Index: sources/canbus/MessageAcknowModel.h
===================================================================
diff -u -rfc329c788fe9453983072bee937ccbc95b4ed6e4 -r922463c555493a51ea20744a95dd62976adaf0f9
--- sources/canbus/MessageAcknowModel.h	(.../MessageAcknowModel.h)	(revision fc329c788fe9453983072bee937ccbc95b4ed6e4)
+++ sources/canbus/MessageAcknowModel.h	(.../MessageAcknowModel.h)	(revision 922463c555493a51ea20744a95dd62976adaf0f9)
@@ -120,10 +120,28 @@
     QThread    *_thread     = nullptr;
     bool        _init       = false;
 
+    const int   _interval   = 1000; // in ms
+    bool        _checkin    = false;
+
+protected:
+    void timerEvent(QTimerEvent *) override {
+        if ( _checkin )
+            emit didCheckIn();
+    }
+
 public slots:
     bool init();
     bool init(QThread &vThread);
 
+    /*!
+     * \brief   doStartCheckIn
+     * \details emits the first check-in signal and sets the check-in flag to start the check-in
+     */
+    void doStartCheckIn() {
+        emit didCheckIn();
+        _checkin = true;
+    }
+
 private slots:
     void quit();
 
@@ -134,6 +152,11 @@
     void quitThread();
 
 signals:
+    /*!
+     * \brief   didCheckIn
+     * \details This signal is emitted on each interval (1s) to notify MessageDispatcher to send a Check-In
+     */
+    void didCheckIn();
 
     /*!
      * \brief   didFramesTransmit