more ATUSB ?

Felix sucotronic at gmail.com
Wed Apr 30 02:21:42 EDT 2014


Don't call me pessimist, but I think nobody will be interested :(


On Wed, Apr 30, 2014 at 12:17 AM, Werner Almesberger <werner at almesberger.net
> wrote:

> I asked Christoph Pulster and he confirmed that he sold his last
> ATUSB and only has a few ATBEN left. I also asked him if he would
> like to make more but he doesn't want to get into production.
>
> So, does anyone else feel adventurous and would be interested on
> doing this ? All the components should still be available. Maybe
> the manufacturing company that made the PCBAs (PCBA = PCB +
> components + SMT) is still around and has the old films and
> stencils somewhere, in which case there could be a slight discount.
>
> If I got the numbers right, then making the 120 ATUSB PCBAs cost
> about EUR 2510 in 2011. To this add the labour cost of flashing,
> testing, and sales. Of these 120 boards, three had problems
> revealed by production testing. One of these was a soldering flaw,
> one was a missing resistor, and the third an incorrectly placed
> chip.
>
> Details on the boards that failed testing are here:
> http://lists.en.qi-hardware.com/pipermail/discussion/2011-June/008362.html
>
> The production process is roughly as follows:
>
> 1) prepare design files. This can be a reuse of the fab packages
>    from 2011:
>
> http://downloads.qi-hardware.com/people/werner/wpan/fab/atben-pcb-110330.zip
>
> http://downloads.qi-hardware.com/people/werner/wpan/fab/atben-smt-110330.zip
>
> 2) order the components. Do this before committing to anything
>    else.
>
> 3) get PCBs made
>
> 4) get components SMT'ed
>
> In the case of the boards made by Tuxbrain, the manufacturing
> company did steps 2-4 for him.
>
> 5) separate individual boards from panel
>
> 6) flash the firmware and run the production tests. See
>    http://downloads.qi-hardware.com/people/werner/wpan/prod/
>
> 7) sell 'em.
>
> For testing, you need a known to be good set of ATUSB and ATBEN
> boards since some of the parameters of the test setup depend on
> the physical arrangement at your site and therefore have to be
> determined there. You also need a Ben, a Linux PC, and a
> programming adapter.
>
> The programming adapter looks like this, though one could make a
> slightly nicer one:
>
> http://downloads.qi-hardware.com/people/werner/wpan/tmp/atusb-pgm-20110203.jpg
>
> - Werner
>
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-- 
Felix
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