i'm not aware of anyone using schmitt chips, but according to ryan
they should have fairly stable tuning if you use decoupling caps on
the power supply. i would definitely try it out if i were you as it
would be much less work to assemble, troubleshoot, and fit in the case
than the bank of 555s. if you do try it out, be sure to let us know
the results.

--- In tr-707@yahoogroups.com , "thom uliasz" <dsl_tru@...> wrote:
>
> Oh, you've called me outta my lurking with this subject..
> I love the idea of multiple sample banks in the 707!
> Id thought that the roms could not be read easily, and the data
would come
> out scrambled
> Not an issue anymore
> Id defintiely offer whatever sounds i could, ive got a few univox drum
> boxes. .analog - so no rom dumps. I could also offer a large
assortment of
> toy kit samples, sliced up break beats ans other useful samples.
>
> Has anyone gotten any conclusive pitch mod results using Schmitt
triggers
> Im just about ready to start the pitch mod in my 707, so alittle
guidance
> from the wise would be appreciated.
>
> And finally - does anyone have a schematic for the 626 Id like to
attempt
> the pitch/decay/input mods on mine. - Check out my 626 bending page
while
> your at it (third post down):
> http://burnkit2600.com/gear/
> -Thom
>