[sdiy] Mirage Keyboard

[Tom Wiltshire]

Dave,

It's supposed to have 8 x CEM 3328's in it for a start, so definitely  
go for it. CEM3328 is a lowpass-only version of the CEM3320, in much  
the same way that the SSM2044 is a lowpass-only SSM2040, I think.

The keyboard is a basic five-octave velocity sensitive affair from  
the era of microprocessors, so you can expect changeover contacts  
arranged in a scannable matrix. This is DIYable, as long as you're  
willing/able to programme a chip to do the scanning for you and  
output a control voltage (or two or three...velocity?).

It's pretty old, though, and I've no idea how reliable the keyboards  
on Ensoniq stuff are supposed to be.

Hope this helps,
Regards,
Tom



On 28 Jun 2007, at 16:42, David Holt wrote:

> I've got the chance to pick up a non-working Mirage for nearly  
> nothing.  I know it's got some chips of interest in it (CEMs?), but  
> what I'd really be interested in at this point is the actual  
> keyboard mechanism and it's suitibility as a DIY CV keyboard.  I  
> would be using Ray Wilson's PCB for the project and just  
> repackaging the whole thing.  Any help is appreciated.
>
> -dave
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