diff --git a/Metro-Arduino-Wiring-master/INSTALL.txt b/Metro-Arduino-Wiring-master/INSTALL.txt
new file mode 100644
index 0000000..43509c8
--- /dev/null
+++ b/Metro-Arduino-Wiring-master/INSTALL.txt
@@ -0,0 +1 @@
+Put the "Metro" folder in your Arduino or Wiring "libraries" folder. 
diff --git a/Metro-Arduino-Wiring-master/LICENSE b/Metro-Arduino-Wiring-master/LICENSE
new file mode 100644
index 0000000..f945b53
--- /dev/null
+++ b/Metro-Arduino-Wiring-master/LICENSE
@@ -0,0 +1,20 @@
+The MIT License (MIT)
+
+Copyright (c) 2013 thomasfredericks
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/Metro-Arduino-Wiring-master/Metro/LICENSE b/Metro-Arduino-Wiring-master/Metro/LICENSE
new file mode 100644
index 0000000..f945b53
--- /dev/null
+++ b/Metro-Arduino-Wiring-master/Metro/LICENSE
@@ -0,0 +1,20 @@
+The MIT License (MIT)
+
+Copyright (c) 2013 thomasfredericks
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/Metro-Arduino-Wiring-master/Metro/Metro.cpp b/Metro-Arduino-Wiring-master/Metro/Metro.cpp
new file mode 100644
index 0000000..104739f
--- /dev/null
+++ b/Metro-Arduino-Wiring-master/Metro/Metro.cpp
@@ -0,0 +1,61 @@
+
+
+#if defined(ARDUINO) && ARDUINO >= 100
+#include "Arduino.h"
+#else
+#include "WProgram.h"
+#endif
+#include "Metro.h"
+
+Metro::Metro()
+{
+	
+	this->interval_millis = 1000;
+	
+}
+
+
+Metro::Metro(unsigned long interval_millis)
+{
+	
+	this->interval_millis = interval_millis;
+	
+}
+
+
+void Metro::interval(unsigned long interval_millis)
+{
+  this->interval_millis = interval_millis;
+}
+
+uint8_t Metro::check()
+{
+
+  unsigned long now = millis();
+  
+  if ( interval_millis == 0 ){
+    previous_millis = now;
+	return 1;
+  }
+ 
+  if ( (now - previous_millis) >= interval_millis) {
+	#ifdef NOCATCH-UP
+	previous_millis = now ; 
+	#else
+	previous_millis += interval_millis ; 
+	 #endif
+    return 1;
+  }
+  
+  return 0;
+
+}
+
+void Metro::reset() 
+{
+ 
+  this->previous_millis = millis();
+
+}
+
+
diff --git a/Metro-Arduino-Wiring-master/Metro/Metro.h b/Metro-Arduino-Wiring-master/Metro/Metro.h
new file mode 100644
index 0000000..ec09aad
--- /dev/null
+++ b/Metro-Arduino-Wiring-master/Metro/Metro.h
@@ -0,0 +1,49 @@
+
+/*
+ *      This program is free software; you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation; either version 2 of the License, or
+ *      (at your option) any later version.
+ *      
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *      
+ *      You should have received a copy of the GNU General Public License
+ *      along with this program; if not, write to the Free Software
+ *      Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ *      MA 02110-1301, USA.
+ */
+
+
+
+/*  * * * * * * * * * * * * * * * * * * * * * * * * * * * 
+ Main code by Thomas O Fredericks (tof@t-o-f.info)
+ Contributions by Paul Bouchier and Benjamin.soelberg
+* * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#ifndef Metro_h
+#define Metro_h
+
+#include <inttypes.h>
+
+
+class Metro
+{
+
+public:
+  Metro();
+  Metro(unsigned long interval_millis);
+  void interval(unsigned long interval_millis);
+  uint8_t check();
+  void reset();
+	
+private:
+  unsigned long  previous_millis, interval_millis;
+
+};
+
+#endif
+
+
diff --git a/Metro-Arduino-Wiring-master/Metro/README.md b/Metro-Arduino-Wiring-master/Metro/README.md
new file mode 100644
index 0000000..2d680d0
--- /dev/null
+++ b/Metro-Arduino-Wiring-master/Metro/README.md
@@ -0,0 +1 @@
+Please visit https://github.com/thomasfredericks/Metro-Arduino-Wiring for latest code and documentation.
\ No newline at end of file
diff --git a/Metro-Arduino-Wiring-master/Metro/examples/blinking/blinking.ino b/Metro-Arduino-Wiring-master/Metro/examples/blinking/blinking.ino
new file mode 100644
index 0000000..72d0d99
--- /dev/null
+++ b/Metro-Arduino-Wiring-master/Metro/examples/blinking/blinking.ino
@@ -0,0 +1,30 @@
+/*
+ This code will blink an LED attached to pin 13 on and off. 
+ It will stay on for 0.25 seconds.
+ It will stay off for 1 second.
+ */
+#include <Metro.h> //Include Metro library
+#define LED 13 // Define the led's pin
+
+//Create a variable to hold theled's current state
+int state = HIGH;
+
+// Instanciate a metro object and set the interval to 250 milliseconds (0.25 seconds).
+Metro ledMetro = Metro(250); 
+
+void setup()
+{
+  pinMode(LED,OUTPUT);
+  digitalWrite(LED,state);
+}
+
+void loop()
+{
+
+  if (ledMetro.check() == 1) { // check if the metro has passed its interval .
+    if (state==HIGH)  state=LOW;
+    else state=HIGH;
+    
+    digitalWrite(LED,state);
+  }
+}
diff --git a/Metro-Arduino-Wiring-master/Metro/examples/blinking_2_instances/blinking_2_instances.ino b/Metro-Arduino-Wiring-master/Metro/examples/blinking_2_instances/blinking_2_instances.ino
new file mode 100644
index 0000000..4bdd974
--- /dev/null
+++ b/Metro-Arduino-Wiring-master/Metro/examples/blinking_2_instances/blinking_2_instances.ino
@@ -0,0 +1,51 @@
+// This code will blink output 13 every 250 ms
+// abd will blink output 9 every 125 ms
+
+
+#include <Metro.h> // Include Metro library
+#define LED0 13 // Define a LED pin
+#define LED1 9 // Define another LED pin
+
+// Create variables to hold the LED states
+int state0 = HIGH;
+int state1 = HIGH;
+
+// Instantiate a metro object and set the interval to 250 milliseconds (0.25 seconds).
+Metro metro0 = Metro(250); 
+
+// Instantiate another metro object and set the interval to 125 milliseconds (0.125 seconds).
+Metro metro1 = Metro(125); 
+
+void setup()
+{
+  pinMode(LED0,OUTPUT);
+  digitalWrite(LED0,state0);
+  
+   pinMode(LED1,OUTPUT);
+  digitalWrite(LED1,state1);
+  
+}
+
+void loop()
+{
+
+  if (metro0.check() == 1) { // check if the metro has passed its interval .
+    if (state0==HIGH)  { 
+      state0=LOW;
+    } else {
+      state0=HIGH;
+    }
+    digitalWrite(LED0,state0);
+  }
+  
+   if (metro1.check() == 1) { // check if the metro has passed its interval .
+    if (state1==HIGH)  { 
+      state1=LOW;
+    } else {
+      state1=HIGH;
+    }
+    digitalWrite(LED1,state1);
+  }
+  
+  
+}
diff --git a/Metro-Arduino-Wiring-master/Metro/examples/blinking_2_intervals/blinking_2_intervals.ino b/Metro-Arduino-Wiring-master/Metro/examples/blinking_2_intervals/blinking_2_intervals.ino
new file mode 100644
index 0000000..d6f9a70
--- /dev/null
+++ b/Metro-Arduino-Wiring-master/Metro/examples/blinking_2_intervals/blinking_2_intervals.ino
@@ -0,0 +1,36 @@
+/*
+ This code will blink an LED attached to pin 13 on and off. 
+ It will stay on for 0.25 seconds.
+ It will stay off for 1 second.
+ */
+#include <Metro.h> //Include Metro library
+#define LED 13 // Define the led's pin
+
+//Create a variable to hold theled's current state
+int state = HIGH;
+
+// Instanciate a metro object and set the interval to 250 milliseconds (0.25 seconds).
+Metro ledMetro = Metro(250); 
+
+void setup()
+{
+  pinMode(LED,OUTPUT);
+  digitalWrite(LED,state);
+}
+
+void loop()
+{
+
+  if (ledMetro.check() == 1) { // check if the metro has passed its interval .
+    if (state==HIGH)  { 
+      state=LOW;
+      ledMetro.interval(250); // if the pin is HIGH, set the interval to 0.25 seconds.
+    } 
+    else {
+      ledMetro.interval(1000); // if the pin is LOW, set the interval to 1 second.
+      state=HIGH;
+    }
+    digitalWrite(LED,state);
+  }
+}
+
diff --git a/Metro-Arduino-Wiring-master/Metro/examples/serialInterval/serialInterval.ino b/Metro-Arduino-Wiring-master/Metro/examples/serialInterval/serialInterval.ino
new file mode 100644
index 0000000..68a9d41
--- /dev/null
+++ b/Metro-Arduino-Wiring-master/Metro/examples/serialInterval/serialInterval.ino
@@ -0,0 +1,24 @@
+// This example sends a Serial message every 250 milliseconds
+
+#include <Metro.h> // Include the Metro library
+
+Metro serialMetro = Metro(250);  // Instantiate an instance
+
+void setup() {
+  Serial.begin(115200); // Start the Serial communication
+}
+
+void loop() {
+
+  if (serialMetro.check() == 1) { // check if the metro has passed it's interval .
+  // Output all the analog readings seperated by a space character
+    for (int i = 0; i < 6; i++ ) {
+      Serial.print (analogRead( i) );
+      Serial.print(32,BYTE);
+    }
+    // Terminate message with a linefeed and a carriage return
+    Serial.print(13,BYTE);
+    Serial.print(10,BYTE);
+  }
+}
+
diff --git a/Metro-Arduino-Wiring-master/Metro/keywords.txt b/Metro-Arduino-Wiring-master/Metro/keywords.txt
new file mode 100644
index 0000000..62ca8a2
--- /dev/null
+++ b/Metro-Arduino-Wiring-master/Metro/keywords.txt
@@ -0,0 +1,25 @@
+#######################################
+# Syntax Coloring Map For Test
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+Metro	KEYWORD1
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+
+check	KEYWORD2
+interval	KEYWORD2
+
+#######################################
+# Instances (KEYWORD2)
+#######################################
+
+#######################################
+# Constants (LITERAL1)
+#######################################
+
diff --git a/Metro-Arduino-Wiring-master/README.md b/Metro-Arduino-Wiring-master/README.md
new file mode 100644
index 0000000..a0f770a
--- /dev/null
+++ b/Metro-Arduino-Wiring-master/README.md
@@ -0,0 +1,11 @@
+METRO
+=====================
+
+Metro library for Arduino or Wiring that facilitates the implementation of recurring timed events
+by Thomas Ouellet Fredericks
+with contributions from: Paul Bouchier and Benjamin.soelberg
+
+Download the latest version here : https://github.com/thomasfredericks/Metro-Arduino-Wiring/archive/master.zip
+
+Documentation can be found here : https://github.com/thomasfredericks/Metro-Arduino-Wiring/wiki
+