Hi - Yes... no point burning money and time on paste masks and assembly company if the boards are unworkable for some reason. (And there's plenty of ways to get things wrong, although I took a lot of care it's a lot all at once from zero.) Obviously for production a pick-and-place line would do them, for practical, aesthetic, and reliability reasons.
The only items I know are challenging soldering-wise are the hdmi connectors, other connectors might be problematic with inaccessible smt pads (didn't get a chance to physically see them yet) but there can be workarounds for that. The rest of the soldering is just 'normal'. -Andy David Long <[email protected]> wrote: >On 12/18/12 23:04, Andy Green wrote: >> On 13/12/12 18:05, the mail apparently from Andy Green included: >>> On 07/12/12 11:59, the mail apparently from Andy Green included: >>>> On 05/12/12 13:51, the mail apparently from Andy Green included: >>>>> Hi - >>>>> >>>>> Here's a draft specification for some small, cheap hardware >devices >>>>> would be useful in Lava to solve many interesting test scenarios >that >>>>> can't be done without some small hardware assist. >>>>> >>>>> I have some time to prototype these devices and scenario boards in >the >>>>> next couple of weeks, but before starting I would like to get >feedback >>>>> on the specification, particularly anything dumb ^^ or other >>>>> interesting >>>>> tests that are not mentioned that are compatible with the basic >>>>> approach >>>>> and could be piled on if thought about from the start. >>>>> >>>>> Also, what is the status of the SD Mux thing currently? If it's >>>>> moribund I can look at that too; if not, great. >>>> >>>> After offlist feedback here's v0.2, changelog >>>> >>>> - SD Mux >>>> >>>> - mounting considerations >>>> >>>> - clarify multi connector set boards only have one connector set >>>> fitted on a given board and set the SCEN bus accordingly >>> >>> I have now completed laying out four PCBs, you can find updated docs >and >>> the schematics / PCB layouts here >>> >>> https://wiki.linaro.org/People/AndyGreen/Lava-lmp >>> >>> ... any feedback appreciated. >> >> Update on status... >> >> - I changed the micro SD header to a 70mm custom flat cable >> >> - that and 2 x the four PCBs are being fabricated in Taiwan and >> should be with me next week >> >> - I updated the wiki link above with the gerbers and drill data used > >> for these prototype boards >> >> - All the parts needed are in stock at Farnell / Newark / Element 14 > >> and were ordered last week: they should also be with me next week. >> >So you're doing the PCB assembly yourself? > >-dl
_______________________________________________ linaro-validation mailing list [email protected] http://lists.linaro.org/mailman/listinfo/linaro-validation
