NEEDED - Trigger to MIDI - Circuit Schematics or Module

[Alexandra]

Trigger to MIDI Interface - Circuit Schematics or Module for MIDI Marimba that I am building.

what ever I build or buy needs to handle 5 octaves or 64 notes capacity.
I suppose midi notes #33 t0 #99.

I am looking for a device or circuit that can interface between a MIDI Marimba, that I am building with touch and velocity sensitive Triggers, and a sound modual.

PLEASE: No drum triggers. I need something polyphonic, velocity and pressure sensitive, and has a wide note range of 64 note minimum span.

I am willing to build the circuit board from scratch if need be but prefer one already built.

[cappy2112]

[Alexandra]

Thanks Cappy, Good suggestions. you were on the right track.
The website http://timara.con.oberlin.edu/~jtalbert/MTrig/mtrig.htm was more like what I am seeking.

what ever I build or buy needs to handle 5 octaves or 64 note capacity.
I suppose midi notes #33 to #99.