[sdiy] dsPIC with on-chip audio DACs

[Seb Francis]

These look great.  I feel some digital modules for my modular coming 
on... super-saw oscillator, cloud oscillator, fancy LFOs, digital noise, 
etc..  In fact maybe just make a single design with a rotary switch to 
select which software to load?  - Have to use some fancy colour coded 
labelling for the socket functions with each software (or a little LCD 
screen per socket!)

Shame the ADC isn't quite up to audio spec (max 12-bit resolution).  
Still fine for CV control (up to 10 CV inputs!), and actually probably 
useable for the sort of audio one normally gets within a modular.

I noticed they also do the dsPIC33FJ128GP802 with double program memory, 
if developing something really complex (like a 10-in-1 modular synth 
module for example)

Seb


Eric Brombaugh wrote:
> The dsPIC33FJ64GP802 chips with on-board audio DACs that were 
> discussed on this list a while back have been available for about a 
> month now. These come in 28-pin skinny DIP packages and cost is less 
> than $10/ea in single qty. I bought some a few weeks back and finally 
> got around to trying one out the other day.
>
> After the usual cockpit errors that occur when starting off with a new 
> processor I've gotten some simple audio stuff running. Performance 
> looks (and sounds) generally good. It's possible to get 100kHz sample 
> rates using only the on-chip clock oscillators, so this chip and a few 
> external components can be used to lash-up a fairly capable noise maker.
>
> Recommended!
>
> Eric
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