This topic has probably come up before but I likely missed it.  I am
wondering if someone can point me to a source for a MIDI decoder board
with triac outputs and expression capability.  There seems to be quite
a few generic MIDI boards out there now but the outputs appear to be
either "on or off" with nothing in between.

Specifically, I'm searching for a type of driver board such as those
used in modern piano player systems that are capable of MIDI-controlled
intensities.  This is for a special experimental project and has
nothing to do with pianos but the expressive output is the same
concept.  This of course would mean some type of pulse modulated
output.

It does not have to have a lot of expression; just a half dozen or so
noticeable levels ranging from low to high is sufficient.  I want the
board to be able to drive 35-45 volt solenoids which means it needs
to be equipped with triacs on the output in order to handle tangible
amperage.  I don't want to use relays as they would be too slow and
intensity control would not be possible.

Finally, the board should be able to be set to run on specific MIDI
channels (1-16 at least), via dip switches or jumpers.  I don't mean to
sound 'picky' but something reasonably affordable would be a real plus.
I'm just a technician and don't have the income of a cardiac surgeon so
this is a very budget-minded project.  Thanks.

Rob Goodale, RPT
Las Vegas, Nevada

 [ Rob later found a promising but expensive circuit board, offered
 [ by Classic Organ Works, for operating organ chimes:
 [ http://www.organworks.com/Web/products/products.asp?productid=75&categoryid=17&category=MIDI%20Works
 [ -- Robbie