[sdiy] pedals & midi chords

[David Brown]

I didn't keep any of the emails on this topic and I couldn't figure 
out how to access any recent archive so am just sending a new thread.

I did a bass pedals project which could easily be adapted for any 
switch array and sending bass chords would be an easy 
modification.  The code doesn't do this but it would be quite easy to 
add.  Downside is I used an expensive processor and you have to 
solder your own hardware.  Upside is the development environment is 
free and there is working code written in basic.  I don't have the 
pcb design file posted but can make it available.  The cost for three 
quicks (3 days!) is $51 and the cad software is free.  Link at
http://modularsynthesis.com/pedals/basspedals.htm

I also did an in-series MIDI processor which could also be easily 
adapted to send chords based on specific MIDI keys.  The downside is 
the code is written in assembler and takes a bit more programming 
savvy.  The development environment is modestly priced with an 
in-system programmer available for $30.  The upside is the processor 
used is dirt cheap.  Total cost for all the components to do MIDI key 
to chords would be $10-$15.  The software is posted and 
commented.  This wouldn't take much soldering and I could post the 
design files for the pcb I made.  Link at
http://modularsynthesis.com/processor/processor.htm

I'd be happy to consult or help or possibly even be talked into some 
coding.  It wouldn't be that difficult.  I've even had similar 
thought about those unused keys at either end of my 88 note keyboard.

Dave
http://modularsynthesis.com