<
From version < 87.9 >
edited by Xiaoling
on 2022/07/13 10:02
To version < 65.1 >
edited by Edwin Chen
on 2022/07/02 23:30
>
Change comment: There is no comment for this version

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1 -XWiki.Xiaoling
1 +XWiki.Edwin
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1 -
2 -
1 +{{box cssClass="floatinginfobox" title="**Contents**"}}
3 3  {{toc/}}
3 +{{/box}}
4 4  
5 += LA66 LoRaWAN Module =
5 5  
7 +== What is LA66 LoRaWAN Module ==
6 6  
7 -= 1.  LA66 LoRaWAN Module =
8 -
9 -
10 -== 1.1  What is LA66 LoRaWAN Module ==
11 -
12 -
13 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.
14 14  
15 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.
... ... @@ -20,428 +20,249 @@
20 20  
21 21  LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
22 22  
19 +== Features ==
23 23  
24 -== 1.2  Features ==
25 25  
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
22 +== Specification ==
35 35  
36 -
37 -
38 -== 1.3  Specification ==
39 -
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
57 -
58 -
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  
26 +Input Power Range: 1.8v ~~ 3.7v
69 69  
28 +Power Consumption: < 4uA.
70 70  
71 -== 1.6  Pin Mapping ==
30 +Frequency Range: 150 MHz ~~ 960 MHz
72 72  
32 +Maximum Power +22 dBm constant RF output
73 73  
74 -[[image:image-20220523101537-1.png]]
34 +High sensitivity: -148 dBm
75 75  
36 +Temperature:
76 76  
38 +* Storage: -55 ~~ +125℃
39 +* Operating: -40 ~~ +85℃
77 77  
78 -== 1.7  Land Pattern ==
41 +Humidity:
79 79  
80 -[[image:image-20220517072821-2.png]]
43 +* Storage: 5 ~~ 95% (Non-Condensing)
44 +* Operating: 10 ~~ 95% (Non-Condensing)
81 81  
46 +LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
82 82  
48 +LoRa Rx current: <9 mA
83 83  
84 -= 2.  LA66 LoRaWAN Shield =
50 +I/O Voltage: 3.3v
85 85  
86 86  
87 -== 2.1  Overview ==
53 +== AT Command ==
88 88  
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.
55 +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 -== 2.2  Features ==
58 +== 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
60 +[[image:image-20220523101537-1.png]]
104 104  
62 +== Land Pattern ==
105 105  
64 +[[image:image-20220517072821-2.png]]
106 106  
107 -== 2.3  Specification ==
108 108  
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
67 +== Part Number ==
126 126  
69 +Part Number: **LA66-XXX**
127 127  
71 +**XX**: The default frequency band
128 128  
129 -== 2.4  Pin Mapping & LED ==
73 +* **AS923**: LoRaWAN AS923 band
74 +* **AU915**: LoRaWAN AU915 band
75 +* **EU433**: LoRaWAN EU433 band
76 +* **EU868**: LoRaWAN EU868 band
77 +* **KR920**: LoRaWAN KR920 band
78 +* **US915**: LoRaWAN US915 band
79 +* **IN865**: LoRaWAN IN865 band
80 +* **CN470**: LoRaWAN CN470 band
130 130  
82 += LA66 LoRaWAN Shield =
131 131  
84 +LA66 LoRaWAN Shield is the Arduino Breakout PCB to fast test the features of LA66 module and turn Arduino to support LoRaWAN.
132 132  
133 -== 2.5  Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
86 +== Pin Mapping & LED ==
134 134  
88 +== Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
135 135  
90 +== Example: Join TTN network and send an uplink message, get downlink message. ==
136 136  
137 -== 2.6  Example: Join TTN network and send an uplink message, get downlink message. ==
92 +== Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
138 138  
94 +== Upgrade Firmware of LA66 LoRaWAN Shield ==
139 139  
96 +=== what needs to be used ===
140 140  
141 -== 2. Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
98 +1.LA66 LoRaWAN Shield that needs to be upgraded
142 142  
100 +2.Arduino
143 143  
102 +3.USB TO TTL
144 144  
145 -== 2.8  Upgrade Firmware of LA66 LoRaWAN Shield ==
104 +[[image:image-20220602100052-2.png]]
146 146  
106 +=== Wiring Schematic ===
147 147  
148 -=== 2.8.1  Items needed for update ===
108 +[[image:image-20220602101311-3.png]]
149 149  
150 -1. LA66 LoRaWAN Shield
151 -1. Arduino
152 -1. USB TO TTL Adapter
110 +LA66 LoRaWAN Shield  >>>>>>>>>>>>USB TTL
153 153  
154 -[[image:image-20220602100052-2.png||height="385" width="600"]]
112 +GND  >>>>>>>>>>>>GND
155 155  
114 +TXD  >>>>>>>>>>>>TXD
156 156  
157 -=== 2.8.2  Connection ===
116 +RXD  >>>>>>>>>>>>RXD
158 158  
118 +JP6 of LA66 LoRaWAN Shield needs to be connected with yellow jumper cap
159 159  
160 -[[image:image-20220602101311-3.png||height="276" width="600"]]
120 +Connect to the PC after connecting the wires
161 161  
122 +[[image:image-20220602102240-4.png]]
162 162  
163 -(% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  **<->** (% style="color:blue" %)**USB TTL**
124 +=== Upgrade steps ===
164 164  
165 -(% style="background-color:yellow" %)**GND  <-> GND
166 -TXD  <->  TXD
167 -RXD  <->  RXD**
126 +==== Dial the SW1 of the LA66 LoRaWAN Shield to the ISP's location as shown in the figure below ====
168 168  
128 +[[image:image-20220602102824-5.png]]
169 169  
170 -Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module)
130 +==== Press the RST switch on the LA66 LoRaWAN Shield once ====
171 171  
172 -Connect USB TTL Adapter to PC after connecting the wires
132 +[[image:image-20220602104701-12.png]]
173 173  
134 +==== Open the upgrade application software ====
174 174  
175 -[[image:image-20220602102240-4.png||height="304" width="600"]]
136 +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/]]
176 176  
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 -
188 -==== 2.  Press the RST switch once ====
189 -
190 -[[image:image-20220602104701-12.png||height="285" width="600"]]
191 -
192 -
193 -
194 -==== 3.  Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ====
195 -
196 -
197 -(% 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/]]**
198 -
199 -
200 200  [[image:image-20220602103227-6.png]]
201 201  
202 -
203 203  [[image:image-20220602103357-7.png]]
204 204  
142 +===== Select the COM port corresponding to USB TTL =====
205 205  
206 -
207 -(% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %)
208 -(% style="color:blue" %)**2. Select the COM port corresponding to USB TTL**
209 -
210 -
211 211  [[image:image-20220602103844-8.png]]
212 212  
146 +===== Select the bin file to burn =====
213 213  
214 -
215 -(% class="wikigeneratedid" id="HSelectthebinfiletoburn" %)
216 -(% style="color:blue" %)**3. Select the bin file to burn**
217 -
218 -
219 219  [[image:image-20220602104144-9.png]]
220 220  
221 -
222 222  [[image:image-20220602104251-10.png]]
223 223  
224 -
225 225  [[image:image-20220602104402-11.png]]
226 226  
154 +===== Click to start the download =====
227 227  
228 -
229 -(% class="wikigeneratedid" id="HClicktostartthedownload" %)
230 -(% style="color:blue" %)**4. Click to start the download**
231 -
232 232  [[image:image-20220602104923-13.png]]
233 233  
158 +===== The following figure appears to prove that the burning is in progress =====
234 234  
235 -(% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %)
236 -(% style="color:blue" %)**5. Check update process**
237 -
238 -
239 239  [[image:image-20220602104948-14.png]]
240 240  
162 +===== The following picture appears to prove that the burning is successful =====
241 241  
242 -
243 -(% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %)
244 -(% style="color:blue" %)**The following picture shows that the burning is successful**
245 -
246 246  [[image:image-20220602105251-15.png]]
247 247  
166 += LA66 USB LoRaWAN Adapter =
248 248  
168 +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.
249 249  
250 -= 3.  LA66 USB LoRaWAN Adapter =
170 +Before use, please make sure that the computer has installed the CP2102 driver
251 251  
172 +== Pin Mapping & LED ==
252 252  
253 -== 3.1  Overview ==
174 +== Example Send & Get Messages via LoRaWAN in PC ==
254 254  
255 -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.
176 +Connect the LA66 LoRa Shield to the PC
256 256  
178 +[[image:image-20220602171217-1.png||height="615" width="915"]]
257 257  
258 -== 3.2  Features ==
259 -
260 -* LoRaWAN USB adapter base on LA66 LoRaWAN module
261 -* Ultra-long RF range
262 -* Support LoRaWAN v1.0.4 protocol
263 -* Support peer-to-peer protocol
264 -* TCXO crystal to ensure RF performance on low temperature
265 -* Spring RF antenna
266 -* Available in different frequency LoRaWAN frequency bands.
267 -* World-wide unique OTAA keys.
268 -* AT Command via UART-TTL interface
269 -* Firmware upgradable via UART interface
270 -
271 -== 3.3  Specification ==
272 -
273 -* CPU: 32-bit 48 MHz
274 -* Flash: 256KB
275 -* RAM: 64KB
276 -* Input Power Range: 5v
277 -* Frequency Range: 150 MHz ~~ 960 MHz
278 -* Maximum Power +22 dBm constant RF output
279 -* High sensitivity: -148 dBm
280 -* Temperature:
281 -** Storage: -55 ~~ +125℃
282 -** Operating: -40 ~~ +85℃
283 -* Humidity:
284 -** Storage: 5 ~~ 95% (Non-Condensing)
285 -** Operating: 10 ~~ 95% (Non-Condensing)
286 -* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
287 -* LoRa Rx current: <9 mA
288 -
289 -== 3.4  Pin Mapping & LED ==
290 -
291 -
292 -
293 -== 3.5  Example: Send & Get Messages via LoRaWAN in PC ==
294 -
295 -
296 -Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
297 -
298 -
299 -(% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN adapter to PC**
300 -
301 -
302 -[[image:image-20220602171217-1.png||height="538" width="800"]]
303 -
304 -
305 305  Open the serial port tool
306 306  
307 307  [[image:image-20220602161617-8.png]]
308 308  
309 -[[image:image-20220602161718-9.png||height="457" width="800"]]
184 +[[image:image-20220602161718-9.png||height="529" width="927"]]
310 310  
186 +Press the reset switch RST on the LA66 LoRa Shield.
311 311  
188 +The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
312 312  
313 -(% style="color:blue" %)**2. Press the reset switch RST on the LA66 USB LoRaWAN Adapter to reset it.**
190 +[[image:image-20220602161935-10.png]]
314 314  
315 -The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully Join the LoRaWAN network
192 +send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
316 316  
317 -
318 -[[image:image-20220602161935-10.png||height="498" width="800"]]
319 -
320 -
321 -
322 -(% style="color:blue" %)**3. See Uplink Command**
323 -
324 -Command format: (% style="color:#4472c4" %)** AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
325 -
326 326  example: AT+SENDB=01,02,8,05820802581ea0a5
327 327  
328 -[[image:image-20220602162157-11.png||height="497" width="800"]]
196 +[[image:image-20220602162157-11.png]]
329 329  
198 +Check to see if TTN received the message
330 330  
200 +[[image:image-20220602162331-12.png||height="547" width="1044"]]
331 331  
332 -(% style="color:blue" %)**4. Check to see if TTN received the message**
202 +== Example Send & Get Messages via LoRaWAN in RPi ==
333 333  
334 -[[image:image-20220602162331-12.png||height="420" width="800"]]
204 +Connect the LA66 LoRa Shield to the RPI
335 335  
206 +[[image:image-20220602171233-2.png||height="592" width="881"]]
336 336  
208 +Log in to the RPI's terminal and connect to the serial port
337 337  
338 -== 3.6  Example: Send PC's CPU/RAM usage to TTN via python ==
210 +[[image:image-20220602153146-3.png]]
339 339  
212 +Press the reset switch RST on the LA66 LoRa Shield.
213 +The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
340 340  
341 -**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]]
215 +[[image:image-20220602154928-5.png]]
342 342  
217 +send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
343 343  
344 -(% style="color:red" %)**Preconditions:**
345 -
346 -(% style="color:red" %)**1. LA66 USB LoRaWAN Adapter works fine**
347 -
348 -(% style="color:red" %)**2. LA66 USB LoRaWAN Adapter  is registered with TTN**
349 -
350 -
351 -
352 -(% style="color:blue" %)**Steps for usage:**
353 -
354 -(% style="color:blue" %)**1.**(%%) Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
355 -
356 -(% style="color:blue" %)**2.**(%%) Run the python script in PC and see the TTN
357 -
358 -[[image:image-20220602115852-3.png||height="450" width="1187"]]
359 -
360 -
361 -
362 -== 3.7  Example: Send & Get Messages via LoRaWAN in RPi ==
363 -
364 -
365 -Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
366 -
367 -
368 -(% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN Adapter to the Raspberry Pi**
369 -
370 -[[image:image-20220602171233-2.png||height="538" width="800"]]
371 -
372 -
373 -
374 -(% style="color:blue" %)**2. Install Minicom in RPi.**
375 -
376 -(% id="cke_bm_509388S" style="display:none" %) (%%)Enter the following command in the RPi terminal
377 -
378 - (% style="background-color:yellow" %)**apt update**
379 -
380 - (% style="background-color:yellow" %)**apt install minicom**
381 -
382 -
383 -Use minicom to connect to the RPI's terminal
384 -
385 -[[image:image-20220602153146-3.png||height="439" width="500"]]
386 -
387 -
388 -
389 -(% style="color:blue" %)**3. Press the reset switch RST on the LA66 USB LoRaWAN Adapter.**(%%)
390 -(% style="color:blue" %)The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully entered the network
391 -
392 -[[image:image-20220602154928-5.png||height="436" width="500"]]
393 -
394 -
395 -
396 -(% style="color:blue" %)**4. Send Uplink message**
397 -
398 -Format: (% style="color:#4472c4" %)**AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
399 -
400 400  example: AT+SENDB=01,02,8,05820802581ea0a5
401 401  
221 +[[image:image-20220602160339-6.png]]
402 402  
403 -[[image:image-20220602160339-6.png||height="517" width="600"]]
404 -
405 -
406 -
407 407  Check to see if TTN received the message
408 408  
409 -[[image:image-20220602160627-7.png||height="369" width="800"]]
225 +[[image:image-20220602160627-7.png||height="468" width="1013"]]
410 410  
227 +=== Install Minicom ===
411 411  
229 +Enter the following command in the RPI terminal
412 412  
413 -== 3.8  Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
231 +apt update
414 414  
233 +[[image:image-20220602143155-1.png]]
415 415  
235 +apt install minicom
416 416  
417 -== 3.9  Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
237 +[[image:image-20220602143744-2.png]]
418 418  
239 +=== Send PC's CPU/RAM usage to TTN via script. ===
419 419  
241 +==== Take python as an example: ====
420 420  
243 +===== Preconditions: =====
421 421  
422 -= 4.  Order Info =
245 +1.LA66 USB LoRaWAN Adapter works fine
423 423  
247 +2.LA66 USB LoRaWAN Adapter  is registered with TTN
424 424  
425 -**Part Number:**  (% style="color:blue" %)**LA66-XXX**(%%), (% style="color:blue" %)**LA66-LoRaWAN-Shield-XXX** (%%) **or**  (% style="color:blue" %)**LA66-USB-LoRaWAN-Adapter-XXX**
249 +===== Steps for usage =====
426 426  
251 +1.Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
427 427  
428 -(% style="color:blue" %)**XXX**(%%): The default frequency band
253 +2.Run the script and see the TTN
429 429  
430 -* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
431 -* (% style="color:red" %)**AU915**(%%):  LoRaWAN AU915 band
432 -* (% style="color:red" %)**EU433**(%%):  LoRaWAN EU433 band
433 -* (% style="color:red" %)**EU868**(%%):  LoRaWAN EU868 band
434 -* (% style="color:red" %)**KR920**(%%):  LoRaWAN KR920 band
435 -* (% style="color:red" %)**US915**(%%):  LoRaWAN US915 band
436 -* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
437 -* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
438 -* (% style="color:red" %)**PP**(%%):  Peer to Peer LoRa Protocol
255 +[[image:image-20220602115852-3.png]]
439 439  
440 440  
441 441  
259 +== Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
442 442  
443 -= 5.  Reference =
444 444  
445 -* Hardware Design File for LA66 LoRaWAN Shield, LA66 USB LoRaWAN Adapter : [[Download>>https://www.dropbox.com/sh/a3wbmdcvqjxaqw5/AADZfvAiykJTK624RgMquH86a?dl=0]]
262 +== Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
446 446  
447 447  
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