diff --git a/src/main/java/frc4388/robot/Constants.java b/src/main/java/frc4388/robot/Constants.java
index 68c6003..f7d5575 100644
--- a/src/main/java/frc4388/robot/Constants.java
+++ b/src/main/java/frc4388/robot/Constants.java
@@ -72,8 +72,9 @@ public final class Constants {
     public static final double SERIALIZER_SHOOTER_BELT_SPEED = 1.0; // TODO (currently max power, DO NOT RUN)
     
     // CAN IDs
-    public static final int SERIALIZER_BELT = 1; // TODO
-    public static final int SERIALIZER_SHOOTER_BELT = 1; // TODO
+    public static final int SERIALIZER_BELT = -1; // TODO
+    public static final int SERIALIZER_SHOOTER_BELT = -1; // TODO
+    public static final int SERIALIZER_BELT_BEAM = -1; // TODO
   }
 
   public static final class LEDConstants {
diff --git a/src/main/java/frc4388/robot/RobotContainer.java b/src/main/java/frc4388/robot/RobotContainer.java
index 7f2cbcf..d1282b1 100644
--- a/src/main/java/frc4388/robot/RobotContainer.java
+++ b/src/main/java/frc4388/robot/RobotContainer.java
@@ -78,6 +78,10 @@ public class RobotContainer {
     new JoystickButton(getOperatorJoystick(), XboxController.A_BUTTON)
         .whenPressed(() -> m_robotLED.setPattern(LEDPatterns.LAVA_RAINBOW))
         .whenReleased(() -> m_robotLED.setPattern(LEDConstants.DEFAULT_PATTERN));
+    
+    new JoystickButton(getOperatorJoystick(), XboxController.B_BUTTON)
+        .whenPressed(() -> m_robotSerializer.setSerializerStateWithBeam(true, m_robotSerializer.getBeam()))
+        .whenReleased(() -> m_robotSerializer.setSerializerStateWithBeam(false, m_robotSerializer.getBeam()));
   }
 
   /**
diff --git a/src/main/java/frc4388/robot/subsystems/Serializer.java b/src/main/java/frc4388/robot/subsystems/Serializer.java
index ad25a41..141de75 100644
--- a/src/main/java/frc4388/robot/subsystems/Serializer.java
+++ b/src/main/java/frc4388/robot/subsystems/Serializer.java
@@ -1,31 +1,42 @@
 package frc4388.robot.subsystems;
 
-import edu.wpi.first.wpilibj.command.Subsystem;
 import edu.wpi.first.wpilibj.motorcontrol.Spark;
 import edu.wpi.first.wpilibj2.command.SubsystemBase;
 import frc4388.robot.Constants;
+import edu.wpi.first.wpilibj.DigitalInput;
 
 public class Serializer extends SubsystemBase{
   private Spark m_serializerBelt;
   private Spark m_serializerShooterBelt;
-
+  private DigitalInput m_serializerBeam;
   private boolean serializerState;
 
-    public Serializer(Spark serializerBelt, Spark serializerShooterBelt) {
-        m_serializerBelt = serializerBelt;
-        m_serializerShooterBelt = serializerShooterBelt;
+  public Serializer(Spark serializerBelt, Spark serializerShooterBelt) {
+    m_serializerBelt = serializerBelt;
+    m_serializerShooterBelt = serializerShooterBelt;
+    m_serializerBeam = new DigitalInput(Constants.SerializerConstants.SERIALIZER_BELT_BEAM);
 
-        serializerState = false;
-        setSerializerState(serializerState);
-    }
+    serializerState = false;
+    setSerializerState(serializerState);
+  }
+  public boolean getBeam() {
+    return m_serializerBeam.get();
+  }
+  public void setSerializerStateWithBeam(boolean ctrlbutter, boolean beambroken) {
+    boolean total = ctrlbutter || beambroken;
+    setSerializerState(total);
+  }
+  public void setSerializerState(boolean state) {
+    double serializerBeltSpeed = state ? Constants.SerializerConstants.SERIALIZER_BELT_SPEED : 0.d;
+    double serializerShooterBeltSpeed = state ? Constants.SerializerConstants.SERIALIZER_SHOOTER_BELT_SPEED : 0.d;
 
-    public void setSerializerState(boolean state) {
-      double serializerBeltSpeed = state ? Constants.SerializerConstants.SERIALIZER_BELT_SPEED : 0.d;
-      double serializerShooterBeltSpeed = state ? Constants.SerializerConstants.SERIALIZER_SHOOTER_BELT_SPEED : 0.d;
+    m_serializerBelt.set(serializerBeltSpeed);
+    m_serializerShooterBelt.set(serializerShooterBeltSpeed);
 
-      m_serializerBelt.set(serializerBeltSpeed);
-      m_serializerShooterBelt.set(serializerShooterBeltSpeed);
-
-      serializerState = state;
-    }
+    serializerState = state;
+  }
+  
+  public boolean getSerializerState() {
+    return serializerState;
+  }
 }