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62	62	* Firmware upgradable via UART interface
63	63	* Ultra-long RF range
64	64
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	66	+
	67	+
65	65	== 1.3  Specification ==
66	66
67	67	* CPU: 32-bit 48 MHz
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82	82	* LoRa Rx current: <9 mA
83	83	* I/O Voltage: 3.3v
84	84
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	89	+
	90	+
85	85	== 1.4  AT Command ==
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87	87
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164	164	* Firmware upgradable via UART interface
165	165	* Ultra-long RF range
166	166
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	174	+
	175	+
167	167	== 2.3  Specification ==
168	168
169	169	* CPU: 32-bit 48 MHz
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184	184	* LoRa Rx current: <9 mA
185	185	* I/O Voltage: 3.3v
186	186
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	198	+
187	187	== 2.4  LED ==
188	188
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189	189	~1. The LED lights up red when there is an upstream data packet
190	190	2. When the network is successfully connected, the green light will be on for 5 seconds
191	191	3. Purple light on when receiving downlink data packets
192	192
193	193
	207	+
194	194	== 2.5  Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
195	195
196		-Show connection diagram：
197	197
	211	+**Show connection diagram：**
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	213	+
198	198	[[image:image-20220723170210-2.png||height="908" width="681"]]
199	199
200		-1.open Arduino IDE
201	201
	217	+
	218	+**1.  open Arduino IDE**
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	220	+
202	202	[[image:image-20220723170545-4.png]]
203	203
204		-2.Open project
205	205
	224	+
	225	+**2.  Open project**
	226	+
	227	+
	228	+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]]
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206	206	[[image:image-20220723170750-5.png||height="533" width="930"]]
207	207
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
209	209
	233	+
	234	+**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**
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	236	+
210	210	[[image:image-20220723171228-6.png]]
211	211
212		-4.After the upload is successful, open the serial port monitoring and send the AT command
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	240	+
	241	+**4.  After the upload is successful, open the serial port monitoring and send the AT command**
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	243	+
214	214	[[image:image-20220723172235-7.png||height="480" width="1027"]]
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	247	+
216	216	== 2.6  Example: Join TTN network and send an uplink message, get downlink message. ==
217	217
218		-1.Open project
219	219
	251	+**1.  Open project**
	252	+
	253	+
	254	+Join-TTN-network source code link: [[https:~~/~~/www.dropbox.com/sh/trqitpm9adkupva/AAAE542NzwlHubIAIDxe6IWFa?dl=0>>https://www.dropbox.com/sh/trqitpm9adkupva/AAAE542NzwlHubIAIDxe6IWFa?dl=0]]
	255	+
220	220	[[image:image-20220723172502-8.png]]
221	221
222		-2.Same steps as 2.5,after opening the serial port monitoring, it will automatically connect to the network and send packets
223	223
	259	+
	260	+2.  Same steps as 2.5,after opening the serial port monitoring, it will automatically connect to the network and send packets
	261	+
	262	+
224	224	[[image:image-20220723172938-9.png||height="652" width="1050"]]
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