On 4/24/14, 3:43 PM, "rh_" <richard_hubb...@lavabit.com> wrote:
>On Thu, 24 Apr 2014 14:06:17 -0700 >John Syn <john3...@gmail.com> wrote: > >> >> On 4/24/14, 12:55 PM, "rh_" >> <richard_hubb...@lavabit.com> wrote: >> >> >On Thu, 24 Apr 2014 10:51:59 -0700 (PDT) >> >maesi...@gmail.com wrote: >> > >> >--8<-- >> > >> >> Currently my small company produces simple Arduino PCBs and the >> >> producing process is just to send the Gerber file with the BOM and >> >> we are ready to go. After I saw Gerald Coley speaking saying >> >> this:https://www.youtube.com/watch?v=oZ0OPT5s9aQ I'm wondering what >> >> else I need to know in order to have a 500 units order working. Is >> >> the trick in the evaluation quality test? or is it that I have to >> >> flash some of the EEPROM, eMMC,uSD in a special way? >> > >> >You should contact your PCB maker. Send them the Gerber and the BOM. >> >Then sit down when they send you the quote, or at least hold on to >> >something. I think the BBB is a 6-layer board and some cannot do >> >them. >> The biggest problem is the 2.9mil spacing between traces and pads of >> the eMMC part. This will make the board very expansive. > >So seems like a list is in order. Things that make it hard to make your >own BBB > >1) 2.9mil spacing between traces and pads for the eMMC part > >2) BBB is 6-layer board and some PCB makers cannot do 6-layer boards > >3) That is what is so amazing about what Gerald has achieved. Manufacturing a high tech board and not charging high tech prices. High tech is generally considered trace and spacing less than 5mils. From what I recall, there is a way to fix the pcb to achieve 3.2mil trace and space and I think that you can get back to 5mil trace and space if you remove the eMMC. Don¹t hold me to this as I worked on this almost a year ago. BTW, 6 layer is no big deal for most companies. Regards, John > > > > >-- >For more options, visit http://beagleboard.org/discuss >--- >You received this message because you are subscribed to the Google Groups >"BeagleBoard" group. >To unsubscribe from this group and stop receiving emails from it, send an >email to beagleboard+unsubscr...@googlegroups.com. >For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
