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Originally Posted by sfx1999
Did you know you can make PC boards with photo paper and a laser printer? Well, I mean you will still need etchant and the copper clad. You can make the etchant work better with a fish tank heater. You don't want to use something that gets really hot, though. You can also you an air pump from a fishtank to accelerate it.
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yep, I know, but I thought this project is still small enough to be soldered manually. i'm thinking about some improvements for the setup already, I guess then I'll do it that way. or go to some shop to make me a double layer board
btw: the status from yesterday : mmc card is running, only the actual amplifiers are left to test, all digital stuff is working fine
http://johannes.lampel.net/projects/...ekgplatine.jpg 