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Message from discussion Embedded Electronics Classes/Kits for Ingenuity
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Joe Logan  
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 More options Sep 4 2012, 11:18 am
From: Joe Logan <jd...@case.edu>
Date: Tue, 4 Sep 2012 08:18:00 -0700 (PDT)
Subject: Re: [makersalliance] Embedded Electronics Classes/Kits for Ingenuity

Joe,
What was the final verdict on the drawdio? Do you want me to order the
PCBs? I will work on getting gerber files made this afternoon. It probably
makes more sense for you to do the digikey/mouser order to avoid having to
mess with reimbursements.

-Joe L

On Sunday, September 2, 2012 2:28:36 PM UTC-4, Joe Gorse wrote:

> As per the rough schedule<http://wiki.makersalliance.org/display/MAB/Project+Management> plus
> a couple days, we have the written go-ahead for the $1800. Go ahead and
> pull the trigger on the orders we know we need. If unsure, confirm with Sam
> or I so we can track our progress and open tasks on the wiki.

> Next steps <http://wiki.makersalliance.org/display/MAB/Project+Management>are to prototype test in small quantities, come up with a plan to use those
> projects/components from our experience from playing with them Tuesday, and
> then place the large orders by Wednesday.

> I have re-organized our Ingenuity-related wiki pages under the Ingenuity
> Festival page<http://wiki.makersalliance.org/display/MAB/Ingenuity+Festival> (look
> for Site Contents to the right and Child Pages below) and added Project
> Management <http://wiki.makersalliance.org/display/MAB/Project+Management>page for convenience from prior content.

> The vision is to integrate these projects into individualizable and
> obnoxious lanyard badges for people to wear at the Ingenuity Festival.

> Cheers,
> Joe

> On Fri, Aug 31, 2012 at 12:40 PM, Sam Harmon <samuel...@gmail.com<javascript:>
> > wrote:

>> I did some number crunching, and I think we can make 100 work. It goes
>> over the funding by a little bit, but we'll be taking donations and
>> whatnot, so I think it'll be ok.

>> Now we just need to get the funding secured from Ingenuity…

>> Sam

>> On Aug 31, 2012, at 11:11 AM, Joe Logan wrote:

>> > In quantity 50, your BOM cost is going to rise 20-25% since all this
>> stuff is sourced from Digikey and Mouser. On the PCBs, you are looking at a
>> minimum order or 100 sq inches. Assuming these guys are about .5 x 2 in, it
>> works out to be a $200 minimum order, 1 wk turn, with a net of 100 PCBs.

>> > On Thursday, August 30, 2012 9:47:52 PM UTC-4, Joe Gorse wrote:
>> > Joe,

>> > How does changing the quantity to 50 affect the unit cost on the
>> drawdio?

>> > I would like to do a combination of Drawdio, the learn to solder badge
>> kit, and Diavolinos on a lanyard for the Ingenuity Maker/Hacker Badge. I
>> think this allows for a decent amount of flexibility and hackability,
>> though we may be a bit light on sensors and interface hardware yet.

>> > Cheers,
>> > Joe

>> > On Thu, Aug 30, 2012 at 10:18 AM, Joe Logan <jd...@case.edu> wrote:
>> > The drawdio is a tone generator that makes noises as the user draws on
>> paper using a pencil. I have not built or used one before, but there are
>> numerous videos up on youtube that provide a good demonstration of what it
>> is and what it does. I am all for doing more complicated and original kits
>> and projects, but I feel like the time limit until ingenuity fest means
>> that we should really be looking for a low risk, proven project such as
>> this.

>> > Benefits of the drawdio:
>> > -excellent instructions already available on the internet
>> > -open source schematic and PCB artwork in Eagle format
>> > -involves both audio (noise from speaker) and visual arts (drawing)
>> > -highly obnoxious
>> > -proven, low risk design
>> > -inexpensive BOM (few bucks each in volume)
>> > -easy to construct for soldering newbies (all thru hole components)
>> > -entertaining for adults/children/inebriated adults alike

>> > I put together a BOM with digikey and mouser part numbers, quantities,
>> and estimated per-component prices assuming medium volume (~200), which is
>> attached to this email. In order to purchase PCBs, someone will have to
>> download the Eagle board file, install the free version of Eagle, and cut
>> gerber files. I work with Malaysian PCB houses that can do either a 1 or 2
>> week turn with 2-day delivery.

>> > An additional note - I forgot to include a AAA battery on the BOM.

>> > On Wednesday, August 29, 2012 3:29:02 PM UTC-4, Sam Harmon wrote:
>> > Ok, here is my "mostly readymade" submission of a plan for the
>> Ingenuity kits:

>> > This plan gets us:
>> > A- a really quick & easy to put together thing that is cheap ($1.50
>> each in quantity, can sell for $2-$3, or just in exchange for a donation or
>> something)
>> > B- An "Arduino Enough" thing that hopefully keeps us in the spirit and
>> close enough to the letter of what we're supposed to be doing. If no one
>> buys them, we'll have a bunch of extra Arduinos to do workshops and crazy
>> stuff with in the future…
>> > Also: If people really want a morse code blinky thing:
>> http://brainwagon.org/2009/11/14/another-try-at-an-arduino-based-mors... which will blink the Diavolino's built-in LED.
>> > C- Some additional tools so people can put these together about a dozen
>> at a time...

>> > Learn to Solder Skill Badge Kit
>> > http://www.makershed.com/Learn_to_Solder_Skill_Badge_Kit_p/mkls01.htm
>> > 250 for $375 (+ $5 shipping), ships in 1-2 business days from
>> California (time to receive  1 week-10 days?)

>> > TOTAL FROM MAKERSHED: $380

>> > EMSL Diavolino (w/6&8pin header set)
>> > http://evilmadscience.com/productsmenu/tinykitlist/180-diavolino
>> > 7...@12.50 w/headers & 3AA battery holder ($937.50)

>> > Adafruit FTDI Friend - Not really for us to sell, just so we can
>> program the Diavolinos a few at a time, and maybe cope with one or two
>> walking off...
>> > http://evilmadscience.com/productsmenu/accessories/210
>> > 10@$15 each ($150)

>> > TOTAL FROM EMSL=$1087.50 (Free Shipping over $75, time to receive 1
>> week-10 days?)

>> > Parts-Express
>> > Stahl Tools SSVT Soldering Station (we already have 6 of these already)
>> > http://www.parts-express.com/pe/showdetl.cfm?partnumber=374-100
>> > 6@$15.98  = $95.88
>> > 60/40 solder, 1 lb
>> > http://www.parts-express.com/pe/showdetl.cfm?partnumber=370-032
>> > 2@$23.49 = 46.98
>> > Tip cleaner
>> > http://www.parts-express.com/pe/showdetl.cfm?partnumber=341-223
>> > $8.48
>> > TOTAL FROM PARTS EXPRESS: $162.69  (7.5% Ohio sales tax, free shipping,
>> total time to receive 1-2 business days)

>> > TOTAL COST: $1630.19, leaving us with about $170 for incidentals (AA
>> batteries for the Diavolinos?, more tools? anything else?)

>> > That's my thought, anyway.

>> > Sam

>> > --

>> > --
>> > Joe Gorse

>> > C: 440-552-0730
>> > T: jhgorse
>> > FB: jhgiv
>> > G+: jhgorse

>> > --

>> --

> --
> Joe Gorse

> C: 440-552-0730
> LI: Joe Gorse <http://www.linkedin.com/pub/joe-gorse/7/12/397>
> FB: jhgiv <https://www.facebook.com/jhgiv>


 
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