That was basically my thought, I'm just worried that if I link to the code online, that someone could claim 'Well I don't have internet'. Bam lawsuit.

I suspect that publishing it public to the internet is sufficient. If you really wanna cover your ass offer to mail someone the source on a CD for "reasonable handling fees"... which can reasonably be fairly high if someone demands such service.

This was changed in GPLv3. To my reading, section 6(b)(2) means that if you're distributing a physical product, you can just include a link to a URL where the source can be downloaded for free.

You could read 6(b) to mean that you have to offer consumers the choice between physical-delivery-at-cost and for-free-download of the source... but I don't think that's the right reading.

Maybe offer the source code at the point of purchase? Could even sell USB/SD with source code on it. Folks who want the code offline can buy them and copy the code where they want it.

OTOH, the internet is a "medium customarily used for software interchange" so maybe that would be fine, but the internet wouldn't "accompany" the device. Also, in GPLv2 you are allowed to just send a note "you can get source from us delivered on a storage device for $X", so if you do the purchase thing, plus write a note with every device about how to get the code on the internet or on disk, you should be fine.