Last modified by Xiaoling on 2023/05/26 14:19
<
From version < 55.1 >
edited by Herong Lu
on 2022/06/02 16:19
To version < 87.14 >
edited by Xiaoling
on 2022/07/13 10:06
>
Change comment: There is no comment for this version

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1 -XWiki.Lu
1 +XWiki.Xiaoling
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1 -{{box cssClass="floatinginfobox" title="**Contents**"}}
2 -{{toc/}}
3 -{{/box}}
1 +
4 4  
5 -= LA66 LoRaWAN Module =
3 +**Table of Contents:**
6 6  
7 -== What is LA66 LoRaWAN Module ==
5 +{{toc/}}
8 8  
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 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.
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 -**Each LA66 **module includes a world unique OTAA key for LoRaWAN registration.
9 += 1.  LA66 LoRaWAN Module =
14 14  
15 15  
12 +== 1.1  What is LA66 LoRaWAN Module ==
16 16  
17 -== Specification ==
18 18  
19 -[[image:image-20220517072526-1.png]]
15 +(% 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.
20 20  
21 -Input Power Range: 1.8v ~~ 3.7v
17 +(% 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.
22 22  
23 -Power Consumption: < 4uA.
19 +Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
24 24  
25 -Frequency Range: 150 MHz ~~ 960 MHz
21 +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.
26 26  
27 -Maximum Power +22 dBm constant RF output
23 +LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
28 28  
29 -High sensitivity: -148 dBm
30 30  
31 -Temperature:
26 +== 1.2  Features ==
32 32  
33 -* Storage: -55 ~~ +125℃
34 -* Operating: -40 ~~ +85℃
28 +* Support LoRaWAN v1.0.4 protocol
29 +* Support peer-to-peer protocol
30 +* TCXO crystal to ensure RF performance on low temperature
31 +* SMD Antenna pad and i-pex antenna connector
32 +* Available in different frequency LoRaWAN frequency bands.
33 +* World-wide unique OTAA keys.
34 +* AT Command via UART-TTL interface
35 +* Firmware upgradable via UART interface
36 +* Ultra-long RF range
35 35  
36 -Humidity:
37 37  
38 -* Storage: 5 ~~ 95% (Non-Condensing)
39 -* Operating: 10 ~~ 95% (Non-Condensing)
40 40  
41 -LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
40 +== 1.3  Specification ==
42 42  
43 -LoRa Rx current: <9 mA
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
44 44  
45 -I/O Voltage: 3.3v
46 46  
47 47  
48 -== AT Command ==
62 +== 1.4  AT Command ==
49 49  
50 50  AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents.
51 51  
52 52  
53 -== Pin Mapping ==
67 +== 1.5  Dimension ==
54 54  
69 +[[image:image-20220517072526-1.png]]
70 +
71 +
72 +
73 +== 1.6  Pin Mapping ==
74 +
75 +
55 55  [[image:image-20220523101537-1.png]]
56 56  
57 -== Land Pattern ==
58 58  
79 +
80 +== 1.7  Land Pattern ==
81 +
59 59  [[image:image-20220517072821-2.png]]
60 60  
61 61  
62 -== Part Number ==
63 63  
64 -Part Number: **LA66-XXX**
86 += 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
89 +== 2.1  Overview ==
76 76  
77 -= LA66 LoRaWAN Shield =
91 +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 -== Pin Mapping & LED ==
94 +== 2.2  Features ==
82 82  
83 -== Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
96 +* Arduino Shield base on LA66 LoRaWAN module
97 +* Support LoRaWAN v1.0.4 protocol
98 +* Support peer-to-peer protocol
99 +* TCXO crystal to ensure RF performance on low temperature
100 +* SMA connector
101 +* Available in different frequency LoRaWAN frequency bands.
102 +* World-wide unique OTAA keys.
103 +* AT Command via UART-TTL interface
104 +* Firmware upgradable via UART interface
105 +* 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 -== Upgrade Firmware of LA66 LoRaWAN Shield ==
109 +== 2.3  Specification ==
90 90  
91 -=== what needs to be used ===
111 +* CPU: 32-bit 48 MHz
112 +* Flash: 256KB
113 +* RAM: 64KB
114 +* Input Power Range: 1.8v ~~ 3.7v
115 +* Power Consumption: < 4uA.
116 +* Frequency Range: 150 MHz ~~ 960 MHz
117 +* Maximum Power +22 dBm constant RF output
118 +* High sensitivity: -148 dBm
119 +* Temperature:
120 +** Storage: -55 ~~ +125℃
121 +** Operating: -40 ~~ +85℃
122 +* Humidity:
123 +** Storage: 5 ~~ 95% (Non-Condensing)
124 +** Operating: 10 ~~ 95% (Non-Condensing)
125 +* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
126 +* LoRa Rx current: <9 mA
127 +* 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.USB TO TTL
131 +== 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]]
135 +== 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  >>>>>>>>>>>>TXD
139 +== 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 -Connect to the PC after connecting the wires
143 +== 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 -==== Dial the SW1 of the LA66 LoRaWAN Shield to the ISP's location as shown in the figure below ====
147 +== 2.8  Upgrade Firmware of LA66 LoRaWAN Shield ==
122 122  
123 -[[image:image-20220602102824-5.png]]
124 124  
125 -==== Press the RST switch on the LA66 LoRaWAN Shield once ====
150 +=== 2.8.1  Items needed for update ===
126 126  
127 -[[image:image-20220602104701-12.png]]
152 +1. LA66 LoRaWAN Shield
153 +1. Arduino
154 +1. USB TO TTL Adapter
128 128  
129 -==== Open the upgrade application software ====
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  
158 +
159 +[[image:image-20220602100052-2.png||height="385" width="600"]]
160 +
161 +
162 +=== 2.8.2  Connection ===
163 +
164 +
165 +[[image:image-20220602101311-3.png||height="276" width="600"]]
166 +
167 +
168 +(% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  **<->** (% style="color:blue" %)**USB TTL**
169 +
170 +(% style="background-color:yellow" %)**GND  <-> GND
171 +TXD  <->  TXD
172 +RXD  <->  RXD**
173 +
174 +
175 +Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module)
176 +
177 +Connect USB TTL Adapter to PC after connecting the wires
178 +
179 +
180 +[[image:image-20220602102240-4.png||height="304" width="600"]]
181 +
182 +
183 +=== 2.8.3  Upgrade steps ===
184 +
185 +
186 +==== 1.  Switch SW1 to put in ISP position ====
187 +
188 +
189 +[[image:image-20220602102824-5.png||height="306" width="600"]]
190 +
191 +
192 +
193 +==== 2.  Press the RST switch once ====
194 +
195 +
196 +[[image:image-20220602104701-12.png||height="285" width="600"]]
197 +
198 +
199 +
200 +==== 3.  Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ====
201 +
202 +
203 +(% 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/]]**
204 +
205 +
133 133  [[image:image-20220602103227-6.png]]
134 134  
208 +
135 135  [[image:image-20220602103357-7.png]]
136 136  
137 -===== Select the COM port corresponding to USB TTL =====
138 138  
212 +
213 +(% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %)
214 +(% style="color:blue" %)**2. Select the COM port corresponding to USB TTL**
215 +
216 +
139 139  [[image:image-20220602103844-8.png]]
140 140  
141 -===== Select the bin file to burn =====
142 142  
220 +
221 +(% class="wikigeneratedid" id="HSelectthebinfiletoburn" %)
222 +(% style="color:blue" %)**3. Select the bin file to burn**
223 +
224 +
143 143  [[image:image-20220602104144-9.png]]
144 144  
227 +
145 145  [[image:image-20220602104251-10.png]]
146 146  
230 +
147 147  [[image:image-20220602104402-11.png]]
148 148  
149 -===== Click to start the download =====
150 150  
234 +
235 +(% class="wikigeneratedid" id="HClicktostartthedownload" %)
236 +(% style="color:blue" %)**4. Click to start the download**
237 +
151 151  [[image:image-20220602104923-13.png]]
152 152  
153 -===== The following figure appears to prove that the burning is in progress =====
154 154  
241 +
242 +(% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %)
243 +(% style="color:blue" %)**5. Check update process**
244 +
245 +
155 155  [[image:image-20220602104948-14.png]]
156 156  
157 -===== The following picture appears to prove that the burning is successful =====
158 158  
249 +
250 +(% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %)
251 +(% style="color:blue" %)**The following picture shows that the burning is successful**
252 +
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 -Before use, please make sure that the computer has installed the CP2102 driver
257 += 3.  LA66 USB LoRaWAN Adapter =
166 166  
167 -== Pin Mapping & LED ==
168 168  
169 -== Example Send & Get Messages via LoRaWAN in PC ==
260 +== 3.1  Overview ==
170 170  
171 -== Example Send & Get Messages via LoRaWAN in RPi ==
262 +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 -Connect the LA66 LoRa Shield to the RPI
174 174  
175 -[[image:image-20220602153333-4.png]]
265 +== 3.2  Features ==
176 176  
177 -Log in to the RPI's terminal and connect to the serial port
267 +* LoRaWAN USB adapter base on LA66 LoRaWAN module
268 +* Ultra-long RF range
269 +* Support LoRaWAN v1.0.4 protocol
270 +* Support peer-to-peer protocol
271 +* TCXO crystal to ensure RF performance on low temperature
272 +* Spring RF antenna
273 +* Available in different frequency LoRaWAN frequency bands.
274 +* World-wide unique OTAA keys.
275 +* AT Command via UART-TTL interface
276 +* Firmware upgradable via UART interface
178 178  
179 -[[image:image-20220602153146-3.png]]
180 180  
181 -Press the reset switch RST on the LA66 LoRa Shield.
182 -The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
183 183  
184 -[[image:image-20220602154928-5.png]]
280 +== 3.3  Specification ==
185 185  
186 -send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
282 +* CPU: 32-bit 48 MHz
283 +* Flash: 256KB
284 +* RAM: 64KB
285 +* Input Power Range: 5v
286 +* Frequency Range: 150 MHz ~~ 960 MHz
287 +* Maximum Power +22 dBm constant RF output
288 +* High sensitivity: -148 dBm
289 +* Temperature:
290 +** Storage: -55 ~~ +125℃
291 +** Operating: -40 ~~ +85℃
292 +* Humidity:
293 +** Storage: 5 ~~ 95% (Non-Condensing)
294 +** Operating: 10 ~~ 95% (Non-Condensing)
295 +* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
296 +* LoRa Rx current: <9 mA
187 187  
298 +
299 +
300 +== 3.4  Pin Mapping & LED ==
301 +
302 +
303 +
304 +== 3.5  Example: Send & Get Messages via LoRaWAN in PC ==
305 +
306 +
307 +Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
308 +
309 +
310 +(% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN adapter to PC**
311 +
312 +
313 +[[image:image-20220602171217-1.png||height="538" width="800"]]
314 +
315 +
316 +Open the serial port tool
317 +
318 +[[image:image-20220602161617-8.png]]
319 +
320 +[[image:image-20220602161718-9.png||height="457" width="800"]]
321 +
322 +
323 +
324 +(% style="color:blue" %)**2. Press the reset switch RST on the LA66 USB LoRaWAN Adapter to reset it.**
325 +
326 +The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully Join the LoRaWAN network
327 +
328 +
329 +[[image:image-20220602161935-10.png||height="498" width="800"]]
330 +
331 +
332 +
333 +(% style="color:blue" %)**3. See Uplink Command**
334 +
335 +Command format: (% style="color:#4472c4" %)** AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
336 +
188 188  example: AT+SENDB=01,02,8,05820802581ea0a5
189 189  
190 -[[image:image-20220602160339-6.png]]
339 +[[image:image-20220602162157-11.png||height="497" width="800"]]
191 191  
192 -Check to see if TTN received the message
193 193  
194 -[[image:image-20220602160627-7.png||height="468" width="1013"]]
195 195  
196 -=== Install Minicom ===
343 +(% style="color:blue" %)**4. Check to see if TTN received the message**
197 197  
198 -Enter the following command in the RPI terminal
345 +[[image:image-20220602162331-12.png||height="420" width="800"]]
199 199  
200 -apt update
201 201  
202 -[[image:image-20220602143155-1.png]]
203 203  
204 -apt install minicom
349 +== 3.6  Example: Send PC's CPU/RAM usage to TTN via python ==
205 205  
206 -[[image:image-20220602143744-2.png]]
207 207  
208 -=== Use AT Command to send an uplink message. ===
352 +**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]]
209 209  
210 -=== Send PC's CPU/RAM usage to TTN via script. ===
211 211  
212 -==== Take python as an example： ====
355 +(% style="color:red" %)**Preconditions:**
213 213  
214 -===== Preconditions: =====
357 +(% style="color:red" %)**1. LA66 USB LoRaWAN Adapter works fine**
215 215  
216 -1.LA66 LoRa Shield works fine
359 +(% style="color:red" %)**2. LA66 USB LoRaWAN Adapter  is registered with TTN**
217 217  
218 -2.LA66 LoRa Shield is registered with TTN
219 219  
220 -===== Steps for usage =====
221 221  
222 -1.After connecting the line, connect it to the PC, turn SW1 to FLASH, and press the RST switch. As shown in the figure below
363 +(% style="color:blue" %)**Steps for usage:**
223 223  
224 -[[image:image-20220602114148-1.png]]
365 +(% style="color:blue" %)**1.**(%%) Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
225 225  
226 -2.Run the script and see the TTN
367 +(% style="color:blue" %)**2.**(%%) Run the python script in PC and see the TTN
227 227  
228 -[[image:image-20220602115852-3.png]]
369 +[[image:image-20220602115852-3.png||height="450" width="1187"]]
229 229  
230 230  
231 231  
232 -== Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
373 +== 3.7  Example: Send & Get Messages via LoRaWAN in RPi ==
233 233  
234 234  
235 -== Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
376 +Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
377 +
378 +
379 +(% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN Adapter to the Raspberry Pi**
380 +
381 +[[image:image-20220602171233-2.png||height="538" width="800"]]
382 +
383 +
384 +
385 +(% style="color:blue" %)**2. Install Minicom in RPi.**
386 +
387 +(% id="cke_bm_509388S" style="display:none" %) (%%)Enter the following command in the RPi terminal
388 +
389 + (% style="background-color:yellow" %)**apt update**
390 +
391 + (% style="background-color:yellow" %)**apt install minicom**
392 +
393 +
394 +Use minicom to connect to the RPI's terminal
395 +
396 +[[image:image-20220602153146-3.png||height="439" width="500"]]
397 +
398 +
399 +
400 +(% style="color:blue" %)**3. Press the reset switch RST on the LA66 USB LoRaWAN Adapter.**
401 +
402 +The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully entered the network.
403 +
404 +
405 +[[image:image-20220602154928-5.png||height="436" width="500"]]
406 +
407 +
408 +
409 +(% style="color:blue" %)**4. Send Uplink message**
410 +
411 +Format: (% style="color:#4472c4" %)**AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
412 +
413 +example: AT+SENDB=01,02,8,05820802581ea0a5
414 +
415 +
416 +[[image:image-20220602160339-6.png||height="517" width="600"]]
417 +
418 +
419 +
420 +Check to see if TTN received the message
421 +
422 +[[image:image-20220602160627-7.png||height="369" width="800"]]
423 +
424 +
425 +
426 +== 3.8  Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
427 +
428 +
429 +
430 +== 3.9  Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
431 +
432 +
433 +
434 +
435 += 4.  Order Info =
436 +
437 +
438 +**Part Number:**  (% style="color:blue" %)**LA66-XXX**(%%), (% style="color:blue" %)**LA66-LoRaWAN-Shield-XXX** (%%) **or**  (% style="color:blue" %)**LA66-USB-LoRaWAN-Adapter-XXX**
439 +
440 +
441 +(% style="color:blue" %)**XXX**(%%): The default frequency band
442 +
443 +* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
444 +* (% style="color:red" %)**AU915**(%%):  LoRaWAN AU915 band
445 +* (% style="color:red" %)**EU433**(%%):  LoRaWAN EU433 band
446 +* (% style="color:red" %)**EU868**(%%):  LoRaWAN EU868 band
447 +* (% style="color:red" %)**KR920**(%%):  LoRaWAN KR920 band
448 +* (% style="color:red" %)**US915**(%%):  LoRaWAN US915 band
449 +* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
450 +* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
451 +* (% style="color:red" %)**PP**(%%):  Peer to Peer LoRa Protocol
452 +
453 +
454 +
455 += 5.  Reference =
456 +
457 +* Hardware Design File for LA66 LoRaWAN Shield, LA66 USB LoRaWAN Adapter : [[Download>>https://www.dropbox.com/sh/a3wbmdcvqjxaqw5/AADZfvAiykJTK624RgMquH86a?dl=0]]
458 +
459 +
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