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Last modified by Xiaoling on 2025/02/07 16:37
From version 172.1
edited by Bei Jinggeng
on 2024/03/15 09:56
Change comment: There is no comment for this version
To version 134.4
edited by Xiaoling
on 2022/07/26 10:37
Change comment: There is no comment for this version

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Title
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1 -LA66 USB LoRaWAN Adapter User Manual
1 +LA66 LoRaWAN Module
Author
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1 -XWiki.Bei
1 +XWiki.Xiaoling
Content
... ... @@ -6,25 +6,34 @@
6 6  
7 7  
8 8  
9 += 1.  LA66 LoRaWAN Module =
9 9  
10 10  
11 -= 1.  LA66 USB LoRaWAN Adapter =
12 +== 1.1  What is LA66 LoRaWAN Module ==
12 12  
13 -== 1.1  Overview ==
14 14  
15 +(((
16 +(((
17 +[[image:image-20220719093358-2.png||height="145" width="220"]](% style="color:blue" %)** **
18 +)))
15 15  
16 -[[image:image-20220715001142-3.png||height="194" width="294"]][[image:image-20240101111030-2.png]]
20 +(((
21 +
22 +)))
17 17  
18 -
19 19  (((
20 -(% style="color:blue" %)**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.
25 +(% 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.
21 21  )))
27 +)))
22 22  
23 23  (((
30 +(((
24 24  (% 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.
25 25  )))
33 +)))
26 26  
27 27  (((
36 +(((
28 28  Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
29 29  )))
30 30  
... ... @@ -31,34 +31,38 @@
31 31  (((
32 32  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.
33 33  )))
43 +)))
34 34  
35 35  (((
46 +(((
36 36  LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
37 37  )))
49 +)))
38 38  
39 39  
52 +
40 40  == 1.2  Features ==
41 41  
42 -
43 -* LoRaWAN USB adapter base on LA66 LoRaWAN module
44 -* Ultra-long RF range
45 -* Support LoRaWAN v1.0.3 protocol
55 +* Support LoRaWAN v1.0.4 protocol
46 46  * Support peer-to-peer protocol
47 47  * TCXO crystal to ensure RF performance on low temperature
48 -* Spring RF antenna
58 +* SMD Antenna pad and i-pex antenna connector
49 49  * Available in different frequency LoRaWAN frequency bands.
50 50  * World-wide unique OTAA keys.
51 51  * AT Command via UART-TTL interface
52 52  * Firmware upgradable via UART interface
53 -* Open Source Mobile App for LoRaWAN signal detect and GPS tracking.
63 +* Ultra-long RF range
54 54  
55 -== 1.3  Specification ==
56 56  
57 57  
67 +
68 +== 1.3  Specification ==
69 +
58 58  * CPU: 32-bit 48 MHz
59 59  * Flash: 256KB
60 60  * RAM: 64KB
61 -* Input Power Range: 5v
73 +* Input Power Range: 1.8v ~~ 3.7v
74 +* Power Consumption: < 4uA.
62 62  * Frequency Range: 150 MHz ~~ 960 MHz
63 63  * Maximum Power +22 dBm constant RF output
64 64  * High sensitivity: -148 dBm
... ... @@ -70,415 +70,643 @@
70 70  ** Operating: 10 ~~ 95% (Non-Condensing)
71 71  * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
72 72  * LoRa Rx current: <9 mA
86 +* I/O Voltage: 3.3v
73 73  
74 -== 1.4  Pin Mapping & LED ==
75 75  
76 76  
77 -[[image:image-20220813183239-3.png||height="526" width="662"]]
78 78  
91 +== 1.4  AT Command ==
79 79  
80 -== 1.5  Example: Send & Get Messages via LoRaWAN in PC ==
81 81  
94 +AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents.
82 82  
96 +
97 +
98 +== 1.5  Dimension ==
99 +
100 +[[image:image-20220718094750-3.png]]
101 +
102 +
103 +
104 +== 1.6  Pin Mapping ==
105 +
106 +[[image:image-20220720111850-1.png]]
107 +
108 +
109 +
110 +== 1.7  Land Pattern ==
111 +
112 +[[image:image-20220517072821-2.png]]
113 +
114 +
115 +
116 += 2.  LA66 LoRaWAN Shield =
117 +
118 +
119 +== 2.1  Overview ==
120 +
121 +
83 83  (((
84 -Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
123 +[[image:image-20220715000826-2.png||height="145" width="220"]]
85 85  )))
86 86  
87 -(% style="color:blue" %)**1.  Connect the LA66 USB LoRaWAN adapter to PC**
126 +(((
127 +
128 +)))
88 88  
89 -[[image:image-20220723100027-1.png]]
130 +(((
131 +(% style="color:blue" %)**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.
132 +)))
90 90  
134 +(((
135 +(((
136 +(% 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.
137 +)))
138 +)))
91 91  
92 -Open the serial port tool
140 +(((
141 +(((
142 +Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
143 +)))
144 +)))
93 93  
94 -[[image:image-20220602161617-8.png]]
146 +(((
147 +(((
148 +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.
149 +)))
150 +)))
95 95  
152 +(((
153 +(((
154 +LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
155 +)))
156 +)))
96 96  
97 -[[image:image-20220602161718-9.png||height="457" width="800"]]
98 98  
99 99  
100 -(% style="color:blue" %)**2.  Press the reset switch RST on the LA66 USB LoRaWAN Adapter to reset it.**
160 +== 2.2  Features ==
101 101  
102 -The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully Join the LoRaWAN network
162 +* Arduino Shield base on LA66 LoRaWAN module
163 +* Support LoRaWAN v1.0.4 protocol
164 +* Support peer-to-peer protocol
165 +* TCXO crystal to ensure RF performance on low temperature
166 +* SMA connector
167 +* Available in different frequency LoRaWAN frequency bands.
168 +* World-wide unique OTAA keys.
169 +* AT Command via UART-TTL interface
170 +* Firmware upgradable via UART interface
171 +* Ultra-long RF range
103 103  
104 -[[image:image-20220602161935-10.png||height="498" width="800"]]
173 +== 2.3  Specification ==
105 105  
175 +* CPU: 32-bit 48 MHz
176 +* Flash: 256KB
177 +* RAM: 64KB
178 +* Input Power Range: 1.8v ~~ 3.7v
179 +* Power Consumption: < 4uA.
180 +* Frequency Range: 150 MHz ~~ 960 MHz
181 +* Maximum Power +22 dBm constant RF output
182 +* High sensitivity: -148 dBm
183 +* Temperature:
184 +** Storage: -55 ~~ +125℃
185 +** Operating: -40 ~~ +85℃
186 +* Humidity:
187 +** Storage: 5 ~~ 95% (Non-Condensing)
188 +** Operating: 10 ~~ 95% (Non-Condensing)
189 +* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
190 +* LoRa Rx current: <9 mA
191 +* I/O Voltage: 3.3v
106 106  
107 -(% style="color:blue" %)**3.  See Uplink Command**
193 +== 2.4  LED ==
108 108  
109 -Command format: (% style="color:#4472c4" %)** AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
195 +~1. The LED lights up red when there is an upstream data packet
196 +2. When the network is successfully connected, the green light will be on for 5 seconds
197 +3. Purple light on when receiving downlink data packets
110 110  
111 -example: AT+SENDB=01,02,8,05820802581ea0a5
112 112  
113 -[[image:image-20220602162157-11.png||height="497" width="800"]]
200 +== 2.5  Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
114 114  
115 115  
116 -(% style="color:blue" %)**4.  Check to see if TTN received the message**
203 +**Show connection diagram：**
117 117  
118 -[[image:image-20220817093644-1.png]]
119 119  
206 +[[image:image-20220723170210-2.png||height="908" width="681"]]
120 120  
121 -== 1.6  Example: How to join helium ==
122 122  
123 123  
124 -(% style="color:blue" %)**1.  Create a new device.**
210 +**1.  open Arduino IDE**
125 125  
126 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/WebHome/image-20220907165500-1.png?width=940&height=464&rev=1.1||alt="image-20220907165500-1.png"]]
127 127  
213 +[[image:image-20220723170545-4.png]]
128 128  
129 -(% style="color:blue" %)**2.  Save the device after filling in the necessary information.**
130 130  
131 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/WebHome/image-20220907165837-2.png?width=809&height=375&rev=1.1||alt="image-20220907165837-2.png" height="375" width="809"]]
132 132  
217 +**2.  Open project**
133 133  
134 -(% style="color:blue" %)**3.  Use AT commands.**
135 135  
136 -[[image:image-20220909151441-1.jpeg||height="695" width="521"]]
220 +LA66-LoRaWAN-shield-AT-command-via-Arduino-UNO source code link: [[https:~~/~~/www.dropbox.com/sh/trqitpm9adkupva/AAAE542NzwlHubIAIDxe6IWFa?dl=0>>https://www.dropbox.com/sh/trqitpm9adkupva/AAAE542NzwlHubIAIDxe6IWFa?dl=0]]
137 137  
222 +[[image:image-20220723170750-5.png||height="533" width="930"]]
138 138  
139 -(% style="color:blue" %)**4.  Use the serial port tool**
140 140  
141 -[[image:image-20220909151517-2.png||height="543" width="708"]]
142 142  
226 +**3.  Click the button marked 1 in the figure to compile, and after the compilation is complete, click the button marked 2 in the figure to upload**
143 143  
144 -(% style="color:blue" %)**5.  Use command AT+CFG to get device configuration**
145 145  
146 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/WebHome/image-20220907170308-3.png?width=617&height=556&rev=1.1||alt="image-20220907170308-3.png" height="556" width="617"]]
229 +[[image:image-20220723171228-6.png]]
147 147  
148 148  
149 -(% style="color:blue" %)**6.  Network successfully.**
150 150  
151 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/WebHome/image-20220907170436-4.png?rev=1.1||alt="image-20220907170436-4.png"]]
233 +**4.  After the upload is successful, open the serial port monitoring and send the AT command**
152 152  
153 153  
154 -(% style="color:blue" %)**7.  Send uplink using command**
236 +[[image:image-20220723172235-7.png||height="480" width="1027"]]
155 155  
156 -[[image:image-20220912085244-1.png]]
157 157  
158 -[[image:image-20220912085307-2.png]]
159 159  
240 +== 2.6  Example: Join TTN network and send an uplink message, get downlink message. ==
160 160  
161 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/WebHome/image-20220907170744-6.png?width=798&height=242&rev=1.1||alt="image-20220907170744-6.png" height="242" width="798"]]
162 162  
243 +**1.  Open project**
163 163  
164 -== 1.7  Example: Send PC's CPU/RAM usage to TTN via python ==
165 165  
246 +Join-TTN-network source code link: [[https:~~/~~/www.dropbox.com/sh/trqitpm9adkupva/AAAE542NzwlHubIAIDxe6IWFa?dl=0>>https://www.dropbox.com/sh/trqitpm9adkupva/AAAE542NzwlHubIAIDxe6IWFa?dl=0]]
166 166  
167 -**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]]
248 +[[image:image-20220723172502-8.png]]
168 168  
169 -(**Raspberry Pi example: **[[https:~~/~~/github.com/dragino/LA66/blob/main/Send_information_to_TTN_Raspberry%20Pi.py>>https://github.com/dragino/LA66/blob/main/Send_information_to_TTN_Raspberry%20Pi.py]])
170 170  
171 171  
172 -(% style="color:red" %)**Preconditions:**
252 +2.  Same steps as 2.5,after opening the serial port monitoring, it will automatically connect to the network and send packets
173 173  
174 -(% style="color:red" %)**1. LA66 USB LoRaWAN Adapter works fine**
175 175  
176 -(% style="color:red" %)**2. LA66 USB LoRaWAN Adapter  is registered with TTN**
255 +[[image:image-20220723172938-9.png||height="652" width="1050"]]
177 177  
178 178  
179 -(% style="color:blue" %)**Steps for usage:**
180 180  
181 -(% style="color:blue" %)**1.**(%%) Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
259 +== 2.7  Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in Node-RED. ==
182 182  
183 -(% style="color:blue" %)**2.**(%%) Add [[decoder>>https://github.com/dragino/dragino-end-node-decoder/tree/main/LA66%20USB]] on TTN
184 184  
185 -(% style="color:blue" %)**3.**(%%) Run the python script in PC and see the TTN
262 +**1.  Open project**
186 186  
187 187  
188 -[[image:image-20220602115852-3.png||height="450" width="1187"]]
265 +Log-Temperature-Sensor-and-send-data-to-TTN source code link: [[https:~~/~~/www.dropbox.com/sh/trqitpm9adkupva/AAAE542NzwlHubIAIDxe6IWFa?dl=0>>https://www.dropbox.com/sh/trqitpm9adkupva/AAAE542NzwlHubIAIDxe6IWFa?dl=0]]
189 189  
190 190  
191 -== 1.8  Example: Send & Get Messages via LoRaWAN in RPi ==
268 +[[image:image-20220723173341-10.png||height="581" width="1014"]]
192 192  
193 193  
194 -Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
195 195  
196 -(% style="color:blue" %)**1.  Connect the LA66 USB LoRaWAN Adapter to the Raspberry Pi**
272 +**2.  Same steps as 2.5,after opening the serial port monitoring, it will automatically connect to the network and send packets**
197 197  
198 -[[image:image-20220723100439-2.png]]
199 199  
275 +[[image:image-20220723173950-11.png||height="665" width="1012"]]
200 200  
201 -(% style="color:blue" %)**2.  Install Minicom in RPi.**
202 202  
203 -(% id="cke_bm_509388S" style="display:none" %) (%%)Enter the following command in the RPi terminal
204 204  
205 - (% style="background-color:yellow" %)**apt update**
279 +**3.  Integration into Node-red via TTNV3**
206 206  
207 - (% style="background-color:yellow" %)**apt install minicom**
281 +For the usage of Node-RED, please refer to: [[http:~~/~~/8.211.40.43:8080/xwiki/bin/view/Main/Node-RED/>>http://8.211.40.43:8080/xwiki/bin/view/Main/Node-RED/]]
208 208  
209 -Use minicom to connect to the RPI's terminal
283 +[[image:image-20220723175700-12.png||height="602" width="995"]]
210 210  
211 -[[image:image-20220602153146-3.png||height="439" width="500"]]
212 212  
213 213  
214 -(% style="color:blue" %)**3.  Press the reset switch RST on the LA66 USB LoRaWAN Adapter.**
287 +== 2.8  Upgrade Firmware of LA66 LoRaWAN Shield ==
215 215  
216 -The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully entered the network.
217 217  
218 -[[image:image-20220602154928-5.png||height="436" width="500"]]
290 +=== 2.8.1  Items needed for update ===
219 219  
220 220  
221 -(% style="color:blue" %)**4.  Send Uplink message**
293 +1. LA66 LoRaWAN Shield
294 +1. Arduino
295 +1. USB TO TTL Adapter
222 222  
223 -Format: (% style="color:#4472c4" %)**AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
297 +[[image:image-20220602100052-2.png||height="385" width="600"]]
224 224  
225 -example: AT+SENDB=01,02,8,05820802581ea0a5
226 226  
227 -[[image:image-20220602160339-6.png||height="517" width="600"]]
300 +=== 2.8.2  Connection ===
228 228  
229 229  
230 -Check to see if TTN received the message
303 +[[image:image-20220602101311-3.png||height="276" width="600"]]
231 231  
232 232  
233 -[[image:image-20220602160627-7.png||height="369" width="800"]]
306 +(((
307 +(% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  **<->** (% style="color:blue" %)**USB TTL**
308 +)))
234 234  
310 +(((
311 +(% style="background-color:yellow" %)**GND  <-> GND
312 +TXD  <->  TXD
313 +RXD  <->  RXD**
314 +)))
235 235  
236 -== 1.9  Example: Use of LA66 USB LoRaWAN Adapter and mobile APP ==
237 237  
238 -=== 1.9.1  Hardware and Software Connection ===
317 +Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module)
239 239  
319 +Connect USB TTL Adapter to PC after connecting the wires
240 240  
241 -(% class="wikigeneratedid" id="HOverviewFF1A" %)
242 -(% style="color:blue" %)**Overview：**
243 243  
322 +[[image:image-20220602102240-4.png||height="304" width="600"]]
323 +
324 +
325 +=== 2.8.3  Upgrade steps ===
326 +
327 +
328 +==== (% style="color:blue" %)1.  Switch SW1 to put in ISP position(%%) ====
329 +
330 +
331 +[[image:image-20220602102824-5.png||height="306" width="600"]]
332 +
333 +
334 +
335 +==== (% style="color:blue" %)2.  Press the RST switch once(%%) ====
336 +
337 +
338 +[[image:image-20220602104701-12.png||height="285" width="600"]]
339 +
340 +
341 +
342 +==== (% style="color:blue" %)3.  Open the Upgrade tool (Tremo Programmer) in PC and Upgrade(%%) ====
343 +
344 +
244 244  (((
245 -DRAGINO-LA66-APP is an Open Source mobile APP for LA66 USB LoRaWAN Adapter. DRAGINO-LA66-APP has below features:
346 +(% 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/]]**
347 +)))
246 246  
247 -* Send real-time location information of mobile phone to LoRaWAN network.
248 -* Check LoRaWAN network signal strengh.
249 -* Manually send messages to LoRaWAN network.
349 +
350 +[[image:image-20220602103227-6.png]]
351 +
352 +
353 +[[image:image-20220602103357-7.png]]
354 +
355 +
356 +
357 +(% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %)
358 +(% style="color:blue" %)**2. Select the COM port corresponding to USB TTL**
359 +
360 +
361 +[[image:image-20220602103844-8.png]]
362 +
363 +
364 +
365 +(% class="wikigeneratedid" id="HSelectthebinfiletoburn" %)
366 +(% style="color:blue" %)**3. Select the bin file to burn**
367 +
368 +
369 +[[image:image-20220602104144-9.png]]
370 +
371 +
372 +[[image:image-20220602104251-10.png]]
373 +
374 +
375 +[[image:image-20220602104402-11.png]]
376 +
377 +
378 +
379 +(% class="wikigeneratedid" id="HClicktostartthedownload" %)
380 +(% style="color:blue" %)**4. Click to start the download**
381 +
382 +[[image:image-20220602104923-13.png]]
383 +
384 +
385 +
386 +(% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %)
387 +(% style="color:blue" %)**5. Check update process**
388 +
389 +
390 +[[image:image-20220602104948-14.png]]
391 +
392 +
393 +
394 +(% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %)
395 +(% style="color:blue" %)**The following picture shows that the burning is successful**
396 +
397 +[[image:image-20220602105251-15.png]]
398 +
399 +
400 +
401 += 3.  LA66 USB LoRaWAN Adapter =
402 +
403 +
404 +== 3.1  Overview ==
405 +
406 +
407 +[[image:image-20220715001142-3.png||height="145" width="220"]]
408 +
409 +
410 +(((
411 +(% style="color:blue" %)**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.
250 250  )))
251 251  
414 +(((
415 +(% 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.
416 +)))
252 252  
418 +(((
419 +Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
420 +)))
253 253  
254 -(% class="wikigeneratedid" id="HHardwareConnection:" %)
255 -(% style="color:blue" %)**Hardware Connection:**
422 +(((
423 +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.
424 +)))
256 256  
257 -A USB to Type-C adapter is needed to connect to a Mobile phone.
426 +(((
427 +LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
428 +)))
258 258  
259 -Note: The package of LA66 USB adapter already includes this USB Type-C adapter.
260 260  
261 -[[image:image-20220813174353-2.png||height="360" width="313"]]
262 262  
432 +== 3.2  Features ==
263 263  
264 -(% class="wikigeneratedid" id="HDownloadandInstallApp:" %)
265 -(% style="color:blue" %)**Download and Install App:**
434 +* LoRaWAN USB adapter base on LA66 LoRaWAN module
435 +* Ultra-long RF range
436 +* Support LoRaWAN v1.0.4 protocol
437 +* Support peer-to-peer protocol
438 +* TCXO crystal to ensure RF performance on low temperature
439 +* Spring RF antenna
440 +* Available in different frequency LoRaWAN frequency bands.
441 +* World-wide unique OTAA keys.
442 +* AT Command via UART-TTL interface
443 +* Firmware upgradable via UART interface
444 +* Open Source Mobile App for LoRaWAN signal detect and GPS tracking.
266 266  
267 -[[(% id="cke_bm_895007S" style="display:none" %)** **(%%)**Download Link for Android apk **>>https://www.dropbox.com/sh/zxwx16qb777uvkz/AABE_P8coGCQ4DAC8enH4bUya?dl=0]].  (Android Version Only)
268 268  
269 -[[image:image-20220813173738-1.png]]
270 270  
448 +== 3.3  Specification ==
271 271  
272 -(% class="wikigeneratedid" id="HUseofAPP:" %)
273 -(% style="color:blue" %)**Use of APP:**
450 +* CPU: 32-bit 48 MHz
451 +* Flash: 256KB
452 +* RAM: 64KB
453 +* Input Power Range: 5v
454 +* Frequency Range: 150 MHz ~~ 960 MHz
455 +* Maximum Power +22 dBm constant RF output
456 +* High sensitivity: -148 dBm
457 +* Temperature:
458 +** Storage: -55 ~~ +125℃
459 +** Operating: -40 ~~ +85℃
460 +* Humidity:
461 +** Storage: 5 ~~ 95% (Non-Condensing)
462 +** Operating: 10 ~~ 95% (Non-Condensing)
463 +* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
464 +* LoRa Rx current: <9 mA
274 274  
275 -Function and page introduction:
276 276  
277 -[[image:image-20220723113448-7.png||height="995" width="450"]]
278 278  
468 +== 3.4  Pin Mapping & LED ==
279 279  
280 -(% style="color:blue" %)**Block Explain:**
281 281  
282 -1.  Display LA66 USB LoRaWAN Module connection status
283 283  
284 -2.  Check and reconnect
472 +== 3.5  Example: Send & Get Messages via LoRaWAN in PC ==
285 285  
286 -3.  Turn send timestamps on or off
287 287  
288 -4.  Display LoRaWan connection status
475 +(((
476 +Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
477 +)))
289 289  
290 -5.  Check LoRaWan connection status
291 291  
292 -6.  The RSSI value of the node when the ACK is received
480 +(% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN adapter to PC**
293 293  
294 -7.  Node's Signal Strength Icon
295 295  
296 -8.  Configure Location Uplink Interval
483 +[[image:image-20220723100027-1.png]]
297 297  
298 -9.  AT command input box
299 299  
300 -10.  Send Button:  Send input box info to LA66 USB Adapter
486 +Open the serial port tool
301 301  
302 -11.  Output Log from LA66 USB adapter
488 +[[image:image-20220602161617-8.png]]
303 303  
304 -12.  clear log button
490 +[[image:image-20220602161718-9.png||height="457" width="800"]]
305 305  
306 -13.  exit button
307 307  
308 308  
309 -LA66 USB LoRaWAN Module not connected:
494 +(% style="color:blue" %)**2. Press the reset switch RST on the LA66 USB LoRaWAN Adapter to reset it.**
310 310  
311 -[[image:image-20220723110520-5.png||height="677" width="508"]]
496 +The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully Join the LoRaWAN network
312 312  
313 313  
314 -Connect LA66 USB LoRaWAN Module:
499 +[[image:image-20220602161935-10.png||height="498" width="800"]]
315 315  
316 -[[image:image-20220723110626-6.png||height="681" width="511"]]
317 317  
318 318  
319 -=== 1.9.2  Send data to TTNv3 and plot location info in Node-Red ===
503 +(% style="color:blue" %)**3. See Uplink Command**
320 320  
505 +Command format: (% style="color:#4472c4" %)** AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
321 321  
322 -(% style="color:blue" %)**1.  Register LA66 USB LoRaWAN Module to TTNV3**
507 +example: AT+SENDB=01,02,8,05820802581ea0a5
323 323  
509 +[[image:image-20220602162157-11.png||height="497" width="800"]]
324 324  
325 -[[image:image-20220723134549-8.png]]
326 326  
327 327  
513 +(% style="color:blue" %)**4. Check to see if TTN received the message**
328 328  
329 -(% style="color:blue" %)**2.  Open Node-RED,And import the JSON file to generate the flow**
515 +[[image:image-20220602162331-12.png||height="420" width="800"]]
330 330  
331 331  
332 -Sample JSON file please go to **[[this link>>https://www.dropbox.com/sh/zxwx16qb777uvkz/AABE_P8coGCQ4DAC8enH4bUya?dl=0]]** to download.
333 333  
334 -For the usage of Node-RED, please refer to: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Node-RED/>>http://wiki.dragino.com/xwiki/bin/view/Main/Node-RED/]]
519 +== 3.6  Example: Send PC's CPU/RAM usage to TTN via python ==
335 335  
336 -After see LoRaWAN Online, walk around and the APP will keep sending location info to LoRaWAN server and then to the Node Red.
337 337  
338 -LA66~-~-node-red~-~-decoder:[[dragino-end-node-decoder/Node-RED at main · dragino/dragino-end-node-decoder · GitHub>>url:https://github.com/dragino/dragino-end-node-decoder/tree/main/Node-RED]]
522 +**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]]
339 339  
524 +(**Raspberry Pi example: **[[https:~~/~~/github.com/dragino/LA66/blob/main/Send_information_to_TTN_Raspberry%20Pi.py>>https://github.com/dragino/LA66/blob/main/Send_information_to_TTN_Raspberry%20Pi.py]])
340 340  
341 -Example output in NodeRed is as below:
526 +(% style="color:red" %)**Preconditions:**
342 342  
343 -[[image:image-20220723144339-1.png]]
528 +(% style="color:red" %)**1. LA66 USB LoRaWAN Adapter works fine**
344 344  
530 +(% style="color:red" %)**2. LA66 USB LoRaWAN Adapter  is registered with TTN**
345 345  
346 -== 1.10  Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
347 347  
348 -=== 1.10.1 LA66V1 Update method ===
349 349  
350 -The LA66 USB LoRaWAN Adapter is the same as the LA66 LoRaWAN Shield update method.
534 +(% style="color:blue" %)**Steps for usage:**
351 351  
352 -Just use the yellow jumper cap to short the BOOT corner and the RX corner, and then press the RESET button (without the jumper cap, you can directly short the BOOT corner and the RX corner with a wire to achieve the same effect).
536 +(% style="color:blue" %)**1.**(%%) Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
353 353  
354 -(% style="color:red" %)**Notice: If upgrade via USB hub is not sucessful. try to connect to PC directly.**
538 +(% style="color:blue" %)**2.**(%%) Run the python script in PC and see the TTN
355 355  
356 -[[image:image-20220723150132-2.png||height="514" width="506"]]
540 +[[image:image-20220602115852-3.png||height="450" width="1187"]]
357 357  
358 358  
359 -(% class="wikigeneratedid" id="HOpentheUpgradetool28TremoProgrammer29inPCandUpgrade" %)
360 -(% style="color:blue" %)**Open the Upgrade tool (Tremo Programmer) in PC and Upgrade**
361 361  
362 -**1.  Software download link:  [[https:~~/~~/www.dropbox.com/sh/j0qyc7a9ejit7jk/AACtx2tK4gEv6YFXMIVUM4dLa?dl=0>>url:https://www.dropbox.com/sh/j0qyc7a9ejit7jk/AACtx2tK4gEv6YFXMIVUM4dLa?dl=0]]**
544 +== 3.7  Example: Send & Get Messages via LoRaWAN in RPi ==
363 363  
364 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/WebHome/image-20220602103227-6.png?rev=1.1||alt="image-20220602103227-6.png"]]
365 365  
366 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/WebHome/image-20220602103357-7.png?rev=1.1||alt="image-20220602103357-7.png" height="486" width="390"]]
547 +Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
367 367  
368 368  
369 -**2.  Select the COM port corresponding to USB TTL**
550 +(% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN Adapter to the Raspberry Pi**
370 370  
371 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/WebHome/image-20220602103844-8.png?rev=1.1||alt="image-20220602103844-8.png" height="291" width="389"]]
552 +[[image:image-20220723100439-2.png]]
372 372  
373 373  
374 -**3.  Select the bin file to burn**
375 375  
376 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/WebHome/image-20220602104144-9.png?rev=1.1||alt="image-20220602104144-9.png" height="318" width="405"]]
556 +(% style="color:blue" %)**2. Install Minicom in RPi.**
377 377  
378 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/WebHome/image-20220602104251-10.png?rev=1.1||alt="image-20220602104251-10.png" height="330" width="579"]]
558 +(% id="cke_bm_509388S" style="display:none" %) (%%)Enter the following command in the RPi terminal
379 379  
380 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/WebHome/image-20220602104402-11.png?rev=1.1||alt="image-20220602104402-11.png" height="290" width="372"]]
560 + (% style="background-color:yellow" %)**apt update**
381 381  
562 + (% style="background-color:yellow" %)**apt install minicom**
382 382  
383 -**4.  Click to start the download**
384 384  
385 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/WebHome/image-20220602104923-13.png?rev=1.1||alt="image-20220602104923-13.png" height="462" width="372"]]
565 +Use minicom to connect to the RPI's terminal
386 386  
567 +[[image:image-20220602153146-3.png||height="439" width="500"]]
387 387  
388 -**5.  Check update process**
389 389  
390 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/WebHome/image-20220602104948-14.png?rev=1.1||alt="image-20220602104948-14.png" height="483" width="386"]]
391 391  
571 +(% style="color:blue" %)**3. Press the reset switch RST on the LA66 USB LoRaWAN Adapter.**
392 392  
393 -**The following picture shows that the burning is successful**
573 +The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully entered the network.
394 394  
395 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/WebHome/image-20220602105251-15.png?rev=1.1||alt="image-20220602105251-15.png" height="513" width="406"]]
396 396  
397 -=== 1.10.2 LA66V2 Update method ===
576 +[[image:image-20220602154928-5.png||height="436" width="500"]]
398 398  
399 -Please refer to this link
400 400  
401 -[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H3.2.1UpdateafirmwareviaDraginoSensorManagerUtility.exe>>http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H3.2.1UpdateafirmwareviaDraginoSensorManagerUtility.exe]]
402 402  
580 +(% style="color:blue" %)**4. Send Uplink message**
403 403  
404 -= 2.  FAQ =
582 +Format: (% style="color:#4472c4" %)**AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
405 405  
406 -== 2.1  How to Compile Source Code for LA66? ==
584 +example: AT+SENDB=01,02,8,05820802581ea0a5
407 407  
408 408  
409 -Compile and Upload Code to ASR6601 Platform ：[[Instruction>>Main.User Manual for LoRaWAN End Nodes.LA66 LoRaWAN Module.Compile and Upload Code to ASR6601 Platform.WebHome]]
587 +[[image:image-20220602160339-6.png||height="517" width="600"]]
410 410  
411 411  
412 -== 2.2  Where to find Peer-to-Peer firmware of LA66? ==
413 413  
591 +Check to see if TTN received the message
414 414  
415 -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]]
593 +[[image:image-20220602160627-7.png||height="369" width="800"]]
416 416  
417 417  
418 -== 2.3 My device keeps showing invalid credentials, the device goes into low power mode ==
419 419  
597 +== 3.8  Example: Use of LA66 USB LoRaWAN Adapter and APP sample process and DRAGINO-LA66-APP. ==
420 420  
421 -Set the AT+COMMAND: (% style="color:blue" %)**AT+UUID=666666666666**
422 422  
600 +=== 3.8.1 DRAGINO-LA66-APP ===
423 423  
424 -== 2.4 How to use external antenna via ipex connector? ==
425 425  
603 +[[image:image-20220723102027-3.png]]
426 426  
427 -You need to remove the spring antenna first, and also remove the resistor and capacitor.
428 -Connect external antenna.
429 429  
430 -[[image:image-20231129155939-1.png||height="529" width="397"]]
431 431  
607 +==== (% style="color:blue" %)**Overview：**(%%) ====
432 432  
433 -= 3.  Order Info =
434 434  
610 +DRAGINO-LA66-APP is a mobile APP for LA66 USB LoRaWAN Adapter and APP sample process. DRAGINO-LA66-APP can obtain the positioning information of the mobile phone and send it to the LoRaWAN platform through the LA66 USB LoRaWAN Adapter.
435 435  
436 -**Part Number:**  (% style="color:blue" %)**LA66-USB-LoRaWAN-Adapter-XXX**
612 +View the communication signal strength between the node and the gateway through the RSSI value（DRAGINO-LA66-APP currently only supports Android system）
437 437  
438 438  
439 -(% style="color:blue" %)**XXX**(%%): The default frequency band
440 440  
441 -* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
442 -* (% style="color:red" %)**AU915**(%%):  LoRaWAN AU915 band
443 -* (% style="color:red" %)**EU433**(%%):  LoRaWAN EU433 band
444 -* (% style="color:red" %)**EU868**(%%):  LoRaWAN EU868 band
445 -* (% style="color:red" %)**KR920**(%%):  LoRaWAN KR920 band
446 -* (% style="color:red" %)**US915**(%%):  LoRaWAN US915 band
447 -* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
448 -* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
449 -* (% style="color:red" %)**PP**(%%):  Peer to Peer LoRa Protocol
616 +==== (% style="color:blue" %)**Conditions of Use：**(%%) ====
450 450  
451 -= 4.  Reference =
452 452  
619 +Requires a type-c to USB adapter
453 453  
454 -* Hardware Design File for LA66 USB LoRaWAN Adapter : [[Download>>https://www.dropbox.com/sh/a3wbmdcvqjxaqw5/AADZfvAiykJTK624RgMquH86a?dl=0]]
455 -* Mobile Phone App Source Code: [[Download>>https://github.com/dragino/LA66_Mobile_App]].
621 +[[image:image-20220723104754-4.png]]
456 456  
457 -= 5.  FCC Statement =
458 458  
459 459  
460 -(% style="color:red" %)**FCC Caution:**
625 +==== (% style="color:blue" %)**Use of APP:**(%%) ====
461 461  
462 -Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
463 463  
464 -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.
628 +Function and page introduction
465 465  
630 +[[image:image-20220723113448-7.png||height="1481" width="670"]]
466 466  
467 -(% style="color:red" %)**IMPORTANT NOTE: **
632 +1.Display LA66 USB LoRaWAN Module connection status
468 468  
469 -(% 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:
634 +2.Check and reconnect
470 470  
471 -—Reorient or relocate the receiving antenna.
636 +3.Turn send timestamps on or off
472 472  
473 -—Increase the separation between the equipment and receiver.
638 +4.Display LoRaWan connection status
474 474  
475 -—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
640 +5.Check LoRaWan connection status
476 476  
477 -—Consult the dealer or an experienced radio/TV technician for help.
642 +6.The RSSI value of the node when the ACK is received
478 478  
644 +7.Node's Signal Strength Icon
479 479  
480 -(% style="color:red" %)**FCC Radiation Exposure Statement: **
646 +8.Set the packet sending interval of the node in seconds
481 481  
482 -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.
648 +9.AT command input box
483 483  
484 -
650 +10.Send AT command button
651 +
652 +11.Node log box
653 +
654 +12.clear log button
655 +
656 +13.exit button
657 +
658 +
659 +LA66 USB LoRaWAN Module not connected
660 +
661 +[[image:image-20220723110520-5.png||height="903" width="677"]]
662 +
663 +
664 +
665 +Connect LA66 USB LoRaWAN Module
666 +
667 +[[image:image-20220723110626-6.png||height="906" width="680"]]
668 +
669 +
670 +
671 +=== 3.8.2 Use DRAGINO-LA66-APP to obtain positioning information and send it to TTNV3 through LA66 USB LoRaWAN Adapter and integrate it into Node-RED ===
672 +
673 +
674 +**1.  Register LA66 USB LoRaWAN Module to TTNV3**
675 +
676 +[[image:image-20220723134549-8.png]]
677 +
678 +
679 +
680 +**2.  Open Node-RED,And import the JSON file to generate the flow**
681 +
682 +Sample JSON file please go to this link to download：放置JSON文件的链接
683 +
684 +For the usage of Node-RED, please refer to: [[http:~~/~~/8.211.40.43:8080/xwiki/bin/view/Main/Node-RED/>>http://8.211.40.43:8080/xwiki/bin/view/Main/Node-RED/]]
685 +
686 +The following is the positioning effect map
687 +
688 +[[image:image-20220723144339-1.png]]
689 +
690 +
691 +
692 +== 3.9  Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
693 +
694 +
695 +The LA66 USB LoRaWAN Adapter is the same as the LA66 LoRaWAN Shield update method
696 +
697 +Just use the yellow jumper cap to short the BOOT corner and the RX corner, and then press the RESET button (without the jumper cap, you can directly short the BOOT corner and the RX corner with a wire to achieve the same effect)
698 +
699 +[[image:image-20220723150132-2.png]]
700 +
701 +
702 +
703 += 4.  Order Info =
704 +
705 +
706 +**Part Number:**  (% style="color:blue" %)**LA66-XXX**(%%), (% style="color:blue" %)**LA66-LoRaWAN-Shield-XXX** (%%) **or**  (% style="color:blue" %)**LA66-USB-LoRaWAN-Adapter-XXX**
707 +
708 +
709 +(% style="color:blue" %)**XXX**(%%): The default frequency band
710 +
711 +* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
712 +* (% style="color:red" %)**AU915**(%%):  LoRaWAN AU915 band
713 +* (% style="color:red" %)**EU433**(%%):  LoRaWAN EU433 band
714 +* (% style="color:red" %)**EU868**(%%):  LoRaWAN EU868 band
715 +* (% style="color:red" %)**KR920**(%%):  LoRaWAN KR920 band
716 +* (% style="color:red" %)**US915**(%%):  LoRaWAN US915 band
717 +* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
718 +* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
719 +* (% style="color:red" %)**PP**(%%):  Peer to Peer LoRa Protocol
720 +
721 +
722 += 5.  Reference =
723 +
724 +
725 +* Hardware Design File for LA66 LoRaWAN Shield, LA66 USB LoRaWAN Adapter : [[Download>>https://www.dropbox.com/sh/a3wbmdcvqjxaqw5/AADZfvAiykJTK624RgMquH86a?dl=0]]
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