Aerophone MidiBeam II

I finally got around to adding the MidiBeam module to my Aerophone. I had to open the case and make a power supply for the MidiBeam module, and while I had it apart, I mounted a voltage display permanently in the casing.

The power supply comes out through a small hole in the casing
The module is velcroed to the neck, and the USB cable is velcroed out of the way
The power for the MidiBeam is switched near the USB port
The voltage display is permanently mounted in the casing
The voltage display only works when I push the button