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62	62	* Firmware upgradable via UART interface
63	63	* Ultra-long RF range
64	64
65		-
66		-
67		-
68	68	== 1.3  Specification ==
69	69
70	70	* CPU: 32-bit 48 MHz
...	...	@@ -85,9 +85,6 @@
85	85	* LoRa Rx current: <9 mA
86	86	* I/O Voltage: 3.3v
87	87
88		-
89		-
90		-
91	91	== 1.4  AT Command ==
92	92
93	93
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199	199
200	200	== 2.5  Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
201	201
	196	+Show connection diagram：
202	202
203		-**Show connection diagram：**
204		-
205		-
206	206	[[image:image-20220723170210-2.png||height="908" width="681"]]
207	207
	200	+1.open Arduino IDE
208	208
209		-
210		-**1.  open Arduino IDE**
211		-
212		-
213	213	[[image:image-20220723170545-4.png]]
214	214
	204	+2.Open project
215	215
216		-
217		-**2.  Open project**
218		-
219		-
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]]
221		-
222	222	[[image:image-20220723170750-5.png||height="533" width="930"]]
223	223
	208	+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
224	224
225		-
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**
227		-
228		-
229	229	[[image:image-20220723171228-6.png]]
230	230
	212	+4.After the upload is successful, open the serial port monitoring and send the AT command
231	231
232		-
233		-**4.  After the upload is successful, open the serial port monitoring and send the AT command**
234		-
235		-
236	236	[[image:image-20220723172235-7.png||height="480" width="1027"]]
237	237
238		-
239		-
240	240	== 2.6  Example: Join TTN network and send an uplink message, get downlink message. ==
241	241
	218	+1.Open project
242	242
243		-**1.  Open project**
244		-
245		-
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]]
247		-
248	248	[[image:image-20220723172502-8.png]]
249	249
	222	+2.Same steps as 2.5,after opening the serial port monitoring, it will automatically connect to the network and send packets
250	250
251		-
252		-2.  Same steps as 2.5,after opening the serial port monitoring, it will automatically connect to the network and send packets
253		-
254		-
255	255	[[image:image-20220723172938-9.png||height="652" width="1050"]]
256	256
257	257