diff --git a/app/src/main/java/com/quillstudios/pokegoalshelper/controllers/DetectionController.kt b/app/src/main/java/com/quillstudios/pokegoalshelper/controllers/DetectionController.kt
new file mode 100644
index 0000000..5ab7627
--- /dev/null
+++ b/app/src/main/java/com/quillstudios/pokegoalshelper/controllers/DetectionController.kt
@@ -0,0 +1,135 @@
+package com.quillstudios.pokegoalshelper.controllers
+
+import android.util.Log
+import com.quillstudios.pokegoalshelper.YOLOOnnxDetector
+import com.quillstudios.pokegoalshelper.ui.interfaces.DetectionUIEvents
+import com.quillstudios.pokegoalshelper.ui.interfaces.DetectionUICallbacks
+import org.opencv.core.Mat
+
+/**
+ * Controller handling detection business logic.
+ * Decouples UI interactions from YOLO detection implementation.
+ */
+class DetectionController(
+    private val yoloDetector: YOLOOnnxDetector
+) : DetectionUIEvents {
+    
+    companion object {
+        private const val TAG = "DetectionController"
+    }
+    
+    private var uiCallbacks: DetectionUICallbacks? = null
+    private var currentSettings = DetectionSettings()
+    
+    /**
+     * Register UI callbacks for status updates
+     */
+    fun setUICallbacks(callbacks: DetectionUICallbacks) {
+        uiCallbacks = callbacks
+    }
+    
+    /**
+     * Remove UI callbacks (cleanup)
+     */
+    fun clearUICallbacks() {
+        uiCallbacks = null
+    }
+    
+    // === DetectionUIEvents Implementation ===
+    
+    override fun onDetectionRequested() {
+        Log.d(TAG, "🔍 Detection requested via controller")
+        uiCallbacks?.onDetectionStarted()
+        
+        // Business logic will be handled by the service layer
+        // For now, just notify completion
+        uiCallbacks?.onDetectionCompleted(0)
+    }
+    
+    override fun onClassFilterChanged(className: String?) {
+        Log.i(TAG, "🔍 Class filter changed to: ${className ?: "ALL CLASSES"}")
+        
+        currentSettings.classFilter = className
+        
+        // Apply filter to YOLO detector
+        YOLOOnnxDetector.setClassFilter(className)
+        
+        // Notify UI of settings change
+        uiCallbacks?.onSettingsChanged(
+            currentSettings.classFilter,
+            currentSettings.debugMode,
+            currentSettings.coordinateMode
+        )
+    }
+    
+    override fun onDebugModeToggled() {
+        currentSettings.debugMode = !currentSettings.debugMode
+        Log.i(TAG, "📊 Debug mode toggled: ${currentSettings.debugMode}")
+        
+        // Apply debug mode to YOLO detector
+        YOLOOnnxDetector.toggleShowAllConfidences()
+        
+        // Notify UI of settings change
+        uiCallbacks?.onSettingsChanged(
+            currentSettings.classFilter,
+            currentSettings.debugMode,
+            currentSettings.coordinateMode
+        )
+    }
+    
+    override fun onCoordinateModeChanged(mode: String) {
+        Log.i(TAG, "🔧 Coordinate mode changed to: $mode")
+        
+        currentSettings.coordinateMode = mode
+        
+        // Apply coordinate mode to YOLO detector
+        YOLOOnnxDetector.setCoordinateMode(mode)
+        
+        // Notify UI of settings change
+        uiCallbacks?.onSettingsChanged(
+            currentSettings.classFilter,
+            currentSettings.debugMode,
+            currentSettings.coordinateMode
+        )
+    }
+    
+    // === Business Logic Methods ===
+    
+    /**
+     * Process detection on the given image
+     * This will be called by the service layer
+     */
+    fun processDetection(inputMat: Mat): Int {
+        return try {
+            uiCallbacks?.onDetectionStarted()
+            
+            val detections = yoloDetector.detect(inputMat)
+            val detectionCount = detections.size
+            
+            Log.i(TAG, "✅ Detection completed: $detectionCount objects found")
+            uiCallbacks?.onDetectionCompleted(detectionCount)
+            
+            detectionCount
+        } catch (e: Exception) {
+            Log.e(TAG, "❌ Detection failed", e)
+            uiCallbacks?.onDetectionFailed(e.message ?: "Unknown error")
+            0
+        }
+    }
+    
+    /**
+     * Get current detection settings
+     */
+    fun getCurrentSettings(): DetectionSettings {
+        return currentSettings.copy()
+    }
+}
+
+/**
+ * Data class representing current detection settings
+ */
+data class DetectionSettings(
+    var classFilter: String? = null,
+    var debugMode: Boolean = false,
+    var coordinateMode: String = "HYBRID"
+)
\ No newline at end of file
diff --git a/app/src/main/java/com/quillstudios/pokegoalshelper/ui/FloatingOrbUI.kt b/app/src/main/java/com/quillstudios/pokegoalshelper/ui/FloatingOrbUI.kt
new file mode 100644
index 0000000..dcb3690
--- /dev/null
+++ b/app/src/main/java/com/quillstudios/pokegoalshelper/ui/FloatingOrbUI.kt
@@ -0,0 +1,269 @@
+package com.quillstudios.pokegoalshelper.ui
+
+import android.content.Context
+import android.graphics.PixelFormat
+import android.os.Build
+import android.util.Log
+import android.view.Gravity
+import android.view.View
+import android.view.ViewGroup
+import android.view.WindowManager
+import android.widget.Button
+import android.widget.LinearLayout
+import com.quillstudios.pokegoalshelper.ui.interfaces.DetectionUIEvents
+import com.quillstudios.pokegoalshelper.ui.interfaces.DetectionUICallbacks
+
+/**
+ * Floating orb UI component that handles user interactions.
+ * Implements CalcIV-style expandable menu system.
+ * 
+ * This is pure UI logic - no business logic or direct detector calls.
+ */
+class FloatingOrbUI(
+    private val context: Context,
+    private val detectionEvents: DetectionUIEvents
+) : DetectionUICallbacks {
+    
+    companion object {
+        private const val TAG = "FloatingOrbUI"
+        private const val ORB_SIZE = 120
+        private const val MENU_BUTTON_WIDTH = 160
+        private const val MENU_BUTTON_HEIGHT = 60
+    }
+    
+    private var windowManager: WindowManager? = null
+    private var orbButton: View? = null
+    private var expandedMenu: View? = null
+    private var isMenuExpanded = false
+    private var isProcessing = false
+    
+    /**
+     * Initialize and show the floating orb
+     */
+    fun show() {
+        try {
+            if (orbButton != null) return // Already shown
+            
+            windowManager = context.getSystemService(Context.WINDOW_SERVICE) as WindowManager
+            createFloatingOrb()
+            Log.d(TAG, "✅ Floating orb UI shown")
+            
+        } catch (e: Exception) {
+            Log.e(TAG, "❌ Error showing floating orb", e)
+        }
+    }
+    
+    /**
+     * Hide and cleanup the floating orb
+     */
+    fun hide() {
+        try {
+            if (isMenuExpanded) {
+                collapseMenu()
+            }
+            
+            orbButton?.let { 
+                windowManager?.removeView(it)
+                orbButton = null
+            }
+            
+            windowManager = null
+            Log.d(TAG, "🗑️ Floating orb UI hidden")
+            
+        } catch (e: Exception) {
+            Log.e(TAG, "❌ Error hiding floating orb", e)
+        }
+    }
+    
+    // === DetectionUICallbacks Implementation ===
+    
+    override fun onDetectionStarted() {
+        isProcessing = true
+        updateOrbAppearance()
+        
+        // Auto-collapse menu during processing
+        if (isMenuExpanded) {
+            collapseMenu()
+        }
+    }
+    
+    override fun onDetectionCompleted(detectionCount: Int) {
+        isProcessing = false
+        updateOrbAppearance()
+        Log.d(TAG, "🎯 Detection completed: $detectionCount objects")
+    }
+    
+    override fun onDetectionFailed(error: String) {
+        isProcessing = false
+        updateOrbAppearance()
+        Log.e(TAG, "❌ Detection failed: $error")
+    }
+    
+    override fun onSettingsChanged(filterClass: String?, debugMode: Boolean, coordinateMode: String) {
+        Log.d(TAG, "⚙️ Settings updated - Filter: $filterClass, Debug: $debugMode, Mode: $coordinateMode")
+        // UI could update visual indicators here if needed
+    }
+    
+    // === Private UI Methods ===
+    
+    private fun createFloatingOrb() {
+        orbButton = Button(context).apply {
+            text = "🎯"
+            textSize = 20f
+            setBackgroundResource(android.R.drawable.btn_default)
+            background.setTint(0xFF4CAF50.toInt()) // Green
+            setTextColor(0xFFFFFFFF.toInt())
+            
+            width = ORB_SIZE
+            height = ORB_SIZE
+            layoutParams = ViewGroup.LayoutParams(ORB_SIZE, ORB_SIZE)
+            
+            setOnClickListener { handleOrbClick() }
+        }
+        
+        val params = WindowManager.LayoutParams(
+            ORB_SIZE, ORB_SIZE,
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY
+            } else {
+                @Suppress("DEPRECATION")
+                WindowManager.LayoutParams.TYPE_PHONE
+            },
+            WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
+            PixelFormat.TRANSLUCENT
+        ).apply {
+            gravity = Gravity.TOP or Gravity.START
+            x = 50
+            y = 200
+        }
+        
+        windowManager?.addView(orbButton, params)
+    }
+    
+    private fun handleOrbClick() {
+        if (isProcessing) {
+            Log.d(TAG, "⚠️ Ignoring click - detection in progress")
+            return
+        }
+        
+        if (isMenuExpanded) {
+            collapseMenu()
+        } else {
+            expandMenu()
+        }
+    }
+    
+    private fun expandMenu() {
+        if (isMenuExpanded || isProcessing) return
+        
+        val menuContainer = LinearLayout(context).apply {
+            orientation = LinearLayout.VERTICAL
+            setBackgroundColor(0xE0000000.toInt()) // Semi-transparent black
+            setPadding(16, 16, 16, 16)
+        }
+        
+        // Define menu options with their actions
+        val menuItems = listOf(
+            MenuOption("🔍 DETECT", 0xFF4CAF50.toInt()) { 
+                detectionEvents.onDetectionRequested() 
+            },
+            MenuOption("SHINY", 0xFFFFD700.toInt()) { 
+                detectionEvents.onClassFilterChanged("shiny_icon")
+                detectionEvents.onDetectionRequested()
+            },
+            MenuOption("POKEBALL", 0xFFE91E63.toInt()) { 
+                detectionEvents.onClassFilterChanged("ball_icon_cherishball")
+                detectionEvents.onDetectionRequested()
+            },
+            MenuOption("ALL", 0xFF607D8B.toInt()) { 
+                detectionEvents.onClassFilterChanged(null)
+                detectionEvents.onDetectionRequested()
+            },
+            MenuOption("DEBUG", 0xFFFF5722.toInt()) { 
+                detectionEvents.onDebugModeToggled()
+                detectionEvents.onDetectionRequested()
+            }
+        )
+        
+        menuItems.forEach { option ->
+            val button = createMenuButton(option)
+            menuContainer.addView(button)
+        }
+        
+        expandedMenu = menuContainer
+        
+        val params = WindowManager.LayoutParams(
+            WindowManager.LayoutParams.WRAP_CONTENT,
+            WindowManager.LayoutParams.WRAP_CONTENT,
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY
+            } else {
+                @Suppress("DEPRECATION")
+                WindowManager.LayoutParams.TYPE_PHONE
+            },
+            WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
+            PixelFormat.TRANSLUCENT
+        ).apply {
+            gravity = Gravity.TOP or Gravity.START
+            x = 180 // Position next to the orb
+            y = 200
+        }
+        
+        windowManager?.addView(expandedMenu, params)
+        isMenuExpanded = true
+        updateOrbAppearance()
+    }
+    
+    private fun collapseMenu() {
+        if (!isMenuExpanded) return
+        
+        expandedMenu?.let { windowManager?.removeView(it) }
+        expandedMenu = null
+        isMenuExpanded = false
+        updateOrbAppearance()
+    }
+    
+    private fun createMenuButton(option: MenuOption): Button {
+        return Button(context).apply {
+            text = option.text
+            textSize = 12f
+            setBackgroundColor(option.color)
+            setTextColor(0xFFFFFFFF.toInt())
+            layoutParams = LinearLayout.LayoutParams(MENU_BUTTON_WIDTH, MENU_BUTTON_HEIGHT).apply {
+                setMargins(0, 0, 0, 8)
+            }
+            setOnClickListener { 
+                option.action()
+                collapseMenu()
+            }
+        }
+    }
+    
+    private fun updateOrbAppearance() {
+        (orbButton as? Button)?.apply {
+            when {
+                isProcessing -> {
+                    text = "⏳"
+                    background.setTint(0xFFFF9800.toInt()) // Orange
+                }
+                isMenuExpanded -> {
+                    text = "✖"
+                    background.setTint(0xFFFF5722.toInt()) // Orange-red
+                }
+                else -> {
+                    text = "🎯"
+                    background.setTint(0xFF4CAF50.toInt()) // Green
+                }
+            }
+        }
+    }
+    
+    /**
+     * Data class for menu options
+     */
+    private data class MenuOption(
+        val text: String,
+        val color: Int,
+        val action: () -> Unit
+    )
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/quillstudios/pokegoalshelper/ui/interfaces/DetectionUIEvents.kt b/app/src/main/java/com/quillstudios/pokegoalshelper/ui/interfaces/DetectionUIEvents.kt
new file mode 100644
index 0000000..287bf72
--- /dev/null
+++ b/app/src/main/java/com/quillstudios/pokegoalshelper/ui/interfaces/DetectionUIEvents.kt
@@ -0,0 +1,60 @@
+package com.quillstudios.pokegoalshelper.ui.interfaces
+
+/**
+ * Interface for UI events related to detection functionality.
+ * UI components implement this to communicate with business logic controllers.
+ */
+interface DetectionUIEvents {
+    /**
+     * Triggered when user requests manual detection
+     */
+    fun onDetectionRequested()
+    
+    /**
+     * Triggered when user changes class filter
+     * @param className Name of class to filter, or null for all classes
+     */
+    fun onClassFilterChanged(className: String?)
+    
+    /**
+     * Triggered when user toggles debug mode
+     */
+    fun onDebugModeToggled()
+    
+    /**
+     * Triggered when user changes coordinate transformation mode
+     * @param mode Transformation mode (DIRECT, LETTERBOX, HYBRID)
+     */
+    fun onCoordinateModeChanged(mode: String)
+}
+
+/**
+ * Interface for callbacks from business logic back to UI.
+ * UI components implement this to receive status updates.
+ */
+interface DetectionUICallbacks {
+    /**
+     * Called when detection starts processing
+     */
+    fun onDetectionStarted()
+    
+    /**
+     * Called when detection completes successfully
+     * @param detectionCount Number of objects detected
+     */
+    fun onDetectionCompleted(detectionCount: Int)
+    
+    /**
+     * Called when detection fails
+     * @param error Error message
+     */
+    fun onDetectionFailed(error: String)
+    
+    /**
+     * Called when settings change
+     * @param filterClass Current class filter (null if showing all)
+     * @param debugMode Current debug mode state
+     * @param coordinateMode Current coordinate transformation mode
+     */
+    fun onSettingsChanged(filterClass: String?, debugMode: Boolean, coordinateMode: String)
+}
\ No newline at end of file