diff --git a/README.md b/README.md
index ae0f93a..0a09656 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # Keypad
 GameShell's Keypad arduino code.
+## clockwork Keypad Schematic
+https://github.com/clockworkpi/GameShellDocs/blob/master/clockwork_Keypad_Schematic.pdf