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Last modified by Xiaoling on 2023/09/19 09:20
From version 87.14
edited by Xiaoling
on 2022/07/13 10:06
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To version 162.3
edited by Xiaoling
on 2023/06/05 15:35
Change comment: There is no comment for this version

Summary

Details

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Title
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1 -LA66 LoRaWAN Module
1 +LA66 LoRaWAN Module User Manual
Content
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8 8  
9 9  = 1.  LA66 LoRaWAN Module =
10 10  
11 -
12 12  == 1.1  What is LA66 LoRaWAN Module ==
13 13  
14 14  
14 +(((
15 +(((
16 +[[image:image-20220719093358-2.png||height="145" width="220"]](% style="color:blue" %)** **
17 +)))
18 +
19 +(((
20 +
21 +)))
22 +
23 +(((
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.
25 +)))
26 +)))
16 16  
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.
28 +(((
29 +(((
30 +(% style="color:blue" %)**LA66**(%%) is a ready-to-use module that includes the (% style="color:blue" %)**LoRaWAN v1.0.3 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.
31 +)))
32 +)))
18 18  
34 +(((
35 +(((
19 19  Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
37 +)))
20 20  
39 +(((
21 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.
41 +)))
42 +)))
22 22  
44 +(((
45 +(((
23 23  LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
47 +)))
48 +)))
24 24  
25 25  
26 26  == 1.2  Features ==
27 27  
28 -* Support LoRaWAN v1.0.4 protocol
53 +
54 +* Support LoRaWAN v1.0.3 protocol
29 29  * Support peer-to-peer protocol
30 30  * TCXO crystal to ensure RF performance on low temperature
31 31  * SMD Antenna pad and i-pex antenna connector
... ... @@ -39,6 +39,7 @@
39 39  
40 40  == 1.3  Specification ==
41 41  
68 +
42 42  * CPU: 32-bit 48 MHz
43 43  * Flash: 256KB
44 44  * RAM: 64KB
... ... @@ -61,399 +61,175 @@
61 61  
62 62  == 1.4  AT Command ==
63 63  
64 -AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents.
65 65  
92 +AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in[[ AT Command documents>>https://www.dropbox.com/sh/wtq43za8sykpgta/AABAEE02uEAsRU-JV7bzEhMba?dl=0]].
66 66  
94 +
67 67  == 1.5  Dimension ==
68 68  
69 -[[image:image-20220517072526-1.png]]
70 70  
98 +[[image:image-20220718094750-3.png]]
71 71  
72 72  
73 73  == 1.6  Pin Mapping ==
74 74  
103 +[[image:image-20220720111850-1.png]]
75 75  
76 -[[image:image-20220523101537-1.png]]
77 77  
78 -
79 -
80 80  == 1.7  Land Pattern ==
81 81  
108 +
82 82  [[image:image-20220517072821-2.png]]
83 83  
84 84  
112 += 2.  FAQ =
85 85  
86 -= 2.  LA66 LoRaWAN Shield =
114 +== 2.1  Where to find examples of how to use LA66? ==
87 87  
88 88  
89 -== 2.1  Overview ==
117 +(% class="wikigeneratedid" %)
118 +Below products are made by LA66. User can use their examples as reference:
90 90  
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.
120 +* [[LA66 Shield for Arduino>>doc:Main.User Manual for LoRaWAN End Nodes.LA66 LoRaWAN Shield User Manual.WebHome]]
121 +* [[LA66 USB Adapter>>doc:Main.User Manual for LoRaWAN End Nodes.LA66 USB LoRaWAN Adapter User Manual.WebHome]]
92 92  
93 93  
94 -== 2.2  Features ==
95 95  
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
125 +== 2.2  How to Compile Source Code for LA66? ==
106 106  
107 107  
128 +Compile and Upload Code to ASR6601 Platform：[[Instruction>>Compile and Upload Code to ASR6601 Platform]]
108 108  
109 -== 2.3  Specification ==
110 110  
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
131 +== 2.3  Can i use LA66 module's internal I/O without external MCU, So to save product cost? ==
128 128  
129 129  
134 +Yes, this is possible, user can refer[[ the source code from ASR >>https://github.com/asrlora/asr_lora_6601/tree/master/projects/ASR6601SE-EVAL/examples/lora]]to get examples for how to its I/O Interfaces.
130 130  
131 -== 2.4  Pin Mapping & LED ==
132 132  
137 +== 2.4  Where to find Peer-to-Peer firmware of LA66? ==
133 133  
134 134  
135 -== 2.5  Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
140 +Instruction for LA66 Peer to Peer firmware :[[ Instruction >>doc:Main.User Manual for LoRaWAN End Nodes.LA66 LoRaWAN Shield User Manual.Instruction for LA66 Peer to Peer firmware.WebHome]]
136 136  
137 137  
143 +== 2.5 How can i use J-LInk to debug LA66? ==
138 138  
139 -== 2.6  Example: Join TTN network and send an uplink message, get downlink message. ==
140 140  
146 +(% style="color:#037691" %)**The steps are as follows:**
141 141  
142 142  
143 -== 2.7  Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
149 +(% style="color:blue" %)**1. Install J-Link software from**
144 144  
151 +[[https:~~/~~/www.segger.com/downloads/jlink/>>url:https://www.segger.com/downloads/jlink/]]
145 145  
146 146  
147 -== 2.8  Upgrade Firmware of LA66 LoRaWAN Shield ==
154 +(% style="color:blue" %)**2. Expose PA6 / PA7 / RSTN of LA66.**
148 148  
149 149  
150 -=== 2.8.1  Items needed for update ===
157 +[[image:image-20230605151850-1.png]]
151 151  
152 -1. LA66 LoRaWAN Shield
153 -1. Arduino
154 -1. USB TO TTL Adapter
155 155  
160 +[[image:image-20230605151850-2.png]]
156 156  
157 157  
163 +(% style="color:blue" %)**3. Connect JLINK, and switch mother board SW1 to ISP. Wire connection as below:**
158 158  
159 -[[image:image-20220602100052-2.png||height="385" width="600"]]
165 +**LA66 PA6 < ~-~- > JLINK SWDIO (Pin 7)**
160 160  
167 +**LA66 PA7 < ~-~- > JLINK SWCLK (Pin 9)**
161 161  
162 -=== 2.8.2  Connection ===
169 +**LA66 RSTN < ~-~- > JLINK RESET (Pin 15)**
163 163  
171 +**LA66 GND  < ~-~- > JLINK GND (Pin 8)**
164 164  
165 -[[image:image-20220602101311-3.png||height="276" width="600"]]
173 +[[image:image-20230605151850-3.png||height="629" width="1182"]]
166 166  
175 +(% style="display:none" %) (%%)
167 167  
168 -(% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  **<->** (% style="color:blue" %)**USB TTL**
177 +(% style="color:blue" %)**4. Copy \SN50v3\tools\FLM\ASR6601.FLM to \Keil\ARM\ Flash\**
169 169  
170 -(% style="background-color:yellow" %)**GND  <-> GND
171 -TXD  <->  TXD
172 -RXD  <->  RXD**
179 +(% style="display:none" %) [[image:image-20230605151850-4.png]]
173 173  
174 174  
175 -Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module)
182 +**Add ASR6601 256KB Flash to Flash Download**
176 176  
177 -Connect USB TTL Adapter to PC after connecting the wires
184 +[[image:image-20230605152412-12.png]]
178 178  
179 179  
180 -[[image:image-20220602102240-4.png||height="304" width="600"]]
187 +[[image:image-20230605151851-6.png]]
181 181  
182 182  
183 -=== 2.8.3  Upgrade steps ===
190 +(% style="color:blue" %)**5. Modify \SN50v3\Projects\Applications\DRAGINO-LRWAN-AT\cfg\gcc.ld, to 0x08000000.**
184 184  
185 185  
186 -==== 1.  Switch SW1 to put in ISP position ====
193 +[[image:image-20230605151851-7.png]]
187 187  
195 +[[image:image-20230605151851-8.png]]
188 188  
189 -[[image:image-20220602102824-5.png||height="306" width="600"]]
190 190  
198 +(% style="color:red" %)**Note: After debug, user should change the Flash address back to 0x0800D000, and upload the OTA bootloader to LA66. Otherwise, the compiled program doesn't support OTA update.**
191 191  
192 192  
193 -==== 2.  Press the RST switch once ====
201 +(% style="color:blue" %)**6. Comment the low power function in main.c.**
194 194  
195 195  
196 -[[image:image-20220602104701-12.png||height="285" width="600"]]
204 +[[image:image-20230605151851-9.png]]
197 197  
198 198  
207 +(% style="color:blue" %)**Click Debug mode to debug.**
199 199  
200 -==== 3.  Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ====
209 +[[image:image-20230605151851-10.png||height="293" width="1275"]]
201 201  
202 202  
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/]]**
212 +[[image:image-20230605151851-11.png||height="739" width="1275"]](% style="display:none" %)
204 204  
214 +(% style="display:none" %) (%%)
205 205  
206 -[[image:image-20220602103227-6.png]]
216 += 3.  Order Info =
207 207  
208 208  
209 -[[image:image-20220602103357-7.png]]
219 +**Part Number:**  (% style="color:blue" %)**LA66-XXX**
210 210  
221 +(% style="color:blue" %)**XXX**(%%): The default frequency band
211 211  
223 +* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
224 +* (% style="color:red" %)**AU915**(%%):  LoRaWAN AU915 band
225 +* (% style="color:red" %)**EU433**(%%):  LoRaWAN EU433 band
226 +* (% style="color:red" %)**EU868**(%%):  LoRaWAN EU868 band
227 +* (% style="color:red" %)**KR920**(%%):  LoRaWAN KR920 band
228 +* (% style="color:red" %)**US915**(%%):  LoRaWAN US915 band
229 +* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
230 +* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
231 +* (% style="color:red" %)**PP**(%%):  Peer to Peer LoRa Protocol
212 212  
213 -(% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %)
214 -(% style="color:blue" %)**2. Select the COM port corresponding to USB TTL**
215 215  
216 216  
217 -[[image:image-20220602103844-8.png]]
235 += 4.  FCC Statement =
218 218  
219 219  
238 +(% style="color:red" %)**FCC Caution:**
220 220  
221 -(% class="wikigeneratedid" id="HSelectthebinfiletoburn" %)
222 -(% style="color:blue" %)**3. Select the bin file to burn**
240 +Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
223 223  
242 +This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
224 224  
225 -[[image:image-20220602104144-9.png]]
226 226  
245 +(% style="color:red" %)**IMPORTANT NOTE: **
227 227  
228 -[[image:image-20220602104251-10.png]]
247 +(% style="color:red" %)**Note:**(%%) This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
229 229  
249 +—Reorient or relocate the receiving antenna.
230 230  
231 -[[image:image-20220602104402-11.png]]
251 +—Increase the separation between the equipment and receiver.
232 232  
253 +—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
233 233  
255 +—Consult the dealer or an experienced radio/TV technician for help.
234 234  
235 -(% class="wikigeneratedid" id="HClicktostartthedownload" %)
236 -(% style="color:blue" %)**4. Click to start the download**
237 237  
238 -[[image:image-20220602104923-13.png]]
258 +(% style="color:red" %)**FCC Radiation Exposure Statement: **
239 239  
260 +This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.This equipment should be installed and operated with minimum distance 20cm between the radiator& your body.
240 240  
241 -
242 -(% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %)
243 -(% style="color:blue" %)**5. Check update process**
244 -
245 -
246 -[[image:image-20220602104948-14.png]]
247 -
248 -
249 -
250 -(% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %)
251 -(% style="color:blue" %)**The following picture shows that the burning is successful**
252 -
253 -[[image:image-20220602105251-15.png]]
254 -
255 -
256 -
257 -= 3.  LA66 USB LoRaWAN Adapter =
258 -
259 -
260 -== 3.1  Overview ==
261 -
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.
263 -
264 -
265 -== 3.2  Features ==
266 -
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
277 -
278 -
279 -
280 -== 3.3  Specification ==
281 -
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
297 -
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 -
337 -example: AT+SENDB=01,02,8,05820802581ea0a5
338 -
339 -[[image:image-20220602162157-11.png||height="497" width="800"]]
340 -
341 -
342 -
343 -(% style="color:blue" %)**4. Check to see if TTN received the message**
344 -
345 -[[image:image-20220602162331-12.png||height="420" width="800"]]
346 -
347 -
348 -
349 -== 3.6  Example: Send PC's CPU/RAM usage to TTN via python ==
350 -
351 -
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]]
353 -
354 -
355 -(% style="color:red" %)**Preconditions:**
356 -
357 -(% style="color:red" %)**1. LA66 USB LoRaWAN Adapter works fine**
358 -
359 -(% style="color:red" %)**2. LA66 USB LoRaWAN Adapter  is registered with TTN**
360 -
361 -
362 -
363 -(% style="color:blue" %)**Steps for usage:**
364 -
365 -(% style="color:blue" %)**1.**(%%) Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
366 -
367 -(% style="color:blue" %)**2.**(%%) Run the python script in PC and see the TTN
368 -
369 -[[image:image-20220602115852-3.png||height="450" width="1187"]]
370 -
371 -
372 -
373 -== 3.7  Example: Send & Get Messages via LoRaWAN in RPi ==
374 -
375 -
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 -
459 459  
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