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Subject: Re: Custom MIDI controlled NJM2069 Project

From: ultragalore@...
Date: 2014-09-14

I understand you want to use the stuff you have lying around but I thought I'd just send you this board because its a small, fast, cheap and easy to develop stuff like this on.

I can imagine you can generate the ADSR on the Teensy too, like they did on a similar IC, the Microchip PIC here:
Voltage Controlled ADSR Envelope Generator (VC ADSR 7B)

 



Maybe a few IC's which can help you interface other logic to the MPA board you have (or maybe it's on there I don't know):

The ULN2003/ULN2008
darlington arrays which you can connect motors/actuators/relays on (maybe you need to trigger a sound that way)

or HC4066 quad analog switch

image-Google around for them and see what people use it for.

Sorry it's a bit fragmented tips but maybe it will you get inspired so you can solve a piece of the puzzle you're looking at.