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...	...	@@ -134,32 +134,31 @@
134	134
135	135	== Upgrade Firmware of LA66 LoRaWAN Shield ==
136	136
137		-=== what needs to be used ===
	137	+=== Items needed for update ===
138	138
139		-1.LA66 LoRaWAN Shield that needs to be upgraded
	139	+1. LA66 LoRaWAN Shield
	140	+1. Arduino
	141	+1. USB TO TTL Adapter
140	140
141		-2.Arduino
	143	+[[image:image-20220602100052-2.png||height="341" width="531"]]
142	142
143		-3.USB TO TTL
144	144
145		-[[image:image-20220602100052-2.png]]
	146	+=== Connection ===
146	146
147		-=== Wiring Schematic ===
	148	+[[image:image-20220602101311-3.png||height="350" width="760"]]
148	148
149		-[[image:image-20220602101311-3.png]]
150	150
151		-LA66 LoRaWAN Shield  >>>>>>>>>>>>USB TTL
	151	+(% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  <-----> (% style="color:blue" %)**USB TTL(%%)
	152	+GND  <-----> GND
	153	+TXD  <-----> TXD
	154	+RXD  <-----> RXD
152	152
153		-GND  >>>>>>>>>>>>GND
154		-
155		-TXD  >>>>>>>>>>>>TXD
156		-
157		-RXD  >>>>>>>>>>>>RXD
158		-
159	159	JP6 of LA66 LoRaWAN Shield needs to be connected with yellow jumper cap
160	160
161	161	Connect to the PC after connecting the wires
162	162
	160	+
	161	+
163	163	[[image:image-20220602102240-4.png]]
164	164
165	165	=== Upgrade steps ===
...	...	@@ -228,7 +228,6 @@
228	228
229	229
230	230
231		-
232	232	= LA66 USB LoRaWAN Adapter =
233	233
234	234	== Overview ==
...	...	@@ -250,7 +250,6 @@
250	250	* Firmware upgradable via UART interface
251	251
252	252
253		-
254	254	== Specification ==
255	255
256	256	* CPU: 32-bit 48 MHz
...	...	@@ -270,7 +270,6 @@
270	270	* LoRa Rx current: <9 mA
271	271
272	272
273		-
274	274	== Pin Mapping & LED ==
275	275
276	276	== Example Send & Get Messages via LoRaWAN in PC ==