Last modified by Mengting Qiu on 2024/04/30 14:27
<
From version < 46.1 >
edited by Edwin Chen
on 2022/05/23 00:08
To version < 18.1 >
edited by Edwin Chen
on 2022/05/15 12:38
>
Change comment: There is no comment for this version

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57 57  * ±2°C accuracy from -55°C to +125°C
58 58  * Operating Range: -55 °C ~~ 125 °C
59 59  
60 +
60 60  = Connect LHT65N to IoT Server =
61 61  
62 62  == How does LHT65N work? ==
... ... @@ -71,8 +71,9 @@
71 71  The LHT65N has two working modes:
72 72  
73 73  * **Deep Sleep Mode**: LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
74 -* **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, LHT65 will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
75 +* **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, LHT65 will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode.
75 75  
77 +
76 76  The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
77 77  
78 78  [[image:image-20220515123819-1.png||height="379" width="317"]]
... ... @@ -82,247 +82,8 @@
82 82  |**Pressing ACT for more than 3s**|Active Device|green led will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network. green led will solid turn on for 5 seconds after join in network.
83 83  |**Fast press ACT 5 times**|Deactivate Device|red led will solid on for 5 seconds. This means LHT65N is in Deep Sleep Mode.
84 84  
85 -== Example to join LoRaWAN network ==
86 86  
87 -(% class="wikigeneratedid" %)
88 -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.
89 89  
90 -(% class="wikigeneratedid" %)
91 -[[image:image-20220522232442-1.png||height="387" width="648"]]
92 -
93 -Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
94 -
95 -
96 -=== **Step 1**: Create Device n TTN ===
97 -
98 -Create a device in TTN V3 with the OTAA keys from LHT65N.
99 -
100 -Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
101 -
102 -[[image:image-20220522232812-2.png||height="219" width="279"]]
103 -
104 -User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
105 -
106 -Add APP EUI in the application.
107 -
108 -[[image:image-20220522232916-3.png]]
109 -
110 -
111 -[[image:image-20220522232932-4.png]]
112 -
113 -
114 -[[image:image-20220522232954-5.png]]
115 -
116 -Note: LHT65N use same payload as LHT65.
117 -
118 -[[image:image-20220522233026-6.png]]
119 -
120 -
121 -Input APP EUI,  APP KEY and DEV EUI:
122 -
123 -[[image:image-20220522233118-7.png]]
124 -
125 -
126 -=== Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
127 -
128 -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.
129 -
130 -[[image:image-20220522233300-8.png]]
131 -
132 -
133 -== Uplink Payload: ==
134 -
135 -The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and(% class="mark" %) every 20 minutes(%%) send one uplink by default.
136 -
137 -After each uplink, the (% class="mark" %)BLUE LED(%%) will blink once.
138 -
139 -
140 -(% style="width:572px" %)
141 -|(% style="width:106px" %)**Size(bytes)**|(% style="width:71px" %)**2**|(% style="width:128px" %)**2**|(% style="width:103px" %)**2**|(% style="width:72px" %)**1**|(% style="width:89px" %)**4**
142 -|(% style="width:106px" %)**Value**|(% style="width:71px" %)[[BAT>>path:#Battery]]|(% style="width:128px" %)(((
143 -[[Built-In>>path:#SHT20_Temperature]]
144 -
145 -[[Temperature>>path:#SHT20_Temperature]]
146 -)))|(% style="width:103px" %)(((
147 -[[Built-in>>path:#SHT20_Humidity]]
148 -
149 -[[Humidity>>path:#SHT20_Humidity]]
150 -)))|(% style="width:72px" %)[[Ext>>path:#Extension_Sensor]] #|(% style="width:89px" %)[[Ext value>>path:#Extension_sensor_value]]
151 -
152 -* The First 6 bytes: has fix meanings for every LHT65N.
153 -* The 7th byte (EXT #): defines the external sensor model.
154 -* The 8^^th^^ ~~ 11^^th^^ byte: the value for external sensor value. The definition is based on external sensor type. (If EXT=0, there won’t be these four bytes.)
155 -
156 -=== Decoder in TTN V3 ===
157 -
158 -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.
159 -
160 -Below is the position to put the decoder and LHT65N decoder can be download from here:
161 -
162 -[[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]
163 -
164 -[[image:image-20220522234118-10.png]]
165 -
166 -
167 -=== BAT-Battery Info ===
168 -
169 -These two bytes of BAT include the battery state and the actually voltage
170 -
171 -(% style="width:646px" %)
172 -|Bit(bit)|(% style="width:272px" %)[15:14]|(% style="width:214px" %)[13:0]
173 -|Value|(% style="width:272px" %)(((
174 -BAT Status
175 -
176 -00(b): Ultra Low ( BAT <= 2.50v)
177 -
178 -01(b): Low  (2.50v <=BAT <= 2.55v)
179 -
180 -10(b): OK   (2.55v <= BAT <=2.65v)
181 -
182 -11(b): Good   (BAT >= 2.65v)
183 -)))|(% style="width:214px" %)Actually BAT voltage
184 -
185 -[[image:image-20220522235639-1.png]]
186 -
187 -Check the battery voltage for LHT65N.
188 -
189 -* BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
190 -* Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
191 -
192 -=== Built-in Temperature ===
193 -
194 -[[image:image-20220522235639-2.png]]
195 -
196 -* Temperature:  0x0ABB/100=27.47℃
197 -
198 -
199 -[[image:image-20220522235639-3.png]]
200 -
201 -* Temperature:  (0xF5C6-65536)/100=-26.18℃
202 -
203 -
204 -=== Built-in Humidity ===
205 -
206 -[[image:image-20220522235639-4.png]]
207 -
208 -* Humidity:    0x025C/10=60.4%
209 -
210 -
211 -=== Ext # ===
212 -
213 -Bytes for External Sensor:
214 -
215 -(% style="width:624px" %)
216 -|(% style="width:139px" %)**EXT # Value**|(% style="width:484px" %)**External Sensor Type**
217 -|(% style="width:139px" %)0x01|(% style="width:484px" %)Sensor E3, Temperature Sensor
218 -|(% style="width:139px" %)0x09|(% style="width:484px" %)Sensor E3, Temperature Sensor, Datalog Mod
219 -
220 -
221 -=== Ext value ===
222 -
223 -==== Ext~=1, E3 Temperature Sensor ====
224 -
225 -[[image:image-20220522235639-5.png]]
226 -
227 -
228 -* DS18B20 temp=0x0ADD/100=27.81℃
229 -
230 -The last 2 bytes of data are meaningless
231 -
232 -
233 -
234 -[[image:image-20220522235639-6.png]]
235 -
236 -* External temperature= (0xF54F-65536)/100=-27.37℃
237 -
238 -The last 2 bytes of data are meaningless
239 -
240 -
241 -If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
242 -
243 -
244 -==== Ext~=9, E3 sensor with Unix Time stamp ====
245 -
246 -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:
247 -
248 -
249 -(% style="width:697px" %)
250 -|(% style="width:96px" %)**Size(bytes)**|(% style="width:164px" %)**2**|(% style="width:104px" %)**2**|(% style="width:106px" %)**2**|(% style="width:108px" %)**1**|(% style="width:116px" %)**4**
251 -|(% style="width:96px" %)**Value**|(% style="width:164px" %)[[External temperature>>path:#DS18b20_value]]|(% style="width:104px" %)(((
252 -[[Built-In>>path:#SHT20_Temperature]]
253 -
254 -[[Temperature>>path:#SHT20_Temperature]]
255 -)))|(% style="width:106px" %)(((
256 -[[BAT Status &>>path:#BAT_Humidity]]
257 -
258 -[[Built-in>>path:#BAT_Humidity]]
259 -
260 -[[Humidity>>path:#BAT_Humidity]]
261 -)))|(% style="width:108px" %)[[Status & Ext>>path:#Status_EXT]]|(% style="width:116px" %)(((
262 -[[Unix>>path:#Unix_Time_Stamp]]
263 -
264 -[[Time Stamp>>path:#Unix_Time_Stamp]]
265 -)))
266 -
267 -* **Battery status & **[[**Built-in Humidity**>>path:#SHT20_Humidity]]
268 -
269 -(% style="width:587px" %)
270 -|Bit(bit)|(% style="width:280px" %)[15:14]|(% style="width:136px" %)[11:0]
271 -|Value|(% style="width:280px" %)(((
272 -BAT Status
273 -
274 -00(b): Ultra Low ( BAT <= 2.50v)
275 -
276 -01(b): Low  (2.50v <=BAT <= 2.55v)
277 -
278 -10(b): OK   (2.55v <= BAT <=2.65v)
279 -
280 -11(b): Good   (BAT >= 2.65v)
281 -)))|(% style="width:136px" %)(((
282 -[[Built-in Humidity>>path:#SHT20_Humidity]]
283 -
284 -
285 -)))
286 -
287 -
288 -* **Status & Ext Byte**
289 -
290 -(% style="width:732px" %)
291 -|(% style="width:128px" %)**Bits**|(% style="width:102px" %)**7**|(% style="width:145px" %)**6**|(% style="width:117px" %)**5**|(% style="width:147px" %)**4**|(% style="width:90px" %)**[3:0]**
292 -|(% style="width:128px" %)**Status & Ext**|(% style="width:102px" %)Not Defined|(% style="width:145px" %)Poll Message Flag|(% style="width:117px" %)Sync time OK|(% style="width:147px" %)Unix Time Request|(% style="width:90px" %)(((
293 -Ext:
294 -
295 -0b(1001)
296 -)))
297 -
298 -* Poll Message Flag: 1: This message is a poll message reply, 0: means this is a normal uplink.
299 -* 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.
300 -* 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)
301 -
302 -
303 -
304 -== LED Indicator ==
305 -
306 -The LHT65N has a triple color LED which for easy shows different stage.
307 -
308 -While pressing ACT button, the LED will work as per LED status with ACT button.
309 -
310 -In a normal working state:
311 -
312 -* For each uplink, the BLUE LED or RED LED will blink once.
313 -* BLUE LED when an external sensor is connected
314 -* RED LED when an external sensor is not connected
315 -* For each success downlink, the PURPLE LED will blink once
316 -
317 -----
318 -
319 -== Installation ==
320 -
321 -[[image:image-20220516231650-1.png||height="632" width="620"]]
322 -
323 -
324 -
325 -
326 326  = Sensors & Accessories =
327 327  
328 328  == E3 Temperature Probe ==
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