Added data logger (again)

main.qml

@@ -38,6 +38,7 @@ Window {
 
             ComboBox {
                 id: cbNUC;
+                height: 60;
                 model: ["NUC1", "NUC2", "NUC3", "NUC4", "NUC5"];
                 onCurrentIndexChanged: {
                     chart.reset();
@@ -47,23 +48,36 @@ Window {
             Button {
                 id: btnTrigger;
                 text: "Start";
+                height: 60;
+
                 onClicked: {
                     if (mgmt.trigger()) {
                         // running
                         btnTrigger.text = "Stop";
+                        cbLogToDisk.enabled = false;
                     } else {
                         btnTrigger.text = "Start";
+                        cbLogToDisk.enabled = true;
                     }
                 }
             }
 
             Button {
-                text: "Reset"
+                text: "Reset";
+                height: 60;
+
                 onClicked: {
                     chart.reset();
                     chart.update();
                 }
             }
+
+            CheckBox {
+                id: cbLogToDisk;
+                text: "Log";
+                onClicked: mgmt.logToDisk = checked
+            }
+
         }
 
         Row {