[sdiy] First DIY synth

[Ingo Debus]

Passive Matrix wrote:
> 
> I wanted to build a bear bones system for more of a learning experience then
> anything else.  I planed to build the VCO and ADSR from simple circuts I
> found based around 555 timer chips and I was going to use CEM chips for any
> or all of the VCA,VCF and LFO (if I included one).

Huh? VCO with 555, but LFO with CEM chip?

> I would use batterys in lue of a powersupply.

If you do so, use a VCO that is unsensitive to power supply voltage. Or
you'll have to re-tune all the time when the battery goes weak...

Ingo