[sdiy] Mirror PCB. Was: First the Queen, now Harry...

[Dave Krooshof]

>Turns out that Mark had
>etched the PCB as a mirror image of what it should have been.
>Instead of trashing it, he simply bent
>the legs of the ICs upwards and soldered in the chips up-side-down.

As I have a hard time thinking of circuits in mirror images,
I started soldering the stuff on top of the bords I make.
It's possible to overlook the circuit in one go, instead
of flipping the thing over and over and try to render the
schematic in my wetware. If you catch my drift.

It's easy to solder on top and it saves the drilling too.
So if you make the mistake of mirroring the board,
why not making a hybrid: have the IC's on one
side and the rest on the other?

>Now I'm faced with a puzzling psychological quandary: if the
>board is functionally identical in mirror image, why did I choose
>to lay it out one way and not the other?
No _that_ is a question. Gain knowledge in one specific art
and you will get in depth insights in others.

DAve
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