UmTRXv2 final project

Alexander Chemeris alexander.chemeris at gmail.com
Mon Jul 2 23:10:54 UTC 2012


Hi Jean-Samuel,

Thank you for the update! Andrey and I have just arrived back to Moscow,
hopefully he will be able to answer tomorrow.

Few questions from me:

1. Have they started PCB manufacturing already? With 3w of manufacturing
time it would be better to start manufacturing asap.

2. Have you contacted Lime to get more LMS chips?

Sent from my Android device.

--
Regards,
Alexander Chemeris
CEO, Fairwaves LLC
http://fairwaves.ru
02.07.2012 22:16 пользователь "Jean-Samuel Najnudel - BJT PARTNERS SARL" <
jsn at bjtpartners.com> написал:

> Hi Andrey,
>
> I have some news from the fab today and I have a meeting with them
> tomorrow morning.
>
> They sent me the BOM with components price list. This bring me a few
> questions.
>
> 1/ Would you know a distributor for the Murata chokes ? The fab them to
> have some issue to source these.
>
> 2/ Would you suggest a distributor for the GPS chip ?
>
> 3/ The CY7C1460AV33-167AXI costs more than 50 Euros on the list ! I know
> SRAM is expensive but would you know where we could purchase this component
> at a lower price ? If not, do you think we could use a cheaper but
> equivalent SRAM chip ?
>
> 4/ The M25P64-VMF6 costs more than 20 Euros on the list ! This is huge for
> a 64M flash. Would you know where we could purchase this component at a
> lower price ? If not, do you think we could use a cheaper but equivalent
> flash chip ?
>
> Please let me know about this. This would help me a lot to move forward to
> the next sample production step.
>
> Thanks a lot for your help.
>
> Best regards.
>
> Jean-Samuel.
> :-)
>
>
> On Mon, Jun 18, 2012 at 11:19 AM, Jean-Samuel Najnudel - BJT PARTNERS SARL
> <jsn at bjtpartners.com> wrote:
>
>> Hi Andrey,
>>
>> I sent the files last week. The fab needs a few days to update its
>> pricing and launch the production process.
>> Anyway, I just called them today. Work is in progress. They will provide
>> me with some updates later this week. They confirm this should not take too
>> much time for production and they will anyway contact me if they need
>> anything.
>> I will let you know asap.
>>
>> Best regards.
>>
>> Jean-Samuel.
>> :-)
>>
>>
>>
>> On Mon, Jun 18, 2012 at 9:49 AM, Andrey Sviyazov <andreysviyaz at gmail.com>wrote:
>>
>>> Hi Jean-Samuel.
>>>
>>> Took another week, but still no news from you.
>>> Could you please inform us about the progress in the production of
>>> prototypes.
>>>
>>> Best regards,
>>> Andrey Sviyazov.
>>>
>>>
>>>
>>> 2012/6/13 Andrey Sviyazov <andreysviyaz at gmail.com>
>>>
>>>> Hi Jean-Samuel.
>>>>
>>>> Please inform us about fabrication progress even there are no issues.
>>>>
>>>> Best regards,
>>>> Andrey Sviyazov.
>>>> (Sent from my mobile client)
>>>> 12.06.2012 4:48 пользователь "Andrey Sviyazov" <andreysviyaz at gmail.com>
>>>> написал:
>>>>
>>>>  Here PcbDoc file @ 12/06/2012 .
>>>>> So, it all done :)
>>>>>
>>>>> Best regards,
>>>>> Andrey Sviyazov.
>>>>>
>>>>>
>>>>>
>>>>> 2012/6/12 Andrey Sviyazov <andreysviyaz at gmail.com>
>>>>>
>>>>>> Hi all!
>>>>>>
>>>>>> Here final project UmTRXv2 @ 12/06/2012 (PcbDoc file will be attached
>>>>>> to the next e-mail).
>>>>>> I found an mistake with non-SMD LED's positions in compare to Ettus
>>>>>> where A-B in left-to-right orientation (see picture).
>>>>>> Andrew Karpenkov suggested me to change it because of it is not yet
>>>>>> standard but people accustomed to this.
>>>>>> It is done.
>>>>>>
>>>>>> Also he suggest me to make four test points for RXOUT legs of LMS
>>>>>> because he work with this now and found it helpfull.
>>>>>> It is done.
>>>>>>
>>>>>> Also test points which without connector now referenced as TST and
>>>>>> therefore RefDes of some connectors changed.
>>>>>>
>>>>>> Jean-Samuel, please find Gerber files, NC drill and layer stack
>>>>>> desription files which usually required to produce PCB.
>>>>>>
>>>>>> Best regards,
>>>>>> Andrey Sviyazov.
>>>>>>
>>>>>>
>>>>>>
>>>>>> 2012/6/10 Andrey Sviyazov <andreysviyaz at gmail.com>
>>>>>>
>>>>>>> Hi all!
>>>>>>>
>>>>>>> Here final project UmTRXv2 @ 10/06/2012 (PcbDoc file will be
>>>>>>> attached to the next e-mail).
>>>>>>> Jean-Samuel, please check SMD LED's placed at the front edge of the
>>>>>>> PCB.
>>>>>>> If you agree with this variant then I'll generate Gerber files vs
>>>>>>> required layers and description to produce PCB.
>>>>>>> If anybody find any mistake, please inform me immediatelly.
>>>>>>>
>>>>>>> Best regards,
>>>>>>> Andrey Sviyazov.
>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>
>>
>
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