> I bought a tube of QT110s a while back. These are very smart
> little chips and
> they're used in lots of proximity detectors.
>
> See http://www.qprox.com/
>
> I'm happy to sell a few for what I paid (if I find the
> receipt!) if anyone
> wants a play.
I can see another Ian Bird PCB already in the etchant!
James H
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