private void slider_SolderStepper2_Current_ValueChanged(object sender, RoutedPropertyChangedEventArgs <double> e)
        {
            if (ConfigLoaded)
            {
                byte newvalue = System.Convert.ToByte(slider_SolderStepper2_Current.Value);
                usbController.setSolderStepper2Current(newvalue);

                lbl_SolderStepper2_Current.Content = calculateCurrent_mA(newvalue).ToString("0.00 A");
            }
        }