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Last modified by Xiaoling on 2023/05/26 14:19
From version 166.1
edited by Edwin Chen
on 2022/11/09 15:19
Change comment: There is no comment for this version
To version 71.1
edited by Edwin Chen
on 2022/07/03 00:00
Change comment: There is no comment for this version

Summary

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Title
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1 -LA66 LoRaWAN Shield User Manual
1 +LA66 LoRaWAN Module
Content
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1 -
2 -
3 -**Table of Contents:**
4 -
1 +{{box cssClass="floatinginfobox" title="**Contents**"}}
5 5  {{toc/}}
3 +{{/box}}
6 6  
5 += LA66 LoRaWAN Module =
7 7  
7 +== What is LA66 LoRaWAN Module ==
8 8  
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.
9 9  
10 -= 1.  LA66 LoRaWAN Shield =
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.
11 11  
12 -
13 -== 1.1  Overview ==
14 -
15 -
16 -(((
17 -[[image:image-20220715000826-2.png||height="145" width="220"]]
18 -)))
19 -
20 -(((
21 -
22 -)))
23 -
24 -(((
25 -(% 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.
26 -)))
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 -)))
33 -
34 -(((
35 -(((
36 36  Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
37 -)))
38 -)))
39 39  
40 -(((
41 -(((
42 42  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.
43 -)))
44 -)))
45 45  
46 -(((
47 -(((
48 48  LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
49 -)))
50 -)))
51 51  
52 52  
20 +== Features ==
53 53  
54 -== 1.2  Features ==
55 -
56 -
57 -* Arduino Shield base on LA66 LoRaWAN module
58 -* Support LoRaWAN v1.0.3 protocol
22 +* Support LoRaWAN v1.0.4 protocol
59 59  * Support peer-to-peer protocol
60 60  * TCXO crystal to ensure RF performance on low temperature
61 -* SMA connector
25 +* SMD Antenna pad and i-pex antenna connector
62 62  * Available in different frequency LoRaWAN frequency bands.
63 63  * World-wide unique OTAA keys.
64 64  * AT Command via UART-TTL interface
... ... @@ -66,9 +66,8 @@
66 66  * Ultra-long RF range
67 67  
68 68  
69 -== 1.3  Specification ==
33 +== Specification ==
70 70  
71 -
72 72  * CPU: 32-bit 48 MHz
73 73  * Flash: 256KB
74 74  * RAM: 64KB
... ... @@ -87,354 +87,261 @@
87 87  * LoRa Rx current: <9 mA
88 88  * I/O Voltage: 3.3v
89 89  
53 +== AT Command ==
90 90  
91 -== 1.4  Pin Mapping & LED ==
55 +AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents.
92 92  
93 93  
94 -[[image:image-20220817085048-1.png||height="533" width="734"]]
58 +== Dimension ==
95 95  
60 +[[image:image-20220517072526-1.png]]
96 96  
97 97  
98 -~1. The LED lights up red when there is an upstream data packet
99 -2. When the network is successfully connected, the green light will be on for 5 seconds
100 -3. Purple light on when receiving downlink data packets
63 +== Pin Mapping ==
101 101  
65 +[[image:image-20220523101537-1.png]]
102 102  
103 -[[image:image-20220820112305-1.png||height="515" width="749"]]
67 +== Land Pattern ==
104 104  
69 +[[image:image-20220517072821-2.png]]
105 105  
106 106  
107 -== 1.5  Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
72 +== Part Number ==
108 108  
74 +Part Number: **LA66-XXX**
109 109  
110 -**Show connection diagram：**
76 +**XX**: The default frequency band
111 111  
78 +* **AS923**: LoRaWAN AS923 band
79 +* **AU915**: LoRaWAN AU915 band
80 +* **EU433**: LoRaWAN EU433 band
81 +* **EU868**: LoRaWAN EU868 band
82 +* **KR920**: LoRaWAN KR920 band
83 +* **US915**: LoRaWAN US915 band
84 +* **IN865**: LoRaWAN IN865 band
85 +* **CN470**: LoRaWAN CN470 band
86 +* **PP**: Peer to Peer LoRa Protocol
112 112  
113 -[[image:image-20220723170210-2.png||height="908" width="681"]]
114 114  
115 115  
90 += LA66 LoRaWAN Shield =
116 116  
117 -(% style="color:blue" %)**1.  open Arduino IDE**
92 +== Overview ==
118 118  
94 +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.
119 119  
120 -[[image:image-20220723170545-4.png]]
121 121  
97 +== Features ==
122 122  
99 +* Arduino Shield base on LA66 LoRaWAN module
100 +* Support LoRaWAN v1.0.4 protocol
101 +* Support peer-to-peer protocol
102 +* TCXO crystal to ensure RF performance on low temperature
103 +* SMA connector
104 +* Available in different frequency LoRaWAN frequency bands.
105 +* World-wide unique OTAA keys.
106 +* AT Command via UART-TTL interface
107 +* Firmware upgradable via UART interface
108 +* Ultra-long RF range
123 123  
124 -(% style="color:blue" %)**2.  Open project**
125 125  
111 +== Specification ==
126 126  
127 -LA66-LoRaWAN-shield-AT-command-via-Arduino-UNO source code link: [[https:~~/~~/www.dropbox.com/sh/hgtycj0go4tka2r/AAACRRIRriMAudB2m3ThH7Sba?dl=0 >>https://www.dropbox.com/sh/hgtycj0go4tka2r/AAACRRIRriMAudB2m3ThH7Sba?dl=0]]
113 +* CPU: 32-bit 48 MHz
114 +* Flash: 256KB
115 +* RAM: 64KB
116 +* Input Power Range: 1.8v ~~ 3.7v
117 +* Power Consumption: < 4uA.
118 +* Frequency Range: 150 MHz ~~ 960 MHz
119 +* Maximum Power +22 dBm constant RF output
120 +* High sensitivity: -148 dBm
121 +* Temperature:
122 +** Storage: -55 ~~ +125℃
123 +** Operating: -40 ~~ +85℃
124 +* Humidity:
125 +** Storage: 5 ~~ 95% (Non-Condensing)
126 +** Operating: 10 ~~ 95% (Non-Condensing)
127 +* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
128 +* LoRa Rx current: <9 mA
129 +* I/O Voltage: 3.3v
128 128  
129 -[[image:image-20220726135239-1.png]]
130 130  
132 +== Pin Mapping & LED ==
131 131  
134 +== Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
132 132  
133 -(% style="color:blue" %)**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**
136 +== Example: Join TTN network and send an uplink message, get downlink message. ==
134 134  
138 +== Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
135 135  
136 -[[image:image-20220726135356-2.png]]
140 +== Upgrade Firmware of LA66 LoRaWAN Shield ==
137 137  
142 +=== what needs to be used ===
138 138  
144 +1.LA66 LoRaWAN Shield that needs to be upgraded
139 139  
140 -(% style="color:blue" %)**4.  After the upload is successful, open the serial port monitoring and send the AT command**
146 +2.Arduino
141 141  
148 +3.USB TO TTL
142 142  
143 -[[image:image-20220723172235-7.png||height="480" width="1027"]]
150 +[[image:image-20220602100052-2.png]]
144 144  
152 +=== Wiring Schematic ===
145 145  
154 +[[image:image-20220602101311-3.png]]
146 146  
147 -== 1.6  Example: Join TTN network and send an uplink message, get downlink message. ==
156 +LA66 LoRaWAN Shield  >>>>>>>>>>>>USB TTL
148 148  
158 +GND  >>>>>>>>>>>>GND
149 149  
150 -(% style="color:blue" %)**1.  Open project**
160 +TXD  >>>>>>>>>>>>TXD
151 151  
162 +RXD  >>>>>>>>>>>>RXD
152 152  
153 -Join-TTN-network source code link: [[https:~~/~~/www.dropbox.com/sh/hgtycj0go4tka2r/AAACRRIRriMAudB2m3ThH7Sba?dl=0 >>https://www.dropbox.com/sh/hgtycj0go4tka2r/AAACRRIRriMAudB2m3ThH7Sba?dl=0]]
164 +JP6 of LA66 LoRaWAN Shield needs to be connected with yellow jumper cap
154 154  
166 +Connect to the PC after connecting the wires
155 155  
156 -[[image:image-20220723172502-8.png]]
168 +[[image:image-20220602102240-4.png]]
157 157  
170 +=== Upgrade steps ===
158 158  
172 +==== Dial the SW1 of the LA66 LoRaWAN Shield to the ISP's location as shown in the figure below ====
159 159  
160 -(% style="color:blue" %)**2.  Same steps as 1.5,after opening the serial port monitoring, it will automatically connect to the network and send packets**
174 +[[image:image-20220602102824-5.png]]
161 161  
176 +==== Press the RST switch on the LA66 LoRaWAN Shield once ====
162 162  
163 -[[image:image-20220723172938-9.png||height="652" width="1050"]]
178 +[[image:image-20220602104701-12.png]]
164 164  
180 +==== Open the upgrade application software ====
165 165  
182 +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/]]
166 166  
167 -== 1.7  Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in Node-RED. ==
168 -
169 -
170 -(% style="color:blue" %)**1.  Open project**
171 -
172 -
173 -Log-Temperature-Sensor-and-send-data-to-TTN source code link: [[https:~~/~~/www.dropbox.com/sh/hgtycj0go4tka2r/AAACRRIRriMAudB2m3ThH7Sba?dl=0>>https://www.dropbox.com/sh/hgtycj0go4tka2r/AAACRRIRriMAudB2m3ThH7Sba?dl=0]]
174 -
175 -
176 -[[image:image-20220723173341-10.png||height="581" width="1014"]]
177 -
178 -
179 -
180 -(% style="color:blue" %)**2.  Same steps as 2.5,after opening the serial port monitoring, it will automatically connect to the network and send packets**
181 -
182 -
183 -[[image:image-20220723173950-11.png||height="665" width="1012"]]
184 -
185 -
186 -
187 -
188 -
189 -(% style="color:blue" %)**3.  Integration into Node-red via TTNV3**
190 -
191 -
192 -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/]]
193 -
194 -
195 -[[image:image-20220723175700-12.png||height="602" width="995"]]
196 -
197 -
198 -
199 -== 1.8  Example: How to join helium ==
200 -
201 -
202 -(% style="color:blue" %)**1.  Create a new device.**
203 -
204 -
205 -[[image:image-20220907165500-1.png||height="464" width="940"]]
206 -
207 -
208 -
209 -(% style="color:blue" %)**2.  Save the device after filling in the necessary information.**
210 -
211 -
212 -[[image:image-20220907165837-2.png||height="375" width="809"]]
213 -
214 -
215 -
216 -(% style="color:blue" %)**3.  Use AT commands.**
217 -
218 -
219 -[[image:image-20220602100052-2.png||height="385" width="600"]]
220 -
221 -
222 -
223 -(% style="color:#0000ff" %)**4.  Use command AT+CFG to get device configuration**
224 -
225 -
226 -[[image:image-20220907170308-3.png||height="556" width="617"]]
227 -
228 -
229 -
230 -(% style="color:blue" %)**5.  Network successfully.**
231 -
232 -
233 -[[image:image-20220907170436-4.png]]
234 -
235 -
236 -
237 -(% style="color:blue" %)**6.  Send uplink using command**
238 -
239 -
240 -[[image:image-20220912084334-1.png]]
241 -
242 -
243 -[[image:image-20220912084412-3.png]]
244 -
245 -
246 -
247 -[[image:image-20220907170744-6.png||height="242" width="798"]]
248 -
249 -
250 -
251 -== 1.9  Upgrade Firmware of LA66 LoRaWAN Shield ==
252 -
253 -
254 -=== 1.9.1  Items needed for update ===
255 -
256 -
257 -1. LA66 LoRaWAN Shield
258 -1. Arduino
259 -1. USB TO TTL Adapter
260 -
261 -[[image:image-20220602100052-2.png||height="385" width="600"]]
262 -
263 -
264 -
265 -=== 1.9.2  Connection ===
266 -
267 -
268 -[[image:image-20220602101311-3.png||height="276" width="600"]]
269 -
270 -
271 -(((
272 -(% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  **<->** (% style="color:blue" %)**USB TTL**
273 -)))
274 -
275 -(((
276 -(% style="background-color:yellow" %)**GND  <-> GND
277 -TXD  <->  TXD
278 -RXD  <->  RXD**
279 -)))
280 -
281 -
282 -Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module)
283 -
284 -Connect USB TTL Adapter to PC after connecting the wires
285 -
286 -
287 -[[image:image-20220602102240-4.png||height="304" width="600"]]
288 -
289 -
290 -
291 -=== 1.9.3  Upgrade steps ===
292 -
293 -
294 -
295 -==== (% style="color:blue" %)**1.  Switch SW1 to put in ISP position**(%%) ====
296 -
297 -
298 -[[image:image-20220602102824-5.png||height="306" width="600"]]
299 -
300 -
301 -
302 -
303 -==== (% style="color:blue" %)**2.  Press the RST switch once**(%%) ====
304 -
305 -
306 -[[image:image-20220817085447-1.png]]
307 -
308 -
309 -
310 -
311 -==== (% style="color:blue" %)**3.  Open the Upgrade tool (Tremo Programmer) in PC and Upgrade**(%%) ====
312 -
313 -
314 -
315 -(((
316 -(% style="color:blue" %)**1.  Software download link:  **(%%)**[[https:~~/~~/www.dropbox.com/sh/j0qyc7a9ejit7jk/AACtx2tK4gEv6YFXMIVUM4dLa?dl=0>>https://www.dropbox.com/sh/j0qyc7a9ejit7jk/AACtx2tK4gEv6YFXMIVUM4dLa?dl=0]]**
317 -)))
318 -
319 -
320 320  [[image:image-20220602103227-6.png]]
321 321  
322 -
323 323  [[image:image-20220602103357-7.png]]
324 324  
188 +===== Select the COM port corresponding to USB TTL =====
325 325  
326 -
327 -(% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %)
328 -(% style="color:blue" %)**2.  Select the COM port corresponding to USB TTL**
329 -
330 -
331 331  [[image:image-20220602103844-8.png]]
332 332  
192 +===== Select the bin file to burn =====
333 333  
334 -
335 -(% class="wikigeneratedid" id="HSelectthebinfiletoburn" %)
336 -(% style="color:blue" %)**3.  Select the bin file to burn**
337 -
338 -
339 339  [[image:image-20220602104144-9.png]]
340 340  
341 -
342 342  [[image:image-20220602104251-10.png]]
343 343  
344 -
345 345  [[image:image-20220602104402-11.png]]
346 346  
200 +===== Click to start the download =====
347 347  
202 +[[image:image-20220602104923-13.png]]
348 348  
349 -(% class="wikigeneratedid" id="HClicktostartthedownload" %)
350 -(% style="color:blue" %)**4.  Click to start the download**
204 +===== The following figure appears to prove that the burning is in progress =====
351 351  
206 +[[image:image-20220602104948-14.png]]
352 352  
353 -[[image:image-20220602104923-13.png]]
208 +===== The following picture appears to prove that the burning is successful =====
354 354  
210 +[[image:image-20220602105251-15.png]]
355 355  
212 += LA66 USB LoRaWAN Adapter =
356 356  
357 -(% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %)
358 -(% style="color:blue" %)**5.  Check update process**
214 +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.
359 359  
216 +Before use, please make sure that the computer has installed the CP2102 driver
360 360  
361 -[[image:image-20220602104948-14.png]]
218 +== Pin Mapping & LED ==
362 362  
220 +== Example Send & Get Messages via LoRaWAN in PC ==
363 363  
222 +Connect the LA66 LoRa Shield to the PC
364 364  
365 -(% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %)
366 -(% style="color:blue" %)**The following picture shows that the burning is successful**
224 +[[image:image-20220602171217-1.png||height="615" width="915"]]
367 367  
226 +Open the serial port tool
368 368  
369 -[[image:image-20220602105251-15.png]]
228 +[[image:image-20220602161617-8.png]]
370 370  
230 +[[image:image-20220602161718-9.png||height="529" width="927"]]
371 371  
232 +Press the reset switch RST on the LA66 LoRa Shield.
372 372  
373 -= 2.  FAQ =
234 +The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
374 374  
236 +[[image:image-20220602161935-10.png]]
375 375  
376 -== 2.1  How to Compile Source Code for LA66? ==
238 +send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
377 377  
240 +example: AT+SENDB=01,02,8,05820802581ea0a5
378 378  
379 -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]]
242 +[[image:image-20220602162157-11.png]]
380 380  
244 +Check to see if TTN received the message
381 381  
246 +[[image:image-20220602162331-12.png||height="547" width="1044"]]
382 382  
383 -== 2.2  Where to find Peer-to-Peer firmware of LA66? ==
248 +== Example Send & Get Messages via LoRaWAN in RPi ==
384 384  
250 +Connect the LA66 LoRa Shield to the RPI
385 385  
386 -Instruction for LA66 Peer to Peer firmware :[[ Instruction >>doc:.Instruction for LA66 Peer to Peer firmware.WebHome]]
252 +[[image:image-20220602171233-2.png||height="592" width="881"]]
387 387  
254 +Log in to the RPI's terminal and connect to the serial port
388 388  
256 +[[image:image-20220602153146-3.png]]
389 389  
390 -= 3.  Order Info =
258 +Press the reset switch RST on the LA66 LoRa Shield.
259 +The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
391 391  
261 +[[image:image-20220602154928-5.png]]
392 392  
393 -**Part Number:**   (% style="color:blue" %)**LA66-LoRaWAN-Shield-XXX** (%%)
263 +send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
394 394  
265 +example: AT+SENDB=01,02,8,05820802581ea0a5
395 395  
396 -(% style="color:blue" %)**XXX**(%%): The default frequency band
267 +[[image:image-20220602160339-6.png]]
397 397  
398 -* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
399 -* (% style="color:red" %)**AU915**(%%):  LoRaWAN AU915 band
400 -* (% style="color:red" %)**EU433**(%%):  LoRaWAN EU433 band
401 -* (% style="color:red" %)**EU868**(%%):  LoRaWAN EU868 band
402 -* (% style="color:red" %)**KR920**(%%):  LoRaWAN KR920 band
403 -* (% style="color:red" %)**US915**(%%):  LoRaWAN US915 band
404 -* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
405 -* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
406 -* (% style="color:red" %)**PP**(%%):  Peer to Peer LoRa Protocol
269 +Check to see if TTN received the message
407 407  
271 +[[image:image-20220602160627-7.png||height="468" width="1013"]]
408 408  
409 -= 4.  Reference =
273 +=== Install Minicom ===
410 410  
275 +Enter the following command in the RPI terminal
411 411  
412 -* Hardware Design File for LA66 LoRaWAN Shield : [[Download>>https://www.dropbox.com/sh/a3wbmdcvqjxaqw5/AADZfvAiykJTK624RgMquH86a?dl=0]]
277 +apt update
413 413  
279 +[[image:image-20220602143155-1.png]]
414 414  
415 -= 5.  FCC Statement =
281 +apt install minicom
416 416  
283 +[[image:image-20220602143744-2.png]]
417 417  
418 -(% style="color:red" %)**FCC Caution:**
285 +=== Send PC's CPU/RAM usage to TTN via script. ===
419 419  
420 -Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
287 +==== Take python as an example： ====
421 421  
422 -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.
289 +===== Preconditions: =====
423 423  
291 +1.LA66 USB LoRaWAN Adapter works fine
424 424  
425 -(% style="color:red" %)**IMPORTANT NOTE: **
293 +2.LA66 USB LoRaWAN Adapter  is registered with TTN
426 426  
427 -(% 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:
295 +===== Steps for usage =====
428 428  
429 -—Reorient or relocate the receiving antenna.
297 +1.Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
430 430  
431 -—Increase the separation between the equipment and receiver.
299 +2.Run the script and see the TTN
432 432  
433 -—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
301 +[[image:image-20220602115852-3.png]]
434 434  
435 -—Consult the dealer or an experienced radio/TV technician for help.
436 436  
437 437  
438 -(% style="color:red" %)**FCC Radiation Exposure Statement: **
305 +== Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
439 439  
440 -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. 
307 +
308 +== Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
309 +
310 +
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