diff --git a/arduino-ide-extension/src/browser/arduino-commands.ts b/arduino-ide-extension/src/browser/arduino-commands.ts
index 0629e024..9c8e1dd7 100644
--- a/arduino-ide-extension/src/browser/arduino-commands.ts
+++ b/arduino-ide-extension/src/browser/arduino-commands.ts
@@ -42,15 +42,4 @@ export namespace ArduinoCommands {
     export const TOGGLE_PRO_MODE: Command = {
         id: "arduino-toggle-pro-mode"
     }
-
-    export const CONNECT_TODO: Command = {
-        id: 'connect-to-attached-board',
-        label: 'Connect to Attached Board'
-    }
-
-    export const SEND: Command = {
-        id: 'send',
-        label: 'Send a Message to the Connected Board'
-    }
-
 }
diff --git a/arduino-ide-extension/src/browser/arduino-frontend-contribution.tsx b/arduino-ide-extension/src/browser/arduino-frontend-contribution.tsx
index 870b2766..5dabaac0 100644
--- a/arduino-ide-extension/src/browser/arduino-frontend-contribution.tsx
+++ b/arduino-ide-extension/src/browser/arduino-frontend-contribution.tsx
@@ -5,7 +5,7 @@ import { EditorWidget } from '@theia/editor/lib/browser/editor-widget';
 import { MessageService } from '@theia/core/lib/common/message-service';
 import { CommandContribution, CommandRegistry, Command } from '@theia/core/lib/common/command';
 import { TabBarToolbarContribution, TabBarToolbarRegistry } from '@theia/core/lib/browser/shell/tab-bar-toolbar';
-import { BoardsService, AttachedSerialBoard } from '../common/protocol/boards-service';
+import { BoardsService } from '../common/protocol/boards-service';
 import { ArduinoCommands } from './arduino-commands';
 import { CoreService } from '../common/protocol/core-service';
 import { WorkspaceServiceExt } from './workspace-service-ext';
@@ -26,8 +26,6 @@ import {
     StatusBar,
     ShellLayoutRestorer,
     StatusBarAlignment,
-    QuickOpenItem,
-    QuickOpenMode,
     QuickOpenService,
     LabelProvider
 } from '@theia/core/lib/browser';
@@ -74,9 +72,6 @@ export class ArduinoFrontendContribution implements TabBarToolbarContribution, C
     @inject(MonitorService)
     protected readonly monitorService: MonitorService;
 
-    // TODO: make this better!
-    protected connectionId: string | undefined;
-
     @inject(WorkspaceServiceExt)
     protected readonly workspaceServiceExt: WorkspaceServiceExt;
 
@@ -341,65 +336,6 @@ export class ArduinoFrontendContribution implements TabBarToolbarContribution, C
             },
             isToggled: () => ARDUINO_PRO_MODE
         });
-        registry.registerCommand(ArduinoCommands.CONNECT_TODO, {
-            execute: async () => {
-                const { boardsConfig } = this.boardsServiceClient;
-                const { selectedBoard, selectedPort } = boardsConfig;
-                if (!selectedBoard) {
-                    this.messageService.warn('No boards selected.');
-                    return;
-                }
-                const { name } = selectedBoard;
-                if (!selectedPort) {
-                    this.messageService.warn(`No ports selected for board: '${name}'.`);
-                    return;
-                }
-                const attachedBoards = await this.boardsService.getAttachedBoards();
-                const connectedBoard = attachedBoards.boards.filter(AttachedSerialBoard.is).find(board => BoardsConfig.Config.sameAs(boardsConfig, board));
-                if (!connectedBoard) {
-                    this.messageService.warn(`The selected '${name}' board is not connected on ${selectedPort}.`);
-                    return;
-                }
-                if (this.connectionId) {
-                    console.log('>>> Disposing existing monitor connection before establishing a new one...');
-                    const result = await this.monitorService.disconnect(this.connectionId);
-                    if (!result) {
-                        // TODO: better!!!
-                        console.error(`Could not close connection: ${this.connectionId}. Check the backend logs.`);
-                    } else {
-                        console.log(`<<< Disposed ${this.connectionId} connection.`)
-                    }
-                }
-                const { connectionId } = await this.monitorService.connect({ board: selectedBoard, port: selectedPort });
-                this.connectionId = connectionId;
-            }
-        });
-        registry.registerCommand(ArduinoCommands.SEND, {
-            isEnabled: () => !!this.connectionId,
-            execute: async () => {
-                const { monitorService, connectionId } = this;
-                const model = {
-                    onType(lookFor: string, acceptor: (items: QuickOpenItem[]) => void): void {
-                        acceptor([
-                            new QuickOpenItem({
-                                label: "Type your message and press 'Enter' to send it to the board. Escape to cancel.",
-                                run: (mode: QuickOpenMode): boolean => {
-                                    if (mode !== QuickOpenMode.OPEN) {
-                                        return false;
-                                    }
-                                    monitorService.send(connectionId!, lookFor + '\n');
-                                    return true;
-                                }
-                            })
-                        ]);
-                    }
-                };
-                const options = {
-                    placeholder: "Your message. The message will be suffixed with a LF ['\\n'].",
-                };
-                this.quickOpenService.open(model, options);
-            }
-        })
     }
 
     registerMenus(registry: MenuModelRegistry) {
diff --git a/arduino-ide-extension/src/browser/monitor/monitor-connection.ts b/arduino-ide-extension/src/browser/monitor/monitor-connection.ts
index ba0ec3eb..ce08ee33 100644
--- a/arduino-ide-extension/src/browser/monitor/monitor-connection.ts
+++ b/arduino-ide-extension/src/browser/monitor/monitor-connection.ts
@@ -8,34 +8,26 @@ export class MonitorConnection {
     @inject(MonitorService)
     protected readonly monitorService: MonitorService;
 
-    protected _connectionId: string | undefined;
+    connectionId: string | undefined;
 
-    protected _connectionConfig: ConnectionConfig;
+    protected _connectionConfig: ConnectionConfig | undefined;
 
     protected readonly onConnectionChangedEmitter = new Emitter<string | undefined>();
     readonly onConnectionChanged: Event<string | undefined> = this.onConnectionChangedEmitter.event;
 
-    get connectionId(): string | undefined {
-        return this._connectionId;
-    }
-
-    set connectionId(cid: string | undefined) {
-        this._connectionId = cid;
-    }
-
-    get connectionConfig(): ConnectionConfig {
+    get connectionConfig(): ConnectionConfig | undefined {
         return this._connectionConfig;
     }
 
     async connect(config: ConnectionConfig): Promise<string | undefined> {
-        if (this._connectionId) {
+        if (this.connectionId) {
             await this.disconnect();
         }
         const { connectionId } = await this.monitorService.connect(config);
-        this._connectionId = connectionId;
+        this.connectionId = connectionId;
         this._connectionConfig = config;
 
-        this.onConnectionChangedEmitter.fire(this._connectionId);
+        this.onConnectionChangedEmitter.fire(this.connectionId);
 
         return connectionId;
     }
@@ -43,17 +35,18 @@ export class MonitorConnection {
     async disconnect(): Promise<boolean> {
         let result = true;
         const connections = await this.monitorService.getConnectionIds();
-        if (this._connectionId && connections.findIndex(id => id === this._connectionId) >= 0) {
+        if (this.connectionId && connections.findIndex(id => id === this.connectionId) >= 0) {
             console.log('>>> Disposing existing monitor connection before establishing a new one...');
-            result = await this.monitorService.disconnect(this._connectionId);
+            result = await this.monitorService.disconnect(this.connectionId);
             if (!result) {
                 // TODO: better!!!
-                console.error(`Could not close connection: ${this._connectionId}. Check the backend logs.`);
+                console.error(`Could not close connection: ${this.connectionId}. Check the backend logs.`);
             } else {
-                console.log(`<<< Disposed ${this._connectionId} connection.`);
-                this._connectionId = undefined;
+                console.log(`<<< Disposed ${this.connectionId} connection.`);
+                this.connectionId = undefined;
+                this._connectionConfig = undefined;
+                this.onConnectionChangedEmitter.fire(this.connectionId);
             }
-            this.onConnectionChangedEmitter.fire(this._connectionId);
         }
         return result;
     }
diff --git a/arduino-ide-extension/src/browser/monitor/monitor-widget.tsx b/arduino-ide-extension/src/browser/monitor/monitor-widget.tsx
index 501c7ee8..01a20657 100644
--- a/arduino-ide-extension/src/browser/monitor/monitor-widget.tsx
+++ b/arduino-ide-extension/src/browser/monitor/monitor-widget.tsx
@@ -71,12 +71,9 @@ export class SerialMonitorOutput extends React.Component<SerialMonitorOutput.Pro
             fontFamily: 'monospace',
         };
 
-        for (let text of this.props.lines) {
+        for (const text of this.props.lines) {
             result += text;
         }
-        if (result.length === 0) {
-            result = '';
-        }
         return <React.Fragment>
             <div style={style}>{result}</div>
             <div style={{ float: "left", clear: "both" }}
@@ -116,7 +113,7 @@ export class MonitorWidget extends ReactWidget {
 
     protected lines: string[];
     protected tempData: string;
-    protected _baudRate: number;
+    protected baudRate: number;
     protected _lineEnding: string;
 
     constructor(
@@ -168,16 +165,12 @@ export class MonitorWidget extends ReactWidget {
         this.update();
     }
 
-    get baudRate(): number | undefined {
-        return this._baudRate;
-    }
-
     protected onAfterAttach(msg: Message) {
         super.onAfterAttach(msg);
         this.clear();
         this.connect();
         this.toDisposeOnDetach.push(this.boardsServiceClient.onBoardsChanged(async states => {
-            const currentConnectionConfig = this.connection.connectionConfig;
+            const currentConnectionConfig = this.connection.connectionConfig;      
             const connectedBoard = states.newState.boards
                 .filter(AttachedSerialBoard.is)
                 .find(board => {
@@ -296,7 +289,7 @@ export class MonitorWidget extends ReactWidget {
     }
 
     protected readonly onChangeBaudRate = (br: SelectOption) => {
-        this._baudRate = typeof br.value === 'number' ? br.value : 9600;
+        this.baudRate = typeof br.value === 'number' ? br.value : 9600;
     }
 
     protected renderSelectField(id: string, options: OptionsType<SelectOption>, defaultVal: SelectOption, onChange: (v: SelectOption) => void): React.ReactNode {
diff --git a/arduino-ide-extension/src/browser/toolbar/arduino-toolbar-contribution.ts b/arduino-ide-extension/src/browser/toolbar/arduino-toolbar-contribution.ts
index 17c13353..5931f1ec 100644
--- a/arduino-ide-extension/src/browser/toolbar/arduino-toolbar-contribution.ts
+++ b/arduino-ide-extension/src/browser/toolbar/arduino-toolbar-contribution.ts
@@ -6,14 +6,19 @@ import { CommandRegistry } from "@theia/core";
 import { LabelParser } from "@theia/core/lib/browser/label-parser";
 
 export class ArduinoToolbarContainer extends Widget {
-    constructor(protected left: ArduinoToolbar, protected right: ArduinoToolbar) {
+
+    protected toolbars: ArduinoToolbar[];
+
+    constructor(...toolbars: ArduinoToolbar[]) {
         super();
         this.id = 'arduino-toolbar-container';
+        this.toolbars = toolbars;
     }
 
     onAfterAttach(msg: Message) {
-        Widget.attach(this.left, this.node);
-        Widget.attach(this.right, this.node);
+        for (const toolbar of this.toolbars) {
+            Widget.attach(toolbar, this.node);
+        }
     }
 }
 
diff --git a/arduino-ide-extension/src/browser/toolbar/arduino-toolbar.tsx b/arduino-ide-extension/src/browser/toolbar/arduino-toolbar.tsx
index c16af2f0..31b7f113 100644
--- a/arduino-ide-extension/src/browser/toolbar/arduino-toolbar.tsx
+++ b/arduino-ide-extension/src/browser/toolbar/arduino-toolbar.tsx
@@ -45,17 +45,18 @@ export class ArduinoToolbarComponent extends React.Component<ArduinoToolbarCompo
     }
 
     render(): React.ReactNode {
+        const tooltip = <div key='arduino-toolbar-tooltip' className={'arduino-toolbar-tooltip'}>{this.state.tooltip}</div>;
+        const items = [
+            <React.Fragment>
+                {[...this.props.items].map(item => TabBarToolbarItem.is(item) ? this.renderItem(item) : item.render())}
+            </React.Fragment>
+        ]
         if (this.props.side === 'left') {
-            return <React.Fragment>
-                <div key='arduino-toolbar-tooltip' className={'arduino-toolbar-tooltip'}>{this.state.tooltip}</div>
-                {[...this.props.items].map(item => TabBarToolbarItem.is(item) ? this.renderItem(item) : item.render())}
-            </React.Fragment>;
+            items.unshift(tooltip);
         } else {
-            return <React.Fragment>
-                {[...this.props.items].map(item => TabBarToolbarItem.is(item) ? this.renderItem(item) : item.render())}
-                <div key='arduino-toolbar-tooltip' className={'arduino-toolbar-tooltip'}>{this.state.tooltip}</div>
-            </React.Fragment>;
+            items.push(tooltip)
         }
+        return items;
     }
 }
 
@@ -91,8 +92,7 @@ export class ArduinoToolbar extends ReactWidget {
     }
 
     protected init(): void {
-        this.node.classList.add('theia-arduino-toolbar');
-        this.node.classList.add(this.side);
+        this.node.classList.add('theia-arduino-toolbar', this.side);
         this.update();
     }