diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..c7e0c08
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "usart/array"]
+	path = usart/array
+	url = git@blackmark.me:array.git
diff --git a/usart/array b/usart/array
new file mode 160000
index 0000000..634564a
--- /dev/null
+++ b/usart/array
@@ -0,0 +1 @@
+Subproject commit 634564a7bb6f34305dbc6f68993a34a4419899a6
diff --git a/usart/main.cpp b/usart/main.cpp
index 577d594..cdbfbe0 100644
--- a/usart/main.cpp
+++ b/usart/main.cpp
@@ -7,6 +7,7 @@
 #include <stdio.h>
 #include "clock.h"
 #include "usart.h"
+#include "array/array.h"
 
 int main()
 {
@@ -15,75 +16,74 @@ int main()
 
 	uint32_t ui32Counter = 0;
 
-	constexpr size_t sizeBUFFER_SIZE = 64;
-	char szBuffer[sizeBUFFER_SIZE];
+	array<char, 64> arrBuffer;
 
 	cUSART.transmitString( "\r\nSizes: \r\n" );
 
-	sprintf( szBuffer, "%d\r\n", sizeof( char ) );
+	sprintf( arrBuffer.data(), "%d\r\n", sizeof( char ) );
 	cUSART.transmitString( "sizeof( char ) = " );
-	cUSART.transmitString( szBuffer );
+	cUSART.transmitString( arrBuffer.data() );
 
-	sprintf( szBuffer, "%d\r\n", sizeof( unsigned char ) );
+	sprintf( arrBuffer.data(), "%d\r\n", sizeof( unsigned char ) );
 	cUSART.transmitString( "sizeof( unsigned char ) = " );
-	cUSART.transmitString( szBuffer );
+	cUSART.transmitString( arrBuffer.data() );
 
-	sprintf( szBuffer, "%d\r\n", sizeof( short int ) );
+	sprintf( arrBuffer.data(), "%d\r\n", sizeof( short int ) );
 	cUSART.transmitString( "sizeof( short int ) = " );
-	cUSART.transmitString( szBuffer );
+	cUSART.transmitString( arrBuffer.data() );
 
-	sprintf( szBuffer, "%d\r\n", sizeof( unsigned short int ) );
+	sprintf( arrBuffer.data(), "%d\r\n", sizeof( unsigned short int ) );
 	cUSART.transmitString( "sizeof( unsigned short int ) = " );
-	cUSART.transmitString( szBuffer );
+	cUSART.transmitString( arrBuffer.data() );
 
-	sprintf( szBuffer, "%d\r\n", sizeof( int ) );
+	sprintf( arrBuffer.data(), "%d\r\n", sizeof( int ) );
 	cUSART.transmitString( "sizeof( int ) = " );
-	cUSART.transmitString( szBuffer );
+	cUSART.transmitString( arrBuffer.data() );
 
-	sprintf( szBuffer, "%d\r\n", sizeof( unsigned int ) );
+	sprintf( arrBuffer.data(), "%d\r\n", sizeof( unsigned int ) );
 	cUSART.transmitString( "sizeof( unsigned int ) = " );
-	cUSART.transmitString( szBuffer );
+	cUSART.transmitString( arrBuffer.data() );
 
-	sprintf( szBuffer, "%d\r\n", sizeof( long int ) );
+	sprintf( arrBuffer.data(), "%d\r\n", sizeof( long int ) );
 	cUSART.transmitString( "sizeof( long int ) = " );
-	cUSART.transmitString( szBuffer );
+	cUSART.transmitString( arrBuffer.data() );
 
-	sprintf( szBuffer, "%d\r\n", sizeof( unsigned long int ) );
+	sprintf( arrBuffer.data(), "%d\r\n", sizeof( unsigned long int ) );
 	cUSART.transmitString( "sizeof( unsigned long int ) = " );
-	cUSART.transmitString( szBuffer );
+	cUSART.transmitString( arrBuffer.data() );
 
-	sprintf( szBuffer, "%d\r\n", sizeof( long long int ) );
+	sprintf( arrBuffer.data(), "%d\r\n", sizeof( long long int ) );
 	cUSART.transmitString( "sizeof( long long int ) = " );
-	cUSART.transmitString( szBuffer );
+	cUSART.transmitString( arrBuffer.data() );
 
-	sprintf( szBuffer, "%d\r\n", sizeof( unsigned long long int ) );
+	sprintf( arrBuffer.data(), "%d\r\n", sizeof( unsigned long long int ) );
 	cUSART.transmitString( "sizeof( unsigned long long int ) = " );
-	cUSART.transmitString( szBuffer );
+	cUSART.transmitString( arrBuffer.data() );
 
-	sprintf( szBuffer, "%d\r\n", sizeof( float ) );
+	sprintf( arrBuffer.data(), "%d\r\n", sizeof( float ) );
 	cUSART.transmitString( "sizeof( float ) = " );
-	cUSART.transmitString( szBuffer );
+	cUSART.transmitString( arrBuffer.data() );
 
-	sprintf( szBuffer, "%d\r\n", sizeof( double ) );
+	sprintf( arrBuffer.data(), "%d\r\n", sizeof( double ) );
 	cUSART.transmitString( "sizeof( double ) = " );
-	cUSART.transmitString( szBuffer );
+	cUSART.transmitString( arrBuffer.data() );
 
-	sprintf( szBuffer, "%d\r\n", sizeof( long double ) );
+	sprintf( arrBuffer.data(), "%d\r\n", sizeof( long double ) );
 	cUSART.transmitString( "sizeof( long double ) = " );
-	cUSART.transmitString( szBuffer );
+	cUSART.transmitString( arrBuffer.data() );
 
-	sprintf( szBuffer, "%d\r\n\r\n", sizeof( void* ) );
+	sprintf( arrBuffer.data(), "%d\r\n\r\n", sizeof( void* ) );
 	cUSART.transmitString( "sizeof( void* ) = " );
-	cUSART.transmitString( szBuffer );
+	cUSART.transmitString( arrBuffer.data() );
 
 	while( true )
 	{
-		sprintf( szBuffer, "%lu", ui32Counter++ );
+		sprintf( arrBuffer.data(), "%lu", ui32Counter++ );
 		cUSART.transmitString( "This has been running for \"" );
-		cUSART.transmitString( szBuffer );
+		cUSART.transmitString( arrBuffer.data() );
 		cUSART.transmitString( "\" seconds!\r\n" );
 
-		if( !cUSART.receiveLine( szBuffer, sizeBUFFER_SIZE, "\r" ) )
+		if( !cUSART.receiveLine( arrBuffer.data(), arrBuffer.size(), "\r" ) )
 		{
 			cUSART.transmitString( "Receive error: " );
 		}
@@ -92,7 +92,7 @@ int main()
 			cUSART.transmitString( "Echo: " );
 		}
 		
-		cUSART.transmitString( szBuffer );
+		cUSART.transmitString( arrBuffer.data() );
 		cUSART.transmitString( "\r\n" );
 
 		uint8_t ui8Byte;
diff --git a/usart/usart.cpp b/usart/usart.cpp
index 01f1893..52a0a5a 100644
--- a/usart/usart.cpp
+++ b/usart/usart.cpp
@@ -291,11 +291,11 @@ bool USART0::receiveByte( uint8_t &ui8Data, uint16_t ui16DelayMS )
 }
 
 //////////////////////////////////////////////////////////////////////////
-bool USART0::receiveLine( char *szBuffer, size_t sizeLength, const char *szLineTerminator /* = "\r\n" */, size_t sizeMaxSize /* = 1024 */ )
+bool USART0::receiveLine( char *szBuffer, size_t sizeBufferLength, const char *szLineTerminator /* = "\r\n" */, size_t sizeMaxSize /* = 512 */ )
 {
 	size_t sizeReceived = 0;
 
-	while( sizeReceived < sizeMaxSize - 1 && sizeReceived < sizeLength - 1 )
+	while( sizeReceived < sizeMaxSize - 1 && sizeReceived < sizeBufferLength - 1 )
 	{
 		uint8_t ui8ReceiveByte;
 
diff --git a/usart/usart.cppproj b/usart/usart.cppproj
index 13483d3..2021324 100644
--- a/usart/usart.cppproj
+++ b/usart/usart.cppproj
@@ -192,6 +192,9 @@
     <PreBuildEvent>echo "C:\avrdude-6.2\avrdude.exe" -v -p$(avrdevice) %%* -Uflash:w:"$(OutputDirectory)\$(Name).hex":i &gt; "$(MSBuildProjectDirectory)\avrdude.bat"</PreBuildEvent>
   </PropertyGroup>
   <ItemGroup>
+    <Compile Include="array\array.h">
+      <SubType>compile</SubType>
+    </Compile>
     <Compile Include="clock.h">
       <SubType>compile</SubType>
     </Compile>
@@ -205,5 +208,8 @@
       <SubType>compile</SubType>
     </Compile>
   </ItemGroup>
+  <ItemGroup>
+    <Folder Include="array" />
+  </ItemGroup>
   <Import Project="$(AVRSTUDIO_EXE_PATH)\\Vs\\Compiler.targets" />
 </Project>
\ No newline at end of file
diff --git a/usart/usart.h b/usart/usart.h
index 7a412c0..399214c 100644
--- a/usart/usart.h
+++ b/usart/usart.h
@@ -137,7 +137,7 @@ public:
 
 	bool receiveByte( uint8_t &ui8Data );
 	bool receiveByte( uint8_t &ui8Data, uint16_t ui16DelayMS );
-	bool receiveLine( char *szBuffer, size_t sizeLength, const char *szLineTerminator = "\r\n", size_t sizeMaxSize = 512 );
+	bool receiveLine( char *szBuffer, size_t sizeBufferLength, const char *szLineTerminator = "\r\n", size_t sizeMaxSize = 512 );
 
 	void transmitByte( uint8_t ui8Data );
 	void transmitString( const char *szString );