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3		-{{box cssClass="floatinginfobox" title="**Contents**"}}
4	4	{{toc/}}
5		-{{/box}}
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7		-{{toc/}}
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9	9
10		-
11	11	= 1.  LA66 LoRaWAN Module =
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13	13
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37	37	* Firmware upgradable via UART interface
38	38	* Ultra-long RF range
39	39
	36	+
	37	+
40	40	== 1.3  Specification ==
41	41
42	42	* CPU: 32-bit 48 MHz
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57	57	* LoRa Rx current: <9 mA
58	58	* I/O Voltage: 3.3v
59	59
	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	+
105	105	== 2.3  Specification ==
106	106
107	107	* CPU: 32-bit 48 MHz
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122	122	* LoRa Rx current: <9 mA
123	123	* I/O Voltage: 3.3v
124	124
	127	+
	128	+
125	125	== 2.4  Pin Mapping & LED ==
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127	127
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159	159	(% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  **<->** (% style="color:blue" %)**USB TTL**
160	160
161		-
162	162	(% style="background-color:yellow" %)**GND  <-> GND
163		-TXD  <->  TXD
164		-RXD  <->  RXD**
	166	+TXD  <->  TXD
	167	+RXD  <->  RXD**
165	165
166	166
167	167	Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module)
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181	181	[[image:image-20220602102824-5.png||height="306" width="600"]]
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	187	+
184	184	==== 2.  Press the RST switch once ====
185	185
186	186	[[image:image-20220602104701-12.png||height="285" width="600"]]
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	193	+
189	189	==== 3.  Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ====
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