
1422
1423 * 0xA20702003c: Same as AT+SETCNT=60
1424
1425
1426
1427 == 4.3 Enable/Disable uplink Temperature probe ID ==
1428
1429
1430 (((
1431 Feature: If PID is enabled, device will send the temperature probe ID on:
1432 )))
1433
1434 * (((
1435 First Packet after OTAA Join
1436 )))
1437 * (((
1438 Every 24 hours since the first packet.
1439 )))
1440
1441 (((
1442 PID is default set to disable (0)
1443
1444
1445 )))
1446
1447 (% style="color:#4f81bd" %)**AT Command:**
1448
1449 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1450
1451
1452 (% style="color:#4f81bd" %)**Downlink Command:**
1453
1454 * **0xA800**  **~-~->** AT+PID=0
1455 * **0xA801**     **~-~->** AT+PID=1
1456
1457
1458
1459 == 4.4 Set Password ==
1460
1461
1462 Feature: Set device password, max 9 digits
1463
1464
1465 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1466
1467 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1468
1469
1470 (% style="color:#4f81bd" %)**Downlink Command:**
1471
1472 No downlink command for this feature.
1473
1474
1475
1476 == 4.5 Quit AT Command ==
1477
1478
1479 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1480
1481
1482 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1483
1484 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1485
1486
1487 (% style="color:#4f81bd" %)**Downlink Command:**
1488
1489 No downlink command for this feature.
1490
1491
1492
1493 == 4.6 Set to sleep mode ==
1494
1495
1496 Feature: Set device to sleep mode
1497
1498 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1499 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1500
1501 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1502
1503 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1504
1505
1506 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1507
1508 * There is no downlink command to set to Sleep mode.
1509
1510
1511
1512 == 4.7 Set system time ==
1513
1514
1515 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1516
1517
1518 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1519
1520 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1521
1522
1523 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1524
1525 0x306007806000  ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1526
1527
1528
1529 == 4.8 Set Time Sync Mode ==
1530
1531
1532 (((
1533 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1534 )))
1535
1536 (((
1537 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.
1538
1539
1540 )))
1541
1542 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1543
1544 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1545
1546
1547 (% style="color:#4f81bd" %)**Downlink Command:**
1548
1549 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1550 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1551
1552
1553
1554 == 4.9 Set Time Sync Interval ==
1555
1556
1557 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1558
1559
1560 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1561
1562 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1563
1564
1565 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1566
1567 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1568
1569
1570
1571 == 4.10 Print data entries base on page. ==
1572
1573
1574 Feature: Print the sector data from start page to stop page (max is 416 pages).
1575
1576
1577 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1578
1579 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1580
1581
1582 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1583
1584 No downlink commands for feature
1585
1586
1587
1588 == 4.11 Print last few data entries. ==
1589
1590
1591 Feature: Print the last few data entries
1592
1593
1594 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1595
1596 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1597
1598
1599 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1600
1601 No downlink commands for feature
1602
1603
1604
1605 == 4.12 Clear Flash Record ==
1606
1607
1608 Feature: Clear flash storage for data log feature.
1609
1610
1611 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1612
1613 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1614
1615
1616 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1617
1618 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1619
1620
1621
1622 == 4.13 Auto Send None-ACK messages ==
1623
1624
1625 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1626 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.
1627
1628
1629 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1630
1631 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1632 The default factory setting is 0
1633
1634 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1635 (% _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**
1636 (% _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
1637
1638 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1639
1640 * Example: 0x3401 ~/~/  Same as AT+PNACKMD=1
1641
1642
1643
1644 = 5. Battery & How to replace =
1645
1646
1647 == 5.1 Battery Type ==
1648
1649
1650 (((
1651 (((
1652 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.
1653 )))
1654 )))
1655
1656 (((
1657
1658 )))
1659
1660 (((
1661 (((
1662 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1663 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1664 )))
1665 )))
1666
1667 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1668
1669
1670
1671 == 5.2 Replace Battery ==
1672
1673
1674 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.
1675
1676 [[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"]]
1677
1678
1679 == 5.3 Battery Life Analyze ==
1680
1681
1682 (((
1683 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:
1684 [[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]]
1685 )))
1686
1687 (((
1688
1689 )))
1690
1691 (((
1692 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]]
1693 )))
1694
1695
1696
1697 = 6. FAQ =
1698
1699
1700 == 6.1 How to use AT Command? ==
1701
1702
1703 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.
1704
1705 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1706
1707
1708 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1709
1710 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1711 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1712 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1713
1714 (((
1715 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.
1716 )))
1717
1718
1719 Input password and ATZ to activate LHT65N,As shown below:
1720
1721 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1722
1723
1724 (% _msthash="506066" _msttexthash="544869" %)
1725 AT Command List is as below:
1726
1727 (% _msthash="506067" _msttexthash="361920" %)
1728 AT+<CMD>? :  Help on <CMD>
1729
1730 (% _msthash="506068" _msttexthash="243061" %)
1731 AT+<CMD> :  Run <CMD>
1732
1733 (% _msthash="506069" _msttexthash="704197" %)
1734 AT+<CMD>=<value> :  Set the value
1735
1736 (% _msthash="506070" _msttexthash="455676" %)
1737 AT+<CMD>=? :  Get the value
1738
1739 (% _msthash="506071" _msttexthash="670553" %)
1740 AT+DEBUG:  Set more info output
1741
1742 (% _msthash="506072" _msttexthash="485888" %)
1743 ATZ:  Trig a reset of the MCU
1744
1745 (% _msthash="506073" _msttexthash="2068872" %)
1746 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1747
1748 (% _msthash="506074" _msttexthash="689169" %)
1749 AT+DEUI:  Get or Set the Device EUI
1750
1751 (% _msthash="506075" _msttexthash="960414" %)
1752 AT+DADDR:  Get or Set the Device Address
1753
1754 (% _msthash="506076" _msttexthash="1079897" %)
1755 AT+APPKEY:  Get or Set the Application Key
1756
1757 (% _msthash="506077" _msttexthash="1326143" %)
1758 AT+NWKSKEY:  Get or Set the Network Session Key
1759
1760 (% _msthash="506078" _msttexthash="1573000" %)
1761 AT+APPSKEY:  Get or Set the Application Session Key
1762
1763 (% _msthash="506079" _msttexthash="1041729" %)
1764 AT+APPEUI:  Get or Set the Application EUI
1765
1766 (% _msthash="506080" _msttexthash="2104206" %)
1767 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1768
1769 (% _msthash="506081" _msttexthash="3369288" %)
1770 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1771
1772 (% _msthash="506082" _msttexthash="1894529" %)
1773 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1774
1775 (% _msthash="506083" _msttexthash="3864172" %)
1776 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1777
1778 (% _msthash="506084" _msttexthash="1712204" %)
1779 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1780
1781 (% _msthash="506085" _msttexthash="1281202" %)
1782 AT+RX2FQ:  Get or Set the Rx2 window frequency
1783
1784 (% _msthash="506086" _msttexthash="2796781" %)
1785 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1786
1787 (% _msthash="506087" _msttexthash="3285165" %)
1788 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1789
1790 (% _msthash="506088" _msttexthash="3286179" %)
1791 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1792
1793 (% _msthash="506089" _msttexthash="4703803" %)
1794 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1795
1796 (% _msthash="506090" _msttexthash="4704999" %)
1797 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1798
1799 (% _msthash="506091" _msttexthash="1528683" %)
1800 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1801
1802 (% _msthash="506092" _msttexthash="757185" %)
1803 AT+NWKID:  Get or Set the Network ID
1804
1805 (% _msthash="506093" _msttexthash="1156597" %)
1806 AT+FCU:  Get or Set the Frame Counter Uplink
1807
1808 (% _msthash="506094" _msttexthash="1273987" %)
1809 AT+FCD:  Get or Set the Frame Counter Downlink
1810
1811 (% _msthash="506095" _msttexthash="859222" %)
1812 AT+CLASS:  Get or Set the Device Class
1813
1814 (% _msthash="506096" _msttexthash="384852" %)
1815 AT+JOIN:  Join network
1816
1817 (% _msthash="506097" _msttexthash="548626" %)
1818 AT+NJS:  Get the join status
1819
1820 (% _msthash="506098" _msttexthash="2546206" %)
1821 AT+SENDB:  Send hexadecimal data along with the application port
1822
1823 (% _msthash="506099" _msttexthash="1932307" %)
1824 AT+SEND:  Send text data along with the application port
1825
1826 (% _msthash="506100" _msttexthash="3560557" %)
1827 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1828
1829 (% _msthash="506101" _msttexthash="1429701" %)
1830 AT+RECV:  Print last received data in raw format
1831
1832 (% _msthash="506102" _msttexthash="1735981" %)
1833 AT+VER:  Get current image version and Frequency Band
1834
1835 (% _msthash="506103" _msttexthash="1189474" %)
1836 AT+CFM:  Get or Set the confirmation mode (0-1)
1837
1838 (% _msthash="506104" _msttexthash="1718210" %)
1839 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1840
1841 (% _msthash="506105" _msttexthash="1339403" %)
1842 AT+SNR:  Get the SNR of the last received packet
1843
1844 (% _msthash="506106" _msttexthash="1452009" %)
1845 AT+RSSI:  Get the RSSI of the last received packet
1846
1847 (% _msthash="506107" _msttexthash="2768142" %)
1848 AT+TDC:  Get or set the application data transmission interval in ms
1849
1850 (% _msthash="506108" _msttexthash="1083914" %)
1851 AT+PORT:  Get or set the application port
1852
1853 (% _msthash="506109" _msttexthash="622440" %)
1854 AT+DISAT:  Disable AT commands
1855
1856 (% _msthash="506110" _msttexthash="868361" %)
1857 AT+PWORD: Set password, max 9 digits
1858
1859 (% _msthash="506111" _msttexthash="2210299" %)
1860 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1861
1862 (% _msthash="506112" _msttexthash="2113462" %)
1863 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1864
1865 (% _msthash="506113" _msttexthash="2087423" %)
1866 AT+PDTA:  Print the sector data from start page to stop page
1867
1868 (% _msthash="506114" _msttexthash="1063127" %)
1869 AT+PLDTA:  Print the last few sets of data
1870
1871 (% _msthash="506115" _msttexthash="1999426" %)
1872 AT+CLRDTA:  Clear the storage, record position back to 1st
1873
1874 (% _msthash="506116" _msttexthash="442130" %)
1875 AT+SLEEP:  Set sleep mode
1876
1877 (% _msthash="506117" _msttexthash="1080222" %)
1878 AT+EXT:  Get or Set external sensor model
1879
1880 (% _msthash="506118" _msttexthash="1309490" %)
1881 AT+BAT:  Get the current battery voltage in mV
1882
1883 (% _msthash="506119" _msttexthash="813891" %)
1884 AT+CFG:  Print all configurations
1885
1886 (% _msthash="506120" _msttexthash="551707" %)
1887 AT+WMOD:  Get or Set Work Mode
1888
1889 (% _msthash="506121" _msttexthash="2631499" %)
1890 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1891
1892 (% _msthash="506122" _msttexthash="3907150" %)
1893 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1894
1895 (% _msthash="506123" _msttexthash="854620" %)
1896 AT+SETCNT:  Set the count at present
1897
1898 (% _msthash="506124" _msttexthash="2554877" %)
1899 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1900
1901 (% _msthash="506125" _msttexthash="771849" %)
1902 AT+RPL:  Get or set response level
1903
1904 (% _msthash="506126" _msttexthash="1484314" %)
1905 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1906
1907 (% _msthash="506127" _msttexthash="741728" %)
1908 AT+LEAPSEC:  Get or Set Leap Second
1909
1910 (% _msthash="506128" _msttexthash="1694017" %)
1911 AT+SYNCMOD:  Get or Set time synchronization method
1912
1913 (% _msthash="506129" _msttexthash="2235948" %)
1914 AT+SYNCTDC:  Get or set time synchronization interval in day
1915
1916 (% _msthash="506130" _msttexthash="425542" %)
1917 AT+PID:  Get or set the PID
1918
1919
1920
1921 == 6.2 Where to use AT commands and Downlink commands ==
1922
1923
1924 **AT commands：**
1925
1926 [[image:image-20220620153708-1.png||height="603" width="723"]]
1927
1928
1929 **Downlink commands:**
1930
1931
1932
1933 (% style="color:blue" %)**TTN:**
1934
1935 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1936
1937
1938
1939 (% style="color:blue" %)**Helium：**
1940
1941 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1942
1943
1944
1945 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1946
1947
1948 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1949
1950
1951 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1952
1953
1954
1955 (% style="color:blue" %)**Aws:**
1956
1957 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1958
1959
1960
1961 == 6.3 How to change the uplink interval？ ==
1962
1963
1964 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);"]]
1965
1966
1967
1968 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1969
1970
1971 [[image:image-20220615153355-1.png]]
1972
1973 [[image:1655802313617-381.png]]
1974
1975
1976 (((
1977 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.
1978 )))
1979
1980
1981 Input password and ATZ to activate LHT65N,As shown below:
1982
1983 [[image:image-20220615154519-3.png||height="672" width="807"]]
1984
1985
1986
1987 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1988
1989
1990 [[image:image-20220615153355-1.png]]
1991
1992
1993 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1994
1995 [[image:image-20220615170542-5.png]]
1996
1997
1998
1999 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
2000
2001 (% _msthash="506146" _msttexthash="52173160" %)
2002 First connect the four lines；(% style="display:none" %)
2003
2004 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
2005
2006
2007 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
2008
2009 [[image:image-20220621170938-2.png]]
2010
2011
2012
2013 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2014
2015 [[image:image-20220615171334-6.png]]
2016
2017
2018 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2019
2020
2021 When this interface appears, it indicates that the download has been completed.
2022
2023 [[image:image-20220620160723-8.png]]
2024
2025
2026 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
2027
2028
2029
2030 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
2031
2032
2033 [[image:image-20220623110706-1.png]]
2034
2035
2036 [[image:image-20220623112117-4.png||height="459" width="343"]]
2037
2038
2039 (((
2040 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.
2041 )))
2042
2043
2044 Input password and ATZ to activate LHT65N,As shown below:
2045
2046 [[image:image-20220615154519-3.png||height="672" width="807"]]
2047
2048
2049
2050 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
2051
2052
2053 [[image:image-20220623110706-1.png]]
2054
2055
2056 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
2057
2058 [[image:image-20220615170542-5.png]]
2059
2060
2061
2062 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
2063
2064 (% _msthash="506146" _msttexthash="52173160" %)
2065 First connect the four lines；
2066
2067 (% _msthash="506146" _msttexthash="52173160" %)
2068 [[image:image-20220623113959-5.png||height="528" width="397"]]
2069
2070 (% _msthash="506146" _msttexthash="52173160" %)
2071 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
2072
2073
2074
2075 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2076
2077 [[image:image-20220615171334-6.png]]
2078
2079
2080 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2081
2082
2083 When this interface appears, it indicates that the download has been completed.
2084
2085 [[image:image-20220620160723-8.png]]
2086
2087
2088 Finally,restart reset device again
2089
2090
2091
2092 = 7. Order Info =
2093
2094
2095 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
2096
2097 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
2098
2099 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
2100 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
2101 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
2102 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
2103 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
2104 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
2105 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
2106 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
2107
2108 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
2109
2110 * (% style="color:red" %)**E3**(%%): External Temperature Probe
2111
2112 = 8. Packing Info =
2113
2114
2115 **Package Includes**:
2116
2117 * LHT65N Temperature & Humidity Sensor x 1
2118 * Optional external sensor
2119
2120 **Dimension and weight**:
2121
2122 * Device Size:  10 x 10 x 3.5 cm
2123 * Device Weight: 120.5g
2124
2125 = 9. Reference material =
2126
2127
2128 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
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

Applications

Navigation

Copyright ©2010-2022 Dragino Technology Co., LTD. All rights reserved
Dragino Wiki v2.0