diff --git a/main.h b/main.h
new file mode 100644
index 0000000..8fc7320
--- /dev/null
+++ b/main.h
@@ -0,0 +1,3 @@
+void wait_period(void);
+int map(int value, int old_min, int old_max,int new_min, int new_max);
+void setupTimer(void);