diff --git a/app/lib/mcopy-arduino.js b/app/lib/mcopy-arduino.js
new file mode 100644
index 0000000..2f1ed46
--- /dev/null
+++ b/app/lib/mcopy-arduino.js
@@ -0,0 +1,123 @@
+var serialport = require('serialport'),
+	SerialPort = serialport.SerialPort,
+	exec = require('child_process').exec,
+	mcopy = {};
+
+/******
+	Arduino handlers
+*******/
+mcopy.arduino = {
+	path : '',
+	known: [
+		'/dev/tty.usbmodem1a161', 
+		'/dev/tty.usbserial-A800f8dk', 
+		'/dev/tty.usbserial-A900cebm', 
+		'/dev/tty.usbmodem1a131',
+		'/dev/tty.usbserial-a900f6de',
+		'/dev/tty.usbmodem1a141'
+	],
+	serial : {},
+	baud : 57600,
+	queue : {},
+	timer : 0,
+	lock : false
+};
+mcopy.arduino.init = function (callback) {
+	'use strict';
+	console.log('Searching for devices...');
+	var cmd = 'ls /dev/tty.*';
+	exec(cmd, function (e, std) {
+		var devices = std.split('\n'),
+			matches = [];
+		devices.pop();
+		for (var i = 0; i < devices.length; i++) {
+			if (devices[i].indexOf('usbserial') !== -1
+				||devices[i].indexOf('usbmodem') !== -1){
+				matches.push(devices[i]);
+			}
+		}
+		if (matches.length === 0) {
+			console.log('No devices found.');
+			if (callback) { callback(false); }
+		} else if (matches.length > 0) {
+			console.log('Found ' + matches[0]);
+			mcopy.arduino.path = matches[0];
+			//once connected to the arduino
+			//start user interface
+			if (callback) { callback(true); }
+		}
+	});
+};
+//commands which respond to a sent char
+mcopy.arduino.send = function (cmd, res) {
+	'use strict';
+	if (!mcopy.arduino.lock) {
+		mcopy.arduino.lock = true;
+		mcopy.arduino.queue[cmd] = res;
+		setTimeout(function () {
+			mcopy.arduino.serial.write(cmd, function (err, results) {
+				if (err) { console.log(err); }
+				mcopy.arduino.lock = false;
+				mcopy.arduino.timer = new Date().getTime();
+			});
+		}, mcopy.cfg.arduino.serialDelay);
+	}
+};
+//send strings, after char triggers firmware to accept
+mcopy.arduino.string = function (str) {
+	'use strict';
+	setTimeout(function () {
+		mcopy.arduino.serial.write(str, function (err, results) {
+			if (err) { console.log(err); }
+			//console.log('sent: ' + str);
+		});
+	}, mcopy.cfg.arduino.serialDelay);
+};
+//with same over serial when done
+mcopy.arduino.end = function (data) {
+	'use strict';
+	var end = new Date().getTime(),
+		ms = end - mcopy.arduino.timer;
+	if (mcopy.arduino.queue[data] !== undefined) {
+		mcopy.arduino.lock = false;
+		console.log('Command ' + data + ' took ' + ms + 'ms');
+		mcopy.arduino.queue[data](ms);
+		delete mcopy.arduino.queue[data]; //add timestamp?
+	} else {
+		console.log('Received stray "' + data + '" from ' + mcopy.arduino.path); //silent to user
+	}
+};
+mcopy.arduino.connect = function (callback) {
+	'use strict';
+	console.log('Connecting to ' + mcopy.arduino.path + '...');
+	mcopy.arduino.serial = new SerialPort(mcopy.arduino.path, {
+	  baudrate: mcopy.cfg.arduino.baud,
+	  parser: serialport.parsers.readline("\n")
+	}, false);
+	mcopy.arduino.serial.open(function (error) {
+		if (error) {
+			return console.log('failed to open: '+ error);
+		} else {
+			console.log('Opened connection with ' + mcopy.arduino.path);
+			mcopy.arduino.serial.on('data', function (data) {
+				data = data.replace('\r', '');
+				mcopy.arduino.end(data);
+			});
+			setTimeout(function () {
+				console.log('Verifying firmware...');
+				mcopy.arduino.send(mcopy.cfg.arduino.cmd.connect, function () {
+					console.log('Firmware verified');
+					console.log('Optical printer ready!');
+					if (callback) { callback(); }
+				});
+			}, 2000);
+		}
+	});
+};
+
+if (typeof module !== 'undefined') {
+	module.exports = function (cfg) {
+		mcopy.cfg = cfg;
+		return mcopy.arduino;
+	}
+}
\ No newline at end of file
diff --git a/app/main.js b/app/main.js
index 25641c9..dd4b2fe 100644
--- a/app/main.js
+++ b/app/main.js
@@ -1,24 +1,22 @@
-'use strict';
-const electron = require('electron'),
+var electron = require('electron'),
 	fs = require('fs'),
 	Menu = require('menu'),
 	ipcMain = require('electron').ipcMain,
 	app = electron.app,
-	exec = require('child_process').exec,
 	BrowserWindow = electron.BrowserWindow,
 	uuid = require('node-uuid'),
-	serialport = require('serialport'),
-	SerialPort = serialport.SerialPort,
 	mcopy = {};
 
-let mainWindow;
+mcopy.cfg = JSON.parse(fs.readFileSync('./cfg.json', 'utf8'));
+mcopy.arduino = require('./lib/mcopy-arduino.js')(mcopy.cfg);
+
+var mainWindow;
 
 var init = function () {
-	mcopy.cfg = JSON.parse(fs.readFileSync('./cfg.json', 'utf8'));
 	createWindow();
 	mcopy.arduino.init(function (success) {
 		mcopy.arduino.connect(function () {
-			mcopy.arduino.colorTest();
+			//
 		});
 	});
 };
@@ -54,118 +52,3 @@ ipcMain.on('light', function(event, arg) {
 	//
 	event.returnValue = true;
 });
-
-/******
-	Arduino handlers
-*******/
-mcopy.arduino = {
-	path : '',
-	known: [
-		'/dev/tty.usbmodem1a161', 
-		'/dev/tty.usbserial-A800f8dk', 
-		'/dev/tty.usbserial-A900cebm', 
-		'/dev/tty.usbmodem1a131',
-		'/dev/tty.usbserial-a900f6de',
-		'/dev/tty.usbmodem1a141'
-	],
-	serial : {},
-	baud : 57600,
-	queue : {},
-	timer : 0,
-	lock : false
-};
-mcopy.arduino.init = function (callback) {
-	console.log('Searching for devices...');
-	var cmd = 'ls /dev/tty.*';
-	exec(cmd, function (e, std) {
-		var devices = std.split('\n'),
-			matches = [];
-		devices.pop();
-		for (var i = 0; i < devices.length; i++) {
-			if (devices[i].indexOf('usbserial') !== -1
-				||devices[i].indexOf('usbmodem') !== -1){
-				matches.push(devices[i]);
-			}
-		}
-		if (matches.length === 0) {
-			console.log('No devices found.');
-			if (callback) { callback(false); }
-		} else if (matches.length > 0) {
-			console.log('Found ' + matches[0]);
-			mcopy.arduino.path = matches[0];
-			//once connected to the arduino
-			//start user interface
-			if (callback) { callback(true); }
-		}
-	});
-};
-//commands which respond to a sent char
-mcopy.arduino.send = function (cmd, res) {
-	if (!mcopy.arduino.lock) {
-		mcopy.arduino.lock = true;
-		mcopy.arduino.queue[cmd] = res;
-		setTimeout(function () {
-			mcopy.arduino.serial.write(cmd, function (err, results) {
-				if (err) { console.log(err); }
-				mcopy.arduino.lock = false;
-				mcopy.arduino.timer = new Date().getTime();
-			});
-		}, mcopy.cfg.arduino.serialDelay);
-	}
-};
-//send strings, after char triggers firmware to accept
-mcopy.arduino.string = function (str) {
-	setTimeout(function () {
-		mcopy.arduino.serial.write(str, function (err, results) {
-			if (err) { console.log(err); }
-			//console.log('sent: ' + str);
-		});
-	}, mcopy.cfg.arduino.serialDelay);
-};
-//with same over serial when done
-mcopy.arduino.end = function (data) {
-	var end = new Date().getTime(),
-		ms = end - mcopy.arduino.timer;
-	if (mcopy.arduino.queue[data] !== undefined) {
-		mcopy.arduino.lock = false;
-		console.log('Command ' + data + ' took ' + ms + 'ms');
-		mcopy.arduino.queue[data](ms);
-		delete mcopy.arduino.queue[data]; //add timestamp?
-	} else {
-		console.log('Received stray "' + data + '" from ' + mcopy.arduino.path); //silent to user
-	}
-};
-mcopy.arduino.connect = function (callback) {
-	console.log('Connecting to ' + mcopy.arduino.path + '...');
-	mcopy.arduino.serial = new SerialPort(mcopy.arduino.path, {
-	  baudrate: mcopy.cfg.arduino.baud,
-	  parser: serialport.parsers.readline("\n")
-	}, false);
-	mcopy.arduino.serial.open(function (error) {
-		if (error) {
-			return console.log('failed to open: '+ error);
-		} else {
-			console.log('Opened connection with ' + mcopy.arduino.path);
-			mcopy.arduino.serial.on('data', function (data) {
-				data = data.replace('\r', '');
-				mcopy.arduino.end(data);
-			});
-			setTimeout(function () {
-				console.log('Verifying firmware...');
-				mcopy.arduino.send(mcopy.cfg.arduino.cmd.connect, function () {
-					console.log('Firmware verified');
-					console.log('Optical printer ready!');
-					if (callback) { callback(); }
-				});
-			}, 2000);
-		}
-	});
-};
-
-mcopy.arduino.colorTest = function () {
-	var color = '255,140,70';
-	mcopy.arduino.send(mcopy.cfg.arduino.cmd.light, function () {
-		console.log('Light set to ' + color);
-	});
-	mcopy.arduino.string(color);
-};
diff --git a/app/tests/arduino_tests.js b/app/tests/arduino_tests.js
new file mode 100644
index 0000000..cd0dc18
--- /dev/null
+++ b/app/tests/arduino_tests.js
@@ -0,0 +1,29 @@
+var fs = require('fs'),
+	mcopy = {};
+
+mcopy.cfg = JSON.parse(fs.readFileSync('./cfg.json', 'utf8'));
+mcopy.arduino = require('../lib/mcopy-arduino.js')(mcopy.cfg);
+
+mcopy.arduino.colorTest = function (color, cb) {
+	mcopy.arduino.send(mcopy.cfg.arduino.cmd.light, function () {
+		console.log('Light set to ' + color);
+		if (cb) setTimeout(cb, 20);
+	});
+	mcopy.arduino.string(color);
+};
+
+mcopy.arduino.init(function (success) {
+	mcopy.arduino.connect(function () {
+		mcopy.arduino.colorTest('255,140,70', function () {
+		mcopy.arduino.colorTest('5,0,0', function () {
+		mcopy.arduino.colorTest('255,255,255', function () {
+		mcopy.arduino.colorTest('160,14,250', function () {
+		mcopy.arduino.colorTest('5,32,200', function () {
+			
+		});//5	
+		});//4		
+		});//3	
+		});//2
+		});//1
+	});
+});
\ No newline at end of file
diff --git a/ino/mcopy_light/mcopy_light.ino b/ino/mcopy_light/mcopy_light.ino
index 156a1a9..a1a011c 100644
--- a/ino/mcopy_light/mcopy_light.ino
+++ b/ino/mcopy_light/mcopy_light.ino
@@ -21,10 +21,12 @@ volatile int g = 0;
 volatile int b = 0;
 
 volatile char cmd_char = 'z';
+const int serialDelay = 5;
 
 void setup () {
 	Serial.begin(57600);
 	Serial.flush();
+	Serial.setTimeout(serialDelay);
 	pixieSerial.begin(115200); // Pixie REQUIRES this baud rate
 	light.setPixelColor(0, 0, 0, 0);
 }
diff --git a/ino/mcopy_light_tests/mcopy_light_tests.ino b/ino/mcopy_light_tests/mcopy_light_tests.ino
index 33ed06b..ae57d10 100644
--- a/ino/mcopy_light_tests/mcopy_light_tests.ino
+++ b/ino/mcopy_light_tests/mcopy_light_tests.ino
@@ -29,13 +29,15 @@ volatile int g = 0;
 volatile int b = 0;
 
 volatile char cmd_char = 'z';
+const int serialDelay = 5;
 
 void setup () {
 	Serial.begin(57600);
 	Serial.flush();
+  Serial.setTimeout(serialDelay);
 	//pixieSerial.begin(115200); // Pixie REQUIRES this baud rate
   light.begin();
-	light.setPixelColor(0, 0, 0, 0);
+  light.setPixelColor(0, 0, 0, 0);
   light.show();
 }
 
@@ -62,6 +64,16 @@ void cmd (char val) {
 	}
 }
 
+//takes 1004ms w/ string method
+//takes 2ms(!!!!!) w/o readString() ugh
+//WAIT!! Serial.setTimeout(1000) by default!
+//500 - WORKS
+//250 - WORKS
+//100 - WORKS
+//25? - WORKS
+//5   - WORKS - STAY HERE FOR NOW
+//got down to ~10ms, will take hours off 4000 frame roll
+//timing may also change when switching to pixie
 void colorString () {
 	while (Serial.available() == 0) {             
 		//Wait for color string
@@ -81,5 +93,5 @@ void colorString () {
 	b = strB.toInt();
 
 	light.setPixelColor(0, r, g, b);
-  light.show();
+    light.show();
 }