hand routing a PCB must have been quite a skill back then
funny how people now use space age cad software to make basically simple widgets on 3D printers, or plastic green yodas
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mostly yodas
It was quite the skill, you can always tell a hand routed board because the traces are all rounded. I just tossed a boatload of early hand-route boards, and some of those things were incredibly complex.
those mainframe boards were something else, 2 foot square with hundreds of TTL
I'm not planning on anything bigger than a Eurocard
My stuff tends to be 51 x 77mm. That's a personal standard that most of my (rather simple) equipment rides on. I like to create small boards that do one thing that I can chain together.
Of course, if I was doing something commercial, I'd use whatever they were requiring.
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