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	3	+{{box cssClass="floatinginfobox" title="**Contents**"}}
3	3	{{toc/}}
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7	7	= 1.  LA66 LoRaWAN Module =
8	8
9	9
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33	33	* Firmware upgradable via UART interface
34	34	* Ultra-long RF range
35	35
36		-
37		-
38	38	== 1.3  Specification ==
39	39
40	40	* CPU: 32-bit 48 MHz
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55	55	* LoRa Rx current: <9 mA
56	56	* I/O Voltage: 3.3v
57	57
58		-
59		-
60	60	== 1.4  AT Command ==
61	61
62	62	AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents.
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102	102	* Firmware upgradable via UART interface
103	103	* Ultra-long RF range
104	104
105		-
106		-
107	107	== 2.3  Specification ==
108	108
109	109	* CPU: 32-bit 48 MHz
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124	124	* LoRa Rx current: <9 mA
125	125	* I/O Voltage: 3.3v
126	126
127		-
128		-
129	129	== 2.4  Pin Mapping & LED ==
130	130
131	131
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162	162
163	163	(% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  **<->** (% style="color:blue" %)**USB TTL**
164	164
	161	+
165	165	(% style="background-color:yellow" %)**GND  <-> GND
166		-TXD  <->  TXD
167		-RXD  <->  RXD**
	163	+TXD  <->  TXD
	164	+RXD  <->  RXD**
168	168
169	169
170	170	Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module)
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184	184	[[image:image-20220602102824-5.png||height="306" width="600"]]
185	185
186	186
187		-
188	188	==== 2.  Press the RST switch once ====
189	189
190	190	[[image:image-20220602104701-12.png||height="285" width="600"]]
191	191
192	192
193		-
194	194	==== 3.  Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ====
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196	196