Am 07/08/2011 08:30 PM, schrieb Tomek CEDRO: > ps/2: You can make perfect one layer pcb at home using > photolitography (laser printer + standard laser foil + positive 20 + > cleaner + philips halogen bulb type 14552 12V/75W only requires 1 > minute to create perfect mask). Still I don't know any sensible method > to make drills metalization at home to produce advanced two layer > pcb... maybe you guys know some tricks? :- Simply drill the holes and solder both sides - with a thin wire if there is no THT pin. This may be a bit painful, but works quite well if you take care during layout so that you do not place vias under parts.
BTW: I found that PCB material that comes pre-coated with the photo mask works *way* better than positive-20, because you get consistent exposure times. Also, positive-20 tends to get bad shortly after the "best before" date, which was about a year when I used the stuff, while the pre-coated material can be stored a lot longer. cu Michael _______________________________________________ Openocd-development mailing list [email protected] https://lists.berlios.de/mailman/listinfo/openocd-development
