Changes for page LA66 LoRaWAN Shield User Manual
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... ... @@ -1,442 +3,263 @@ 1 - 2 - 3 3 {{box cssClass="floatinginfobox" title="**Contents**"}} 4 4 {{toc/}} 5 5 {{/box}} 6 6 7 - {{toc/}}5 += LA66 LoRaWAN Module = 8 8 7 +== What is LA66 LoRaWAN Module == 9 9 9 +**Dragino LA66** is a small wireless LoRaWAN module that offers a very compelling mix of long-range, low power consumption, and secure data transmission. It is designed to facilitate developers to quickly deploy industrial-level LoRaWAN and IoT solutions. It helps users to turn the idea into a practical application and make the Internet of Things a reality. It is easy to create and connect your things everywhere. 10 10 11 - =1.Module=11 +**LA66 **is a ready-to-use module that includes the LoRaWAN v1.0.4 protocol. The LoRaWAN stack used in LA66 is used in more than 1 million LoRaWAN End Devices deployed world widely. This mature LoRaWAN stack greatly reduces the risk for developers to make a LoRaWAN End device. External MCU can use AT command to call LA66 and start to transmit data via the LoRaWAN protocol. 12 12 13 13 14 - ==1.1What isLA66LoRaWAN Module==14 +LA66 is equipped with **TCXO crystal** which ensures the module can achieve the stable performance in extreme temperatures. 15 15 16 16 17 - (% style="color:blue" %)**DraginoLA66**(%%) is a small wireless LoRaWAN modulethat offers a very compelling mix of long-range, low powerconsumption, andsecuredatatransmission. It isdesigned to facilitatedevelopersto quickly deployindustrial-levelLoRaWANand IoT solutions. It helps users to turn theidea into a practical application and make the Internet of Things a reality. It iseasyto create and connect your things everywhere.17 +**Each LA66 **module includes a world-unique OTAA key for LoRaWAN registration. 18 18 19 -(% style="color:blue" %)**LA66**(%%) is a ready-to-use module that includes the (% style="color:blue" %)**LoRaWAN v1.0.4 protocol**(%%). The LoRaWAN stack used in LA66 is used in more than 1 million LoRaWAN End Devices deployed world widely. This mature LoRaWAN stack greatly reduces the risk to make stable LoRaWAN Sensors to support different LoRaWAN servers and different countries' standards. External MCU can use AT command to call LA66 and start to transmit data via the LoRaWAN protocol. 20 20 21 -Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration. 22 22 23 - Besides the support of the LoRaWAN protocol, LA66 also supports (% style="color:blue"%)**open-source peer-to-peer LoRa Protocol**(%%)for the none-LoRaWAN application.21 +== Specification == 24 24 25 -LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures. 26 - 27 - 28 -== 1.2 Features == 29 - 30 -* Support LoRaWAN v1.0.4 protocol 31 -* Support peer-to-peer protocol 32 -* TCXO crystal to ensure RF performance on low temperature 33 -* SMD Antenna pad and i-pex antenna connector 34 -* Available in different frequency LoRaWAN frequency bands. 35 -* World-wide unique OTAA keys. 36 -* AT Command via UART-TTL interface 37 -* Firmware upgradable via UART interface 38 -* Ultra-long RF range 39 - 40 -== 1.3 Specification == 41 - 42 -* CPU: 32-bit 48 MHz 43 -* Flash: 256KB 44 -* RAM: 64KB 45 -* Input Power Range: 1.8v ~~ 3.7v 46 -* Power Consumption: < 4uA. 47 -* Frequency Range: 150 MHz ~~ 960 MHz 48 -* Maximum Power +22 dBm constant RF output 49 -* High sensitivity: -148 dBm 50 -* Temperature: 51 -** Storage: -55 ~~ +125℃ 52 -** Operating: -40 ~~ +85℃ 53 -* Humidity: 54 -** Storage: 5 ~~ 95% (Non-Condensing) 55 -** Operating: 10 ~~ 95% (Non-Condensing) 56 -* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm 57 -* LoRa Rx current: <9 mA 58 -* I/O Voltage: 3.3v 59 - 60 -== 1.4 AT Command == 61 - 62 -AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents. 63 - 64 - 65 -== 1.5 Dimension == 66 - 67 67 [[image:image-20220517072526-1.png]] 68 68 25 +Input Power Range: 1.8v ~~ 3.7v 69 69 27 +Power Consumption: < 4uA. 70 70 71 - == 1.6 PinMapping==29 +Frequency Range: 150 MHz ~~ 960 MHz 72 72 31 +Maximum Power +22 dBm constant RF output 73 73 74 - [[image:image-20220523101537-1.png]]33 +High sensitivity: -148 dBm 75 75 35 +Temperature: 76 76 37 +* Storage: -55 ~~ +125℃ 38 +* Operating: -40 ~~ +85℃ 77 77 78 - == 1.7 LandPattern ==40 +Humidity: 79 79 80 -[[image:image-20220517072821-2.png]] 42 +* Storage: 5 ~~ 95% (Non-Condensing) 43 +* Operating: 10 ~~ 95% (Non-Condensing) 81 81 45 +LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm 82 82 47 +LoRa Rx current: <9 mA 83 83 84 - =2. LA66 LoRaWAN Shield=49 +I/O Voltage: 3.3v 85 85 86 86 87 -== 2.1Overview==52 +== AT Command == 88 88 89 - LA66LoRaWAN Shield isthe Arduino shieldbaseon LA66. UserscanuseLA66 LoRaWANShieldtorapidlyaddLoRaWAN or peer-to-peerLoRawirelessfunctiontoArduinoprojects.54 +AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents. 90 90 91 91 92 -== 2.2Features==57 +== Pin Mapping == 93 93 94 -* Arduino Shield base on LA66 LoRaWAN module 95 -* Support LoRaWAN v1.0.4 protocol 96 -* Support peer-to-peer protocol 97 -* TCXO crystal to ensure RF performance on low temperature 98 -* SMA connector 99 -* Available in different frequency LoRaWAN frequency bands. 100 -* World-wide unique OTAA keys. 101 -* AT Command via UART-TTL interface 102 -* Firmware upgradable via UART interface 103 -* Ultra-long RF range 59 +[[image:image-20220523101537-1.png]] 104 104 105 -== 2.3Specification ==61 +== Land Pattern == 106 106 107 -* CPU: 32-bit 48 MHz 108 -* Flash: 256KB 109 -* RAM: 64KB 110 -* Input Power Range: 1.8v ~~ 3.7v 111 -* Power Consumption: < 4uA. 112 -* Frequency Range: 150 MHz ~~ 960 MHz 113 -* Maximum Power +22 dBm constant RF output 114 -* High sensitivity: -148 dBm 115 -* Temperature: 116 -** Storage: -55 ~~ +125℃ 117 -** Operating: -40 ~~ +85℃ 118 -* Humidity: 119 -** Storage: 5 ~~ 95% (Non-Condensing) 120 -** Operating: 10 ~~ 95% (Non-Condensing) 121 -* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm 122 -* LoRa Rx current: <9 mA 123 -* I/O Voltage: 3.3v 63 +[[image:image-20220517072821-2.png]] 124 124 125 -== 2.4 Pin Mapping & LED == 126 126 66 +== Part Number == 127 127 68 +Part Number: **LA66-XXX** 128 128 129 - == 2.5 Example:Use ATCommand to communicatewith LA66 modulevia ArduinoUNO. ==70 +**XX**: The default frequency band 130 130 72 +* **AS923**: LoRaWAN AS923 band 73 +* **AU915**: LoRaWAN AU915 band 74 +* **EU433**: LoRaWAN EU433 band 75 +* **EU868**: LoRaWAN EU868 band 76 +* **KR920**: LoRaWAN KR920 band 77 +* **US915**: LoRaWAN US915 band 78 +* **IN865**: LoRaWAN IN865 band 79 +* **CN470**: LoRaWAN CN470 band 131 131 81 += LA66 LoRaWAN Shield = 132 132 133 - == 2.6Example:JoinTTNnetwork andsendanuplinkmessage,get downlinkmessage.==83 +LA66 LoRaWAN Shield is the Arduino Breakout PCB to fast test the features of LA66 module and turn Arduino to support LoRaWAN. 134 134 85 +== Pin Mapping & LED == 135 135 87 +== Example: Use AT Command to communicate with LA66 module via Arduino UNO. == 136 136 137 -== 2.7Example:LogTemperatureSensor(DHT11)and senddatatoTTN,showt inDataCake. ==89 +== Example: Join TTN network and send an uplink message, get downlink message. == 138 138 91 +== Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. == 139 139 93 +== Upgrade Firmware of LA66 LoRaWAN Shield == 140 140 141 -== 2.8 Upgrade Firmware ofLA66LoRaWAN Shield ==95 +=== what needs to be used === 142 142 97 +1.LA66 LoRaWAN Shield that needs to be upgraded 143 143 144 - ===2.8.1 Items needed forupdate ===99 +2.Arduino 145 145 146 -1. LA66 LoRaWAN Shield 147 -1. Arduino 148 -1. USB TO TTL Adapter 101 +3.USB TO TTL 149 149 150 -[[image:image-20220602100052-2.png ||height="385" width="600"]]103 +[[image:image-20220602100052-2.png]] 151 151 105 +=== Wiring Schematic === 152 152 153 - ===2.8.2Connection ===107 +[[image:image-20220602101311-3.png]] 154 154 109 +LA66 LoRaWAN Shield >>>>>>>>>>>>USB TTL 155 155 156 - [[image:image-20220602101311-3.png||height="276"width="600"]]111 +GND >>>>>>>>>>>>GND 157 157 113 +TXD >>>>>>>>>>>>TXD 158 158 159 - (%style="color:blue"%)**LA66LoRaWANShield**(%%)**<->**(%style="color:blue"%)**USBTTL**115 +RXD >>>>>>>>>>>>RXD 160 160 117 +JP6 of LA66 LoRaWAN Shield needs to be connected with yellow jumper cap 161 161 162 -(% style="background-color:yellow" %)**GND <-> GND 163 -TXD <-> TXD 164 -RXD <-> RXD** 119 +Connect to the PC after connecting the wires 165 165 121 +[[image:image-20220602102240-4.png]] 166 166 167 - Puta jumpercap on JP6 of LA66 LoRaWAN Shield.(thejumper isto power on LA66 module)123 +=== Upgrade steps === 168 168 169 - ConnectUSBTTLAdapterto PCafterconnectingthewires125 +==== Dial the SW1 of the LA66 LoRaWAN Shield to the ISP's location as shown in the figure below ==== 170 170 127 +[[image:image-20220602102824-5.png]] 171 171 172 - [[image:image-20220602102240-4.png||height="304"width="600"]]129 +==== Press the RST switch on the LA66 LoRaWAN Shield once ==== 173 173 131 +[[image:image-20220602104701-12.png]] 174 174 175 -=== 2.8.3Upgrade steps===133 +==== Open the upgrade application software ==== 176 176 135 +Software download link: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/>>https://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/]] 177 177 178 -==== 1. Switch SW1 to put in ISP position ==== 179 - 180 - 181 -[[image:image-20220602102824-5.png||height="306" width="600"]] 182 - 183 - 184 -==== 2. Press the RST switch once ==== 185 - 186 -[[image:image-20220602104701-12.png||height="285" width="600"]] 187 - 188 - 189 -==== 3. Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ==== 190 - 191 - 192 -(% style="color:blue" %)**1. Software download link: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/>>https://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/]]** 193 - 194 - 195 195 [[image:image-20220602103227-6.png]] 196 196 197 - 198 198 [[image:image-20220602103357-7.png]] 199 199 141 +===== Select the COM port corresponding to USB TTL ===== 200 200 201 - 202 -(% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %) 203 -(% style="color:blue" %)**2. Select the COM port corresponding to USB TTL** 204 - 205 - 206 206 [[image:image-20220602103844-8.png]] 207 207 145 +===== Select the bin file to burn ===== 208 208 209 - 210 -(% class="wikigeneratedid" id="HSelectthebinfiletoburn" %) 211 -(% style="color:blue" %)**3. Select the bin file to burn** 212 - 213 - 214 214 [[image:image-20220602104144-9.png]] 215 215 216 - 217 217 [[image:image-20220602104251-10.png]] 218 218 219 - 220 220 [[image:image-20220602104402-11.png]] 221 221 153 +===== Click to start the download ===== 222 222 223 - 224 -(% class="wikigeneratedid" id="HClicktostartthedownload" %) 225 -(% style="color:blue" %)**4. Click to start the download** 226 - 227 227 [[image:image-20220602104923-13.png]] 228 228 157 +===== The following figure appears to prove that the burning is in progress ===== 229 229 230 -(% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %) 231 -(% style="color:blue" %)**5. Check update process** 232 - 233 - 234 234 [[image:image-20220602104948-14.png]] 235 235 161 +===== The following picture appears to prove that the burning is successful ===== 236 236 237 - 238 -(% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %) 239 -(% style="color:blue" %)**The following picture shows that the burning is successful** 240 - 241 241 [[image:image-20220602105251-15.png]] 242 242 165 += LA66 USB LoRaWAN Adapter = 243 243 167 +LA66 USB LoRaWAN Adapter is the USB Adapter for LA66, it combines a USB TTL Chip and LA66 module which can easy to test the LoRaWAN feature by using PC or embedded device which has USB Interface. 244 244 245 - =3.LA66USB LoRaWANAdapter=169 +Before use, please make sure that the computer has installed the CP2102 driver 246 246 171 +== Pin Mapping & LED == 247 247 248 -== 3.1Overview==173 +== Example Send & Get Messages via LoRaWAN in PC == 249 249 250 - LA66 USB LoRaWAN Adapter is designed to fast turnUSB devicestosupportLoRaWAN wirelessfeatures. It combines a CP2101 USB TTLChip and LA66 LoRaWANmodule which caneasytoadd LoRaWAN wireless featuretoPC/ Mobile phone or an embedded device that has USB Interface.175 +Connect the LA66 LoRa Shield to the PC 251 251 177 +[[image:image-20220602171217-1.png||height="615" width="915"]] 252 252 253 -== 3.2 Features == 254 - 255 -* LoRaWAN USB adapter base on LA66 LoRaWAN module 256 -* Ultra-long RF range 257 -* Support LoRaWAN v1.0.4 protocol 258 -* Support peer-to-peer protocol 259 -* TCXO crystal to ensure RF performance on low temperature 260 -* Spring RF antenna 261 -* Available in different frequency LoRaWAN frequency bands. 262 -* World-wide unique OTAA keys. 263 -* AT Command via UART-TTL interface 264 -* Firmware upgradable via UART interface 265 - 266 -== 3.3 Specification == 267 - 268 -* CPU: 32-bit 48 MHz 269 -* Flash: 256KB 270 -* RAM: 64KB 271 -* Input Power Range: 5v 272 -* Frequency Range: 150 MHz ~~ 960 MHz 273 -* Maximum Power +22 dBm constant RF output 274 -* High sensitivity: -148 dBm 275 -* Temperature: 276 -** Storage: -55 ~~ +125℃ 277 -** Operating: -40 ~~ +85℃ 278 -* Humidity: 279 -** Storage: 5 ~~ 95% (Non-Condensing) 280 -** Operating: 10 ~~ 95% (Non-Condensing) 281 -* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm 282 -* LoRa Rx current: <9 mA 283 - 284 -== 3.4 Pin Mapping & LED == 285 - 286 - 287 - 288 -== 3.5 Example: Send & Get Messages via LoRaWAN in PC == 289 - 290 - 291 -Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage. 292 - 293 - 294 -(% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN adapter to PC** 295 - 296 - 297 -[[image:image-20220602171217-1.png||height="538" width="800"]] 298 - 299 - 300 300 Open the serial port tool 301 301 302 302 [[image:image-20220602161617-8.png]] 303 303 304 -[[image:image-20220602161718-9.png||height=" 457" width="800"]]183 +[[image:image-20220602161718-9.png||height="529" width="927"]] 305 305 185 +Press the reset switch RST on the LA66 LoRa Shield. 306 306 187 +The following picture appears to prove that the LA66 LoRa Shield successfully entered the network 307 307 308 - (% style="color:blue" %)**2. Press the reset switch RST on theLA66USB LoRaWAN Adapter to reset it.**189 +[[image:image-20220602161935-10.png]] 309 309 310 - Thefollowingpicture appearstoprove that the LA66 USBLoRaWAN Adapterccessfully Jointhe LoRaWAN network191 +send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data> 311 311 312 - 313 -[[image:image-20220602161935-10.png||height="498" width="800"]] 314 - 315 - 316 - 317 -(% style="color:blue" %)**3. See Uplink Command** 318 - 319 -Command format: (% style="color:#4472c4" %)** AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>** 320 - 321 321 example: AT+SENDB=01,02,8,05820802581ea0a5 322 322 323 -[[image:image-20220602162157-11.png ||height="497" width="800"]]195 +[[image:image-20220602162157-11.png]] 324 324 197 +Check to see if TTN received the message 325 325 199 +[[image:image-20220602162331-12.png||height="547" width="1044"]] 326 326 327 - (%style="color:blue"%)**4.ChecktoseeifTTNreceivedthemessage**201 +== Example Send & Get Messages via LoRaWAN in RPi == 328 328 329 - [[image:image-20220602162331-12.png||height="420"width="800"]]203 +Connect the LA66 LoRa Shield to the RPI 330 330 205 +[[image:image-20220602171233-2.png||height="592" width="881"]] 331 331 207 +Log in to the RPI's terminal and connect to the serial port 332 332 333 - == 3.6 Example: Send PC's CPU/RAM usageto TTN viaython==209 +[[image:image-20220602153146-3.png]] 334 334 211 +Press the reset switch RST on the LA66 LoRa Shield. 212 +The following picture appears to prove that the LA66 LoRa Shield successfully entered the network 335 335 336 - **Use python as an example:**[[https:~~/~~/github.com/dragino/LA66/blob/main/Send_information_to_TTN_WindosPC.py>>https://github.com/dragino/LA66/blob/main/Send_information_to_TTN_WindosPC.py]]214 +[[image:image-20220602154928-5.png]] 337 337 216 +send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data> 338 338 339 -(% style="color:red" %)**Preconditions:** 340 - 341 -(% style="color:red" %)**1. LA66 USB LoRaWAN Adapter works fine** 342 - 343 -(% style="color:red" %)**2. LA66 USB LoRaWAN Adapter is registered with TTN** 344 - 345 - 346 - 347 -(% style="color:blue" %)**Steps for usage:** 348 - 349 -(% style="color:blue" %)**1.**(%%) Press the reset switch RESET on the LA66 USB LoRaWAN Adapter 350 - 351 -(% style="color:blue" %)**2.**(%%) Run the python script in PC and see the TTN 352 - 353 -[[image:image-20220602115852-3.png||height="450" width="1187"]] 354 - 355 - 356 - 357 -== 3.7 Example: Send & Get Messages via LoRaWAN in RPi == 358 - 359 - 360 -Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage. 361 - 362 - 363 -(% style="color:blue" %)**~1. Connect the LA66 USB LoRaWAN Adapter to the Raspberry Pi** 364 - 365 -[[image:image-20220602171233-2.png||height="538" width="800"]] 366 - 367 - 368 - 369 -(% style="color:blue" %)**2. Install Minicom in RPi.** 370 - 371 -(% id="cke_bm_509388S" style="display:none" %) (%%)Enter the following command in the RPi terminal 372 - 373 - (% style="background-color:yellow" %)**apt update** 374 - 375 - (% style="background-color:yellow" %)**apt install minicom** 376 - 377 - 378 -Use minicom to connect to the RPI's terminal 379 - 380 -[[image:image-20220602153146-3.png||height="439" width="500"]] 381 - 382 - 383 - 384 -(% style="color:blue" %)**3. Press the reset switch RST on the LA66 USB LoRaWAN Adapter.** 385 -The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully entered the network 386 - 387 -[[image:image-20220602154928-5.png||height="436" width="500"]] 388 - 389 - 390 - 391 -(% style="color:blue" %)**4. Send Uplink message** 392 - 393 -Format: **(% style="color:#4472C4" %)AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>** 394 - 395 395 example: AT+SENDB=01,02,8,05820802581ea0a5 396 396 220 +[[image:image-20220602160339-6.png]] 397 397 398 -[[image:image-20220602160339-6.png||height="517" width="600"]] 399 - 400 - 401 - 402 402 Check to see if TTN received the message 403 403 404 -[[image:image-20220602160627-7.png||height=" 369" width="800"]]224 +[[image:image-20220602160627-7.png||height="468" width="1013"]] 405 405 226 +=== Install Minicom === 406 406 228 +Enter the following command in the RPI terminal 407 407 408 - == 3.8 Example: LA66 USB Module gota message from LA66 LoRa Shieldnd sendthesensor data to NodeRed. ==230 +apt update 409 409 232 +[[image:image-20220602143155-1.png]] 410 410 234 +apt install minicom 411 411 412 - == 3.9 UpgradeFirmwareof LA66 USB LoRaWAN Adapter ==236 +[[image:image-20220602143744-2.png]] 413 413 238 +=== Send PC's CPU/RAM usage to TTN via script. === 414 414 240 +==== Take python as an example: ==== 415 415 242 +===== Preconditions: ===== 416 416 417 - = 4.OrderInfo=244 +1.LA66 USB LoRaWAN Adapter works fine 418 418 246 +2.LA66 USB LoRaWAN Adapter is registered with TTN 419 419 420 - PartNumber: **LA66-XXX**, **LA66-LoRaWAN-Shield-XXX****LA66-USB-LoRaWAN-Adapter-XXX**248 +===== Steps for usage ===== 421 421 250 +1.Press the reset switch RESET on the LA66 USB LoRaWAN Adapter 422 422 423 - **XXX**:Thedefaultfrequency band252 +2.Run the script and see the TTN 424 424 425 -* **AS923**: LoRaWAN AS923 band 426 -* **AU915**: LoRaWAN AU915 band 427 -* **EU433**: LoRaWAN EU433 band 428 -* **EU868**: LoRaWAN EU868 band 429 -* **KR920**: LoRaWAN KR920 band 430 -* **US915**: LoRaWAN US915 band 431 -* **IN865**: LoRaWAN IN865 band 432 -* **CN470**: LoRaWAN CN470 band 433 -* **PP**: Peer to Peer LoRa Protocol 254 +[[image:image-20220602115852-3.png]] 434 434 435 435 436 436 258 +== Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. == 437 437 438 -= 5. Reference = 439 439 440 - *HardwareDesignFileforLA66LoRaWAN Shield, LA66USB LoRaWAN Adapter: [[Download>>https://www.dropbox.com/sh/a3wbmdcvqjxaqw5/AADZfvAiykJTK624RgMquH86a?dl=0]]261 +== Upgrade Firmware of LA66 USB LoRaWAN Adapter == 441 441 442 442