Re: gEDA-user: B9A pin base

[DJ Delorie <dj@xxxxxxxxxxx>]

> How to put tube on a PCB (software, not the real board), anyway?

Tubes aren't special - you create a footprint using vias such that you
have plated holes wherever the tube's socket needs them (you normally
wouldn't solder the tube itself in).  In the case of spade-type pins,
you'd use the width of the spade pin as the diameter of the drill
(plus a few thou for clearance).

(see http://cgi.ebay.com.my/ws/eBayISAPI.dll?ViewItem&item=350093246441)

I think the only tricky part is figuring out *where* the nine holes
go, without a PDF spec for the socket.  It looks like there's ten
evenly spaced slots, so every 36 degrees?  Might want to write a perl
script to generate the footprint, using math to figure the
coordinates.  The eBay listing above says 13/16 inch diameter for that
tube, for example.


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