Changes for page LA66 LoRaWAN Shield User Manual
Last modified by Xiaoling on 2023/05/26 14:19
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... ... @@ -1,259 +1,445 @@ 1 -{{box cssClass="floatinginfobox" title="**Contents**"}} 1 + 2 + 2 2 {{toc/}} 3 -{{/box}} 4 4 5 -= LA66 LoRaWAN Module = 6 6 7 -== What is LA66 LoRaWAN Module == 8 8 9 - **DraginoLA66** isa small wirelessLoRaWANmodulethat 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 LoRa 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 program, create and connect your things everywhere.7 += 1. LA66 LoRaWAN Module = 10 10 11 -**LA66 **is a ready-to-use module which includes the LoRaWAN v1.0.4 protocol. External MCU can use AT command to call LA66 and start to transmit data via the LoRaWAN protocol. 12 12 13 - **EachLA66**moduleincludesa world unique OTAAkey forLoRaWANregistration.10 +== 1.1 What is LA66 LoRaWAN Module == 14 14 15 15 13 +(% style="color:blue" %)**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. 16 16 17 -== Specification==15 +(% 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. 18 18 19 - [[image:image-20220517072526-1.png]]17 +Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration. 20 20 21 - InputPower Range:1.8v~~ 3.7v19 +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. 22 22 23 - Power Consumption:<4uA.21 +LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures. 24 24 25 -Frequency Range: 150 MHz ~~ 960 MHz 26 26 27 - MaximumPower +22dBm constantRF output24 +== 1.2 Features == 28 28 29 -High sensitivity: -148 dBm 26 +* Support LoRaWAN v1.0.4 protocol 27 +* Support peer-to-peer protocol 28 +* TCXO crystal to ensure RF performance on low temperature 29 +* SMD Antenna pad and i-pex antenna connector 30 +* Available in different frequency LoRaWAN frequency bands. 31 +* World-wide unique OTAA keys. 32 +* AT Command via UART-TTL interface 33 +* Firmware upgradable via UART interface 34 +* Ultra-long RF range 30 30 31 -Temperature: 32 32 33 -* Storage: -55 ~~ +125℃ 34 -* Operating: -40 ~~ +85℃ 35 35 36 - Humidity:38 +== 1.3 Specification == 37 37 38 -* Storage: 5 ~~ 95% (Non-Condensing) 39 -* Operating: 10 ~~ 95% (Non-Condensing) 40 +* CPU: 32-bit 48 MHz 41 +* Flash: 256KB 42 +* RAM: 64KB 43 +* Input Power Range: 1.8v ~~ 3.7v 44 +* Power Consumption: < 4uA. 45 +* Frequency Range: 150 MHz ~~ 960 MHz 46 +* Maximum Power +22 dBm constant RF output 47 +* High sensitivity: -148 dBm 48 +* Temperature: 49 +** Storage: -55 ~~ +125℃ 50 +** Operating: -40 ~~ +85℃ 51 +* Humidity: 52 +** Storage: 5 ~~ 95% (Non-Condensing) 53 +** Operating: 10 ~~ 95% (Non-Condensing) 54 +* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm 55 +* LoRa Rx current: <9 mA 56 +* I/O Voltage: 3.3v 40 40 41 -LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm 42 42 43 -LoRa Rx current: <9 mA 44 44 45 - I/OVoltage:3.3v60 +== 1.4 AT Command == 46 46 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. 47 47 48 -== AT Command == 49 49 50 - ATCommandis valid over Main TXDand Main RXD. Serial Baud Rate is 9600. AT commands can befoundin AT Commanddocuments.65 +== 1.5 Dimension == 51 51 67 +[[image:image-20220517072526-1.png]] 52 52 53 -== Pin Mapping == 54 54 70 + 71 +== 1.6 Pin Mapping == 72 + 73 + 55 55 [[image:image-20220523101537-1.png]] 56 56 57 -== Land Pattern == 58 58 77 + 78 +== 1.7 Land Pattern == 79 + 59 59 [[image:image-20220517072821-2.png]] 60 60 61 61 62 -== Part Number == 63 63 64 - PartNumber:**LA66-XXX**84 += 2. LA66 LoRaWAN Shield = 65 65 66 -**XX**: The default frequency band 67 67 68 -* **AS923**: LoRaWAN AS923 band 69 -* **AU915**: LoRaWAN AU915 band 70 -* **EU433**: LoRaWAN EU433 band 71 -* **EU868**: LoRaWAN EU868 band 72 -* **KR920**: LoRaWAN KR920 band 73 -* **US915**: LoRaWAN US915 band 74 -* **IN865**: LoRaWAN IN865 band 75 -* **CN470**: LoRaWAN CN470 band 87 +== 2.1 Overview == 76 76 77 - =LA66 LoRaWAN Shield=89 +LA66 LoRaWAN Shield is the Arduino shield base on LA66. Users can use LA66 LoRaWAN Shield to rapidly add LoRaWAN or peer-to-peer LoRa wireless function to Arduino projects. 78 78 79 -LA66 LoRaWAN Shield is the Arduino Breakout PCB to fast test the features of LA66 module and turn Arduino to support LoRaWAN. 80 80 81 -== PinMapping& LED==92 +== 2.2 Features == 82 82 83 -== Example: Use AT Command to communicate with LA66 module via Arduino UNO. == 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 84 84 85 -== Example: Join TTN network and send an uplink message, get downlink message. == 86 86 87 -== Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. == 88 88 89 -== UpgradeFirmware ofLA66 LoRaWAN Shield==107 +== 2.3 Specification == 90 90 91 -=== what needs to be used === 109 +* CPU: 32-bit 48 MHz 110 +* Flash: 256KB 111 +* RAM: 64KB 112 +* Input Power Range: 1.8v ~~ 3.7v 113 +* Power Consumption: < 4uA. 114 +* Frequency Range: 150 MHz ~~ 960 MHz 115 +* Maximum Power +22 dBm constant RF output 116 +* High sensitivity: -148 dBm 117 +* Temperature: 118 +** Storage: -55 ~~ +125℃ 119 +** Operating: -40 ~~ +85℃ 120 +* Humidity: 121 +** Storage: 5 ~~ 95% (Non-Condensing) 122 +** Operating: 10 ~~ 95% (Non-Condensing) 123 +* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm 124 +* LoRa Rx current: <9 mA 125 +* I/O Voltage: 3.3v 92 92 93 -1.LA66 LoRaWAN Shield that needs to be upgraded 94 94 95 -2.Arduino 96 96 97 - 3.USBTOTTL129 +== 2.4 Pin Mapping & LED == 98 98 99 -[[image:image-20220602100052-2.png]] 100 100 101 -=== Wiring Schematic === 102 102 103 - [[image:image-20220602101311-3.png]]133 +== 2.5 Example: Use AT Command to communicate with LA66 module via Arduino UNO. == 104 104 105 -LA66 LoRaWAN Shield >>>>>>>>>>>>USB TTL 106 106 107 -GND >>>>>>>>>>>>GND 108 108 109 - TXD>>>>>>>>>>>>TXD137 +== 2.6 Example: Join TTN network and send an uplink message, get downlink message. == 110 110 111 -RXD >>>>>>>>>>>>RXD 112 112 113 -JP6 of LA66 LoRaWAN Shield needs to be connected with yellow jumper cap 114 114 115 - ConnecttothePCafterconnectingthewires141 +== 2.7 Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. == 116 116 117 -[[image:image-20220602102240-4.png]] 118 118 119 -=== Upgrade steps === 120 120 121 -== ==DialtheSW1oftheLA66 LoRaWAN Shieldto the ISP's location as shown in the figure below====145 +== 2.8 Upgrade Firmware of LA66 LoRaWAN Shield == 122 122 123 -[[image:image-20220602102824-5.png]] 124 124 125 -=== =PresstheRSTswitchontheLA66 LoRaWAN Shield once ====148 +=== 2.8.1 Items needed for update === 126 126 127 -[[image:image-20220602104701-12.png]] 150 +1. LA66 LoRaWAN Shield 151 +1. Arduino 152 +1. USB TO TTL Adapter 128 128 129 - ==== Open theupgradeapplicationsoftware====154 +[[image:image-20220602100052-2.png||height="385" width="600"]] 130 130 131 -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/]] 132 132 157 +=== 2.8.2 Connection === 158 + 159 + 160 +[[image:image-20220602101311-3.png||height="276" width="600"]] 161 + 162 + 163 +(% style="color:blue" %)**LA66 LoRaWAN Shield**(%%) **<->** (% style="color:blue" %)**USB TTL** 164 + 165 +(% style="background-color:yellow" %)**GND <-> GND 166 +TXD <-> TXD 167 +RXD <-> RXD** 168 + 169 + 170 +Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module) 171 + 172 +Connect USB TTL Adapter to PC after connecting the wires 173 + 174 + 175 +[[image:image-20220602102240-4.png||height="304" width="600"]] 176 + 177 + 178 +=== 2.8.3 Upgrade steps === 179 + 180 + 181 +==== 1. Switch SW1 to put in ISP position ==== 182 + 183 + 184 +[[image:image-20220602102824-5.png||height="306" width="600"]] 185 + 186 + 187 +==== 2. Press the RST switch once ==== 188 + 189 +[[image:image-20220602104701-12.png||height="285" width="600"]] 190 + 191 + 192 +==== 3. Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ==== 193 + 194 + 195 +(% 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/]]** 196 + 197 + 133 133 [[image:image-20220602103227-6.png]] 134 134 200 + 135 135 [[image:image-20220602103357-7.png]] 136 136 137 -===== Select the COM port corresponding to USB TTL ===== 138 138 204 + 205 +(% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %) 206 +(% style="color:blue" %)**2. Select the COM port corresponding to USB TTL** 207 + 208 + 139 139 [[image:image-20220602103844-8.png]] 140 140 141 -===== Select the bin file to burn ===== 142 142 212 + 213 +(% class="wikigeneratedid" id="HSelectthebinfiletoburn" %) 214 +(% style="color:blue" %)**3. Select the bin file to burn** 215 + 216 + 143 143 [[image:image-20220602104144-9.png]] 144 144 219 + 145 145 [[image:image-20220602104251-10.png]] 146 146 222 + 147 147 [[image:image-20220602104402-11.png]] 148 148 149 -===== Click to start the download ===== 150 150 226 + 227 +(% class="wikigeneratedid" id="HClicktostartthedownload" %) 228 +(% style="color:blue" %)**4. Click to start the download** 229 + 151 151 [[image:image-20220602104923-13.png]] 152 152 153 -===== The following figure appears to prove that the burning is in progress ===== 154 154 233 +(% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %) 234 +(% style="color:blue" %)**5. Check update process** 235 + 236 + 155 155 [[image:image-20220602104948-14.png]] 156 156 157 -===== The following picture appears to prove that the burning is successful ===== 158 158 240 + 241 +(% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %) 242 +(% style="color:blue" %)**The following picture shows that the burning is successful** 243 + 159 159 [[image:image-20220602105251-15.png]] 160 160 161 -= LA66 USB LoRaWAN Adapter = 162 162 163 -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. 164 164 165 - Beforeuse,pleasemakesure that the computer hasinstalledheCP2102 driver248 += 3. LA66 USB LoRaWAN Adapter = 166 166 167 -== Pin Mapping & LED == 168 168 169 -== ExampleSend & Get MessagesviaLoRaWAN in PC==251 +== 3.1 Overview == 170 170 171 - Connect the LA66 LoRaShieldto the PC253 +LA66 USB LoRaWAN Adapter is designed to fast turn USB devices to support LoRaWAN wireless features. It combines a CP2101 USB TTL Chip and LA66 LoRaWAN module which can easy to add LoRaWAN wireless feature to PC / Mobile phone or an embedded device that has USB Interface. 172 172 173 -[[image:image-20220602171217-1.png||height="615" width="915"]] 174 174 256 +== 3.2 Features == 257 + 258 +* LoRaWAN USB adapter base on LA66 LoRaWAN module 259 +* Ultra-long RF range 260 +* Support LoRaWAN v1.0.4 protocol 261 +* Support peer-to-peer protocol 262 +* TCXO crystal to ensure RF performance on low temperature 263 +* Spring RF antenna 264 +* Available in different frequency LoRaWAN frequency bands. 265 +* World-wide unique OTAA keys. 266 +* AT Command via UART-TTL interface 267 +* Firmware upgradable via UART interface 268 + 269 +== 3.3 Specification == 270 + 271 +* CPU: 32-bit 48 MHz 272 +* Flash: 256KB 273 +* RAM: 64KB 274 +* Input Power Range: 5v 275 +* Frequency Range: 150 MHz ~~ 960 MHz 276 +* Maximum Power +22 dBm constant RF output 277 +* High sensitivity: -148 dBm 278 +* Temperature: 279 +** Storage: -55 ~~ +125℃ 280 +** Operating: -40 ~~ +85℃ 281 +* Humidity: 282 +** Storage: 5 ~~ 95% (Non-Condensing) 283 +** Operating: 10 ~~ 95% (Non-Condensing) 284 +* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm 285 +* LoRa Rx current: <9 mA 286 + 287 +== 3.4 Pin Mapping & LED == 288 + 289 + 290 + 291 +== 3.5 Example: Send & Get Messages via LoRaWAN in PC == 292 + 293 + 294 +Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage. 295 + 296 + 297 +(% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN adapter to PC** 298 + 299 + 300 +[[image:image-20220602171217-1.png||height="538" width="800"]] 301 + 302 + 175 175 Open the serial port tool 176 176 177 177 [[image:image-20220602161617-8.png]] 178 178 179 -[[image:image-20220602161718-9.png||height="5 29" width="927"]]307 +[[image:image-20220602161718-9.png||height="457" width="800"]] 180 180 181 -Press the reset switch RST on the LA66 LoRa Shield. 182 182 183 -The following picture appears to prove that the LA66 LoRa Shield successfully entered the network 184 184 185 - [[image:image-20220602161935-10.png]]311 +(% style="color:blue" %)**2. Press the reset switch RST on the LA66 USB LoRaWAN Adapter to reset it.** 186 186 187 - sendinstructions:AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>313 +The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully Join the LoRaWAN network 188 188 315 + 316 +[[image:image-20220602161935-10.png||height="498" width="800"]] 317 + 318 + 319 + 320 +(% style="color:blue" %)**3. See Uplink Command** 321 + 322 +Command format: (% style="color:#4472c4" %)** AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>** 323 + 189 189 example: AT+SENDB=01,02,8,05820802581ea0a5 190 190 191 -[[image:image-20220602162157-11.png]] 326 +[[image:image-20220602162157-11.png||height="497" width="800"]] 192 192 193 -Check to see if TTN received the message 194 194 195 -[[image:image-20220602162331-12.png||height="547" width="1044"]] 196 196 197 - ==ExampleSend&GetMessagesviaLoRaWAN inRPi==330 +(% style="color:blue" %)**4. Check to see if TTN received the message** 198 198 199 - Connect theLA66LoRa Shieldtothe RPI332 +[[image:image-20220602162331-12.png||height="420" width="800"]] 200 200 201 -[[image:image-20220602171233-2.png||height="592" width="881"]] 202 202 203 -Log in to the RPI's terminal and connect to the serial port 204 204 205 - [[image:image-20220602153146-3.png]]336 +== 3.6 Example: Send PC's CPU/RAM usage to TTN via python == 206 206 207 -Press the reset switch RST on the LA66 LoRa Shield. 208 -The following picture appears to prove that the LA66 LoRa Shield successfully entered the network 209 209 210 -[[image:imag e-20220602154928-5.png]]339 +**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]] 211 211 212 -send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data> 213 213 342 +(% style="color:red" %)**Preconditions:** 343 + 344 +(% style="color:red" %)**1. LA66 USB LoRaWAN Adapter works fine** 345 + 346 +(% style="color:red" %)**2. LA66 USB LoRaWAN Adapter is registered with TTN** 347 + 348 + 349 + 350 +(% style="color:blue" %)**Steps for usage:** 351 + 352 +(% style="color:blue" %)**1.**(%%) Press the reset switch RESET on the LA66 USB LoRaWAN Adapter 353 + 354 +(% style="color:blue" %)**2.**(%%) Run the python script in PC and see the TTN 355 + 356 +[[image:image-20220602115852-3.png||height="450" width="1187"]] 357 + 358 + 359 + 360 +== 3.7 Example: Send & Get Messages via LoRaWAN in RPi == 361 + 362 + 363 +Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage. 364 + 365 + 366 +(% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN Adapter to the Raspberry Pi** 367 + 368 +[[image:image-20220602171233-2.png||height="538" width="800"]] 369 + 370 + 371 + 372 +(% style="color:blue" %)**2. Install Minicom in RPi.** 373 + 374 +(% id="cke_bm_509388S" style="display:none" %) (%%)Enter the following command in the RPi terminal 375 + 376 + (% style="background-color:yellow" %)**apt update** 377 + 378 + (% style="background-color:yellow" %)**apt install minicom** 379 + 380 + 381 +Use minicom to connect to the RPI's terminal 382 + 383 +[[image:image-20220602153146-3.png||height="439" width="500"]] 384 + 385 + 386 + 387 +(% style="color:blue" %)**3. Press the reset switch RST on the LA66 USB LoRaWAN Adapter.**(%%) 388 +(% style="color:blue" %)The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully entered the network 389 + 390 +[[image:image-20220602154928-5.png||height="436" width="500"]] 391 + 392 + 393 + 394 +(% style="color:blue" %)**4. Send Uplink message** 395 + 396 +Format: (% style="color:#4472c4" %)**AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>** 397 + 214 214 example: AT+SENDB=01,02,8,05820802581ea0a5 215 215 216 -[[image:image-20220602160339-6.png]] 217 217 401 +[[image:image-20220602160339-6.png||height="517" width="600"]] 402 + 403 + 404 + 218 218 Check to see if TTN received the message 219 219 220 -[[image:image-20220602160627-7.png||height=" 468" width="1013"]]407 +[[image:image-20220602160627-7.png||height="369" width="800"]] 221 221 222 -=== Install Minicom === 223 223 224 -Enter the following command in the RPI terminal 225 225 226 -ap tupdate411 +== 3.8 Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. == 227 227 228 -[[image:image-20220602143155-1.png]] 229 229 230 -apt install minicom 231 231 232 - [[image:image-20220602143744-2.png]]415 +== 3.9 Upgrade Firmware of LA66 USB LoRaWAN Adapter == 233 233 234 -=== Send PC's CPU/RAM usage to TTN via script. === 235 235 236 -==== Take python as an example: ==== 237 237 238 -===== Preconditions: ===== 239 239 240 - 1.LA66USB LoRaWAN Adapterworksfine420 += 4. Order Info = 241 241 242 -2.LA66 USB LoRaWAN Adapter is registered with TTN 243 243 244 -== ===Stepsforusage====423 +**Part Number:** (% style="color:blue" %)**LA66-XXX**(%%), (% style="color:blue" %)**LA66-LoRaWAN-Shield-XXX** (%%) **or** (% style="color:blue" %)**LA66-USB-LoRaWAN-Adapter-XXX** 245 245 246 -1.Press the reset switch RESET on the LA66 USB LoRaWAN Adapter 247 247 248 - 2.RunthescriptandseetheTTN426 +(% style="color:blue" %)**XXX**(%%): The default frequency band 249 249 250 -[[image:image-20220602115852-3.png]] 428 +* (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band 429 +* (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band 430 +* (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band 431 +* (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band 432 +* (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band 433 +* (% style="color:red" %)**US915**(%%): LoRaWAN US915 band 434 +* (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band 435 +* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band 436 +* (% style="color:red" %)**PP**(%%): Peer to Peer LoRa Protocol 251 251 252 252 253 253 254 -== Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. == 255 255 441 += 5. Reference = 256 256 257 - ==Upgrade Firmwareof LA66 USB LoRaWAN Adapter ==443 +* Hardware Design File for LA66 LoRaWAN Shield, LA66 USB LoRaWAN Adapter : [[Download>>https://www.dropbox.com/sh/a3wbmdcvqjxaqw5/AADZfvAiykJTK624RgMquH86a?dl=0]] 258 258 259 259