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Re: F.cu connections to pins soldered on B.Cu

 

In industry holes are plated with copper ("plated through holes").? This is not something you can easily do yourself at home, instead you can just solder both sides where possible, or use a via (small hole moving a trace from one side to the other) with a bit of wire or micro rivet.

On Wed, Aug 1, 2018 at 1:02 PM, Vagulus <rick@...> wrote:
My project involved several proprietary breakouts attached to a main PCB.? They are physically mounted on the top of the board and the pins are? soldered on the B.Cu layer (as I believe is normal).? That's where I get lost!?

One of the proprietary breakouts is the Arduino Pro Mini - the brains of the operation - which has a footprint like this

Assume I have a two-layer PCB:? most of the pins of the Pro Mini are connected to traces on B.Cu but some must connect to traces on F.Cu.? As illustrated, this footprint is just a collection of standard pads.? How do they connect through the fibreglass of the board?

I guess this is a silly question to those of you in the know, but it has me stumped.? I cannot find anything on the Net or in any literature which explains this mystery.? I hope one or more of you can help.

Thanks


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