[Cyborg] Fwd: [Noisebridge-discuss] Re: March Digikey Bulk Order

Rachel McConnell rachel at xtreme.com
Mon Mar 23 13:15:21 PDT 2009


Now that has reminded me of all those PIR sensor boards upstairs... I'll
have a look tonight to see if those are reclaimable and/or suitable for
the eyes-in-back vest.

Daniela I don't think NB has much in the way of sensors other than
those, at least not to my knowledge.

R

daniela Steinsapir wrote:
>  is anybody interested in magnetic sensors? I would get like to include
> some.
>  
>  I haven't play with them yet, anybody has experience?
> 
>  what type of sensors NB has?
> 
> D
> 
> On Mon, Mar 23, 2009 at 12:53 PM, Rachel McConnell <rachel at xtreme.com
> <mailto:rachel at xtreme.com>> wrote:
> 
>     I'm gonna be at NB tonight and will at least work out what I want from
>     digikey and add it to the order page.  Lamont, I don't really understand
>     this well enough to tease out a set of things to order but maybe someone
>     else tonight can do so, or help me with it.
> 
>     As you probably saw, Jason's going to do the bulk order tomorrow, not
>     today, so there's a bit of time to get ourselves sorted.
> 
>     R
> 
>     Lamont Lucas wrote:
>     >
>     > Please add one more to the order for me, and I'll work with you on
>     > surface mounting the thing.  I have a hot-air rework station that will
>     > be useful for undoing whatever we mess up.  I've used a toaster
>     oven for
>     > SMT reflow, but I'd like to do this with a regular hot-plate, as I
>     think
>     > that method is superior.
>     >
>     > We'll need to either order an adapter PCB for the PLLC-20 (aka
>     LPCC-20),
>     > or make a custom one.  The board I have from sparkfun for the
>     Honeywell
>     > HMC1052L is a 4 pin-per-side 16-pin-LLC.  I'm capable of designing and
>     > ordering the adapter board, but I wouldn't get a chance to do it till
>     > tuesday night at the earliest, and I'm out of town for a week starting
>     > friday.
>     >
>     > This solderless socket might help with the prototyping:
>     > http://www.chiptool.net/adapter/plcc-1.htm
>     >
>     > That 1052L chip, by the way, I spent the weekend trying to use.
>      Unlike
>     > the HMC5843, the HMC1052L requires a 400 mA pulse for 2 uS to
>     clear out
>     > any lingering magnetic fields, which requires an h-bridge or at
>     least a
>     > totem-configured pair of FETs.  I started wiring it up, but after I've
>     > added an h-bridge chip, 2 capacitors, two resistors etc, the resulting
>     > cost and bulk make me think that I should have just started with
>     the $19
>     > 5843, rather than "saving" via the $8.50 1052L.
>     >
>     > That BUB board looks nice, although I'm still super happy with my FTDI
>     > cable, just for compactness's sake.
>     >
>     > Adam Skory wrote:
>     >> I want to order two of the HMC5843 3-axis compass chips in the hope
>     >> that someone will help me figure out how to surface mount the damned
>     >> things.
>     >>
>     >> (
>     >>
>     http://parts.digikey.com/1/parts/1599656-sensor-magnetic-3-axis-20-lcc-hmc5843.html
>     >>
>     >> )
>     >>
>     >> Anyone else want some? It would be good to add them to today's
>     digikey
>     >> bulk order.
>     >>
>     >> Also, I'm looking at getting some RBBB kits and a couple USB BUB
>     >> boards, separately from the digikey order, but it would good also to
>     >> know how many of those we should get.
>     >>
>     >> ( http://moderndevice.com/RBBB_revB.shtml and
>     >> http://www.moderndevice.com/connect.shtml )
>     >>
>     >> -Skory
>     >>
>     >>
>     >> ---------- Forwarded message ----------
>     >> From: miloh <froggytoad at gmail.com <mailto:froggytoad at gmail.com>>
>     >> Date: Mon, Mar 23, 2009 at 10:52 AM
>     >> Subject: [Noisebridge-discuss] Re: March Digikey Bulk Order
>     >> To: noisebridge-discuss at lists.noisebridge.net
>     <mailto:noisebridge-discuss at lists.noisebridge.net>
>     >>
>     >>
>     >> RE:  Digikey bulk order
>     >>
>     >> Correction:  didn't mean to suggest one needs to find dr_jesus on
>     IRC,
>     >> the directions for being included are posted on the wiki:
>     >> https://www.noisebridge.net/wiki/Digikey_Bulk_Order
>     >>
>     >>
>     >>
>     >>
>     >> On Mon, Mar 23, 2009 at 9:40 AM, miloh <froggytoad at gmail.com
>     <mailto:froggytoad at gmail.com>> wrote:
>     >>
>     >>> Friendly reminder: the March Digikey is going out by the afternoon,
>     >>> contact dr_jesus in IRC to get in on the action.
>     >>>
>     >>> -rma
>     >>>
>     >>
>     >>
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> 
> 
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