diff --git a/commandpanel.cpp b/commandpanel.cpp
new file mode 100644
--- /dev/null
+++ b/commandpanel.cpp
@@ -0,0 +1,68 @@
+/*
+  Copyright © 2015 Hasan Yavuz Özderya
+
+  This file is part of serialplot.
+
+  serialplot 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 3 of the License, or
+  (at your option) any later version.
+
+  serialplot 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 serialplot.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "commandpanel.h"
+#include "ui_commandpanel.h"
+
+#include <QByteArray>
+#include <QtDebug>
+
+CommandPanel::CommandPanel(QSerialPort* port, QWidget *parent) :
+    QWidget(parent),
+    ui(new Ui::CommandPanel)
+{
+    serialPort = port;
+
+    ui->setupUi(this);
+    ui->scrollAreaWidgetContents->setLayout(new QVBoxLayout);
+
+#ifdef Q_OS_WIN
+    ui->pbNew->setIcon(QIcon(":/icons/list-add"));
+#endif // Q_OS_WIN
+
+    connect(ui->pbNew, &QPushButton::clicked, this, &CommandPanel::newCommand);
+
+    newCommand(); // add an empty slot by default
+}
+
+CommandPanel::~CommandPanel()
+{
+    delete ui;
+}
+
+void CommandPanel::newCommand()
+{
+    auto command = new CommandWidget();
+    ui->scrollAreaWidgetContents->layout()->addWidget(command);
+    connect(command, &CommandWidget::sendCommand, this, &CommandPanel::sendCommand);
+}
+
+void CommandPanel::sendCommand(QByteArray command)
+{
+    if (!serialPort->isOpen())
+    {
+        qCritical() << "Port is not open!";
+        return;
+    }
+
+    if (serialPort->write(command) < 0)
+    {
+        qCritical() << "Send command failed!";
+    }
+}