diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -52,18 +52,10 @@ else ()
   find_package(QtColorWidgets REQUIRED)
 endif ()
 
-set(BUILD_LEDWIDGET true CACHE BOOL "Download and build LedWidget automatically.")
-if (BUILD_LEDWIDGET)
-  include(BuildLedWidget)
-else (BUILD_LEDWIDGET)
-  include(FindLedWidget)
-endif (BUILD_LEDWIDGET)
-
 # includes
 include_directories("./src"
   ${QWT_INCLUDE_DIR}
   ${QTCOLORWIDGETS_INCLUDE_DIRS}
-  ${LEDWIDGET_INCLUDE_DIR}
   )
 
 # flags
@@ -152,6 +144,7 @@ add_executable(${PROGRAM_NAME} WIN32
   src/source.cpp
   src/sink.cpp
   src/samplecounter.cpp
+  src/ledwidget.cpp
   misc/windows_icon.rc
   ${UI_FILES}
   ${RES_FILES}
@@ -161,7 +154,6 @@ add_executable(${PROGRAM_NAME} WIN32
 target_link_libraries(${PROGRAM_NAME}
   ${QWT_LIBRARY}
   ${QTCOLORWIDGETS_LIBRARIES}
-  ${LEDWIDGET_LIBRARY}
   )
 qt5_use_modules(${PROGRAM_NAME} Widgets SerialPort Network)
 
@@ -173,11 +165,6 @@ if (BUILD_QTCOLORWIDGETS)
   add_dependencies(${PROGRAM_NAME} QCW)
 endif ()
 
-if (BUILD_LEDWIDGET)
-  add_dependencies(${PROGRAM_NAME} LEDW)
-endif (BUILD_LEDWIDGET)
-
-
 # set compiler flags
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
 
diff --git a/cmake/modules/BuildLedWidget.cmake b/cmake/modules/BuildLedWidget.cmake
deleted file mode 100644
--- a/cmake/modules/BuildLedWidget.cmake
+++ /dev/null
@@ -1,30 +0,0 @@
-#
-# Copyright © 2017 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(ExternalProject)
-
-ExternalProject_Add(LEDW
-  PREFIX ledw
-  HG_REPOSITORY https://bitbucket.org/hyOzd/ledwidget
-  UPDATE_COMMAND ""
-  INSTALL_COMMAND "")
-
-ExternalProject_Get_Property(LEDW binary_dir source_dir)
-set(LEDWIDGET_INCLUDE_DIR ${source_dir}/src)
-set(LEDWIDGET_LIBRARY ${binary_dir}/libledwidget.a)
diff --git a/src/ledwidget.cpp b/src/ledwidget.cpp
new file mode 100644
--- /dev/null
+++ b/src/ledwidget.cpp
@@ -0,0 +1,129 @@
+/*
+  Copyright © 2018 Hasan Yavuz Özderya
+
+  This file is part of serialplot.
+
+  ledwidget 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.
+
+  ledwidget 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 ledwidget.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "ledwidget.h"
+#include <QPainter>
+#include <QPainterPath>
+#include <QRadialGradient>
+
+LedWidget::LedWidget(QWidget* parent) : QWidget(parent),
+    m_color(107,223,51),
+    m_on(true)
+{
+    resize(20,20);
+}
+
+QSize LedWidget::sizeHint() const
+{
+    return QSize(20,20);
+}
+
+QSize LedWidget::minimumSizeHint() const
+{
+    return QSize(10, 10);
+}
+
+void LedWidget::setColor(QColor ledColor)
+{
+    if (m_color == ledColor) return;
+    m_color = ledColor;
+    update();
+    emit colorChanged(m_color);
+}
+
+bool LedWidget::isOn()
+{
+    return m_on;
+}
+
+void LedWidget::setOn(bool on)
+{
+    if (on == m_on) return;
+    m_on = on;
+    update();
+    emit onChanged(on);
+}
+
+void LedWidget::turnOn()
+{
+    setOn(true);
+}
+
+void LedWidget::turnOff()
+{
+    setOn(false);
+}
+
+void LedWidget::toggle()
+{
+    setOn(!m_on);
+}
+
+void LedWidget::paintEvent(QPaintEvent* event)
+{
+    Q_UNUSED(event)
+
+    const qreal r = std::min(width(), height()) / 2; // maximum radius including glow
+    const qreal glowOffset = std::max(2., r/5.);
+    const qreal borderOffset = std::max(1., r/10.);
+    const qreal shineOffset = std::max(1., r/20.);
+    const QPointF center(width()/2, height()/2);
+
+    const qreal gr = r;
+    const qreal br = gr - glowOffset;   // border shape radius
+    const qreal ir = br - borderOffset; // inner fill radius
+    const qreal sr = ir - shineOffset;
+
+    QColor borderColor(130,130,130);
+    QColor shineColor(255, 255, 255, m_on ? 200 : 50);
+    QColor fillColor(m_color);
+
+    QPainter painter(this);
+    painter.setRenderHints(QPainter::Antialiasing);
+
+    // draw border
+    painter.setPen(Qt::NoPen);
+    painter.setBrush(borderColor);
+    painter.drawEllipse(center, br, br);
+
+    // draw infill
+    if (!m_on) fillColor = fillColor.darker();
+    painter.setBrush(fillColor);
+    painter.drawEllipse(center, ir, ir);
+
+    // draw glow
+    if (m_on)
+    {
+        QColor glowColor(m_color);
+        glowColor.setAlphaF(0.5);
+        QRadialGradient glowGradient(center, gr, center);
+        glowGradient.setColorAt(0, glowColor);
+        glowGradient.setColorAt((r-glowOffset)/r, glowColor);
+        glowGradient.setColorAt(1, Qt::transparent);
+        painter.setBrush(glowGradient);
+        painter.drawEllipse(center, gr, gr);
+    }
+
+    // draw shine
+    QRadialGradient shineGradient(center, sr, center-QPoint(sr/2,sr/2));
+    shineGradient.setColorAt(0, shineColor);
+    shineGradient.setColorAt(1, Qt::transparent);
+    painter.setBrush(shineGradient);
+    painter.drawEllipse(center, sr, sr);
+}
diff --git a/src/ledwidget.h b/src/ledwidget.h
new file mode 100644
--- /dev/null
+++ b/src/ledwidget.h
@@ -0,0 +1,61 @@
+/*
+  Copyright © 2018 Hasan Yavuz Özderya
+
+  This file is part of serialplot.
+
+  ledwidget 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.
+
+  ledwidget 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 ledwidget.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef LEDWIDGET_H
+#define LEDWIDGET_H
+
+#include <QWidget>
+#include <QSize>
+#include <QColor>
+
+class LedWidget : public QWidget
+{
+    Q_OBJECT
+
+    Q_PROPERTY(QColor color MEMBER m_color WRITE setColor NOTIFY colorChanged)
+    Q_PROPERTY(bool on READ isOn WRITE setOn NOTIFY onChanged)
+
+public:
+    explicit LedWidget(QWidget *parent = 0);
+
+    void setColor(QColor ledColor);
+    bool isOn();
+
+    QSize sizeHint() const Q_DECL_OVERRIDE;
+    QSize minimumSizeHint() const Q_DECL_OVERRIDE;
+
+signals:
+    void colorChanged(QColor ledColor);
+    void onChanged(bool on);
+
+public slots:
+    void setOn(bool on);
+    void turnOn();
+    void turnOff();
+    void toggle();
+
+protected:
+    void paintEvent(QPaintEvent *event) Q_DECL_OVERRIDE;
+
+private:
+    QColor m_color;
+    bool m_on;
+};
+
+#endif // LEDWIDGET_H