diff --git a/plugins/MidiActionsTestPlugin.py b/plugins/MidiActionsTestPlugin.py
index bcec862..239906a 100644
--- a/plugins/MidiActionsTestPlugin.py
+++ b/plugins/MidiActionsTestPlugin.py
@@ -2,7 +2,7 @@ import data_centre.plugin_collection
 from data_centre.plugin_collection import ActionsPlugin, SequencePlugin
 
 class MidiActionsTestPlugin(ActionsPlugin,SequencePlugin):
-    disabled = False
+    disabled = True
 
     def __init__(self, plugin_collection):
         super().__init__(plugin_collection)
diff --git a/plugins/ShaderLoopRecordPlugin.py b/plugins/ShaderLoopRecordPlugin.py
new file mode 100644
index 0000000..65dc369
--- /dev/null
+++ b/plugins/ShaderLoopRecordPlugin.py
@@ -0,0 +1,178 @@
+import data_centre.plugin_collection
+from data_centre.plugin_collection import ActionsPlugin, SequencePlugin
+
+class ShaderLoopRecordPlugin(ActionsPlugin,SequencePlugin):
+    disabled = False
+    MAX_CLIPS = 8
+
+    def __init__(self, plugin_collection):
+        super().__init__(plugin_collection)
+
+        self.PRESET_FILE_NAME = "ShaderLoopRecordPlugin/frames.json"
+
+        self.frames = self.load_presets()
+        self.reset_ignored()
+
+    def load_presets(self):
+        #try:
+        print("trying load presets? %s " % self.PRESET_FILE_NAME)
+        p = self.pc.read_json(self.PRESET_FILE_NAME)
+        if p:
+            while len(p)<self.MAX_CLIPS:
+                print ("adding clip ")
+                p += self.get_empty_clip(self.duration) #[ [None] ] #*((int(self.duration / self.frequency))-len(p)) ]
+            for i in p:
+                print("got automation clip of duration %s" % len(i))
+                if i and len(i)<(int(self.duration / self.frequency)):
+                    print("adding more slots due to size change")
+                    i += [None]*((int(self.duration / self.frequency))-len(i))
+                    print("len is now %s" % len(i))
+            return p
+        elif p:
+            return p
+        else:
+            return self.get_factory_reset()
+        #except:
+        #    return self.clear_frames()
+
+    def save_presets(self):
+        self.pc.update_json(self.PRESET_FILE_NAME, self.frames)
+
+
+    @property
+    def parserlist(self):
+        return [
+                ( r"run_automation",  self.run_automation ),
+                ( r"stop_automation", self.stop_automation ),
+                ( r"toggle_pause_automation", self.toggle_pause_automation ),
+                ( r"pause_automation", self.pause_automation ),
+                ( r"toggle_loop_automation", self.toggle_loop_automation ),
+                ( r"set_automation_speed", self.set_speed ),
+                ( r"toggle_record_automation", self.toggle_record_automation ),
+                ( r"toggle_overdub_automation", self.toggle_overdub_automation ),
+                ( r"clear_automation", self.clear_clip ),
+                ( r"select_automation_clip_([0-7])", self.select_clip ),
+                ( r"toggle_automation_clip_([0-7])", self.toggle_clip )
+        ]
+
+    def toggle_overdub_automation(self):
+        self.overdub = not self.overdub
+        if not self.overdub:
+            self.reset_ignored()
+
+    def toggle_record_automation(self):
+        self.recording = not self.recording
+        if self.recording and not self.overdub:
+            self.clear_clip()
+        if not self.recording:
+            self.reset_ignored()
+            self.last_frame = None
+            self.last_saved_index = None
+            self.save_presets()
+
+    def get_empty_clip(self, duration = 2000):
+        return [{}] * (int(duration / self.frequency))
+
+    def get_factory_reset(self):
+        return [ self.get_empty_clip(self.duration) for i in range(self.MAX_CLIPS) ]
+
+    def clear_clip(self,clip = None):
+        if clip is None:
+            clip = self.selected_clip
+        self.frames[clip] = self.get_empty_clip(self.duration) * self.MAX_CLIPS
+        self.reset_ignored()
+        if self.DEBUG_FRAMES: print ("clear_frames set to %s" % (int(self.duration / self.frequency)))
+        return self.frames
+
+    def toggle_clip(self,clip = None):
+        if clip is None:
+            clip = self.selected_clip
+        else:
+            self.selected_clip = clip
+
+        #self.running_clips[clip] = not self.running_clips[clip]
+        if clip in self.running_clips:
+            self.running_clips.remove(clip)
+        else:
+            self.running_clips.append(clip)
+        print("running clips looks like %s" %self.running_clips)
+
+    def reset_ignored(self):
+        # print("!!!!resetting ignored")
+        self.ignored = { 'shader_params': [[None]*4,[None]*4,[None]*4] }
+
+    def is_ignoring(self):
+        return not self.pc.shaders.is_frame_empty(self.ignored)
+
+    def select_clip(self, clip):
+        self.selected_clip = clip
+
+    selected_clip = 0
+    running_clips = [ ] #False ] * self.MAX_CLIPS
+
+    duration = 2000
+    frequency = 10 #25 
+    recording = False
+    overdub = True 
+    #ignored = None # set in reset_ignored in init - used for tracking what parans have changed since overdub
+    last_frame = None # for tracking what's changed between frames when overdubbing
+    last_saved_index = None # for backfilling
+    DEBUG_FRAMES = False#True
+    def run_sequence(self, position):
+        current_frame_index = int(position * (int(self.duration / self.frequency)))
+        if current_frame_index<0:
+            current_frame_index = (self.duration/self.frequency) - current_frame_index
+        if current_frame_index > self.duration/self.frequency:
+            current_frame_index = self.duration/self.frequency
+
+        if self.DEBUG_FRAMES: print (">>>>>>>>>>>>>>frame at %i%%: %i" % (position*100, current_frame_index))
+        #print("got frame index %s" % current_frame_index)
+
+        current_frame = self.pc.shaders.get_live_frame().copy()
+
+        selected_clip = self.selected_clip
+        if self.DEBUG_FRAMES: print("current_frame copy before recall is %s" % current_frame['shader_params'])
+        #print ("%s clips, looks like %s" % (len(self.frames),self.frames))
+
+        #print("selected_clip is %s "%selected_clip)
+        #clip = self.frames[selected_clip]
+        if self.is_playing() and self.recording and self.selected_clip not in self.running_clips:
+            self.running_clips += [ self.selected_clip ]
+        for selected_clip in self.running_clips:
+          saved_frame = self.frames[selected_clip][current_frame_index]
+          if not self.recording or (selected_clip!=self.selected_clip):
+              self.pc.shaders.recall_frame(saved_frame)
+          if self.recording and selected_clip==self.selected_clip:
+            if self.last_frame is None: 
+                self.last_frame = current_frame
+            if self.DEBUG_FRAMES: print("last frame is \t\t%s" % self.last_frame['shader_params'])
+            if self.DEBUG_FRAMES: print("current f is  \t\t%s" % current_frame['shader_params'])
+            diff = self.pc.shaders.get_frame_diff(self.last_frame,current_frame)
+            if self.DEBUG_FRAMES: print("diffed frame is \t%s" % diff['shader_params'])
+
+            if self.overdub and saved_frame:
+                # add the params tweaked this frame to the params to be ignored by recall
+                if self.DEBUG_FRAMES: print("saved frame is \t%s" % saved_frame['shader_params'])
+                self.ignored = self.pc.shaders.merge_frames(self.ignored, diff)
+                diff = self.pc.shaders.merge_frames(
+                        self.pc.shaders.get_frame_ignored(saved_frame, self.ignored),
+                        diff
+                )
+                #diff = self.pc.shaders.merge_frames(self.pc.shaders.get_live_frame(), diff)
+                self.pc.shaders.recall_frame(diff)
+                if self.DEBUG_FRAMES:  print("after diff2 is:  \t%s" % diff['shader_params'])
+            if self.DEBUG_FRAMES: print("||||saving frame \t%s" % (diff['shader_params']))
+            self.frames[selected_clip][current_frame_index] = diff #self.get_frame_diff(self.last_frame,current_frame)
+            #backfill frames
+            if self.last_saved_index is not None:
+                if self.DEBUG_FRAMES: print ("last_saved_index is %s, current_frame_index is %s" % (self.last_saved_index, current_frame_index))
+                for i in range(current_frame_index - (self.last_saved_index) ):
+                    if self.DEBUG_FRAMES:print("backfilling frame %s" % ((self.last_saved_index+i+1)%len(self.frames[selected_clip])))
+                    self.frames[selected_clip][(self.last_saved_index+i+1)%len(self.frames[selected_clip])] = diff
+            self.last_saved_index = current_frame_index
+            self.last_frame = self.pc.shaders.get_live_frame() #diff
+        if self.DEBUG_FRAMES:  print("<<<<<<<<<<<<<< frame at %s" % current_frame_index)
+
+    """def recall_frame_index(self, index):
+        self.pc.shaders.recall_frame_params(self.frames[index].copy())"""
+
diff --git a/plugins/ShaderQuickPresetPlugin.py b/plugins/ShaderQuickPresetPlugin.py
new file mode 100644
index 0000000..3724760
--- /dev/null
+++ b/plugins/ShaderQuickPresetPlugin.py
@@ -0,0 +1,84 @@
+import data_centre.plugin_collection
+from data_centre.plugin_collection import ActionsPlugin, SequencePlugin
+import copy
+
+class ShaderQuickPresetPlugin(ActionsPlugin): #,SequencePlugin):
+    disabled = False
+
+    MAX_PRESETS = 8
+
+    def __init__(self, plugin_collection):
+        super().__init__(plugin_collection)
+        self.PRESET_FILE_NAME = 'ShaderQuickPresetPlugin/presets.json'
+
+        self.presets = self.load_presets()
+        print("loaded presets %s" % self.presets)
+
+        self.selected_preset = None
+        self.last_recalled = None
+
+    def load_presets(self):
+        print("trying load presets? %s " % self.PRESET_FILE_NAME)
+        return self.pc.read_json(self.PRESET_FILE_NAME) or ([None]*self.MAX_PRESETS)
+
+    def save_presets(self):
+        self.pc.update_json(self.PRESET_FILE_NAME, self.presets)
+
+    @property
+    def parserlist(self):
+        return [ 
+            ( r"load_presets",              self.load_presets ),
+            ( r"save_presets",              self.save_presets ),
+            ( r"store_next_preset",         self.store_next_preset ),
+            ( r"store_current_preset",      self.store_current_preset ),
+            ( r"switch_to_preset_([0-%i])"%self.MAX_PRESETS,  self.switch_to_preset ),
+            ( r"select_preset_([0-%i])"%self.MAX_PRESETS, self.select_preset ),
+            ( r"clear_current_preset", self.clear_current_preset ),
+        ]
+
+    def store_next_preset(self):
+        res = [i for i, val in enumerate(self.presets) if val == None]
+        if res is None or not res:
+            self.selected_preset += 1
+            self.selected_preset %= self.MAX_PRESETS 
+        else:
+            self.selected_preset = res[0]
+
+        self.store_current_preset()
+
+    def clear_current_preset(self):
+        if self.selected_preset is None:
+            return
+        self.presets[self.selected_preset] = None
+
+        self.save_presets()
+
+    def store_current_preset(self):
+        if self.selected_preset is None: self.selected_preset = 0
+
+        insert_position = self.selected_preset
+        self.presets[insert_position] = self.pc.shaders.get_live_frame()
+        #print ("stored %s at position %s" % (self.presets[insert_position], insert_position))
+        self.selected_preset = insert_position
+        self.last_recalled = insert_position
+
+        self.save_presets()
+
+    def select_preset(self, preset):
+        self.selected_preset = preset
+
+    def switch_to_preset(self, preset):
+        #if preset>len(self.presets):
+        if self.presets[preset] is None:
+            print ("no quick shader preset in slot %s!" % preset)
+            self.selected_preset = preset
+            return
+        print ("switching to preset %s" % preset)
+        self.selected_preset = preset
+
+        self.last_recalled = preset
+        preset = self.presets[preset]
+
+        print ("recalled preset %s" % preset)
+        self.pc.shaders.recall_frame(preset)
+
diff --git a/user_input/midi_input.py b/user_input/midi_input.py
index 9217c76..3afa771 100644
--- a/user_input/midi_input.py
+++ b/user_input/midi_input.py
@@ -12,6 +12,7 @@ class MidiInput(object):
         self.data = data
         self.midi_mappings = data.midi_mappings
         self.midi_device = None
+        self.midi_feedback_device = None
         self.midi_setting = None
         self.port_index = 0
         self.midi_delay = 40
@@ -41,7 +42,13 @@ class MidiInput(object):
                 subport_index = self.port_index % len(midi_device_on_port) 
                 self.midi_device = mido.open_input(midi_device_on_port[subport_index])
                 self.data.midi_status = 'connected'
+                self.data.midi_device_name = self.midi_device.name
                 self.message_handler.set_message('INFO', 'connected to midi device {}'.format(self.midi_device.name))
+                self.midi_mappings = self.data.load_midi_mapping_for_device(self.midi_device.name.split(":")[0])
+                self.midi_output = self.find_output_plugin(midi_device_on_port[subport_index])
+                if self.midi_output:
+                    #self.midi_feedback_device = mido.open_output(midi_device_on_port[subport_index])
+                    self.root.after(self.midi_delay, self.refresh_midi_feedback)
                 self.poll_midi_input()
         elif self.data.midi_status == 'connected':
             self.data.midi_status = 'disconnected'
@@ -98,7 +105,7 @@ class MidiInput(object):
         if 'control' in message_dict:
             mapped_message_name = '{} {}'.format(mapped_message_name,message_dict['control'])
             mapped_message_value = message_dict['value']
-        
+
         if mapped_message_name in self.midi_mappings.keys():
             self.run_action_for_mapped_message(mapped_message_name, mapped_message_value)
         else:
@@ -106,14 +113,19 @@ class MidiInput(object):
 
     def run_action_for_mapped_message(self, message_name, mapped_message_value):
         this_mapping = self.midi_mappings[message_name]
+        #if self.data.function_on and "FN_%s"%self.data.control_mode in this_mapping:
+        #    mode = "FN_%s"%self.data.control_mode
+        #el
         if self.data.control_mode in this_mapping:
             mode = self.data.control_mode
+        #elif self.data.function_on and "FN_DEFAULT" in this_mapping:
+        #    mode = "FN_DEFAULT"
         elif 'DEFAULT' in this_mapping:
             mode = 'DEFAULT'
 
         if self.data.function_on and len(this_mapping[mode]) > 1:
             method_name = this_mapping[mode][1]
-            self.data.function_on = False
+            #self.data.function_on = False
         else:
             method_name = this_mapping[mode][0]
 
@@ -127,4 +139,30 @@ class MidiInput(object):
         ## only update screen if not continuous - seeing if cc can respond faster if not refreshing screen on every action
         if 'continuous' not in message_name:
             self.display.refresh_display()
+            #self.refresh_midi_feedback()
+
+    # Plugins to support MIDI feedback
+
+    def find_output_plugin(self, midi_device):
+        # loop over the plugins
+        # find one that self.supports_midi_feedback(self.midi_device.name):
+        # open the midi device self.midi_feedback_device = mido.open_output(midi_device_on_port[subport_index])
+        print ("Looking for a MIDI Feedback plugin that supports %s..." % midi_device)
+        from data_centre.plugin_collection import MidiFeedbackPlugin
+
+        for p in self.data.plugins.get_plugins(MidiFeedbackPlugin):
+            if p.supports_midi_feedback(midi_device):
+                print ("Found one!  Opening device")
+                p.set_midi_device(mido.open_output(midi_device))
+                return p
+
+        print ("Didn't find one!")
+
+    def refresh_midi_feedback(self):
+
+        self.midi_output.refresh_midi_feedback()
+
+        if self.midi_output and self.data.settings['user_input']['MIDI_INPUT']['value'] == self.midi_setting and self.data.midi_port_index == self.port_index:
+          if self.midi_output.supports_midi_feedback(self.data.midi_device_name):
+            self.root.after(self.midi_delay*5, self.refresh_midi_feedback)
 
diff --git a/video_centre/shaders.py b/video_centre/shaders.py
index 2af10c5..f182334 100644
--- a/video_centre/shaders.py
+++ b/video_centre/shaders.py
@@ -267,3 +267,203 @@ class Shaders(object):
         self.osc_client.send_message("/shader/{}/speed".format(str(layer)), amount )
         self.selected_speed_list[layer] = amount
    
+    # methods for helping dealing with storing and recalling shader parameter frame states
+    def get_live_frame(self):
+        #print("get_live_frame: %s" % self.pc.message_handler.shaders.selected_param_list)
+        import copy #from copy import deepcopy
+        frame = {
+                'selected_shader_slots': [ shader.get('slot',None) for shader in self.selected_shader_list ],
+                'shader_params': copy.deepcopy(self.selected_param_list),
+                'layer_active_status': copy.deepcopy(self.selected_status_list),
+                'feedback_active': self.data.feedback_active,
+                'x3_as_speed': self.data.settings['shader']['X3_AS_SPEED']['value'],
+                'shader_speeds': copy.deepcopy(self.selected_speed_list),
+                'strobe_amount': self.data.settings['shader']['STROBE_AMOUNT']['value'] / 10.0
+        }
+        #print("built frame: %s" % frame['shader_params'])
+        return frame
+
+    def recall_frame_params(self, preset):
+        if preset is None:
+            return
+        #print("recall_frame_params got: %s" % preset.get('shader_params'))
+        for (layer, param_list) in enumerate(preset.get('shader_params',[])):
+            if param_list:
+                for param,value in enumerate(param_list):
+                    #if (ignored is not None and ignored['shader_params'][layer][param] is not None):
+                    #    print ("ignoring %s,%s because value is %s" % (layer,param,ignored['shader_params'][layer][param]))
+                    #    continue
+                    if (value is not None):
+                      #print("recalling layer %s param %s: value %s" % (layer,param,value))
+                      self.data.plugins.actions.call_method_name('set_the_shader_param_%s_layer_%s_continuous' % (param,layer), value)
+
+        if preset.get('feedback_active') is not None:
+            self.data.feedback_active = preset.get('feedback_active',self.data.feedback_active)
+            if self.data.feedback_active:
+                self.data.plugins.actions.call_method_name('enable_feedback')
+            else:
+                self.data.plugins.actions.call_method_name('disable_feedback')
+
+        if preset.get('x3_as_speed') is not None:
+            self.data.settings['shader']['X3_AS_SPEED']['value'] = preset.get('x3_as_speed',self.data.settings['shader']['X3_AS_SPEED']['value'])
+            """if self.data.settings['shader']['X3_AS_SPEED']['value']:
+                self.data.plugins.actions.call_method_name('enable_x3_as_speed')
+            else:
+                self.data.plugins.actions.call_method_name('disable_x3_as_speed')"""
+
+        for (layer, speed) in enumerate(preset.get('shader_speeds',[])):
+            if speed is not None:
+                self.data.plugins.actions.call_method_name('set_shader_speed_layer_%s_amount' % layer, speed)
+
+        if preset.get('strobe_amount') is not None:
+            self.data.plugins.actions.set_strobe_amount_continuous(preset.get('strobe_amount'))
+
+    def recall_frame(self, preset):
+
+        self.data.settings['shader']['X3_AS_SPEED']['value'] = preset.get('x3_as_speed')
+
+        # x3_as_speed affects preset recall, so do that first
+        self.recall_frame_params(preset)
+
+        for (layer, slot) in enumerate(preset.get('selected_shader_slots',[])):
+            if slot is not None:
+                #print("setting layer %s to slot %s" % (layer, slot))
+                self.data.plugins.actions.call_method_name('play_shader_%s_%s' % (layer, slot))
+
+        for (layer, active) in enumerate(preset.get('layer_active_status',[])):
+            # print ("got %s layer with status %s " % (layer,active))
+            if active=='▶':
+                self.data.plugins.actions.call_method_name('start_shader_layer_%s' % layer)
+            else:
+                self.data.plugins.actions.call_method_name('stop_shader_layer_%s' % layer)
+
+    DEBUG_FRAMES = False
+
+    # overlay frame2 on frame1
+    def merge_frames(self, frame1, frame2):
+        from copy import deepcopy
+        f = deepcopy(frame1) #frame1.copy()
+        if self.DEBUG_FRAMES:  print("merge_frames: got frame1\t%s" % frame1)
+        if self.DEBUG_FRAMES:  print("merge_frames: got frame2\t%s" % frame2)
+        for i,f2 in enumerate(frame2['shader_params']):
+            for i2,p in enumerate(f2):
+                if p is not None:
+                    f['shader_params'][i][i2] = p
+
+        if frame2['feedback_active'] is not None:
+            f['feedback_active'] = frame2['feedback_active']
+
+        if frame2['x3_as_speed'] is not None:
+            f['x3_as_speed'] = frame2['x3_as_speed']
+
+        if f.get('shader_speeds') is None:
+            f['shader_speeds'] = frame2.get('shader_speeds')
+        else:
+            for i,s in enumerate(frame2['shader_speeds']):
+                if s is not None:
+                    f['shader_speeds'][i] = s
+
+        if frame2.get('strobe_amount'):
+            f['strobe_amount'] = frame2.get('strobe_amount')
+
+        if self.DEBUG_FRAMES:  print("merge_frames: got return\t%s" % f)
+        return f
+
+    def get_frame_ignored(self, frame, ignored):
+        from copy import deepcopy
+        f = deepcopy(frame) #frame1.copy()
+        if self.DEBUG_FRAMES:  print("get_frame_ignored: got frame\t%s" % frame)
+        for i,f2 in enumerate(frame['shader_params']):
+            for i2,p in enumerate(f2):
+                if ignored['shader_params'][i][i2] is not None:
+                    f['shader_params'][i][i2] = None
+        if ignored.get('feedback_active') is not None:
+            f['feedback_active'] = None
+        if ignored.get('x3_as_speed') is not None:
+            f['x3_as_speed'] = None
+        if ignored.get('shader_speeds') is not None and frame.get('shader_speeds'):
+          for i,s in enumerate(frame.get('shader_speeds')):
+            if ignored['shader_speeds'][i] is not None:
+                f['shader_speeds'][i] = None
+        if ignored.get('strobe_amount') is not None:
+            f['strobe_amount'] = None
+        if self.DEBUG_FRAMES:  print("get_frame_ignored: got return\t%s" % f)
+        return f
+
+    def is_frame_empty(self, frame):
+        #from copy import deepcopy
+        #f = deepcopy(frame) #frame1.copy()
+        if self.DEBUG_FRAMES:  print("is_frame_empty: got frame\t%s" % frame)
+
+        if frame.get('feedback_active') is not None:
+            return False
+        if frame.get('x3_as_speed') is not None:
+            return False
+        if frame.get('strobe_amount') is not None:
+            return False
+
+        for i,f in enumerate(frame['shader_params']):
+            for i2,p in enumerate(f):
+                if p is not None: #ignored['shader_params'][i][i2] is not None:
+                    return False
+
+        if frame.get('shader_speeds') is not None:
+          for i,f in enumerate(frame['shader_speeds']):
+            if f is not None:
+                return False
+
+        if self.DEBUG_FRAMES:  print("is_frame_empty: got return true")
+        return True
+
+
+    def get_frame_diff(self, last_frame, current_frame):
+        if not last_frame: return current_frame
+
+        if self.DEBUG_FRAMES:
+            print(">>>>get_frame_diff>>>>")
+            print("last_frame: \t%s" % last_frame['shader_params'])
+            print("current_frame: \t%s" % current_frame['shader_params'])
+
+        param_values = [[None]*4,[None]*4,[None]*4]
+        for layer,params in enumerate(current_frame.get('shader_params',[[None]*4]*3)):
+            #if self.DEBUG_FRAMES:  print("got layer %s params: %s" % (layer, params))
+            for param,p in enumerate(params):
+                if p is not None and p != last_frame.get('shader_params')[layer][param]:
+                    if self.DEBUG_FRAMES: print("setting layer %s param %s to %s" % (layer,param,p))
+                    param_values[layer][param] = p
+
+        if current_frame['feedback_active'] is not None and last_frame['feedback_active'] != current_frame['feedback_active']:
+            feedback_active = current_frame['feedback_active']
+        else:
+            feedback_active = None
+
+        if current_frame['x3_as_speed'] is not None and last_frame['x3_as_speed'] != current_frame['x3_as_speed']:
+            x3_as_speed = current_frame['x3_as_speed']
+        else:
+            x3_as_speed = None
+
+        speed_values = [None]*3
+        for layer,param in enumerate(current_frame.get('shader_speeds',[None]*3)):
+            if param is not None and param != last_frame['shader_speeds'][layer]:
+                speed_values[layer] = param
+
+        if current_frame['strobe_amount'] is not None and last_frame['strobe_amount'] != current_frame['strobe_amount']:
+            strobe_amount = current_frame['strobe_amount']
+        else:
+            strobe_amount = None
+
+        if self.DEBUG_FRAMES: 
+            print("param_values is\t%s" % param_values)
+            print("speed_values is\t%s" % speed_values)
+
+        diff = { 
+                'shader_params': param_values, 
+                'feedback_active': feedback_active,
+                'x3_as_speed': x3_as_speed,
+                'shader_speeds': speed_values,
+                'strobe_amount': strobe_amount,
+        }
+        if self.DEBUG_FRAMES: print("returning\t%s\n^^^^" % diff['shader_params'])
+
+        return diff
+