[Mezzanine] Sensors board Rev B - call for review (v2)

Grant Likely grant.likely at linaro.org
Wed Oct 28 06:19:33 UTC 2015


On Wed, Oct 28, 2015 at 11:56 AM, David Mandala
<david.mandala at linaro.org> wrote:
> On 10/27/15 9:26 PM, Grant Likely wrote:
>>
>> On Wed, Oct 28, 2015 at 6:06 AM, David Mandala <david.mandala at linaro.org>
>> wrote:
>>>
>>> On 10/27/15 1:25 PM, Grant Likely wrote:
>>>>
>>>>
>>>> Second posting. I've made some changes to the design. Things to note:
>>>> - VIO is selectable between 3.3V and 5V with a slider switch
>>>> - A through-hole stackable header is used
>>>> - silkscreen is cleaner
>>>>
>>>> I think that covers all the outstanding comments. Attached are the
>>>> schematic, design files, and a rendering.
>>>>
>>>> Comments welcome. I hope to send this for a pre-production run next
>>>> week.
>>>>
>>>> g.
>>>>
>>>> Inline image 1
>>>
>>>
>>> Grant,
>>>
>>> This looks very nice, so +1 from me.
>>>
>>> Do you have a mechanical layout with measurements for each connector? If
>>> so
>>> I can get started on the Case additions for this now.
>>
>>
>> Look a the Sensors-layout.pdf file that I sent you. All of the
>> information you need should be there.
>>
>> g.
>>
> Grant,
>
> Whoops I missed that.
>
> That is most of what I need but P2, P3, P4, P5 are missing Y coordinates,
> 96B_SPI, P6, SW1 are missing x and y info.

Try the attached file.

>
> I'm guessing that 96B_SPI GPIO2 and I2C0 are 7mm apart from the row above
> but it's not called out.  If so that takes care of the y for them, but still

Correct

> need the X for 96B_SPI it's smaller then the connectors above it.

Done

>
> I am assuming that:
> A0,                             D7
> A1,                             D6
> A2,     A6,     I2C1 top        D5
> AT-I2C  GPIO3   I2C1 bottom     D4
> respectively share the same Y offsets.

Yes

> I am also assuming that AT-I2C, GPIO1, I2C0 and D3 y offset is 0 the front
> edge of the board.

Nominally, yes. No guarantees though.

g.
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