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12	12	== 1.1  What is LA66 LoRaWAN Module ==
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15	15	(% 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.
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17	17	(% 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.
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19	19	Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
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21	21	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.
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23	23	LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
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26	26	== 1.2  Features ==
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36	36	* Ultra-long RF range
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39	39	== 1.3  Specification ==
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41	41	* CPU: 32-bit 48 MHz
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57	57	* I/O Voltage: 3.3v
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60	60	== 1.4  AT Command ==
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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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103	103	* Ultra-long RF range
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106	106	== 2.3  Specification ==
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108	108	* CPU: 32-bit 48 MHz
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124	124	* I/O Voltage: 3.3v
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127	127	== 2.4  Pin Mapping & LED ==
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149	149	1. Arduino
150	150	1. USB TO TTL Adapter
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152	152	[[image:image-20220602100052-2.png||height="385" width="600"]]
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158	158	[[image:image-20220602101311-3.png||height="276" width="600"]]
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161	161	(% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  **<->** (% style="color:blue" %)**USB TTL**
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163	163	(% style="background-color:yellow" %)**GND  <-> GND
164	164	TXD  <->  TXD
165	165	RXD  <->  RXD**
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168	168	Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module)
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269	269	* Firmware upgradable via UART interface
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272	272	== 3.3  Specification ==
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274	274	* CPU: 32-bit 48 MHz
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288	288	* LoRa Rx current: <9 mA
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291	291	== 3.4  Pin Mapping & LED ==
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