I've gotten the Saw DC wave output to work, but the Square wave output
still isn't.
I connected the PWM to a front panel jack. Did you mean the SQ wave
doesn't work when there's nothing modulating the PWM input? Or that
it has to be connected to the front panel?
Cole
still isn't.
I connected the PWM to a front panel jack. Did you mean the SQ wave
doesn't work when there's nothing modulating the PWM input? Or that
it has to be connected to the front panel?
Cole
--- In cgs_synth@yahoogroups.com, sasami@... wrote:
>
> 1) Use a different VCO output. The square wave likes the PWM input to be
> connected.
>
> 2) Sweep the tune knob, and if you still don't hear anything , try
adjusting
> the SPAN and ZERO trimmers. This VCO can quite happily work well
above the
> hearing range if these are wrong.
>
> Ken
>
>
> >Hello everyone,
> >
> >I've build a small system, only the bare minimum to make music, so far.
> >
> >I have the following modules built:
> >Oakley Basic VCA
> >Music From Outer Space Lowpass Filter
> >Music From Outer Space Envelope Generator
> >CGS VCO
> >
> >I hooked everything up today, but there's no noise coming out. This
> >is how I've it patched:
> >VCO -> Filter -> VCA
> >and
> >EG -> VCA
> >
> >I'm thinking there's a problem with the VCO. I've only wired three
> >things: 1V/Oct input, tune knob, and square wave output. I tried
> >hooking this straight into my keyboard amp, but did not get any sound.
> >
> >Also, I have no idea if the EG or Filter are working. Is there anyway
> >to test them without a VCO?
> >
> >The VCA seems to be working. I connected my guitar to it, and the
> >gain knob DID change the volume, so that's good.
> >
> >Where should I start troubleshooting?
> >
> >Also, when I was first starting up the system with the VCO in place, I
> >was testing to see if it was getting the correct voltages from the
> >power supply. It was, but, when I was probing it with my multimeter,
> >I accidentally touched the bracket that the PCB is connected to. This
> >created a small spark... Could I have shorted the circuit, making it
> >unusable?
> >
> >Any help would be wonderful. This is very discouraging.
> >
> >Thanks,
> >Cole
> >
> >
> >
> >
> >The CGS Modular Synth home page: http://www.cgs.synth.net/
> >
> >Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> _______________________________________________________________________
> Ken Stone sasami@...
> Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
> Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
>