diff --git a/.gitmodules b/.gitmodules
index c8f8431..4833330 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -11,3 +11,6 @@
 [submodule "bash/liquidprompt"]
 	path = bash/liquidprompt
 	url = https://github.com/nojhan/liquidprompt
+[submodule "cron/blackcheck"]
+	path = cron/blackcheck
+	url = https://github.com/Stunkymonkey/blackcheck.git
diff --git a/cron/blackcheck b/cron/blackcheck
new file mode 160000
index 0000000..fb5af1f
--- /dev/null
+++ b/cron/blackcheck
@@ -0,0 +1 @@
+Subproject commit fb5af1f8bb72c987c49c77ea8ed558196765f011
diff --git a/cron/blackcheck.py b/cron/blackcheck.py
deleted file mode 100755
index 1a41758..0000000
--- a/cron/blackcheck.py
+++ /dev/null
@@ -1,41 +0,0 @@
-from PIL import Image
-from optparse import OptionParser
-# import sys
-
-parser = OptionParser()
-parser.add_option("-q", "--quiet", action="store_false", dest="verbose",
-                  default=True, help="don't print status messages to stdout")
-parser.add_option("-i", "--image", type="string", dest="imagename",
-                  help="Name of Image")
-parser.add_option("-d", "--diff", type="string", dest="diff",
-                  default=0, help="maximum difference between Red, Green, Blue")
-
-(options, args) = parser.parse_args()
-
-if (options.imagename is None):
-    parser.error("no image entered")
-
-diff = int(options.diff)
-img_path = options.imagename
-
-
-def is_grey_scale(img_path):
-    try:
-        im = Image.open(img_path).convert('RGB')
-    except (FileNotFoundError):
-        print ("Image not found")
-        quit()
-    w, h = im.size
-    for i in range(w):
-        for j in range(h):
-            r, g, b = im.getpixel((i, j))
-            if ((abs(r - g) > diff) &
-                    (abs(r - b) > diff) &
-                    (abs(b - g) > diff)):
-                return False
-    return True
-
-if (bool(options.verbose) == False):
-    is_grey_scale(img_path)
-else:
-    print (is_grey_scale(img_path))
diff --git a/cron/blackcheck.py b/cron/blackcheck.py
new file mode 120000
index 0000000..a16ef83
--- /dev/null
+++ b/cron/blackcheck.py
@@ -0,0 +1 @@
+/home/felix/code/python/blackcheck/blackcheck.py
\ No newline at end of file
diff --git a/cron/webcam.sh b/cron/webcam.sh
index 95564b8..4e0f0c7 100755
--- a/cron/webcam.sh
+++ b/cron/webcam.sh
@@ -7,7 +7,7 @@ basename=$(dirname $(readlink -f $0))
 
 mkdir -p $path
 streamer -q -f jpeg -s $size -o $path/$now.jpeg -r 1
-grey="$(python3 $basename/blackcheck.py -i $path/$now.jpeg -d 10)"
+grey="$($basename/blackcheck/blackcheck.py -i $path/$now.jpeg -d 10)"
 if [ "$grey" = "True" ] ; then
 	mv $path/$now.jpeg $path/black/$now.jpeg
 fi