[sdiy] The Korg MS-20 VCO core is oscillating!

[David G. Dixon]

> > Glad you got it working!
> >
> > Someone told me that they proof read with the paper upside 
> down. I've 
> > never bothered trying it, but I wonder if tracing a 
> breadboard rotated 
> > 180 degrees would help to avoid "seeing" the expected.
> 
> I've found that proof-reading it alongside the schematic is 
> really useful. Following every single trace and every single 
> component. You almost end up verifying that the resistors is 
> oriented correctly that way...

That's where my little Excel-based layout tool is really helpful, for both
breadboards and handmade PCB.  I actually make very few layout mistakes now.
When you have to be personally responsible for every trace and every pad,
you get a very clear sense of the circuit and how it works as well.