diff --git a/cores/arduino/Print.cpp b/cores/arduino/Print.cpp
index 1e4c99a65..bf125b3b7 100644
--- a/cores/arduino/Print.cpp
+++ b/cores/arduino/Print.cpp
@@ -264,3 +264,17 @@ size_t Print::printFloat(double number, uint8_t digits)
   
   return n;
 }
+
+//added by bonezegei
+size_t Print::printf(const char c[], ...){
+	char text[64];
+	va_list     ap;
+	
+	if (c == NULL)
+    return 0;		
+	va_start(ap, c);
+    vsprintf(text, c, ap);
+    va_end(ap);
+	
+	return write(text);
+}
diff --git a/cores/arduino/Print.h b/cores/arduino/Print.h
index 0097cc11d..7217d4aa5 100644
--- a/cores/arduino/Print.h
+++ b/cores/arduino/Print.h
@@ -87,6 +87,8 @@ class Print
     size_t println(const Printable&);
     size_t println(void);
 
+    size_t printf(const char[], ...); //added by bonezegei 
+
     virtual void flush() { /* Empty implementation for backward compatibility */ }
 };