diff --git a/Calendar/PanelDesign.py b/Calendar/PanelDesign.py
new file mode 100644
index 0000000..a10ad8f
--- /dev/null
+++ b/Calendar/PanelDesign.py
@@ -0,0 +1,17 @@
+class PanelDesign(object):
+    """Defined general interface for panel designs."""
+    def set_size(self, width, height):
+        self.width = width
+        self.height = height
+
+    def get_image (self):
+        raise NotImplementedError("Functions needs to be implemented")
+
+    def add_weather (self, weather):
+        raise NotImplementedError("Functions needs to be implemented")
+
+    def add_calendar (self, calendar):
+        raise NotImplementedError("Functions needs to be implemented")
+
+    def add_rssfeed (self, rss):
+        raise NotImplementedError("Functions needs to be implemented")
\ No newline at end of file