ferdimh@gmx.de wrote:
On 7 Feb., 03:19, Mike Willegal <m...@willegal.net> wrote:I've made my own Apple II cards from ordinary double sided PCB stock. It was easier than I first thought it might be. I haven't bothered with a bread or proto boards since learning to etch my own PCBs.Could you please tell me how? I'm still looking for simple solution to make permanent boards.
I use the laser printer method.Here is one site with decent instructions, but there are a bunch more sites out there with good ideas.
http://www.fullnet.com/~tomg/gooteepc.htmFor two sided boards make sure you create a matching set of alignment marks on opposite corners on both sides of the board. Iron on one side, drill registration holes and then iron on the second side using the holes for alignment. Hold board up to a strong light to check for good alignment. Then you etch both sides at once. The alignment holes are plainly visible on upper left and lower right of my firmware board.
Regards, Mike Willegal
Can anyone suggest something more elegant?I use prototype cards for the PC's ISA bus and remove part of the connector (ISA has a 62 pin connector which is constructed the same way) The boards I have are too high to fit into the case. I wouldn't bother because when I'm testing a prototype I don't close my Apple anyway. --- Ferdinand