[OpenTRV-dev] Current rough to-do list top

[Bruno Girin]

Damon,

That's fine. I have a DD1 PCB. I'll check Bo's PDF to see if I have enough
info in there. What I suggest we do then is that I create the box as per
the dimensions in the PDF and as soon as we have a real PCB, we do a test
print. As you saw last time, it is really easy to iterate if we need to
change something.

The one thing I may not be able to work out from the PDF is the variation
between versions (e.g. USB vs batteries) but I can still start and we can
validate the design once we have the first PCB.

In this case, when would be a good deadline for you to have a first
version? Bearing in mind that I have lots of evening events this week, I
may struggle to have anything ready before the weekend: would that work?

Bruno



On 20 October 2013 20:47, Damon Hart-Davis <EMAIL ADDRESS HIDDEN> wrote:

> Hi Bruno,
>
> (Mark: could you help manage the detailed logistics of this box + PCB
> mechanicals/fab part?)
>
> We can't put one of the real new REV1 PCBs in your hands for at least 3
> weeks.  And there will be the Bo and PMS variants which will probably be
> slightly different in various parameters unless we are super-careful.
>
> We do need to try to have the box as near ready as possible by the time we
> do have the PCBs so that we can assemble complete units without delay.
>
> However, if Bo can confirm that the REV1 size, shape and mounting-hole
> locations are exactly as per DD1, then I think you may already have one of
> those (or I can give you one).
>
> We can probably assume for now that component height on the SMD side is no
> worse than the DD1 populated board too, and there is only the FDTI
> connector, AVR (possibly socketed), LED and LDR (IIRC) above the board.
>
> The micro USB is below the board if used, I believe.
>
> We'll need to deal with buttons.  We don't have to use the Maplin ones and
> could try to find shallower devices to minimise case volume. (At a pinch
> for future revisions we could consider side acting ones mounted on the PCB
> for example.)
>
> Maybe if we get you an accurate series of high-red PNGs you could work
> from them for micro USB cutout placement, etc?
>
> I'm happy to try to do a box design session on whatever terms suit you.
>
> Rgds
>
> Damon
>
> On 20 Oct 2013, at 20:18, Bruno Girin wrote:
>
> >
> >
> >
> > On 20 October 2013 19:35, Damon Hart-Davis <EMAIL ADDRESS HIDDEN> wrote:
> >   * BOM and how to deal with LDR, LED, AVR, RFM23, reg (link?)?
> >
> >   * Batteries vs USB supply count?
> >
> >   * ENIG finish
> >
> >   * Preallocation of initial runs to users and DHD R&D bench
> >
> >   * Run numbers (20 iTEAD/Bo, 30 PMS)?
> >
> >   * Box OpenSCAD/STL including fudge factors for 'overprint'.
> >
> > Fudge factor won't be too difficult. I'll do that sometime during the
> week. For the box, the best way would be to have a box design session with
> a real PCB and a pair of callipers.
> >
> >
> >
> >   * AVR/RFM RX code
> >
> >   * Power-on-self-test code suitable for Bo and PMS to use also.
> >
> >
> >
> >
> > --
> > Bruno
> > Visit my weblog: http://brunogirin.blogspot.com
>
>


-- 
Bruno
Visit my weblog: http://brunogirin.blogspot.com
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