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 < 87.13 >
edited by Xiaoling
on 2022/07/13 10:05
>
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**"}}
1 +
2 +
3 +**Table of Contents:**
4 +
2 2  {{toc/}}
3 -{{/box}}
4 4  
5 -= LA66 LoRaWAN Module =
6 6  
7 -== What is LA66 LoRaWAN Module ==
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.
9 += 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 -**Each LA66 **module includes a world unique OTAA key for LoRaWAN registration.
12 +== 1.1  What is LA66 LoRaWAN Module ==
14 14  
15 15  
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.
16 16  
17 -== Specification ==
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.
18 18  
19 -[[image:image-20220517072526-1.png]]
19 +Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
20 20  
21 -Input Power Range: 1.8v ~~ 3.7v
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.
22 22  
23 -Power Consumption: < 4uA.
23 +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 -Maximum Power +22 dBm constant RF output
26 +== 1.2  Features ==
28 28  
29 -High sensitivity: -148 dBm
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
30 30  
31 -Temperature:
32 32  
33 -* Storage: -55 ~~ +125℃
34 -* Operating: -40 ~~ +85℃
39 +== 1.3  Specification ==
35 35  
36 -Humidity:
41 +* CPU: 32-bit 48 MHz
42 +* Flash: 256KB
43 +* RAM: 64KB
44 +* Input Power Range: 1.8v ~~ 3.7v
45 +* Power Consumption: < 4uA.
46 +* Frequency Range: 150 MHz ~~ 960 MHz
47 +* Maximum Power +22 dBm constant RF output
48 +* High sensitivity: -148 dBm
49 +* Temperature:
50 +** Storage: -55 ~~ +125℃
51 +** Operating: -40 ~~ +85℃
52 +* Humidity:
53 +** Storage: 5 ~~ 95% (Non-Condensing)
54 +** Operating: 10 ~~ 95% (Non-Condensing)
55 +* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
56 +* LoRa Rx current: <9 mA
57 +* I/O Voltage: 3.3v
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
60 +== 1.4  AT Command ==
42 42  
43 -LoRa Rx current: <9 mA
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.
44 44  
45 -I/O Voltage: 3.3v
46 46  
65 +== 1.5  Dimension ==
47 47  
48 -== AT Command ==
67 +[[image:image-20220517072526-1.png]]
49 49  
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 ==
71 +== 1.6  Pin Mapping ==
54 54  
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 -Part Number: **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 -== Pin Mapping & 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. ==
106 +== 2.3  Specification ==
88 88  
89 -== Upgrade Firmware of LA66 LoRaWAN Shield ==
108 +* CPU: 32-bit 48 MHz
109 +* Flash: 256KB
110 +* RAM: 64KB
111 +* Input Power Range: 1.8v ~~ 3.7v
112 +* Power Consumption: < 4uA.
113 +* Frequency Range: 150 MHz ~~ 960 MHz
114 +* Maximum Power +22 dBm constant RF output
115 +* High sensitivity: -148 dBm
116 +* Temperature:
117 +** Storage: -55 ~~ +125℃
118 +** Operating: -40 ~~ +85℃
119 +* Humidity:
120 +** Storage: 5 ~~ 95% (Non-Condensing)
121 +** Operating: 10 ~~ 95% (Non-Condensing)
122 +* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
123 +* LoRa Rx current: <9 mA
124 +* I/O Voltage: 3.3v
90 90  
91 -=== what needs to be used ===
92 92  
93 -1.LA66 LoRaWAN Shield that needs to be upgraded
127 +== 2.4  Pin Mapping & LED ==
94 94  
95 -2.Arduino
96 96  
97 -3.USB TO TTL
98 98  
99 -[[image:image-20220602100052-2.png]]
131 +== 2.5  Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
100 100  
101 -=== Wiring Schematic ===
102 102  
103 -[[image:image-20220602101311-3.png]]
104 104  
105 -LA66 LoRaWAN Shield  >>>>>>>>>>>>USB TTL
135 +== 2.6  Example: Join TTN network and send an uplink message, get downlink message. ==
106 106  
107 -GND  >>>>>>>>>>>>GND
108 108  
109 -TXD  >>>>>>>>>>>>TXD
110 110  
111 -RXD  >>>>>>>>>>>>RXD
139 +== 2.7  Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
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
116 116  
117 -[[image:image-20220602102240-4.png]]
143 +== 2.8  Upgrade Firmware of LA66 LoRaWAN Shield ==
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 ====
146 +=== 2.8.1  Items needed for update ===
122 122  
123 -[[image:image-20220602102824-5.png]]
148 +1. LA66 LoRaWAN Shield
149 +1. Arduino
150 +1. USB TO TTL Adapter
124 124  
125 -==== Press the RST switch on the LA66 LoRaWAN Shield once ====
152 +[[image:image-20220602100052-2.png||height="385" width="600"]]
126 126  
127 -[[image:image-20220602104701-12.png]]
128 128  
129 -==== Open the upgrade application software ====
155 +=== 2.8.2  Connection ===
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 +[[image:image-20220602101311-3.png||height="276" width="600"]]
159 +
160 +
161 +(% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  **<->** (% style="color:blue" %)**USB TTL**
162 +
163 +(% style="background-color:yellow" %)**GND  <-> GND
164 +TXD  <->  TXD
165 +RXD  <->  RXD**
166 +
167 +
168 +Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module)
169 +
170 +Connect USB TTL Adapter to PC after connecting the wires
171 +
172 +
173 +[[image:image-20220602102240-4.png||height="304" width="600"]]
174 +
175 +
176 +=== 2.8.3  Upgrade steps ===
177 +
178 +
179 +==== 1.  Switch SW1 to put in ISP position ====
180 +
181 +
182 +[[image:image-20220602102824-5.png||height="306" width="600"]]
183 +
184 +
185 +
186 +==== 2.  Press the RST switch once ====
187 +
188 +
189 +[[image:image-20220602104701-12.png||height="285" width="600"]]
190 +
191 +
192 +
193 +==== 3.  Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ====
194 +
195 +
196 +(% 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/]]**
197 +
198 +
133 133  [[image:image-20220602103227-6.png]]
134 134  
201 +
135 135  [[image:image-20220602103357-7.png]]
136 136  
137 -===== Select the COM port corresponding to USB TTL =====
138 138  
205 +
206 +(% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %)
207 +(% style="color:blue" %)**2. Select the COM port corresponding to USB TTL**
208 +
209 +
139 139  [[image:image-20220602103844-8.png]]
140 140  
141 -===== Select the bin file to burn =====
142 142  
213 +
214 +(% class="wikigeneratedid" id="HSelectthebinfiletoburn" %)
215 +(% style="color:blue" %)**3. Select the bin file to burn**
216 +
217 +
143 143  [[image:image-20220602104144-9.png]]
144 144  
220 +
145 145  [[image:image-20220602104251-10.png]]
146 146  
223 +
147 147  [[image:image-20220602104402-11.png]]
148 148  
149 -===== Click to start the download =====
150 150  
227 +
228 +(% class="wikigeneratedid" id="HClicktostartthedownload" %)
229 +(% style="color:blue" %)**4. Click to start the download**
230 +
151 151  [[image:image-20220602104923-13.png]]
152 152  
153 -===== The following figure appears to prove that the burning is in progress =====
154 154  
234 +
235 +(% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %)
236 +(% style="color:blue" %)**5. Check update process**
237 +
238 +
155 155  [[image:image-20220602104948-14.png]]
156 156  
157 -===== The following picture appears to prove that the burning is successful =====
158 158  
242 +
243 +(% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %)
244 +(% style="color:blue" %)**The following picture shows that the burning is successful**
245 +
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
250 += 3.  LA66 USB LoRaWAN Adapter =
166 166  
167 -== Pin Mapping & LED ==
168 168  
169 -== Example Send & Get Messages via LoRaWAN in PC ==
253 +== 3.1  Overview ==
170 170  
171 -== Example Send & Get Messages via LoRaWAN in RPi ==
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.
172 172  
173 -Connect the LA66 LoRa Shield to the RPI
174 174  
175 -[[image:image-20220602153333-4.png]]
258 +== 3.2  Features ==
176 176  
177 -Log in to the RPI's terminal and connect to the serial port
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
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
272 +== 3.3  Specification ==
183 183  
184 -[[image:image-20220602154928-5.png]]
274 +* CPU: 32-bit 48 MHz
275 +* Flash: 256KB
276 +* RAM: 64KB
277 +* Input Power Range: 5v
278 +* Frequency Range: 150 MHz ~~ 960 MHz
279 +* Maximum Power +22 dBm constant RF output
280 +* High sensitivity: -148 dBm
281 +* Temperature:
282 +** Storage: -55 ~~ +125℃
283 +** Operating: -40 ~~ +85℃
284 +* Humidity:
285 +** Storage: 5 ~~ 95% (Non-Condensing)
286 +** Operating: 10 ~~ 95% (Non-Condensing)
287 +* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
288 +* LoRa Rx current: <9 mA
185 185  
186 -send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
187 187  
291 +== 3.4  Pin Mapping & LED ==
292 +
293 +
294 +
295 +== 3.5  Example: Send & Get Messages via LoRaWAN in PC ==
296 +
297 +
298 +Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
299 +
300 +
301 +(% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN adapter to PC**
302 +
303 +
304 +[[image:image-20220602171217-1.png||height="538" width="800"]]
305 +
306 +
307 +Open the serial port tool
308 +
309 +[[image:image-20220602161617-8.png]]
310 +
311 +[[image:image-20220602161718-9.png||height="457" width="800"]]
312 +
313 +
314 +
315 +(% style="color:blue" %)**2. Press the reset switch RST on the LA66 USB LoRaWAN Adapter to reset it.**
316 +
317 +The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully Join the LoRaWAN network
318 +
319 +
320 +[[image:image-20220602161935-10.png||height="498" width="800"]]
321 +
322 +
323 +
324 +(% style="color:blue" %)**3. See Uplink Command**
325 +
326 +Command format: (% style="color:#4472c4" %)** AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
327 +
188 188  example: AT+SENDB=01,02,8,05820802581ea0a5
189 189  
190 -[[image:image-20220602160339-6.png]]
330 +[[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 ===
334 +(% style="color:blue" %)**4. Check to see if TTN received the message**
197 197  
198 -Enter the following command in the RPI terminal
336 +[[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
340 +== 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. ===
343 +**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： ====
346 +(% style="color:red" %)**Preconditions:**
213 213  
214 -===== Preconditions: =====
348 +(% style="color:red" %)**1. LA66 USB LoRaWAN Adapter works fine**
215 215  
216 -1.LA66 LoRa Shield works fine
350 +(% 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
354 +(% style="color:blue" %)**Steps for usage:**
223 223  
224 -[[image:image-20220602114148-1.png]]
356 +(% 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
358 +(% style="color:blue" %)**2.**(%%) Run the python script in PC and see the TTN
227 227  
228 -[[image:image-20220602115852-3.png]]
360 +[[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. ==
364 +== 3.7  Example: Send & Get Messages via LoRaWAN in RPi ==
233 233  
234 234  
235 -== Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
367 +Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
368 +
369 +
370 +(% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN Adapter to the Raspberry Pi**
371 +
372 +[[image:image-20220602171233-2.png||height="538" width="800"]]
373 +
374 +
375 +
376 +(% style="color:blue" %)**2. Install Minicom in RPi.**
377 +
378 +(% id="cke_bm_509388S" style="display:none" %) (%%)Enter the following command in the RPi terminal
379 +
380 + (% style="background-color:yellow" %)**apt update**
381 +
382 + (% style="background-color:yellow" %)**apt install minicom**
383 +
384 +
385 +Use minicom to connect to the RPI's terminal
386 +
387 +[[image:image-20220602153146-3.png||height="439" width="500"]]
388 +
389 +
390 +
391 +(% style="color:blue" %)**3. Press the reset switch RST on the LA66 USB LoRaWAN Adapter.**
392 +
393 +The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully entered the network.
394 +
395 +
396 +[[image:image-20220602154928-5.png||height="436" width="500"]]
397 +
398 +
399 +
400 +(% style="color:blue" %)**4. Send Uplink message**
401 +
402 +Format: (% style="color:#4472c4" %)**AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
403 +
404 +example: AT+SENDB=01,02,8,05820802581ea0a5
405 +
406 +
407 +[[image:image-20220602160339-6.png||height="517" width="600"]]
408 +
409 +
410 +
411 +Check to see if TTN received the message
412 +
413 +[[image:image-20220602160627-7.png||height="369" width="800"]]
414 +
415 +
416 +
417 +== 3.8  Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
418 +
419 +
420 +
421 +== 3.9  Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
422 +
423 +
424 +
425 +
426 += 4.  Order Info =
427 +
428 +
429 +**Part Number:**  (% style="color:blue" %)**LA66-XXX**(%%), (% style="color:blue" %)**LA66-LoRaWAN-Shield-XXX** (%%) **or**  (% style="color:blue" %)**LA66-USB-LoRaWAN-Adapter-XXX**
430 +
431 +
432 +(% style="color:blue" %)**XXX**(%%): The default frequency band
433 +
434 +* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
435 +* (% style="color:red" %)**AU915**(%%):  LoRaWAN AU915 band
436 +* (% style="color:red" %)**EU433**(%%):  LoRaWAN EU433 band
437 +* (% style="color:red" %)**EU868**(%%):  LoRaWAN EU868 band
438 +* (% style="color:red" %)**KR920**(%%):  LoRaWAN KR920 band
439 +* (% style="color:red" %)**US915**(%%):  LoRaWAN US915 band
440 +* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
441 +* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
442 +* (% style="color:red" %)**PP**(%%):  Peer to Peer LoRa Protocol
443 +
444 +
445 +
446 += 5.  Reference =
447 +
448 +* Hardware Design File for LA66 LoRaWAN Shield, LA66 USB LoRaWAN Adapter : [[Download>>https://www.dropbox.com/sh/a3wbmdcvqjxaqw5/AADZfvAiykJTK624RgMquH86a?dl=0]]
449 +
450 +
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