diff --git a/Microcontrollers/Opdracht 2.2/main.c b/Microcontrollers/Opdracht 2.2/main.c
index 56f878f..b8166c7 100644
--- a/Microcontrollers/Opdracht 2.2/main.c	
+++ b/Microcontrollers/Opdracht 2.2/main.c	
@@ -14,7 +14,10 @@ void wait( int ms ) {
 		_delay_ms( 1 );		// library function (max 30 ms at 8MHz)
 	}
 }
-
+/************************************************************************/
+/* interrupt 1
+walk the light 1 down                                                                     */
+/************************************************************************/
 ISR( INT1_vect ) {
 	if (PORTC == 0b10000000)
 	{
@@ -26,6 +29,10 @@ ISR( INT1_vect ) {
 	
 }
 
+/************************************************************************/
+/* interrupt 2
+walk the light 1 up                                                                     */
+/************************************************************************/
 ISR( INT2_vect ) {
 	if (PORTC == 0b00000001)
 	{
@@ -47,13 +54,13 @@ int main(void)
 	EICRA |= 0x2C;			// INT2 falling edge, INT1 rising edge
 	EIMSK |= 0x06;			// Enable INT2 & INT1
 	
-	PORTC = 0x01;
+	PORTC = 0x01; // init the first bit
 	
-	sei();
+	sei(); // enable input mechanism
 	
     while (1) 
     {
-		wait(500);
+		
     }
 }
 
diff --git a/Microcontrollers/opdracht 2.3/main.c b/Microcontrollers/opdracht 2.3/main.c
new file mode 100644
index 0000000..5bfbf00
--- /dev/null
+++ b/Microcontrollers/opdracht 2.3/main.c	
@@ -0,0 +1,38 @@
+/*
+ * main.c
+ *
+ * Created: 2/10/2021 11:45:42 AM
+ *  Author: Sem
+ */ 
+
+#include <xc.h>
+#include <avr/io.h>
+#include <util/delay.h>
+
+void wait( int ms ) {
+	for (int i=0; i<ms; i++) {
+		_delay_ms( 1 );		// library function (max 30 ms at 8MHz)
+	}
+}
+
+const unsigned char Numbers [10] = {
+	// dPgfe dcba
+	0b 0011 1111, // 0
+	0b 0000 0110, // 1
+	0b 0101 1011, // 2
+	0b 0100 1111, // 3
+	0b 0110 0110, // 4
+	0b 0110 1101, // 5
+	0b 0111 1101, // 6
+	0b 0000 0111, // 7
+	0b 0111 1111, // 8
+	0b 0110 1111, // 9
+};
+
+int main(void)
+{
+    while(1)
+    {
+        //TODO:: Please write your application code 
+    }
+}
\ No newline at end of file
diff --git a/Microcontrollers/opdracht 2.3/opdracht 2.3.componentinfo.xml b/Microcontrollers/opdracht 2.3/opdracht 2.3.componentinfo.xml
new file mode 100644
index 0000000..bbcc667
--- /dev/null
+++ b/Microcontrollers/opdracht 2.3/opdracht 2.3.componentinfo.xml	
@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Store xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="AtmelPackComponentManagement">
+	<ProjectComponents>
+		<ProjectComponent z:Id="i1" xmlns:z="http://schemas.microsoft.com/2003/10/Serialization/">
+			<CApiVersion></CApiVersion>
+			<CBundle></CBundle>
+			<CClass>Device</CClass>
+			<CGroup>Startup</CGroup>
+			<CSub></CSub>
+			<CVariant></CVariant>
+			<CVendor>Atmel</CVendor>
+			<CVersion>1.6.0</CVersion>
+			<DefaultRepoPath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs</DefaultRepoPath>
+			<DependentComponents xmlns:d4p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays" />
+			<Description></Description>
+			<Files xmlns:d4p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
+				<d4p1:anyType i:type="FileInfo">
+					<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.6.364\xc8\avr\include\avr\iom128.h</AbsolutePath>
+					<Attribute></Attribute>
+					<Category>header</Category>
+					<Condition>XC</Condition>
+					<FileContentHash>JdJ7J9I/SJh965SEyyyVYw==</FileContentHash>
+					<FileVersion></FileVersion>
+					<Name>xc8/avr/include/avr/iom128.h</Name>
+					<SelectString></SelectString>
+					<SourcePath></SourcePath>
+				</d4p1:anyType>
+			</Files>
+			<PackName>ATmega_DFP</PackName>
+			<PackPath>C:/Program Files (x86)/Atmel/Studio/7.0/Packs/atmel/ATmega_DFP/1.6.364/Atmel.ATmega_DFP.pdsc</PackPath>
+			<PackVersion>1.6.364</PackVersion>
+			<PresentInProject>true</PresentInProject>
+			<ReferenceConditionId>ATmega128</ReferenceConditionId>
+			<RteComponents xmlns:d4p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
+				<d4p1:string></d4p1:string>
+			</RteComponents>
+			<Status>Resolved</Status>
+			<VersionMode>Fixed</VersionMode>
+			<IsComponentInAtProject>true</IsComponentInAtProject>
+		</ProjectComponent>
+	</ProjectComponents>
+</Store>
\ No newline at end of file
diff --git a/Microcontrollers/opdracht 2.3/opdracht 2.3.cproj b/Microcontrollers/opdracht 2.3/opdracht 2.3.cproj
new file mode 100644
index 0000000..fb30d94
--- /dev/null
+++ b/Microcontrollers/opdracht 2.3/opdracht 2.3.cproj	
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectVersion>7.0</ProjectVersion>
+    <ToolchainName>com.microchip.xc8</ToolchainName>
+    <ProjectGuid>2285C48D-296E-43FD-A7B6-69885F64CFFD</ProjectGuid>
+    <avrdevice>ATmega128</avrdevice>
+    <avrdeviceseries>none</avrdeviceseries>
+    <OutputType>Executable</OutputType>
+    <Language>C</Language>
+    <OutputFileName>$(MSBuildProjectName)</OutputFileName>
+    <OutputFileExtension>.elf</OutputFileExtension>
+    <OutputDirectory>$(MSBuildProjectDirectory)\$(Configuration)</OutputDirectory>
+    <AssemblyName>opdracht 2.3</AssemblyName>
+    <Name>opdracht 2.3</Name>
+    <RootNamespace>opdracht 2.3</RootNamespace>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
+    <ToolchainSettings />
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
+    <ToolchainSettings />
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="main.c">
+      <SubType>compile</SubType>
+    </Compile>
+  </ItemGroup>
+  <Import Project="$(AVRSTUDIO_EXE_PATH)\\Vs\\Compiler.targets" />
+</Project>
\ No newline at end of file