Changes for page LHT52 - LoRaWAN Temperature & Humidity Sensor User Manual
Last modified by Mengting Qiu on 2024/04/30 14:27
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... ... @@ -123,7 +123,7 @@ 123 123 [[image:image-20220522233118-7.png]] 124 124 125 125 126 -=== Step :Activate LHT65N by pressing the ACT button for more than 5 seconds. ===126 +=== Step2 Activate LHT65N by pressing the ACT button for more than 5 seconds. === 127 127 128 128 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. 129 129 ... ... @@ -130,177 +130,6 @@ 130 130 [[image:image-20220522233300-8.png]] 131 131 132 132 133 -== 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 - 304 304 == LED Indicator == 305 305 306 306 The LHT65N has a triple color LED which for easy shows different stage.
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