diff --git a/led-badge-12x48.py b/led-badge-12x48.py
deleted file mode 120000
index db1bcd2..0000000
--- a/led-badge-12x48.py
+++ /dev/null
@@ -1 +0,0 @@
-led-badge-11x44.py
\ No newline at end of file
diff --git a/lednamebadge.py b/lednamebadge.py
index 71a09bf..d7d5d90 100755
--- a/lednamebadge.py
+++ b/lednamebadge.py
@@ -225,6 +225,7 @@ class SimpleTextAndIcons:
               u"ÀÅÄÉÈÊËÖÔÜÛÙŸ"
 
     char_offsets = {}
+    pass
     for i in range(len(charmap)):
         char_offsets[charmap[i]] = 11 * i
         # print(i, charmap[i], char_offset[charmap[i]])
@@ -522,7 +523,7 @@ or
 def split_to_ints(list_str):
     return tuple([int(x) for x in re.split(r'[\s,]+', list_str)])
 
-if __name__ == '__main__':
+def main():
     parser = argparse.ArgumentParser(formatter_class=argparse.RawDescriptionHelpFormatter,
                                      description='Upload messages or graphics to a 11x44 led badge via USB HID.\nVersion %s from https://github.com/jnweiger/led-badge-ls32\n -- see there for more examples and for updates.' % __version,
                                      epilog='Example combining image and text:\n sudo %s "I:HEART2:you"' % sys.argv[0])
@@ -606,3 +607,7 @@ if __name__ == '__main__':
         buf.extend((0,) * (64 - need_padding))
 
     LedNameBadge.write(buf)
+
+
+if __name__ == '__main__':
+    main()
\ No newline at end of file
diff --git a/tests/test_lednamebadge_create.py b/tests/test_lednamebadge_create.py
new file mode 100644
index 0000000..12de16a
--- /dev/null
+++ b/tests/test_lednamebadge_create.py
@@ -0,0 +1,35 @@
+import datetime
+from array import array
+from unittest import TestCase
+
+from lednamebadge import SimpleTextAndIcons as testee
+
+
+class Test(TestCase):
+    def test_bitmap_png(self):
+        creator = testee()
+        buf = creator.bitmap("resources/bitpatterns.png")
+        self.assertEqual((array('B',
+                                [128, 64, 32, 16, 8, 4, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128, 64, 32, 0, 1, 2, 3,
+                                 4, 5, 15, 31, 63, 127, 255]),
+                          3), buf)
+
+    def test_bitmap_text(self):
+        creator = testee()
+        buf = creator.bitmap("/:HEART2:\\")
+        self.assertEqual((array('B',
+                                [0, 0, 2, 6, 12, 24, 48, 96, 192, 128, 0, 0, 12, 30, 63, 63, 63, 31, 15, 7, 3, 1, 0, 96,
+                                 240, 248, 248, 248, 240, 224, 192, 128, 0, 0, 128, 192, 96, 48, 24, 12, 6, 2, 0, 0]),
+                          4), buf)
+
+    def test_preload(self):
+        creator = testee()
+        self.assertFalse(creator.are_preloaded_unused())
+        creator.add_preload_img("resources/bitpatterns.png")
+        self.assertTrue(creator.are_preloaded_unused())
+        buf = creator.bitmap("\x01")
+        self.assertFalse(creator.are_preloaded_unused())
+        self.assertEqual((array('B',
+                                [128, 64, 32, 16, 8, 4, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128, 64, 32, 0, 1, 2, 3,
+                                 4, 5, 15, 31, 63, 127, 255]),
+                          3), buf)
diff --git a/tests/test_lednamebadge_write.py b/tests/test_lednamebadge_write.py
index efd8c0f..af62a59 100644
--- a/tests/test_lednamebadge_write.py
+++ b/tests/test_lednamebadge_write.py
@@ -1,9 +1,8 @@
 import datetime
-import importlib
 from array import array
 from unittest import TestCase
 
-testee = importlib.import_module("led-badge-11x44")
+from lednamebadge import LedNameBadge as testee
 
 
 class Test(TestCase):
@@ -11,72 +10,44 @@ class Test(TestCase):
         self.test_date = datetime.datetime(2022, 11, 13, 17, 38, 24)
 
     def test_header_2msgs(self):
-        buf = testee.LedNameBadge.header((6, 7), (5, 3), (6, 2), (0, 1), (1, 0), 75, self.test_date)
+        buf = testee.header((6, 7), (5, 3), (6, 2), (0, 1), (1, 0), 75, self.test_date)
         self.assertEqual([119, 97, 110, 103, 0, 16, 254, 1, 70, 34, 34, 34, 34, 34, 34, 34, 0, 6, 0, 7, 0, 0, 0, 0, 0,
                           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 22, 11, 13, 17, 38, 24, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
                           0, 0, 0, 0, 0, 0, 0, 0, 0, 0], buf)
 
     def test_header_8msgs(self):
-        buf = testee.LedNameBadge.header((1, 2, 3, 4, 5, 6, 7, 8),
-                                         (1, 2, 3, 4, 5, 6, 7, 8),
-                                         (1, 2, 3, 4, 5, 6, 7, 8),
-                                         (0, 1, 0, 1, 0, 1, 0, 1),
-                                         (1, 0, 1, 0, 1, 0, 1, 0),
-                                         25,
-                                         self.test_date)
+        buf = testee.header((1, 2, 3, 4, 5, 6, 7, 8),
+                            (1, 2, 3, 4, 5, 6, 7, 8),
+                            (1, 2, 3, 4, 5, 6, 7, 8),
+                            (0, 1, 0, 1, 0, 1, 0, 1),
+                            (1, 0, 1, 0, 1, 0, 1, 0),
+                            25,
+                            self.test_date)
         self.assertEqual([119, 97, 110, 103, 0, 64, 170, 85, 1, 18, 35, 52, 69, 86, 103, 120, 0, 1, 0, 2, 0, 3, 0, 4, 0,
                           5, 0, 6, 0, 7, 0, 8, 0, 0, 0, 0, 0, 0, 22, 11, 13, 17, 38, 24, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
                           0, 0, 0, 0, 0, 0, 0, 0, 0, 0], buf)
 
     def test_header_brightness(self):
-        buf = testee.LedNameBadge.header((6,), (4,), (4,), (0,), (0,), 25, self.test_date)
+        buf = testee.header((6,), (4,), (4,), (0,), (0,), 25, self.test_date)
         self.assertEqual([119, 97, 110, 103, 0, 64, 0, 0, 52, 52, 52, 52, 52, 52, 52, 52, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0,
                           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 22, 11, 13, 17, 38, 24, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
                           0, 0, 0, 0, 0, 0, 0, 0, 0], buf)
-        buf = testee.LedNameBadge.header((6,), (4,), (4,), (0,), (0,), 26, self.test_date)
+        buf = testee.header((6,), (4,), (4,), (0,), (0,), 26, self.test_date)
         self.assertEqual([119, 97, 110, 103, 0, 32, 0, 0, 52, 52, 52, 52, 52, 52, 52, 52, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0,
                           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 22, 11, 13, 17, 38, 24, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
                           0, 0, 0, 0, 0, 0, 0, 0, 0], buf)
-        buf = testee.LedNameBadge.header((6,), (4,), (4,), (0,), (0,), 60, self.test_date)
+        buf = testee.header((6,), (4,), (4,), (0,), (0,), 60, self.test_date)
         self.assertEqual([119, 97, 110, 103, 0, 16, 0, 0, 52, 52, 52, 52, 52, 52, 52, 52, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0,
                           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 22, 11, 13, 17, 38, 24, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
                           0, 0, 0, 0, 0, 0, 0, 0, 0], buf)
-        buf = testee.LedNameBadge.header((6,), (4,), (4,), (0,), (0,), 80, self.test_date)
+        buf = testee.header((6,), (4,), (4,), (0,), (0,), 80, self.test_date)
         self.assertEqual([119, 97, 110, 103, 0, 0, 0, 0, 52, 52, 52, 52, 52, 52, 52, 52, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0,
                           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 22, 11, 13, 17, 38, 24, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
                           0, 0, 0, 0, 0, 0, 0, 0, 0], buf)
 
     def test_header_date(self):
-        buf1 = testee.LedNameBadge.header((6,), (4,), (4,), (0,), (0,), 100, self.test_date)
-        buf2 = testee.LedNameBadge.header((6,), (4,), (4,), (0,), (0,), 100)
+        buf1 = testee.header((6,), (4,), (4,), (0,), (0,), 100, self.test_date)
+        buf2 = testee.header((6,), (4,), (4,), (0,), (0,), 100)
         self.assertEqual(buf1[0:38], buf2[0:38])
         self.assertEqual(buf1[38 + 6:], buf2[38 + 6:])
         self.assertNotEqual(buf1[38:38 + 6], buf2[38:38 + 6])
-
-    def test_bitmap_png(self):
-        creator = testee.SimpleTextAndIcons()
-        buf = creator.bitmap("resources/bitpatterns.png")
-        self.assertEqual((array('B',
-                                [128, 64, 32, 16, 8, 4, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128, 64, 32, 0, 1, 2, 3,
-                                 4, 5, 15, 31, 63, 127, 255]),
-                          3), buf)
-
-    def test_bitmap_text(self):
-        creator = testee.SimpleTextAndIcons()
-        buf = creator.bitmap("/:HEART2:\\")
-        self.assertEqual((array('B',
-                                [0, 0, 2, 6, 12, 24, 48, 96, 192, 128, 0, 0, 12, 30, 63, 63, 63, 31, 15, 7, 3, 1, 0, 96,
-                                 240, 248, 248, 248, 240, 224, 192, 128, 0, 0, 128, 192, 96, 48, 24, 12, 6, 2, 0, 0]),
-                          4), buf)
-
-    def test_preload(self):
-        creator = testee.SimpleTextAndIcons()
-        self.assertFalse(creator.are_preloaded_unused())
-        creator.add_preload_img("resources/bitpatterns.png")
-        self.assertTrue(creator.are_preloaded_unused())
-        buf = creator.bitmap("\x01")
-        self.assertFalse(creator.are_preloaded_unused())
-        self.assertEqual((array('B',
-                                [128, 64, 32, 16, 8, 4, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128, 64, 32, 0, 1, 2, 3,
-                                 4, 5, 15, 31, 63, 127, 255]),
-                          3), buf)