};
minValue = new SimpleDoubleProperty(this, "minValue", 0);
maxValue = new SimpleDoubleProperty(this, "maxValue", 100);
lastTimerCall = System.nanoTime();
animationDuration = 800;
timer = new AnimationTimer() {
@Override public void handle(final long NOW) {
if (NOW > lastTimerCall + LED_BLINK_INTERVAL) {
setLedOn(!isLedOn());
lastTimerCall = NOW;
}