Major update

imported some improvements from user "bartebor"
- fixed some timing issues
- added button-support via #ifdefine
- worked on penarm-shaking-bug
- restructured some codesegments

button.h

@@ -0,0 +1,59 @@
+/* 
+* button.h
+*
+* Created: 04.05.2015 21:38:42
+* Author: Yogi
+*/
+
+
+#ifndef __BUTTON_H__
+#define __BUTTON_H__
+
+#include <Arduino.h>
+
+#define debounceDelay 50
+
+typedef void (*ActionCb)(void);
+
+class Button
+{
+	
+private:
+	long debounce;
+	byte state:1;
+	byte lastState:1;
+	byte pin;
+	ActionCb action;
+	Button( const Button &c );
+	Button& operator=( const Button &c );
+	
+public:
+	
+	Button(byte p, ActionCb a): debounce(0), state(1), lastState(1), action(a), pin(p) {} ;
+	void check() {
+		byte b = digitalRead(pin);
+		long t = millis();
+
+		if (b != lastState) {
+			debounce = t;
+		}
+
+		if ((t - debounce) > debounceDelay) {
+			if (b != state) {
+				state = b;
+
+				if (!state) {
+					(*action)();
+				}
+			}
+		}
+
+		lastState = b;
+	};
+
+
+
+}; //button
+
+#endif //__BUTTON_H__
+