diff --git a/ledd/controller.py b/ledd/controller.py
index 2850f6c..d13321c 100644
--- a/ledd/controller.py
+++ b/ledd/controller.py
@@ -14,13 +14,13 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+import errno
 import logging
 import time
-import errno
 
+import smbus
 from sqlalchemy import Column, Integer, String
 from sqlalchemy.orm import relationship, reconstructor
-import smbus
 
 from . import Base
 
@@ -51,7 +51,7 @@ class Controller(Base):
     i2c_device = Column(Integer)
     address = Column(String)
     stripes = relationship("Stripe", backref="controller")
-    _pwm_freq = Column("pwm_freq", Integer)
+    pwm_freq = Column("pwm_freq", Integer)
 
     """
     A controller controls a number of stripes.
@@ -62,12 +62,14 @@ class Controller(Base):
         self._mode = None
         self.bus = smbus.SMBus(self.i2c_device)
         self._address = int(self.address, 16)
+        self._pwm_freq = self.pwm_freq
 
     @reconstructor
     def init_on_load(self):
         self._mode = None
         self.bus = smbus.SMBus(self.i2c_device)
         self._address = int(self.address, 16)
+        self._pwm_freq = self.pwm_freq
 
     def __repr__(self):
         return "<Controller stripes={} cid={}>".format(len(self.stripes), self.id)
@@ -141,3 +143,6 @@ class Controller(Base):
             'i2c_device': self.i2c_device,
             'mode': self.mode
         }
+
+    def close(self):
+        self.bus.close()
diff --git a/ledd/daemon.py b/ledd/daemon.py
index 62687d5..016ae69 100644
--- a/ledd/daemon.py
+++ b/ledd/daemon.py
@@ -14,26 +14,26 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-import logging
-import configparser
-import os
-import sys
 import asyncio
-import signal
+import configparser
 import errno
+import logging
+import os
+import signal
+import sys
 
-from sqlalchemy import create_engine
+import spectra
 from jsonrpc import JSONRPCResponseManager, dispatcher
 from jsonrpc.exceptions import JSONRPCError, JSONRPCInvalidParams
-import spectra
+from sqlalchemy import create_engine
 from sqlalchemy.exc import OperationalError
 from sqlalchemy.orm.exc import NoResultFound
 
 from ledd import VERSION
+from ledd.controller import Controller
 from ledd.effectstack import EffectStack
 from ledd.models import Meta
 from ledd.stripe import Stripe
-from ledd.controller import Controller
 from . import Base, session
 
 log = logging.getLogger(__name__)
@@ -94,6 +94,10 @@ def run():
         loop.run_forever()
     except (KeyboardInterrupt, SystemExit):
         log.info("Exiting")
+
+        for c in controller:
+            c.close()
+
         try:
             os.remove("ledd.pid")
         except FileNotFoundError:
@@ -138,6 +142,7 @@ def start_effect(**kwargs):
     """
     Part of the Color API. Used to start a specific effect.
     Required parameters: stripe IDs: sids; effect id: eid, effect options: eopt
+    :param kwargs:
     """
 
     if "sids" not in kwargs or "eid" not in kwargs or "eopt" not in kwargs:
diff --git a/ledd/effectstack.py b/ledd/effectstack.py
index 6100135..0b8e029 100644
--- a/ledd/effectstack.py
+++ b/ledd/effectstack.py
@@ -1,3 +1,19 @@
+# LEDD Project
+# Copyright (C) 2015 LEDD Team
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 import asyncio
 
 from ledd.effects.fadeeffect import FadeEffect