diff --git a/src/tuxclocker-qt/data/AbstractAssignableConnection.hpp b/src/tuxclocker-qt/data/AbstractAssignableConnection.hpp
new file mode 100644
index 0000000..ddbbbf1
--- /dev/null
+++ b/src/tuxclocker-qt/data/AbstractAssignableConnection.hpp
@@ -0,0 +1,6 @@
+#pragma once
+
+class AbstractAssignableConnection {
+public:
+
+};
diff --git a/src/tuxclocker-qt/data/AssignableConnection.hpp b/src/tuxclocker-qt/data/AssignableConnection.hpp
new file mode 100644
index 0000000..8a80fa7
--- /dev/null
+++ b/src/tuxclocker-qt/data/AssignableConnection.hpp
@@ -0,0 +1,32 @@
+#pragma once
+
+#include <boost/signals2.hpp>
+#include <functional>
+#include <QObject>
+#include <QVariant>
+
+// Interface for the function for an assignable
+class AssignableConnection : public QObject {
+public:
+	AssignableConnection(QObject *parent = nullptr) : QObject(parent) {}
+	/*AssignableConnection(const AssignableConnection &other) {
+		targetValueChanged.connect(other.targetValueChanged);
+	}*/
+	virtual ~AssignableConnection() {}
+	// Returns the data as QVariant for saving to settings
+	virtual QVariant connectionData() = 0;
+	virtual void start() = 0;
+	virtual void stop() = 0;
+	/* Value and text representation of desired value,
+	   since converting QDBusVariant to QString isn't trivial
+	   for complex types. */
+	/*boost::signals2::signal<void(QVariant, QString)> targetValueChanged;
+	boost::signals2::signal<void()> started;
+	boost::signals2::signal<void()> stopped;*/
+signals:
+	void targetValueChanged(QVariant, QString);
+	void started();
+	void stopped();
+private:
+	Q_OBJECT
+};
diff --git a/src/tuxclocker-qt/data/AssignableProxy.cpp b/src/tuxclocker-qt/data/AssignableProxy.cpp
index 901a21b..603d51c 100644
--- a/src/tuxclocker-qt/data/AssignableProxy.cpp
+++ b/src/tuxclocker-qt/data/AssignableProxy.cpp
@@ -1,5 +1,6 @@
 #include "AssignableProxy.hpp"
 
+
 #include <DBusTypes.hpp>
 #include <QDBusReply>
 #include <QDBusMessage>
@@ -16,7 +17,20 @@ AssignableProxy::AssignableProxy(QString path, QDBusConnection conn,
 	m_iface = new QDBusInterface("org.tuxclocker", 
 		path, "org.tuxclocker.Assignable", conn, this);
 }
-	
+
+std::optional<AssignmentError> AssignableProxy::doApply(const QVariant &v) {
+	//qDebug() << v;
+	QDBusReply<TCD::Result<int>> reply = m_iface->call("assign", v);
+	if (reply.isValid()) {
+		TCD::Result<AssignmentError> ar{reply.value().error,
+			static_cast<AssignmentError>(reply.value().value)};
+		//qDebug("Success!");
+		return ar.toOptional();
+	}
+	// TODO: indicate dbus error
+	return AssignmentError::UnknownError;
+}
+
 void AssignableProxy::apply() {
 	// A value hasn't been set yet
 	if (m_value.isNull())
@@ -26,18 +40,21 @@ void AssignableProxy::apply() {
 	QDBusVariant dv(m_value);
 	QVariant v;
 	v.setValue(dv);
-	QDBusReply<TCD::Result<int>> reply = m_iface->call("assign", v);
-	if (reply.isValid()) {
-		qDebug() << reply.value().error << reply.value().value;
-		
-		TCD::Result<AssignmentError> ar{reply.value().error,
-			static_cast<AssignmentError>(reply.value().value)};
-		qDebug("Success!");
-		emit applied(ar.toOptional());
-	}
-	// TODO: Maybe indicate that calling dbus errored out
-	else 
-		emit applied(AssignmentError::UnknownError);
+	emit applied(doApply(v));
 	// Indicate that there's no pending value to applied by making value invalid
 	m_value = QVariant();
 }
+
+void AssignableProxy::startConnection(std::shared_ptr<AssignableConnection> conn) {
+	m_assignableConnection = conn;
+	connect(conn.get(), &AssignableConnection::targetValueChanged, [this](auto targetValue, auto text) {
+		auto err = doApply(targetValue);
+		if (err.has_value())
+			emit connectionValueChanged(err.value(), text);
+		else
+			emit connectionValueChanged(targetValue, text);
+	});
+	// Emit started signal in case a connection emits a new value right away
+	emit connectionStarted();
+	m_assignableConnection->start();
+}
diff --git a/src/tuxclocker-qt/data/AssignableProxy.hpp b/src/tuxclocker-qt/data/AssignableProxy.hpp
index ce82f46..3e54827 100644
--- a/src/tuxclocker-qt/data/AssignableProxy.hpp
+++ b/src/tuxclocker-qt/data/AssignableProxy.hpp
@@ -2,6 +2,7 @@
 
 // Acts as a buffer for unapplied assignables and applies them asynchronously
 
+#include <AssignableConnection.hpp>
 #include <Device.hpp>
 #include <memory>
 #include <QDebug>
@@ -17,12 +18,23 @@ public:
 	AssignableProxy(QString path, QDBusConnection conn,
 		QObject *parent = nullptr);
 	void apply();
+	void startConnection(std::shared_ptr<AssignableConnection> conn);
+	// Stop connection and clear current connection
+	void stopConnection();
 	void setValue(QVariant v) {m_value = v;}
 signals:
 	void applied(std::optional<TC::Device::AssignmentError>);
+	void connectionValueChanged(std::variant<QVariant, TC::Device::AssignmentError>,
+		QString text);
+	void connectionStarted();
+	void connectionStopped();
 private:
 	Q_OBJECT
 	
 	QVariant m_value;
 	QDBusInterface *m_iface;
+	// This is a bit of a peril but not sure if we can store interfaces any better...
+	std::shared_ptr<AssignableConnection> m_assignableConnection;
+
+	std::optional<TC::Device::AssignmentError> doApply(const QVariant &v);
 };
diff --git a/src/tuxclocker-qt/data/DeviceModel.cpp b/src/tuxclocker-qt/data/DeviceModel.cpp
index d2c6aab..1087c8d 100644
--- a/src/tuxclocker-qt/data/DeviceModel.cpp
+++ b/src/tuxclocker-qt/data/DeviceModel.cpp
@@ -2,6 +2,8 @@
 
 #include "AssignableProxy.hpp"
 #include "DynamicReadableProxy.hpp"
+#include "qnamespace.h"
+#include "qstandarditemmodel.h"
 #include <fplus/fplus.hpp>
 #include <QApplication>
 #include <QDBusReply>
@@ -16,6 +18,8 @@ using namespace mpark::patterns;
 using namespace TuxClocker::Device;
 
 Q_DECLARE_METATYPE(AssignableItemData)
+Q_DECLARE_METATYPE(AssignableProxy*)
+Q_DECLARE_METATYPE(DynamicReadableProxy*)
 Q_DECLARE_METATYPE(TCDBus::Enumeration)
 Q_DECLARE_METATYPE(TCDBus::Range)
 Q_DECLARE_METATYPE(EnumerationVec)
@@ -50,13 +54,8 @@ DeviceModel::DeviceModel(TC::TreeNode<TCDBus::DeviceNode> root, QObject *parent)
 				if_let(pattern(some(arg)) = setupAssignable(node, conn))
 						= [&](auto item) {
 					nameItem->setData(Assignable, InterfaceTypeRole);
-					
-					//auto style = QApplication::style();
-					//auto icon = style->standardIcon(QStyle::SP_ComputerIcon);
 					auto icon = assignableIcon();
-					//QIcon icon("/home/jussi/Downloads/wrench.png");
 					nameItem->setData(icon, Qt::DecorationRole);
-					
 					rowItems.append(item);
 				};
 			},
@@ -69,6 +68,7 @@ DeviceModel::DeviceModel(TC::TreeNode<TCDBus::DeviceNode> root, QObject *parent)
 					nameItem->setData(DeviceModel::DynamicReadable,
 						InterfaceTypeRole);
 					rowItems.append(item);
+					//qDebug() << item->data(DynamicReadableProxyRole);
 				};
 			},
 			pattern("org.tuxclocker.StaticReadable") = [=, &rowItems] {
@@ -100,10 +100,35 @@ EnumerationVec toEnumVec(QVector<TCDBus::Enumeration> enums) {
 	}, enums.toStdVector());
 }
 
+std::optional<const AssignableProxy*>
+		DeviceModel::assignableProxyFromItem(QStandardItem *item) {
+	return (m_assignableProxyHash.contains(item)) ?
+		std::optional(m_assignableProxyHash.value(item)) :
+		std::nullopt;
+}
+
 QStandardItem *DeviceModel::createAssignable(TC::TreeNode<TCDBus::DeviceNode> node,
 		QDBusConnection conn, AssignableItemData itemData) {
 	auto ifaceItem = new AssignableItem(this);
 	auto proxy = new AssignableProxy(node.value().path, conn, this);
+	
+	connect(proxy, &AssignableProxy::connectionValueChanged, [=] (auto result, auto text) {
+		p::match(result) (
+			pattern(as<QVariant>(arg)) = [=](auto v) {
+				QVariant data;
+				data.setValue(connectionColor());
+				ifaceItem->setData(data, Qt::BackgroundRole);
+				ifaceItem->setText(text);
+				//qDebug() << text;
+			},
+			pattern(_) = []{}
+		);
+	});
+	
+	
+	QVariant pv;
+	pv.setValue(proxy);
+	ifaceItem->setData(pv, AssignableProxyRole);
 	QVariant v;
 	v.setValue(itemData);
 	ifaceItem->setData(v, AssignableRole);
@@ -159,6 +184,21 @@ QStandardItem *DeviceModel::createAssignable(TC::TreeNode<TCDBus::DeviceNode> no
 	return ifaceItem;
 }
 
+QVariant DeviceModel::data(const QModelIndex &index, int role) const {
+	if (index.row() != DeviceModel::NameColumn && role == DeviceModel::NodeNameRole) {
+		// Get name from adjacent column
+		auto nameIndex =
+			this->index(index.row(), DeviceModel::NameColumn, index.parent());
+		return nameIndex.data(Qt::DisplayRole);
+	}
+	if (index.column() != InterfaceColumn && role == DynamicReadableProxyRole) {
+		auto idx =
+			this->index(index.row(), DeviceModel::InterfaceColumn, index.parent());
+		return idx.data(DynamicReadableProxyRole);
+	}
+	return QStandardItemModel::data(index, role);
+}
+
 std::optional<QStandardItem*> DeviceModel::setupAssignable(
 		TC::TreeNode<TCDBus::DeviceNode> node, QDBusConnection conn) {
 	QDBusInterface ifaceNode("org.tuxclocker", node.value().path,
@@ -197,13 +237,17 @@ void updateReadItemText(QStandardItem *item, T value,
 		QString("%1 %2").arg(value).arg(unit.value()) :
 		QString("%1").arg(value);
 	item->setText(text);
+	//qDebug() << item->data(DeviceModel::DynamicReadableProxyRole);
 }
 
 std::optional<QStandardItem*> DeviceModel::setupDynReadable(
 		TC::TreeNode<TCDBus::DeviceNode> node, QDBusConnection conn) {
 	auto item = new QStandardItem;
 	auto proxy = new DynamicReadableProxy(node.value().path, conn, this);
-	auto unit = proxy->unit();
+	QVariant v;
+	v.setValue(proxy);
+	item->setData(v, DynamicReadableProxyRole);
+	auto unit = proxy->unit();	
 	
 	connect(proxy, &DynamicReadableProxy::valueChanged, [=](ReadResult res) {
 		p::match(res)(
diff --git a/src/tuxclocker-qt/data/DeviceModel.hpp b/src/tuxclocker-qt/data/DeviceModel.hpp
index df38a9a..883ef7e 100644
--- a/src/tuxclocker-qt/data/DeviceModel.hpp
+++ b/src/tuxclocker-qt/data/DeviceModel.hpp
@@ -2,23 +2,26 @@
 
 #include "AssignableItem.hpp"
 #include "AssignableItemData.hpp"
+#include "DynamicReadableProxy.hpp"
 
 #include <DBusTypes.hpp>
 #include <Device.hpp>
 #include <patterns.hpp>
-#include <Tree.hpp>
 #include <QDBusConnection>
 #include <QDBusInterface>
 #include <QFlags>
+#include <QHash>
 #include <QIcon>
 #include <QStandardItemModel>
 #include <QPalette>
+#include <Tree.hpp>
 
 namespace TC = TuxClocker;
 namespace TCDBus = TuxClocker::DBus;
 
 // Why the fuck do I have to forward declare this?
 class AssignableItem;
+class AssignableProxy;
 
 class DeviceModel : public QStandardItemModel {
 public:
@@ -30,8 +33,11 @@ public:
 	
 	enum Role {
 		AssignableRole = Qt::UserRole, // Holds the data about the assignable
+		AssignableProxyRole,
 		ConnectionRole, // Data about the connection
-		InterfaceTypeRole // InterfaceType
+		DynamicReadableProxyRole,
+		InterfaceTypeRole, // InterfaceType
+		NodeNameRole // 
 	};
 	
 	enum InterfaceFlag {
@@ -41,14 +47,15 @@ public:
 		AllInterfaces = (Assignable | DynamicReadable | StaticReadable)
 	};
 	typedef QFlags<InterfaceFlag> InterfaceFlags;
-	
-	enum class FilterFlag {
-		
-	};
+
 	// For decoupling AssignableItems created in the model
 	void applyChanges() {emit changesApplied();}
-	
+	QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
 	static QIcon assignableIcon() {return QIcon::fromTheme("edit-entry");}
+	// Get AssignableProxy of an item
+	std::optional<const AssignableProxy*> assignableProxyFromItem(QStandardItem *item);
+	// AssignableProxies are associated with both row items
+	//QVariant data(QModelIndex&);
 	static QIcon dynamicReadableIcon() {return QIcon(":/ruler.svg");}
 	static QIcon staticReadableIcon() {return QIcon::fromTheme("help-about");}
 signals:
@@ -56,6 +63,8 @@ signals:
 private:
 	Q_OBJECT
 	
+	QHash<QStandardItem*, AssignableProxy*> m_assignableProxyHash;
+	
 	// Separate handling interfaces since otherwise we run out of columns
 	QStandardItem *createAssignable(TC::TreeNode<TCDBus::DeviceNode> node,
 		QDBusConnection conn, AssignableItemData data);
@@ -68,6 +77,7 @@ private:
 	constexpr int fadeOutTime() {return 5000;} // milliseconds
 	constexpr int transparency() {return 120;} // 0-255
 	// Colors for items
+	QColor connectionColor() {return QColor(0, 0, 255, transparency());} // blue
 	QColor errorColor() {return QColor(255, 0, 0, transparency());} // red
 	QColor unappliedColor() {return QColor(255, 255, 0, transparency());} // yellow
 	QColor successColor() {return QColor(0, 255, 0, transparency());} // green
diff --git a/src/tuxclocker-qt/data/DeviceProxyModel.cpp b/src/tuxclocker-qt/data/DeviceProxyModel.cpp
index cc21475..117a72d 100644
--- a/src/tuxclocker-qt/data/DeviceProxyModel.cpp
+++ b/src/tuxclocker-qt/data/DeviceProxyModel.cpp
@@ -5,7 +5,8 @@
 Q_DECLARE_METATYPE(DeviceModel::InterfaceFlag)
 
 DeviceProxyModel::DeviceProxyModel(DeviceModel &model, QObject *parent) :
-		QSortFilterProxyModel(parent), m_showIcons(true), m_showValueColumn(true) {
+		QSortFilterProxyModel(parent), m_disableFiltered(false),
+		m_showIcons(true), m_showValueColumn(true) {
 	setSourceModel(&model);
 	m_flags = DeviceModel::AllInterfaces;
 }
@@ -37,6 +38,22 @@ bool DeviceProxyModel::filterAcceptsRow(int sourceRow,
 	return !shouldHide;
 }
 
+Qt::ItemFlags DeviceProxyModel::flags(const QModelIndex &index) const {
+	if (!m_disableFiltered)
+		return QSortFilterProxyModel::flags(index);
+	
+	auto iface = 
+		QSortFilterProxyModel::data(index, DeviceModel::InterfaceTypeRole);
+	auto removedFlags = Qt::ItemIsSelectable;
+	auto itemFlags = QSortFilterProxyModel::flags(index);
+	if (!iface.isValid())
+		// Remove selectable flag
+		return itemFlags &(~removedFlags);
+	auto flags = iface.value<DeviceModel::InterfaceFlag>();
+	return (flags & m_flags) ? itemFlags :
+		itemFlags &(~removedFlags);
+}
+
 bool DeviceProxyModel::lessThan(const QModelIndex &left,
 		const QModelIndex &right) const {
 	// TODO: doesn't work as expected if sorted from interface column
diff --git a/src/tuxclocker-qt/data/DeviceProxyModel.hpp b/src/tuxclocker-qt/data/DeviceProxyModel.hpp
index 7a558e8..a69f336 100644
--- a/src/tuxclocker-qt/data/DeviceProxyModel.hpp
+++ b/src/tuxclocker-qt/data/DeviceProxyModel.hpp
@@ -9,6 +9,8 @@ class DeviceProxyModel : public QSortFilterProxyModel {
 public:
 	DeviceProxyModel(DeviceModel &model, QObject *parent = nullptr);
 	DeviceModel::InterfaceFlags filterFlags() {return m_flags;}
+	// Disable items that don't contain the interface in m_flags
+	void setDisableFiltered(bool on) {m_disableFiltered = on;}
 	void setFlags(DeviceModel::InterfaceFlags flags) {
 		m_flags = flags;
 		invalidateFilter();
@@ -37,9 +39,12 @@ protected:
 			const override {
 		return !(!m_showValueColumn && sourceColumn == DeviceModel::InterfaceColumn);
 	}
+	// Optionally disable selection of items that don't have the wanted interface
+	Qt::ItemFlags flags(const QModelIndex &index) const override;
 	// Overridden for showing items with children last/first
 	bool lessThan(const QModelIndex &left, const QModelIndex &right) const override;
 private:
+	bool m_disableFiltered;
 	bool m_showIcons;
 	bool m_showValueColumn;
 	DeviceModel::InterfaceFlags m_flags;
diff --git a/src/tuxclocker-qt/data/DynamicReadableConnection.hpp b/src/tuxclocker-qt/data/DynamicReadableConnection.hpp
new file mode 100644
index 0000000..a0649c4
--- /dev/null
+++ b/src/tuxclocker-qt/data/DynamicReadableConnection.hpp
@@ -0,0 +1,106 @@
+#pragma once
+
+#include "AssignableConnection.hpp"
+#include <DynamicReadableProxy.hpp>
+#include <fplus/fplus.hpp>
+#include <patterns.hpp>
+#include <QDBusVariant>
+#include <QDebug>
+#include <QPointF>
+#include <QRandomGenerator>
+#include <QTimer>
+#include <QVector>
+#include <memory>
+
+// delete these
+using namespace fplus;
+using namespace mpark::patterns;
+using namespace TuxClocker::Device;
+
+class DynamicReadableConnectionData {
+public:
+	// y = f(x)
+	QVector<QPointF> points;
+	// DBus path
+	QString dynamicReadablePath;
+};
+
+// TODO: make DynamicReadableProxy type parametrized so we can be sure to only get numeric values from it
+// Connection of an Assignable with a DynamicReadable
+template <typename OutType> // Result of linear interpolation
+class DynamicReadableConnection : public AssignableConnection {
+public:
+	DynamicReadableConnection(DynamicReadableProxy &proxy,
+		QVector<QPointF> points, QObject *parent = nullptr)
+		: AssignableConnection(parent), m_proxy(proxy), m_points(points) {
+			auto sorted = sort_by([](auto point_l, auto point_r) {
+				return point_l.x() < point_r.x();
+			}, m_points);
+			m_points = sorted;
+		}
+	virtual QVariant connectionData() override {return QVariant();}
+	virtual void start() override {
+		/*QObject::connect(&m_timer, &QTimer::timeout, [this] {
+			int rand = QRandomGenerator::global()->bounded(0, 10);
+
+			QDBusVariant arg{QVariant{rand}};
+			QVariant v;
+			v.setValue(arg);
+			emit targetValueChanged(v, QString::number(rand));
+		});
+		m_timer.start(1000);*/
+
+		connect(&m_proxy, &DynamicReadableProxy::valueChanged, [this](auto val) {
+			match(val) (
+				pattern(as<ReadableValue>(arg)) = [this](auto rv) {
+					match(rv) (
+						pattern(as<uint>(arg)) = [this](auto u) {
+							emitTargetValue(u);
+						}
+					);
+				}
+			);
+		});
+
+		/*QDBusVariant arg{QVariant{1}};
+		QVariant v;
+		v.setValue(arg);
+		emit targetValueChanged(v, "1");*/
+
+	}
+	virtual void stop() override {
+	}
+private:
+	DynamicReadableProxy &m_proxy;
+	QTimer m_timer;
+	QVector<QPointF> m_points;
+
+	template <typename U>
+	void emitTargetValue(U reading) {
+		// Find two points from the vector so that:
+		//   p[i].x < val < p[i + 1].x 
+		std::optional<int> leftIndex = std::nullopt;
+		for (int i = 0; i < m_points.length() - 1; i++) {
+			if (m_points[i].x() < reading && reading < m_points[i + 1].x()) {
+				leftIndex = i;
+				break;
+			}
+		}
+		if (leftIndex == std::nullopt)
+			return;
+		int li = leftIndex.value();
+		// What percentage the value is from dx of left and right interp points
+		double dx = m_points[li + 1].x() - m_points[li].x();
+		double dvx = reading - m_points[li].x();
+		double p = dvx / dx;
+		OutType interp_y = lerp(m_points[li].y(),
+			m_points[li + 1].y(), p);
+		QDBusVariant arg{QVariant{interp_y}};
+		QVariant v;
+		v.setValue(arg);
+		emit targetValueChanged(v, QString::number(interp_y));
+	}
+
+	template <typename T>
+	T lerp(T a, T b, double t) {return a + (t * (b - a));}
+};
diff --git a/src/tuxclocker-qt/main.cpp b/src/tuxclocker-qt/main.cpp
index ae70f18..0dea939 100644
--- a/src/tuxclocker-qt/main.cpp
+++ b/src/tuxclocker-qt/main.cpp
@@ -4,7 +4,7 @@
 
 int main(int argc, char **argv) {
 	QApplication app(argc, argv);
-	
+
 	MainWindow mw;
 	mw.show();
 	
diff --git a/src/tuxclocker-qt/meson.build b/src/tuxclocker-qt/meson.build
index 0a7643c..08313ca 100644
--- a/src/tuxclocker-qt/meson.build
+++ b/src/tuxclocker-qt/meson.build
@@ -5,9 +5,11 @@ qt5_dep = dependency('qt5', modules: ['DBus', 'Charts', 'Widgets'])
 boost_dep = dependency('boost')
 
 moc_files = qt5.preprocess(moc_headers: ['MainWindow.hpp',
+		'data/AssignableConnection.hpp',
 		'data/AssignableItem.hpp',
 		'data/AssignableProxy.hpp',
 		'data/DeviceModel.hpp',
+		'data/DynamicReadableConnection.hpp',
 		'data/DynamicReadableProxy.hpp',
 		'widgets/DragChartView.hpp'],
 	qresources : ['resources/resources.qrc'],
@@ -20,6 +22,7 @@ sources = ['main.cpp',
 	'data/DeviceModelDelegate.cpp',
 	'data/DeviceProxyModel.cpp',
 	'data/DynamicReadableProxy.cpp',
+	'widgets/DeviceBrowser.cpp',
 	'widgets/DeviceTreeView.cpp',
 	'widgets/DragChartView.cpp',
 	'widgets/EnumEditor.cpp',
diff --git a/src/tuxclocker-qt/widgets/DeviceBrowser.cpp b/src/tuxclocker-qt/widgets/DeviceBrowser.cpp
new file mode 100644
index 0000000..9a50853
--- /dev/null
+++ b/src/tuxclocker-qt/widgets/DeviceBrowser.cpp
@@ -0,0 +1,89 @@
+#include "DeviceBrowser.hpp"
+#include "AssignableItemData.hpp"
+#include "qnamespace.h"
+
+#include <patterns.hpp>
+#include <QVariant>
+
+using namespace mpark::patterns;
+using namespace TuxClocker::Device;
+
+Q_DECLARE_METATYPE(AssignableItemData)
+Q_DECLARE_METATYPE(AssignableProxy*)
+
+DeviceBrowser::DeviceBrowser(DeviceModel &model, QWidget *parent) 
+			: QWidget(parent), m_deviceModel(model) {
+	m_layout = new QGridLayout(this);
+	m_proxyModel = new DeviceProxyModel(model, this);
+	m_treeView = new DeviceTreeView;
+	m_treeView->setModel(m_proxyModel);
+	m_flagLabel = new QLabel("Showing:");
+	m_apply = new QPushButton("Apply changes");
+	m_apply->setEnabled(true);
+	
+	m_flagEditor = new FlagEditor(
+		QVector({
+			std::tuple(
+				QString("Assignables"),
+				DeviceModel::assignableIcon(),
+				DeviceModel::Assignable
+			),
+			std::tuple(
+				QString("Dynamic Values"),
+				DeviceModel::dynamicReadableIcon(),
+				DeviceModel::DynamicReadable
+			),
+			std::tuple(
+				QString("Static Values"),
+				DeviceModel::staticReadableIcon(),
+				DeviceModel::StaticReadable
+			)
+		}), this);
+	
+	connect(m_apply, &QPushButton::pressed, &m_deviceModel,
+		&DeviceModel::applyChanges);
+	
+	m_treeView->functionEditorRequested.connect([this](QModelIndex &index) {
+		auto a_data = index.data(DeviceModel::AssignableRole);
+		if (!a_data.isValid())
+			return;
+
+		auto a_info = a_data.value<AssignableItemData>();
+		auto proxy = index.data(DeviceModel::AssignableProxyRole)
+			.value<AssignableProxy*>();
+		auto name = index.data(DeviceModel::NodeNameRole).toString();
+		match(a_info.assignableInfo()) (
+			pattern(as<RangeInfo>(arg)) = [=](auto ri) {
+				auto f_editor = new FunctionEditor{m_deviceModel,
+					ri, *proxy, name};
+				f_editor->show();
+				f_editor->assignableConnectionChanged
+						.connect([=](auto conn) {
+					proxy->startConnection(conn);
+				});
+			},
+			pattern(_) = [] {}
+		);
+
+		/*auto f_editor = new FunctionEditor(m_deviceModel, rangeInfo, proxy);
+		f_editor->show();
+
+		f_editor->assignableConnectionChanged.connect(
+				[&proxy] (auto assignableConnection) {
+			proxy.startConnection(assignableConnection);
+		});*/
+	});
+	
+	m_flagEditor->setFlags(DeviceModel::AllInterfaces);
+	
+	m_flagEditor->flagsChanged.connect([=](auto flags) {
+		m_proxyModel->setFlags(flags);
+	});
+	
+	m_layout->addWidget(m_flagLabel, 0, 0);
+	m_layout->addWidget(m_flagEditor, 0, 1);
+	m_layout->addWidget(m_treeView, 1, 0, 1, 2);
+	m_layout->addWidget(m_apply, 2, 0, 1, 2);
+	
+	setLayout(m_layout);
+}
diff --git a/src/tuxclocker-qt/widgets/DeviceBrowser.hpp b/src/tuxclocker-qt/widgets/DeviceBrowser.hpp
index 8d51376..a71896e 100644
--- a/src/tuxclocker-qt/widgets/DeviceBrowser.hpp
+++ b/src/tuxclocker-qt/widgets/DeviceBrowser.hpp
@@ -4,7 +4,7 @@
 #include <DeviceModel.hpp>
 #include <DeviceProxyModel.hpp>
 #include <FlagEditor.hpp>
-//#include <FunctionEditor.hpp>
+#include <FunctionEditor.hpp>
 #include <QDebug>
 #include <QGridLayout>
 #include <QLabel>
@@ -14,57 +14,7 @@
 // Class for viewing/editing the main tuxclocker tree
 class DeviceBrowser : public QWidget {
 public:
-	DeviceBrowser(DeviceModel &model, QWidget *parent = nullptr)
-			: QWidget(parent), m_deviceModel(model) {
-		m_layout = new QGridLayout(this);
-		m_proxyModel = new DeviceProxyModel(model, this);
-		m_treeView = new DeviceTreeView;
-		m_treeView->setModel(m_proxyModel);
-		m_flagLabel = new QLabel("Showing:");
-		m_apply = new QPushButton("Apply changes");
-		m_apply->setEnabled(true);
-		
-		m_flagEditor = new FlagEditor(
-			QVector({
-				std::tuple(
-					QString("Assignables"),
-					DeviceModel::assignableIcon(),
-					DeviceModel::Assignable
-				),
-				std::tuple(
-					QString("Dynamic Values"),
-					DeviceModel::dynamicReadableIcon(),
-					DeviceModel::DynamicReadable
-				),
-				std::tuple(
-					QString("Static Values"),
-					DeviceModel::staticReadableIcon(),
-					DeviceModel::StaticReadable
-				)
-			}), this);
-		
-		connect(m_apply, &QPushButton::pressed, &m_deviceModel,
-			&DeviceModel::applyChanges);
-		
-		m_treeView->functionEditorRequested.connect([this] {
-			//auto f_editor = new FunctionEditor(m_deviceModel);
-			//f_editor->show();
-		});
-		
-		m_flagEditor->setFlags(DeviceModel::AllInterfaces);
-		
-		m_flagEditor->flagsChanged.connect([=](auto flags) {
-			m_proxyModel->setFlags(flags);
-		});
-		
-		m_layout->addWidget(m_flagLabel, 0, 0);
-		m_layout->addWidget(m_flagEditor, 0, 1);
-		m_layout->addWidget(m_treeView, 1, 0, 1, 2);
-		m_layout->addWidget(m_apply, 2, 0, 1, 2);
-		
-		setLayout(m_layout);
-	}
-	
+	DeviceBrowser(DeviceModel &model, QWidget *parent = nullptr);
 private:
 	DeviceModel &m_deviceModel;
 	DeviceProxyModel *m_proxyModel;
diff --git a/src/tuxclocker-qt/widgets/DeviceTreeView.cpp b/src/tuxclocker-qt/widgets/DeviceTreeView.cpp
index 16e2784..8f09e02 100644
--- a/src/tuxclocker-qt/widgets/DeviceTreeView.cpp
+++ b/src/tuxclocker-qt/widgets/DeviceTreeView.cpp
@@ -1,45 +1,50 @@
 #include "DeviceTreeView.hpp"
+#include "qcheckbox.h"
 
 #include <DragChartView.hpp>
-//#include <FunctionEditor.hpp>
+#include <patterns.hpp>
 #include <QCheckBox>
 #include <QDebug>
+#include <QHeaderView>
+
+using namespace mpark::patterns;
+using namespace TuxClocker::Device;
 
 Q_DECLARE_METATYPE(AssignableItemData)
+Q_DECLARE_METATYPE(AssignableProxy*)
 
 DeviceTreeView::DeviceTreeView(QWidget *parent)
 		: QTreeView(parent) {
+	header()->setSectionResizeMode(QHeaderView::ResizeToContents);
 	setSortingEnabled(true);
-	auto triggers = editTriggers() ^= DoubleClicked;
-	triggers |= SelectedClicked;
 	setEditTriggers(SelectedClicked | EditKeyPressed);
 	setContextMenuPolicy(Qt::CustomContextMenu);
 	connect(this, &QTreeView::customContextMenuRequested, [this](QPoint point) {
 		auto index = indexAt(point);
 		auto data = index.data(DeviceModel::AssignableRole);
+		auto proxyData = index.data(DeviceModel::AssignableProxyRole);
 		QMenu menu;
-		if (data.canConvert<AssignableItemData>()) {
+		QCheckBox checkBox("Enable connection");
+		QAction editConn("Edit connection...");
+		auto enableConn = new QWidgetAction(&menu);
+		enableConn->setDefaultWidget(&checkBox);
+		menu.addActions({&editConn, enableConn});
+		if (data.canConvert<AssignableItemData>() &&
+				proxyData.canConvert<AssignableProxy*>()) {
+			functionEditorRequested(index);
 			/*auto a_data = data.value<AssignableItemData>();
-			QCheckBox commitCb("Commit");
-			auto commitAct = new QWidgetAction(&menu);
-			commitAct->setDefaultWidget(&commitCb);
-			commitCb.setChecked(a_data.committal());
-			connect(&commitCb, &QCheckBox::toggled, [&](bool toggled) {
-				a_data.setCommittal(toggled);
-			});
-			// Write the committal value to the model only on menu close
-			connect(&menu, &QMenu::aboutToHide, [&] {
-				QVariant v;
-				v.setValue(a_data);
-				m_deviceModel.setData(index, v, DeviceModel::AssignableRole);
-			});
-			menu.addAction(commitAct);
-			menu.exec(QCursor::pos());*/
+			auto proxy = proxyData.value<AssignableProxy*>();
+			match(a_data.assignableInfo()) (
+				pattern(as<RangeInfo>(arg)) = [this, &menu, proxy, &editConn](auto ri) {
+					//functionEditorRequested(*proxy, ri);
+					connect(&editConn, &QAction::triggered, [this, proxy, ri] {
+						functionEditorRequested(*proxy, ri);
+					});
+					menu.exec(QCursor::pos());
+				},
+				pattern(_) = []{}
+			);*/
 			
-			//auto dragView = new FunctionEditor;
-			//dragView->show();
-			
-			functionEditorRequested();
 		}
 	});
 	m_delegate = new DeviceModelDelegate(this);
diff --git a/src/tuxclocker-qt/widgets/DeviceTreeView.hpp b/src/tuxclocker-qt/widgets/DeviceTreeView.hpp
index faaf684..bf407a6 100644
--- a/src/tuxclocker-qt/widgets/DeviceTreeView.hpp
+++ b/src/tuxclocker-qt/widgets/DeviceTreeView.hpp
@@ -1,7 +1,9 @@
 #pragma once
 
 #include <AssignableItemData.hpp>
+#include <AssignableProxy.hpp>
 #include <boost/signals2.hpp>
+#include <Device.hpp>
 #include <DeviceModel.hpp>
 #include <DeviceModelDelegate.hpp>
 #include <QMenu>
@@ -14,7 +16,9 @@ public:
 	DeviceTreeView(QWidget *parent = nullptr);
 	// Accessor method for connecting everything in the browser
 	//const DeviceModel &deviceModel() {return m_deviceModel;}
-	boost::signals2::signal<void()> functionEditorRequested;
+	// TODO: make this more generalized
+	// Defers the complexity to DeviceBrowser
+	boost::signals2::signal<void(QModelIndex&)> functionEditorRequested;
 protected:
 	/* Workaround for the retarded behavior of waiting for a double click,
 	   you can't even disable it! */
diff --git a/src/tuxclocker-qt/widgets/DragChartView.cpp b/src/tuxclocker-qt/widgets/DragChartView.cpp
index af449f5..4e6cfe7 100644
--- a/src/tuxclocker-qt/widgets/DragChartView.cpp
+++ b/src/tuxclocker-qt/widgets/DragChartView.cpp
@@ -176,6 +176,12 @@ void DragChartView::setVector(const QVector <QPointF> vector) {
     m_series.replace(vector);
 }
 
+void DragChartView::setRange(qreal xmin, qreal xmax, qreal ymin, qreal ymax) {
+	m_series.clear();
+	m_xAxis.setRange(xmin, xmax);
+	m_yAxis.setRange(ymin, ymax);
+}
+
 bool DragChartView::event(QEvent *event) {
     //qDebug() << event->type();
 
@@ -227,7 +233,10 @@ void DragChartView::mouseMoveEvent(QMouseEvent *event) {
         m_toolTipLabel->show();
     }
 
-    m_toolTipLabel->setText(QString("%1, %2").arg(QString::number(m_latestScatterPoint.x()), QString::number(m_latestScatterPoint.y())));
+    m_toolTipLabel->setText(QString("%1, %2")
+		.arg(QString::number(m_latestScatterPoint.x()),
+		QString::number(m_latestScatterPoint.y())));
+	
     // FIXME : doesn't work properly when screen is switched(?)
     m_toolTipLabel->move(event->screenPos().toPoint() + toolTipOffset(this, event->windowPos().toPoint()));
     
@@ -324,14 +333,17 @@ void DragChartView::drawFillerLines(QScatterSeries *series) {
 
     for (int i = 0; i < sorted.length() - 1; i++) {
         m_lineFillerItems[i]->setLine(QLineF(chart()->mapToPosition(sorted[i]),
-                                             chart()->mapToPosition(sorted[i + 1])));
+			chart()->mapToPosition(sorted[i + 1])));
     }
 
-    m_leftLineFillerItem->setLine(QLineF(chart()->mapToPosition(QPointF(m_xAxis.min(), sorted[0].y())),
-                                         chart()->mapToPosition(sorted[0])));
+    m_leftLineFillerItem->setLine(
+		QLineF(chart()->mapToPosition(QPointF(
+			m_xAxis.min(), sorted[0].y())),
+		chart()->mapToPosition(sorted[0])));
 
-    m_rightLineFillerItem->setLine(QLineF(chart()->mapToPosition(sorted.last()),
-                                          chart()->mapToPosition(QPointF(m_xAxis.max(), sorted.last().y()))));
+    m_rightLineFillerItem->setLine(
+		QLineF(chart()->mapToPosition(sorted.last()),
+        chart()->mapToPosition(QPointF(m_xAxis.max(), sorted.last().y()))));
 
     chart()->update();
 }
diff --git a/src/tuxclocker-qt/widgets/DragChartView.hpp b/src/tuxclocker-qt/widgets/DragChartView.hpp
index 8749ade..29ca538 100644
--- a/src/tuxclocker-qt/widgets/DragChartView.hpp
+++ b/src/tuxclocker-qt/widgets/DragChartView.hpp
@@ -10,11 +10,13 @@ using namespace QtCharts;
 class DragChartView : public QChartView {
 public:
     DragChartView(QWidget *parent = nullptr);
-    QValueAxis *xAxis() {return &m_xAxis;}
-    QValueAxis *yAxis() {return &m_yAxis;}
+    QValueAxis &xAxis() {return m_xAxis;}
+    QValueAxis &yAxis() {return m_yAxis;}
     
     void setVector(const QVector <QPointF> vector);
     QVector <QPointF> vector() {return m_series.pointsVector();}
+    // Clear the points and set new range
+    void setRange(qreal xmin, qreal xmax, qreal ymin, qreal ymax); 
 protected:
     bool event(QEvent*);
     void mousePressEvent(QMouseEvent*);
diff --git a/src/tuxclocker-qt/widgets/FlagEditor.hpp b/src/tuxclocker-qt/widgets/FlagEditor.hpp
index a305a1b..2779818 100644
--- a/src/tuxclocker-qt/widgets/FlagEditor.hpp
+++ b/src/tuxclocker-qt/widgets/FlagEditor.hpp
@@ -94,6 +94,9 @@ protected:
 		QStylePainter painter(this);
 		QStyleOptionComboBox opt;
 		initStyleOption(&opt);
+		QPalette rp;
+		rp.setColor(QPalette::Highlight, Qt::red);
+		opt.palette = rp;
 		
 		// Show which flags are selected
 		auto items = m_flagHash.values();
diff --git a/src/tuxclocker-qt/widgets/FunctionEditor.hpp b/src/tuxclocker-qt/widgets/FunctionEditor.hpp
new file mode 100644
index 0000000..fa8ea4d
--- /dev/null
+++ b/src/tuxclocker-qt/widgets/FunctionEditor.hpp
@@ -0,0 +1,122 @@
+#pragma once
+
+/* Widget for editing the function for an assignable.
+   Possible options, where y = value of assignable, t = time,
+   x = value of readable, n = static value set in model editor:
+   - y = n
+   - y = f(x)
+   - y = f(t)
+*/
+
+#include "DynamicReadableProxy.hpp"
+#include "qnamespace.h"
+#include <AssignableConnection.hpp>
+#include <AssignableProxy.hpp>
+#include <boost/signals2.hpp>
+#include <DeviceProxyModel.hpp>
+#include <DragChartView.hpp>
+#include <DynamicReadableConnection.hpp>
+#include <NodeSelector.hpp>
+#include <patterns.hpp>
+#include <QAbstractItemView>
+#include <QComboBox>
+#include <QDebug>
+#include <QGridLayout>
+#include <QLabel>
+#include <QModelIndex>
+#include <QPushButton>
+#include <QTimer>
+#include <QWidget>
+
+// Delet this
+namespace p = mpark::patterns;
+
+Q_DECLARE_METATYPE(DynamicReadableProxy*)
+
+// TODO: make constructor of the type data Editor a = Maybe (Range a)
+class FunctionEditor : public QWidget {
+public:
+	FunctionEditor(DeviceModel &model, TuxClocker::Device::RangeInfo rangeInfo,
+			AssignableProxy &proxy, QString nodeName,
+			QWidget *parent = nullptr)
+			: QWidget(parent), m_assignableProxy(proxy),
+			  m_model(model), m_proxyModel(model),
+			  m_rangeInfo(rangeInfo) {
+		m_proxyModel.setDisableFiltered(true);
+		m_proxyModel.setFlags(DeviceModel::DynamicReadable);
+		m_proxyModel.setShowIcons(false);
+		//m_proxyModel.setShowValueColumn(false);
+		m_layout = new QGridLayout(this);
+		m_functionComboBox = new QComboBox;
+		m_functionComboBox->addItem("Function of time");
+		m_dependableReadableComboBox = new NodeSelector;
+		auto treeView = new QTreeView;
+		m_dependableReadableComboBox->setModel(&m_proxyModel);
+		m_dependableReadableComboBox->setView(treeView);
+		treeView->expandAll();
+		m_dependableLabel = new QLabel("Connecting with:");
+		m_layout->addWidget(m_dependableReadableComboBox, 0, 0);
+		m_layout->addWidget(m_functionComboBox, 0, 1);
+		m_dragView = new DragChartView;
+		
+		p::match(rangeInfo) (
+			p::pattern(p::as<TuxClocker::Device::Range<double>>(p::arg))
+					= [this](auto dr) {
+				m_dragView->setRange(0, 100, dr.min, dr.max);
+			},
+			p::pattern(p::as<TuxClocker::Device::Range<int>>(p::arg))
+					= [this](auto ir) {
+				m_dragView->setRange(0, 100, ir.min, ir.max);
+			}
+		);
+		//m_dragView->setRange(0, 100, 0, 100);
+		m_layout->addWidget(m_dragView, 1, 0, 1, 2);
+		m_applyButton = new QPushButton("Apply");
+		// No connection to apply at first
+		m_applyButton->setEnabled(false);
+		m_cancelButton = new QPushButton("Cancel");
+		m_layout->addWidget(m_cancelButton, 2, 0, 1, 1);
+		m_layout->addWidget(m_applyButton, 2, 1, 1, 1);
+		
+		connect(m_applyButton, &QPushButton::clicked, [this] {
+			auto proxy = m_latestNodeIndex
+				.data(DeviceModel::DynamicReadableProxyRole)
+				.value<DynamicReadableProxy*>();
+			//qDebug() << proxy;
+			auto points = m_dragView->vector();
+			if (points.length() < 2)
+				return;
+			//qDebug() << points;
+			auto conn = std::make_shared<DynamicReadableConnection<int>>(
+				*proxy, points);
+			assignableConnectionChanged(conn);
+		});
+	
+		m_dragView->yAxis().setTitleText(nodeName);
+
+		m_dependableReadableComboBox->indexChanged
+				.connect([this](auto &index) {
+			m_latestNodeIndex = index;
+			m_applyButton->setEnabled(true);
+			auto nodeName = index.data(Qt::DisplayRole).toString();
+			m_dragView->xAxis().setTitleText(nodeName);
+		});
+
+		setLayout(m_layout);
+	}
+	boost::signals2::signal<void(std::shared_ptr<AssignableConnection>)>
+		assignableConnectionChanged;
+private:
+	AssignableProxy &m_assignableProxy;
+	DeviceModel &m_model;
+	DeviceProxyModel m_proxyModel;
+	DragChartView *m_dragView;
+	//NodeSelector *m_nodeSelector;
+	QComboBox *m_functionComboBox;
+	NodeSelector *m_dependableReadableComboBox;
+	QGridLayout *m_layout;
+	QLabel *m_dependableLabel;
+	QModelIndex m_latestNodeIndex;
+	QPushButton *m_applyButton, *m_cancelButton;
+	TuxClocker::Device::RangeInfo m_rangeInfo;
+};
diff --git a/src/tuxclocker-qt/widgets/NodeSelector.hpp b/src/tuxclocker-qt/widgets/NodeSelector.hpp
new file mode 100644
index 0000000..a90d650
--- /dev/null
+++ b/src/tuxclocker-qt/widgets/NodeSelector.hpp
@@ -0,0 +1,65 @@
+#pragma once
+
+#include <boost/signals2.hpp>
+#include <QApplication>
+#include <QComboBox>
+#include <QDebug>
+#include <QEvent>
+#include <QMouseEvent>
+#include <QScrollBar>
+
+// TODO: If a disabled item is clicked, the item that is highlighted get selected instead
+class NodeSelector : public QComboBox {
+public:
+	NodeSelector(QWidget *parent = nullptr) : QComboBox(parent),
+			m_skipNextHide(false) {
+		view()->viewport()->installEventFilter(this);
+	}
+	bool eventFilter(QObject *obj, QEvent *ev) {
+		if (ev->type() == QEvent::MouseButtonPress && obj == view()->viewport()) {
+			auto mouse_ev = static_cast<QMouseEvent*>(ev);
+			auto index = view()->indexAt(mouse_ev->pos());
+			// Hide popup when an enabled item is clicked
+			if (!view()->visualRect(index).contains(mouse_ev->pos()) ||
+					!(model()->flags(index) & Qt::ItemIsEnabled))
+				m_skipNextHide = true;
+			else if (model()->flags(index) & Qt::ItemIsSelectable) {
+				qDebug() << index.data(DeviceModel::DynamicReadableProxyRole);
+				indexChanged(index);
+				m_skipNextHide = false;
+			}
+		}
+		return QComboBox::eventFilter(obj, ev);
+	}
+	virtual void hidePopup() override {
+		if (m_skipNextHide)
+			m_skipNextHide = false;
+		else
+			QComboBox::hidePopup();
+	}
+	/*void mouseReleaseEvent(QMouseEvent *event) override {
+		auto index = view()->indexAt(event->pos());
+		if (!view()->visualRect(index).contains(event->pos()) ||
+				!(model()->flags(index) & Qt::ItemIsEnabled))
+			qDebug() << index.data();
+		
+		QComboBox::mouseReleaseEvent(event);
+	}*/
+	void setView(QAbstractItemView *view) {
+		// Why no signal, Qt?
+		view->viewport()->installEventFilter(this);
+
+		QComboBox::setView(view);
+	}
+	virtual void showPopup() override {
+		// TODO: don't account for scrollbar width when it isn't visible
+		// This is quite a weird way to do it but it works
+		auto vBarWidth =
+			QApplication::style()->pixelMetric(QStyle::PM_ScrollBarExtent);
+		view()->setMinimumWidth(view()->sizeHintForColumn(0) + vBarWidth);
+		QComboBox::showPopup();
+	}
+	boost::signals2::signal<void(QModelIndex&)> indexChanged;
+private:
+	bool m_skipNextHide;
+};