diff --git a/src/microcontroller.cpp b/src/microcontroller.cpp
index 340bc6e..0bf8690 100644
--- a/src/microcontroller.cpp
+++ b/src/microcontroller.cpp
@@ -1,8 +1,5 @@
 #include "microcontroller.h"
 
-#include <chrono>
-#include <thread>
-
 void Microcontroller::relayToggle(int state, int relay)
 {
 	char buffer[8];
@@ -49,22 +46,34 @@ void Microcontroller::setAuxPwm(int duty)
 
 void Microcontroller::write(const QByteArray& buffer)
 {
-	if(_port != nullptr)
+	writeQue.enqueue(buffer);
+	if(!writeTimer.isActive())
 	{
-		_port->write(buffer);
-		_port->waitForBytesWritten(1000);
+		writeTimer.setInterval(0);
+		writeTimer.start();
 	}
-	std::this_thread::sleep_for(std::chrono::milliseconds(40));
 }
 
 void Microcontroller::write(char* buffer, const size_t length)
 {
-	if(_port != nullptr)
+	write(QByteArray(buffer, length));
+}
+
+void Microcontroller::onWriteTimerTimeout()
+{
+	writeTimer.setInterval(50);
+	if(connected())
 	{
-		_port->write(buffer, length);
-		_port->waitForBytesWritten(1000);
+		if(!writeQue.empty())
+		{
+			QByteArray data = writeQue.dequeue();
+			_port->write(data);
+		}
+		else
+		{
+			writeTimer.stop();
+		}
 	}
-	std::this_thread::sleep_for(std::chrono::milliseconds(40));
 }
 
 void Microcontroller::setPattern(int pattern)
@@ -82,8 +91,10 @@ void Microcontroller::startSunrise()
 
 bool Microcontroller::connected()
 {
-	if(_port != nullptr) return _port->isOpen();
-	else return false;
+	if(_port != nullptr)
+		return _port->isOpen();
+	else
+		return false;
 }
 
 void Microcontroller::refresh()
@@ -93,13 +104,17 @@ void Microcontroller::refresh()
 
 //housekeeping
 
-Microcontroller::Microcontroller(QIODevice* port)
+Microcontroller::Microcontroller(QIODevice* port): Microcontroller()
 {
 	setIODevice(port);
 }
 
 Microcontroller::Microcontroller()
 {
+	writeTimer.setInterval(50);
+	writeTimer.setSingleShot(false);
+	connect(&writeTimer, &QTimer::timeout, this, &Microcontroller::onWriteTimerTimeout);
+	qDebug()<<__func__<<writeTimer.isActive();
 }
 
 Microcontroller::~Microcontroller()
diff --git a/src/microcontroller.h b/src/microcontroller.h
index 1845dc0..c6d56bf 100644
--- a/src/microcontroller.h
+++ b/src/microcontroller.h
@@ -7,9 +7,9 @@
 #include <QString>
 #include <QRunnable>
 #include <QDebug>
-#include <QEventLoop>
 #include <QTimer>
-#include <QAbstractButton>
+#include <QByteArray>
+#include <QQueue>
 #include <vector>
 #include <memory>
 #include "items/item.h"
@@ -32,13 +32,12 @@ private:
 
 	bool listMode = false;
 
-	//uint8_t _auxState = 0;
-
 	QIODevice* _port = nullptr;
+	QQueue<QByteArray> writeQue;
+	QTimer writeTimer;
 
 	std::vector< std::shared_ptr<Item> > relayList;
 
-	QScopedPointer<QEventLoop> loop;
 	QString _buffer;
 
 	void processMicroReturn();
@@ -75,6 +74,7 @@ public slots:
 private slots:
 
 	void isReadyRead();
+	void onWriteTimerTimeout();
 
 signals:
 	void textRecived(const QString string);