diff --git a/.gitignore b/.gitignore
index c9fc29f..39b871c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 ### FIREBASE STUFF ###
 hackku-*.json
 
+.env
 
 # Created by https://www.gitignore.io/api/git,python,opencv,pycharm,visualstudio,visualstudiocode
 # Edit at https://www.gitignore.io/?templates=git,python,opencv,pycharm,visualstudio,visualstudiocode
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index afb0423..9652408 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -2,8 +2,10 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="f410c5c2-3ffe-4260-93eb-e3d83256d263" name="Default Changelist" comment="">
+      <change beforePath="$PROJECT_DIR$/.gitignore" beforeDir="false" afterPath="$PROJECT_DIR$/.gitignore" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/image_diff_color.py" beforeDir="false" afterPath="$PROJECT_DIR$/image_tools.py" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/camera.py" beforeDir="false" afterPath="$PROJECT_DIR$/camera.py" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/image_tools.py" beforeDir="false" afterPath="$PROJECT_DIR$/image_tools.py" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/index.py" beforeDir="false" afterPath="$PROJECT_DIR$/index.py" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
@@ -16,8 +18,8 @@
       <file pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/index.py">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="270">
-              <caret line="18" column="46" selection-start-line="18" selection-start-column="46" selection-end-line="18" selection-end-column="46" />
+            <state relative-caret-position="225">
+              <caret line="24" column="5" selection-start-line="24" selection-start-column="5" selection-end-line="24" selection-end-column="5" />
               <folding>
                 <element signature="e#0#21#0" expanded="true" />
               </folding>
@@ -25,6 +27,11 @@
           </provider>
         </entry>
       </file>
+      <file pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/lib/test-images/lot-3-cars.jpg">
+          <provider selected="true" editor-type-id="images" />
+        </entry>
+      </file>
       <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/lib/test-images/lot-5-cars-B.jpg">
           <provider selected="true" editor-type-id="images" />
@@ -33,8 +40,8 @@
       <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/camera.py">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="165">
-              <caret line="11" column="14" selection-start-line="11" selection-start-column="14" selection-end-line="11" selection-end-column="14" />
+            <state relative-caret-position="105">
+              <caret line="7" column="44" selection-start-line="7" selection-start-column="44" selection-end-line="7" selection-end-column="44" />
               <folding>
                 <element signature="e#0#13#0" expanded="true" />
               </folding>
@@ -45,8 +52,8 @@
       <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/.gitignore">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="15">
-              <caret line="1" column="13" selection-start-line="1" selection-start-column="13" selection-end-line="1" selection-end-column="13" />
+            <state relative-caret-position="45">
+              <caret line="3" column="4" selection-start-line="3" selection-start-column="4" selection-end-line="3" selection-end-column="4" />
             </state>
           </provider>
         </entry>
@@ -54,8 +61,35 @@
       <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/image_tools.py">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="-379">
-              <caret line="27" column="1" selection-start-line="27" selection-start-column="1" selection-end-line="27" selection-end-column="1" />
+            <state relative-caret-position="270">
+              <caret line="18" column="35" lean-forward="true" selection-start-line="18" selection-start-column="35" selection-end-line="18" selection-end-column="35" />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/example.env">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="30">
+              <caret line="2" column="13" selection-start-line="2" selection-end-line="2" selection-end-column="13" />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/.env">
+          <provider selected="true" editor-type-id="text-editor">
+            <state>
+              <caret column="16" selection-start-column="16" selection-end-column="16" />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/config.py">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="75">
+              <caret line="5" lean-forward="true" selection-start-line="5" selection-end-line="5" />
             </state>
           </provider>
         </entry>
@@ -75,8 +109,12 @@
   <component name="IdeDocumentHistory">
     <option name="CHANGED_PATHS">
       <list>
-        <option value="$PROJECT_DIR$/.gitignore" />
         <option value="$PROJECT_DIR$/image_diff_color.py" />
+        <option value="$PROJECT_DIR$/image_tools.py" />
+        <option value="$PROJECT_DIR$/.gitignore" />
+        <option value="$PROJECT_DIR$/config.py" />
+        <option value="$PROJECT_DIR$/example.env" />
+        <option value="$PROJECT_DIR$/.env" />
         <option value="$PROJECT_DIR$/camera.py" />
         <option value="$PROJECT_DIR$/index.py" />
       </list>
@@ -176,49 +214,70 @@
     <entry file="file://$PROJECT_DIR$/lib/test-images/lot-empty.jpg">
       <provider selected="true" editor-type-id="images" />
     </entry>
-    <entry file="file://$PROJECT_DIR$/lib/test-images/lot-3-cars.jpg">
-      <provider selected="true" editor-type-id="images" />
-    </entry>
     <entry file="file://$PROJECT_DIR$/test.jpg">
       <provider selected="true" editor-type-id="images" />
     </entry>
     <entry file="file://$PROJECT_DIR$/capture.jpg">
       <provider selected="true" editor-type-id="images" />
     </entry>
+    <entry file="file://$PROJECT_DIR$/lib/test-images/lot-1-car.jpg">
+      <provider selected="true" editor-type-id="images" />
+    </entry>
+    <entry file="file://$PROJECT_DIR$/lib/test-images/lot-5-cars-B.jpg">
+      <provider selected="true" editor-type-id="images" />
+    </entry>
+    <entry file="file://$PROJECT_DIR$/lib/test-images/lot-3-cars.jpg">
+      <provider selected="true" editor-type-id="images" />
+    </entry>
     <entry file="file://$PROJECT_DIR$/.gitignore">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="15">
-          <caret line="1" column="13" selection-start-line="1" selection-start-column="13" selection-end-line="1" selection-end-column="13" />
+        <state relative-caret-position="45">
+          <caret line="3" column="4" selection-start-line="3" selection-start-column="4" selection-end-line="3" selection-end-column="4" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/config.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="75">
+          <caret line="5" lean-forward="true" selection-start-line="5" selection-end-line="5" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/.env">
+      <provider selected="true" editor-type-id="text-editor">
+        <state>
+          <caret column="16" selection-start-column="16" selection-end-column="16" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/image_tools.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="270">
+          <caret line="18" column="35" lean-forward="true" selection-start-line="18" selection-start-column="35" selection-end-line="18" selection-end-column="35" />
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/camera.py">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="165">
-          <caret line="11" column="14" selection-start-line="11" selection-start-column="14" selection-end-line="11" selection-end-column="14" />
+        <state relative-caret-position="105">
+          <caret line="7" column="44" selection-start-line="7" selection-start-column="44" selection-end-line="7" selection-end-column="44" />
           <folding>
             <element signature="e#0#13#0" expanded="true" />
           </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/image_tools.py">
+    <entry file="file://$PROJECT_DIR$/example.env">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="-379">
-          <caret line="27" column="1" selection-start-line="27" selection-start-column="1" selection-end-line="27" selection-end-column="1" />
+        <state relative-caret-position="30">
+          <caret line="2" column="13" selection-start-line="2" selection-end-line="2" selection-end-column="13" />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/lib/test-images/lot-1-car.jpg">
-      <provider selected="true" editor-type-id="images" />
-    </entry>
-    <entry file="file://$PROJECT_DIR$/lib/test-images/lot-5-cars-B.jpg">
-      <provider selected="true" editor-type-id="images" />
-    </entry>
     <entry file="file://$PROJECT_DIR$/index.py">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="270">
-          <caret line="18" column="46" selection-start-line="18" selection-start-column="46" selection-end-line="18" selection-end-column="46" />
+        <state relative-caret-position="225">
+          <caret line="24" column="5" selection-start-line="24" selection-start-column="5" selection-end-line="24" selection-end-column="5" />
           <folding>
             <element signature="e#0#21#0" expanded="true" />
           </folding>
diff --git a/camera.py b/camera.py
index feef3f3..2603b4e 100644
--- a/camera.py
+++ b/camera.py
@@ -2,10 +2,10 @@ import pygame
 import pygame.camera
 
 
-def capture():
+def capture(camera_stream = "/dev/video4"):
     pygame.camera.init()
     pygame.camera.list_cameras()
-    cam = pygame.camera.Camera('/dev/video4', (640, 480))
+    cam = pygame.camera.Camera(camera_stream, (640, 480))
     cam.start()
     img = cam.get_image()
     pygame.image.save(img, './capture.jpg')
diff --git a/config.py b/config.py
new file mode 100644
index 0000000..97745a9
--- /dev/null
+++ b/config.py
@@ -0,0 +1,5 @@
+from dotenv import load_dotenv
+
+
+def bootstrap(envfile='./.env'):
+    load_dotenv(dotenv_path=envfile)
diff --git a/example.env b/example.env
new file mode 100644
index 0000000..6c00745
--- /dev/null
+++ b/example.env
@@ -0,0 +1,6 @@
+POLL_FREQUENCY=15
+FIREBASE_CERT_FILE="hackku-ffffffffffff.json"
+CAMERA_DEVICE="/dev/video4"
+LOT_NAME="Lot1"
+REFERENCE_IMAGE="./lib/test-images/lot-empty.jpg"
+E_HAT_TRIGGER_LEVEL=4
\ No newline at end of file
diff --git a/image_tools.py b/image_tools.py
index c97c1b6..d0954de 100644
--- a/image_tools.py
+++ b/image_tools.py
@@ -1,5 +1,3 @@
-from PIL import Image
-
 def average_color(x, y, n, image):
     r, g, b = 0, 0, 0
     count = 0
@@ -21,64 +19,3 @@ def differences(rgb_tuple1, rgb_tuple2):
 def threshold(diff_tuple, trigger=4):
     dr, dg, db = diff_tuple
     return (((( dr**4 + dg**4 + db**4 ) / 3)**0.25) > trigger)        # Thanks to Thomas Atkins, math whiz
-
-#
-# reference_image = Image.open('./lib/test-images/lot-empty.jpg').load()
-# compare_image = Image.open('./lib/test-images/lot-1-car.jpg').load()
-#
-# stall_1 = {
-#     'location': (54, 79, 109),
-#     'reference': average_color(54, 79, 109, reference_image),
-#     'compare': average_color(54, 79, 109, compare_image)
-# }
-#
-# stall_2 = {
-#     'location': (186, 81, 116),
-#     'reference': average_color(186, 81, 116, reference_image),
-#     'compare': average_color(186, 81, 116, compare_image)
-# }
-#
-# stall_3 = {
-#     'location': (317, 71, 127),
-#     'reference': average_color(317, 71, 127, reference_image),
-#     'compare': average_color(317, 71, 127, compare_image)
-# }
-#
-# stall_4 = {
-#     'location': (469, 76, 100),
-#     'reference': average_color(469, 76, 100, reference_image),
-#     'compare': average_color(469, 76, 100, compare_image)
-# }
-#
-# stall_5 = {
-#     'location': (27, 237, 119),
-#     'reference': average_color(27, 237, 119, reference_image),
-#     'compare': average_color(27, 237, 119, compare_image)
-# }
-#
-# stall_6 = {
-#     'location': (172, 240, 130),
-#     'reference': average_color(172, 240, 130, reference_image),
-#     'compare': average_color(172, 240, 130, compare_image)
-# }
-#
-# stall_7 = {
-#     'location': (317, 234, 144),
-#     'reference': average_color(317, 234, 144, reference_image),
-#     'compare': average_color(317, 234, 144, compare_image)
-# }
-#
-# stall_8 = {
-#     'location': (481, 233, 112),
-#     'reference': average_color(481, 233, 112, reference_image),
-#     'compare': average_color(481, 233, 112, compare_image)
-# }
-#
-# print(threshold(differences(stall_1['reference'], stall_1['compare'])))
-# print(threshold(differences(stall_2['reference'], stall_2['compare'])))
-# print(threshold(differences(stall_3['reference'], stall_3['compare'])))
-# print(threshold(differences(stall_4['reference'], stall_4['compare'])))
-# print(threshold(differences(stall_5['reference'], stall_5['compare'])))
-# print(threshold(differences(stall_6['reference'], stall_6['compare'])))
-# print(threshold(differences(stall_7['reference'], stall_7['compare'])))
-# print(threshold(differences(stall_8['reference'], stall_8['compare'])))
diff --git a/index.py b/index.py
index c1458ba..2a196ad 100644
--- a/index.py
+++ b/index.py
@@ -2,31 +2,44 @@ import firebase_admin
 from firebase_admin import credentials
 from firebase_admin import firestore
 from PIL import Image
+import time, os
 
 import camera
 import image_tools
+import config
+
+config.bootstrap()
 
 # Use a service account
-cred = credentials.Certificate('./hackku-272b6e79b2a9.json')
+cred = credentials.Certificate(os.getenv('FIREBASE_CERT_FILE'))
 firebase_admin.initialize_app(cred)
 
 db = firestore.client()
 
-doc_ref_lot1 = db.collection(u'Lot1')
+doc_ref_lot1 = db.collection(os.getenv('LOT_NAME'))
+
+
+def poll():
+    # Take the picture
+    img = Image.open(camera.capture(os.getenv('CAMERA_DEVICE'))).load()
+    #img = Image.open('./lib/test-images/lot-empty.jpg').load()
+    reference = Image.open(os.getenv('REFERENCE_IMAGE')).load()
+
+    stalls = doc_ref_lot1.get()
 
-# Take the picture
-# img = Image.open(camera.capture()).load()
-img = Image.open('./lib/test-images/lot-3-cars.jpg').load()
-reference = Image.open('./lib/test-images/lot-empty.jpg').load()
+    for stall in stalls:
+        stall_obj = stall.to_dict()
+        color_reference = image_tools.average_color(stall_obj['locationX'], stall_obj['locationY'], stall_obj['sideN'], reference)
+        color_compare = image_tools.average_color(stall_obj['locationX'], stall_obj['locationY'], stall_obj['sideN'], img)
+        stall_occupied = image_tools.threshold(image_tools.differences(color_reference, color_compare), float(os.getenv('E_HAT_TRIGGER_LEVEL')))
+        stall_obj['open'] = not stall_occupied
+        print(stall.id)
+        db.collection(u'Lot1').document(stall.id).set( stall_obj )
 
-stalls = doc_ref_lot1.get()
 
-for stall in stalls:
-    #print(u'{} => {}'.format(stall.id, stall.to_dict()))
-    stall_obj = stall.to_dict()
-    color_reference = image_tools.average_color(stall_obj['locationX'], stall_obj['locationY'], stall_obj['sideN'], reference)
-    color_compare = image_tools.average_color(stall_obj['locationX'], stall_obj['locationY'], stall_obj['sideN'], img)
-    stall_occupied = image_tools.threshold(image_tools.differences(color_reference, color_compare))
-    stall_obj['open'] = not stall_occupied
+start_time = time.time()
 
-    db.collection(u'Lot1').document(stall.id).set( stall_obj )
+while True:
+    poll()
+    poll_time = float(os.getenv('POLL_FREQUENCY'))
+    time.sleep(poll_time - ((time.time() - start_time) % poll_time))