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Last modified by Xiaoling on 2023/09/19 09:20
From version 162.6
edited by Xiaoling
on 2023/09/19 09:20
Change comment: There is no comment for this version
To version 87.1
edited by Edwin Chen
on 2022/07/11 09:10
Change comment: There is no comment for this version

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Title
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1 -LA66 LoRaWAN Module User Manual
1 +LA66 LoRaWAN Module
Author
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1 -XWiki.Xiaoling
1 +XWiki.Edwin
Content
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1 -
1 +{{box cssClass="floatinginfobox" title="**Contents**"}}
2 +{{toc/}}
3 +{{/box}}
2 2  
3 -**Table of Contents:**
5 += LA66 LoRaWAN Module =
4 4  
5 -{{toc/}}
7 +== What is LA66 LoRaWAN Module ==
6 6  
9 +(% 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.
7 7  
11 +(% 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.
8 8  
9 -= 1.  LA66 LoRaWAN Module =
13 +Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
10 10  
11 -== 1.1  What is LA66 LoRaWAN Module ==
15 +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.
12 12  
17 +LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
13 13  
14 -(((
15 -(((
16 -[[image:image-20220719093358-2.png||height="145" width="220"]](% style="color:blue" %)** **
17 -)))
18 18  
19 -(((
20 -
21 -)))
20 +== Features ==
22 22  
23 -(((
24 -(% 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 -)))
22 +* Support LoRaWAN v1.0.4 protocol
23 +* Support peer-to-peer protocol
24 +* TCXO crystal to ensure RF performance on low temperature
25 +* SMD Antenna pad and i-pex antenna connector
26 +* Available in different frequency LoRaWAN frequency bands.
27 +* World-wide unique OTAA keys.
28 +* AT Command via UART-TTL interface
29 +* Firmware upgradable via UART interface
30 +* Ultra-long RF range
27 27  
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 -)))
32 +== Specification ==
33 33  
34 -(((
35 -(((
36 -Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
37 -)))
34 +* CPU: 32-bit 48 MHz
35 +* Flash: 256KB
36 +* RAM: 64KB
37 +* Input Power Range: 1.8v ~~ 3.7v
38 +* Power Consumption: < 4uA.
39 +* Frequency Range: 150 MHz ~~ 960 MHz
40 +* Maximum Power +22 dBm constant RF output
41 +* High sensitivity: -148 dBm
42 +* Temperature:
43 +** Storage: -55 ~~ +125℃
44 +** Operating: -40 ~~ +85℃
45 +* Humidity:
46 +** Storage: 5 ~~ 95% (Non-Condensing)
47 +** Operating: 10 ~~ 95% (Non-Condensing)
48 +* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
49 +* LoRa Rx current: <9 mA
50 +* I/O Voltage: 3.3v
38 38  
39 -(((
40 -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 -)))
52 +== AT Command ==
43 43  
44 -(((
45 -(((
46 -LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
47 -)))
48 -)))
54 +AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents.
49 49  
50 50  
51 -== 1.2  Features ==
57 +== Dimension ==
52 52  
59 +[[image:image-20220517072526-1.png]]
53 53  
54 -* Support LoRaWAN v1.0.3 protocol
61 +
62 +== Pin Mapping ==
63 +
64 +[[image:image-20220523101537-1.png]]
65 +
66 +== Land Pattern ==
67 +
68 +[[image:image-20220517072821-2.png]]
69 +
70 +
71 +
72 += LA66 LoRaWAN Shield =
73 +
74 +== Overview ==
75 +
76 +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.
77 +
78 +
79 +== Features ==
80 +
81 +* Arduino Shield base on LA66 LoRaWAN module
82 +* Support LoRaWAN v1.0.4 protocol
55 55  * Support peer-to-peer protocol
56 56  * TCXO crystal to ensure RF performance on low temperature
57 -* SMD Antenna pad and i-pex antenna connector
85 +* SMA connector
58 58  * Available in different frequency LoRaWAN frequency bands.
59 59  * World-wide unique OTAA keys.
60 60  * AT Command via UART-TTL interface
... ... @@ -61,9 +61,8 @@
61 61  * Firmware upgradable via UART interface
62 62  * Ultra-long RF range
63 63  
64 -== 1.3  Specification ==
92 +== Specification ==
65 65  
66 -
67 67  * CPU: 32-bit 48 MHz
68 68  * Flash: 256KB
69 69  * RAM: 64KB
... ... @@ -82,174 +82,269 @@
82 82  * LoRa Rx current: <9 mA
83 83  * I/O Voltage: 3.3v
84 84  
85 -== 1.4  AT Command ==
112 +== Pin Mapping & LED ==
86 86  
114 +== Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
87 87  
88 -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/scl/fi/3mll5vn9wd446wuk7fwtn/LA66-AT-commands.pdf?rlkey=webesgp6himl162wnx7xssqa1&dl=0]].
116 +== Example: Join TTN network and send an uplink message, get downlink message. ==
89 89  
90 -== 1.5  Dimension ==
118 +== Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
91 91  
120 +== Upgrade Firmware of LA66 LoRaWAN Shield ==
92 92  
93 -[[image:image-20220718094750-3.png]]
122 +=== Items needed for update ===
94 94  
124 +1. LA66 LoRaWAN Shield
125 +1. Arduino
126 +1. USB TO TTL Adapter
95 95  
96 -== 1.6  Pin Mapping ==
128 +[[image:image-20220602100052-2.png||height="385" width="600"]]
97 97  
98 -[[image:image-20220720111850-1.png]]
99 99  
131 +=== Connection ===
100 100  
101 -== 1.7  Land Pattern ==
133 +[[image:image-20220602101311-3.png||height="276" width="600"]]
102 102  
135 +(% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  <-> (% style="color:blue" %)**USB TTL**(%%)
136 +**GND  <-> GND
137 +TXD  <-> TXD
138 +RXD  <-> RXD**
103 103  
104 -[[image:image-20220517072821-2.png]]
140 +Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module)
105 105  
142 +Connect USB TTL Adapter to PC after connecting the wires
106 106  
107 -= 2.  FAQ =
108 108  
109 -== 2.1  Where to find examples of how to use LA66? ==
145 +[[image:image-20220602102240-4.png||height="304" width="600"]]
110 110  
111 111  
112 -(% class="wikigeneratedid" %)
113 -Below products are made by LA66. User can use their examples as reference:
148 +=== Upgrade steps ===
114 114  
115 -* [[LA66 Shield for Arduino>>doc:Main.User Manual for LoRaWAN End Nodes.LA66 LoRaWAN Shield User Manual.WebHome]]
116 -* [[LA66 USB Adapter>>doc:Main.User Manual for LoRaWAN End Nodes.LA66 USB LoRaWAN Adapter User Manual.WebHome]]
150 +==== Switch SW1 to put in ISP position ====
117 117  
118 -== 2.2  How to Compile Source Code for LA66? ==
152 +[[image:image-20220602102824-5.png||height="306" width="600"]]
119 119  
120 120  
121 -Compile and Upload Code to ASR6601 Platform：[[Instruction>>Compile and Upload Code to ASR6601 Platform]]
155 +==== Press the RST switch once ====
122 122  
157 +[[image:image-20220602104701-12.png||height="285" width="600"]]
123 123  
124 -== 2.3  Can i use LA66 module's internal I/O without external MCU, So to save product cost? ==
125 125  
160 +==== Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ====
126 126  
127 -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.
162 +**~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/]]**
128 128  
164 +[[image:image-20220602103227-6.png]]
129 129  
130 -== 2.4  Where to find Peer-to-Peer firmware of LA66? ==
166 +[[image:image-20220602103357-7.png]]
131 131  
132 132  
133 -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]]
169 +(% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %)
170 +**2. Select the COM port corresponding to USB TTL**
134 134  
172 +[[image:image-20220602103844-8.png]]
135 135  
136 -== 2.5 How can i use J-LInk to debug LA66? ==
137 137  
175 +(% class="wikigeneratedid" id="HSelectthebinfiletoburn" %)
176 +**3. Select the bin file to burn**
138 138  
139 -(% style="color:#037691" %)**The steps are as follows:**
178 +[[image:image-20220602104144-9.png]]
140 140  
180 +[[image:image-20220602104251-10.png]]
141 141  
142 -(% style="color:blue" %)**1. Install J-Link software from**
182 +[[image:image-20220602104402-11.png]]
143 143  
144 -[[https:~~/~~/www.segger.com/downloads/jlink/>>url:https://www.segger.com/downloads/jlink/]]
145 145  
185 +(% class="wikigeneratedid" id="HClicktostartthedownload" %)
186 +**4. Click to start the download**
146 146  
147 -(% style="color:blue" %)**2. Expose PA6 / PA7 / RSTN of LA66.**
188 +[[image:image-20220602104923-13.png]]
148 148  
149 149  
150 -[[image:image-20230605151850-1.png||height="676" width="640"]]
191 +(% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %)
192 +**5. Check update process**
151 151  
194 +[[image:image-20220602104948-14.png]]
152 152  
153 -[[image:image-20230605151850-2.png]]
154 154  
155 -(% style="display:none" %) (%%)
197 +(% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %)
198 +**The following picture shows that the burning is successful**
156 156  
157 -(% style="color:blue" %)**3. Connect JLINK, and switch mother board SW1 to ISP. Wire connection as below:**
200 +[[image:image-20220602105251-15.png]]
158 158  
159 159  
160 -**LA66 PA6 < ~-~- > JLINK SWDIO (Pin 7)**
161 161  
162 -**LA66 PA7 < ~-~- > JLINK SWCLK (Pin 9)**
204 += LA66 USB LoRaWAN Adapter =
163 163  
164 -**LA66 RSTN < ~-~- > JLINK RESET (Pin 15)**
206 +== Overview ==
165 165  
166 -**LA66 GND  < ~-~- > JLINK GND (Pin 8)**
208 +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.
167 167  
168 -[[image:image-20230605151850-3.png||height="629" width="1182"]]
169 169  
170 -(% style="display:none" %) (%%)
211 +== Features ==
171 171  
172 -(% style="color:blue" %)**4. Copy \SN50v3\tools\FLM\ASR6601.FLM to \Keil\ARM\ Flash\**
213 +* LoRaWAN USB adapter base on LA66 LoRaWAN module
214 +* Ultra-long RF range
215 +* Support LoRaWAN v1.0.4 protocol
216 +* Support peer-to-peer protocol
217 +* TCXO crystal to ensure RF performance on low temperature
218 +* Spring RF antenna
219 +* Available in different frequency LoRaWAN frequency bands.
220 +* World-wide unique OTAA keys.
221 +* AT Command via UART-TTL interface
222 +* Firmware upgradable via UART interface
173 173  
174 -(% style="display:none" %) [[image:image-20230605151850-4.png]]
224 +== Specification ==
175 175  
226 +* CPU: 32-bit 48 MHz
227 +* Flash: 256KB
228 +* RAM: 64KB
229 +* Input Power Range: 5v
230 +* Frequency Range: 150 MHz ~~ 960 MHz
231 +* Maximum Power +22 dBm constant RF output
232 +* High sensitivity: -148 dBm
233 +* Temperature:
234 +** Storage: -55 ~~ +125℃
235 +** Operating: -40 ~~ +85℃
236 +* Humidity:
237 +** Storage: 5 ~~ 95% (Non-Condensing)
238 +** Operating: 10 ~~ 95% (Non-Condensing)
239 +* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
240 +* LoRa Rx current: <9 mA
176 176  
177 -**Add ASR6601 256KB Flash to Flash Download**
242 +== Pin Mapping & LED ==
178 178  
179 -[[image:image-20230605152412-12.png]]
244 +== Example Send & Get Messages via LoRaWAN in PC ==
180 180  
246 +Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
181 181  
182 -[[image:image-20230605151851-6.png]]
248 +~1. Connect the LA66 USB LoRaWAN adapter to PC
183 183  
250 +[[image:image-20220602171217-1.png||height="538" width="800"]]
184 184  
185 -(% style="color:blue" %)**5. Modify \SN50v3\Projects\Applications\DRAGINO-LRWAN-AT\cfg\gcc.ld, to 0x08000000.**
252 +Open the serial port tool
186 186  
254 +[[image:image-20220602161617-8.png]]
187 187  
188 -[[image:image-20230605151851-7.png]]
256 +[[image:image-20220602161718-9.png||height="457" width="800"]]
189 189  
190 -[[image:image-20230605151851-8.png]]
191 191  
259 +2. Press the reset switch RST on the LA66 USB LoRaWAN Adapter to reset it.
192 192  
193 -(% 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.**
261 +The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully Join the LoRaWAN network
194 194  
263 +[[image:image-20220602161935-10.png||height="498" width="800"]]
195 195  
196 -(% style="color:blue" %)**6. Comment the low power function in main.c.**
197 197  
266 +3. See Uplink Command
198 198  
199 -[[image:image-20230605151851-9.png]]
268 +Command format: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
200 200  
270 +example: AT+SENDB=01,02,8,05820802581ea0a5
201 201  
202 -(% style="color:blue" %)**Click Debug mode to debug.**
272 +[[image:image-20220602162157-11.png||height="497" width="800"]]
203 203  
204 -[[image:image-20230605151851-10.png||height="293" width="1275"]]
205 205  
275 +4. Check to see if TTN received the message
206 206  
207 -[[image:image-20230605151851-11.png||height="739" width="1275"]](% style="display:none" %)
277 +[[image:image-20220602162331-12.png||height="420" width="800"]]
208 208  
209 -(% style="display:none" %) (%%)
210 210  
211 -= 3.  Order Info =
212 212  
281 +== Example:Send PC's CPU/RAM usage to TTN via python ==
213 213  
214 -**Part Number:**  (% style="color:blue" %)**LA66-XXX**
283 +(% class="wikigeneratedid" id="HUsepythonasanexampleFF1A" %)
284 +**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]]
215 215  
216 -(% style="color:blue" %)**XXX**(%%): The default frequency band
286 +(% class="wikigeneratedid" id="HPreconditions:" %)
287 +**Preconditions:**
217 217  
218 -* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
219 -* (% style="color:red" %)**AU915**(%%):  LoRaWAN AU915 band
220 -* (% style="color:red" %)**EU433**(%%):  LoRaWAN EU433 band
221 -* (% style="color:red" %)**EU868**(%%):  LoRaWAN EU868 band
222 -* (% style="color:red" %)**KR920**(%%):  LoRaWAN KR920 band
223 -* (% style="color:red" %)**US915**(%%):  LoRaWAN US915 band
224 -* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
225 -* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
226 -* (% style="color:red" %)**PP**(%%):  Peer to Peer LoRa Protocol
289 +1.LA66 USB LoRaWAN Adapter works fine
227 227  
228 -= 4.  FCC Statement =
291 +2.LA66 USB LoRaWAN Adapter  is registered with TTN
229 229  
293 +(% class="wikigeneratedid" id="HStepsforusage" %)
294 +**Steps for usage**
230 230  
231 -(% style="color:red" %)**FCC Caution:**
296 +1.Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
232 232  
233 -Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
298 +2.Run the python script in PC and see the TTN
234 234  
235 -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.
300 +[[image:image-20220602115852-3.png||height="450" width="1187"]]
236 236  
237 237  
238 -(% style="color:red" %)**IMPORTANT NOTE: **
239 239  
240 -(% 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:
304 +== Example Send & Get Messages via LoRaWAN in RPi ==
241 241  
242 -—Reorient or relocate the receiving antenna.
306 +Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
243 243  
244 -—Increase the separation between the equipment and receiver.
308 +~1. Connect the LA66 USB LoRaWAN Adapter to the Raspberry Pi
245 245  
246 -—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
310 +[[image:image-20220602171233-2.png||height="538" width="800"]]
247 247  
248 -—Consult the dealer or an experienced radio/TV technician for help.
249 249  
313 +2. Install Minicom in RPi.
250 250  
251 -(% style="color:red" %)**FCC Radiation Exposure Statement: **
315 +(% id="cke_bm_509388S" style="display:none" %) (%%)Enter the following command in the RPi terminal
252 252  
253 -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.
317 +(% class="mark" %)apt update
254 254  
319 +(% class="mark" %)apt install minicom
320 +
321 +
322 +Use minicom to connect to the RPI's terminal
323 +
324 +[[image:image-20220602153146-3.png||height="439" width="500"]]
325 +
326 +
327 +3. Press the reset switch RST on the LA66 USB LoRaWAN Adapter.
328 +The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully entered the network
329 +
330 +[[image:image-20220602154928-5.png||height="436" width="500"]]
331 +
332 +
333 +4. Send Uplink message
334 +
335 +Format: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
336 +
337 +example: AT+SENDB=01,02,8,05820802581ea0a5
338 +
339 +[[image:image-20220602160339-6.png||height="517" width="600"]]
340 +
341 +Check to see if TTN received the message
342 +
343 +[[image:image-20220602160627-7.png||height="369" width="800"]]
344 +
345 +
346 +
347 +== Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
348 +
349 +
350 +== Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
351 +
352 +
353 +
354 += Order Info =
355 +
356 +Part Number:
357 +
358 +**LA66-XXX**, **LA66-LoRaWAN-Shield-XXX** or **LA66-USB-LoRaWAN-Adapter-XXX**
359 +
360 +**XXX**: The default frequency band
361 +
362 +* **AS923**: LoRaWAN AS923 band
363 +* **AU915**: LoRaWAN AU915 band
364 +* **EU433**: LoRaWAN EU433 band
365 +* **EU868**: LoRaWAN EU868 band
366 +* **KR920**: LoRaWAN KR920 band
367 +* **US915**: LoRaWAN US915 band
368 +* **IN865**: LoRaWAN IN865 band
369 +* **CN470**: LoRaWAN CN470 band
370 +* **PP**: Peer to Peer LoRa Protocol
371 +
372 +
373 += Reference =
374 +
375 +* Hardware Design File for LA66 LoRaWAN Shield, LA66 USB LoRaWAN Adapter : [[Download>>https://www.dropbox.com/sh/a3wbmdcvqjxaqw5/AADZfvAiykJTK624RgMquH86a?dl=0]]
376 +
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