Q re. MIDI2CV8

[Daniel Gendreu]

>	Unfortunately I had a nasty crash and lost some old mails regarding the
>MIDI2CV8. Basically, someone was mentioning that the converters can be
>upgraded. Has anyone successfully done this? What are the changes to the
>circuit?

I have not done it yet, but it should be fairly straight forward.
It is a standard part made by several companies in  different qualities.

>	I'm about to start building the core of my modular, and am looking for a
>versatile converter like the M2CV8 (lotsa outputs, reasonable $$$ for my
>poor pocketbook) but would like to notch that little extra performance from
>it if I can.

If you are interested, I have worked out a scheme using the M2CV8 kit which
can double the number of outputs. It requires a custom EPROM and you
cannot use the V/Hz option.

It basically involves building another set of 8 opamp/transistor output buffers.
The opamps are driven directly by 8 TTL outputs from the 8031 chip.

The result, 8CV outputs and 8 Gate outputs! :)

I have not actually done this mod yet as I have no PCB creation tools yet,
but the design is sound and I have no problem rewriting the firmware
and releasing it free to everyone.

Let me know if anyone is interested.
-Dan G.