     let r = NSString(format: "%03d", Int(instrumentColor.getRed()))
     let g = NSString(format: "%03d", Int(instrumentColor.getGreen()))
     let b = NSString(format: "%03d", Int(instrumentColor.getBlue()))
-    
     uart("i:\(r).\(g).\(b);")
   }
   func updateEffectColor() {

  }
  
  @IBAction func changeBrightnessMin(sender: UISlider) {
    let val = sender.value
    brightnessLabel.text = "\(val)"
    uart("b:\(val);")
  }

    setReverbWetDry(0)
    setReverbPresets(4)
    
    setBrightnessMin(0.15)
    
    mixer = AVAudioMixerNode()
    
    engine.attachNode(eq)
