MPA Update

The MPA MIDI Decoder (potentiometer and logic output) hardware is being updated.  The improved design features simplified assembly, smaller footprint and easier-to-read I/O labels.  The new boards will be available in early June.

MIDI Ship Horn / Train Horn Rig

Dana in Pennsylvania combined a car hauler trailer, a 4-cylinder gasoline engine air compressor, a 620 gallon air tank, and an assortment of air horns & whistles.  He then added 24 relays driven by three MSA-T MIDI decoders and a laptop running Anvil Studio.  The result:

Complete project discussion and additional photos can be found here.  Also see the rig’s renditions of “76 Trombones” and “The Pennsylvania Polka“.