diff --git a/ino/lib/McopySerial/McopySerial.cpp b/ino/lib/McopySerial/McopySerial.cpp
index 34e5532..7644b5d 100644
--- a/ino/lib/McopySerial/McopySerial.cpp
+++ b/ino/lib/McopySerial/McopySerial.cpp
@@ -1,13 +1,27 @@
+/// mcopy Serial Library
+
 #include "McopySerial.h" 
 
 McopySerial::McopySerial () {
 
 }
 
+void McopySerial::on()
+
 void McopySerial::begin () {
 	Serial.begin(baud);
 }
 
+void McopySerial::loop () {
+	if (Serial.available()) {
+		cmdChar = (char) Serial.read();
+	}
+	if (cmdChar != 'z') {
+		//cmd(cmdChar);
+		cmdChar = 'z';
+	}
+}
+
 void McopySerial::setBaud (int baudRate) {
 	baud = baudRate;
 }
diff --git a/ino/lib/McopySerial/McopySerial.h b/ino/lib/McopySerial/McopySerial.h
index a011713..ea1f495 100644
--- a/ino/lib/McopySerial/McopySerial.h
+++ b/ino/lib/McopySerial/McopySerial.h
@@ -3,17 +3,21 @@
 
 #include "Arduino.h"
 
+typedef void (*mcopy_callback)(void);
+
 class McopySerial {           
 
 	private:
 	volatile int baud = 57600;
 	volatile bool debugOn = false;
+	volatile char cmdChar = 'z';
 
 	public:
 	McopySerial();
 
 	void begin();
 	void setBaud(int baudRate);
+	void loop();
 
 	void debug (bool state);
 	void log (String message);
diff --git a/ino/lib/McopySerial/sync.sh b/ino/lib/McopySerial/sync.sh
deleted file mode 100644
index 47f8003..0000000
--- a/ino/lib/McopySerial/sync.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/bash
-
-cp McopySerial.* ../../mcopy_cam_canon/
\ No newline at end of file
diff --git a/ino/mcopy_cam_canon/McopySerial.cpp b/ino/mcopy_cam_canon/McopySerial.cpp
index 34e5532..7644b5d 100644
--- a/ino/mcopy_cam_canon/McopySerial.cpp
+++ b/ino/mcopy_cam_canon/McopySerial.cpp
@@ -1,13 +1,27 @@
+/// mcopy Serial Library
+
 #include "McopySerial.h" 
 
 McopySerial::McopySerial () {
 
 }
 
+void McopySerial::on()
+
 void McopySerial::begin () {
 	Serial.begin(baud);
 }
 
+void McopySerial::loop () {
+	if (Serial.available()) {
+		cmdChar = (char) Serial.read();
+	}
+	if (cmdChar != 'z') {
+		//cmd(cmdChar);
+		cmdChar = 'z';
+	}
+}
+
 void McopySerial::setBaud (int baudRate) {
 	baud = baudRate;
 }
diff --git a/ino/mcopy_cam_canon/McopySerial.h b/ino/mcopy_cam_canon/McopySerial.h
index a011713..ea1f495 100644
--- a/ino/mcopy_cam_canon/McopySerial.h
+++ b/ino/mcopy_cam_canon/McopySerial.h
@@ -3,17 +3,21 @@
 
 #include "Arduino.h"
 
+typedef void (*mcopy_callback)(void);
+
 class McopySerial {           
 
 	private:
 	volatile int baud = 57600;
 	volatile bool debugOn = false;
+	volatile char cmdChar = 'z';
 
 	public:
 	McopySerial();
 
 	void begin();
 	void setBaud(int baudRate);
+	void loop();
 
 	void debug (bool state);
 	void log (String message);