Homebrew PCBs

It's not neccessary a carbon (monoxide), which can trigger the CO 
sensor. They are cross-sensitive to hydrogen, which is intensively 
produced by chemical reactions with etching. The CO sensor has filters, 
which increase the selectivity, but they may get aged which makes whole 
sensor more sensitive to e.g. hydrogen.

Marko

Herbert E. Plett pravi:
>
> No part of a PCB manufacturing contains carbon, so it's
> unlikely that CO can be produced other than by burning
> something.
> The only burning you mention are the furnace and the car.
> Check them. A remote chance is that some hidden electrical
> conductor might be 'almost' burning it's duct... fire
> hazard! although I believe it would produce more Cl than
> CO.
>
> --- Stefan Trethan <stefan_trethan@... 
> <mailto:stefan_trethan%40gmx.at>> wrote:
>
> > This happens when you use way too high concentrations of
> > HCl or both.
> > If the CuCl etchant is maintained at normal levels, and
> > covered when
> > not in use, there is no corrosion on steel nearby.
> >
> > It's well worth mentioning, so that others may avoid the
> > tedious work
> > of removing rust, but i doubt it would do damage to a CO
> > detector
> > which likely isn't even in the same room.
> >
> > ST
> >
> > On Jan 23, 2008 11:03 PM, <kevinmwolf@... 
> <mailto:kevinmwolf%40aol.com>> wrote:
> > >
> > > Ed,
> > >
> > > I have experienced some weird situations when using
> > Muriatic acid and hydrogen peroxide to etch. The first
> > couple of times I etched, EVERYTHING metal in the room
> > that I used oxidized over the next couple of days. So
> > yes, there is a small chance that etching can damage
> > nearby electronics. However, I would call your local FD
> > (non-emergency #) and have them check the house for CO
> > levels.
> > >
> > > Best of luck,
> > > -Kevin Wolf
> > >
>
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