ECU7 EFI project plans

[Tony Bryant]

Date sent:      	Tue, 04 May 1999 07:24:21 -0400
From:           	Frederic Breitwieser <frederic at xephic.dynip.com>
Organization:   	Xephic Technology
To:             	diy_efi at efi332.eng.ohio-state.edu
Subject:        	Re: ECU7 EFI project plans
Send reply to:  	diy_efi at efi332.eng.ohio-state.edu

> > Unfortunately, it is expensive to have a small quantity of PC boards made
> > (close to $500), so I've been unable to move ahead until I can either find
> 
> If your design calls for a single sided or double sided PC board, there is a
> product I saw at a tradeshow a year or two ago that you can plot your board using
> a special tonor to contact paper, then rub the pcboard onto the copper clad
> board, then etch.
> 
> I'll see if I can find the brochure and get more information... I had saved it
> because it would facilitate my being able to make one-offs.  Since you posted the
> pcboard routes on the ftp site... it might be a cheesy way of one making their
> own boards.
> 

I've had good luck using photo etching, from laser prints onto 
transparency. Just did a double-sided board with a .65mm spacing 
QFP on it. Turned out pretty good. Takes a fair bit of practice and 
experimentation to get it right.