[dorkbotpdx-blabber] Synth chip (SN76477) Group Order

Jesse Mejia jmejia at tffenterprises.com
Mon Jul 6 17:52:28 EDT 2009 

The group order is hangin out. I'm going to place it early next week 
around the same time as the usual group orders. I'm hoping for more 
takers so we can potentially get a discount.

So far the tally is:

Laen - 4
Eric -  4 + 1 breakout
Alex - 6
Dan - 2
Don - 3
Michael 2 + 1 breakout
Thomas - 2
Me - probably 2 + 1 breakout

That puts as at 25.. any more takers? (no idea where or if there is 
going to be a price break)

Greg did you want some? Did I miss your request?

-Jesse



On Mon, 6 Jul 2009 14:13:49 -0700
  Donald Delmar Davis <ddelmardavis at gmail.com> wrote:
> Not that this isnt facinating but ...
> 
> What's the status on the group order part of this thread?
> 
> 
> On Jul 6, 2009, at 2:10 PM, Jesse Mejia wrote:
> 
>> Yeah - nice one! That was seriously an unusually hard piece of info 
>> 
>> to track down!
>>
>> On Mon, 6 Jul 2009 13:54:59 -0700
>> "Greg Grunest" <greg at grunest.com> wrote:
>>> Where did you find that?  I looked on the web for another half hour 
>>> 
>>> figuring
>>> it would be easy to find.  Oh well.  I bow down to your web 
>>>searching
>>> skills!  Maybe you can find my old college girlfriend and that guy  
>>> who owes
>>> me money. -----Original Message-----
>>> From: dorkbotpdx-blabber-bounces at dorkbot.org
>>> [mailto:dorkbotpdx-blabber-bounces at dorkbot.org] On Behalf Of Laen
>>> Sent: Monday, July 06, 2009 1:50 PM
>>> To: dorkbotpdx-blabber at dorkbot.org
>>> Subject: [dorkbotpdx-blabber] Re: Synth chip (SN76477) Group Order
>>> According to the data sheet, the pin spacing is .07" (versus the
>>> normal .1" pin spacing), and the Wikipedia page says the chip came 
>>>in
>>> a .6" wide DIP or a .4" wide DIP.  It looks like we're getting the
>>> second one, which would be a .4" DIP with .07" pin spacing.
>>> Pretty weird!
>>> -Laen
>>> On Jul 6, 12:45 pm, Jesse Mejia <jme... at tffenterprises.com> wrote:
>>>> .04" maybe? What's standard?
>>>>
>>>> On Sun, 5 Jul 2009 22:44:06 -0700
>>>>   "Greg Grunest" <g... at grunest.com> wrote:
>>>>
>>>>
>>>>
>>>> > Thanks for the clarification.  In looking at the board for the SN
>>>> >voice
>>>> > project (in the link you provided), you can clearly see in the
>>>> >picture the
>>>> > odd spacing of the SN76477 chip compared to the other ICs  around
>>>> >the 76477.
>>>> > It even looks like a copy of the BG Micro breakout board.  It must
>>>> >be some
>>>> > sort of .07" or .05" spacing on the chip pins.
>>>>
>>>> >From: dorkbotpdx-blabber-boun... at dorkbot.org
>>>> > [mailto:dorkbotpdx-blabber-boun... at dorkbot.org] On Behalf Of Jesse
>>>> >Mejia
>>>> > Sent: Saturday, July 04, 2009 8:46 AM
>>>> > To: A discussion list for dorkbot-pdx (portland, or)
>>>> > Subject: Re: [dorkbotpdx-blabber] Synth chip (SN76477) Group Order
>>>>
>>>> > The SN76477 was produced in 2 form factors - standard dip, and a
>>>> >narrower
>>>> > version. (0.4" row sapcing I believe)
>>>>
>>>> > The BG micro lady told me the chips they have in stock are the
>>>> >narrower
>>>> > version - she didn't specify the exact spacing but after doing  
>>>> some
>>>> >internet
>>>> > hunting it looks like they will likely be 0.4". She recommended  
>>>> the
>>>> >breakout
>>>> > board to solve this.
>>>>
>>>> >FYI today I found this socket at digikey:
>>>>
>>>> >http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail
>>>> >
>>> <http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=ED22 
>>> ...
>>>> >> &name=ED22284-ND
>>>>
>>>> > Which I believe will work. Maybe if enough ppl order them w/ the
>>>> >next normal
>>>> > dorkbot group order they'll be cheap!
>>>>
>>>> > I need to verify the pin spacing - so far all I know for sure is
>>>> >that the
>>>> > chips BG micro carries fit the little breakout board they also
>>>> >carry.
>>>>
>>>> >For what it's worth..  if anyone is interested in the SN voice
>>>> >project.. I
>>>> > *think* these pcbs are still available
>>>> >http://mypeoplepc.com/members/scottnoanh/smselectronicssnvoicepcboard/
>>>>
>>>> > These things accept both versions of the chip.
>>>>
>>>> > -Jesse
>>>>
>>>> > On Jul 3, 2009, at 3:31 PM, Greg Grunest wrote:
>>>>
>>>> > I was wondering if someone could tell me what the breakout board  
>>>> was
>>>> >for.
>>>> > The chip specs posted on the BGmicro
>>>> > sitehttp://docs.bgmicro.com/pdf/ics76477.pdfshow the IC as having
>>>> >standard
>>>> > 10th inch spacing (100mils x 600mils).
>>>>
>>>> > Has someone seen the breakout board?  Is there something I'm
>>>> >missing?  Do I
>>>> > really need it?
>>>>
>>>> > Should I have attended Don's class and then I could make whatever
>>>> >boards I
>>>> > wanted and therefore control the universe? (insert maniacal  
>>>> laughter
>>>> >here)
>>>>
>>>> > Probably.
>>>>
>>>> >  _____
>>>>
>>>> >From: dorkbotpdx-blabber-boun... at dorkbot.org
>>>> > [mailto:dorkbotpdx-blabber-boun... at dorkbot.org] On Behalf Of dan p
>>>> > Sent: Thursday, July 02, 2009 10:28 PM
>>>> > To: A discussion list for dorkbot-pdx (portland, or)
>>>> > Subject: Re: [dorkbotpdx-blabber] Synth chip (SN76477) Group Order
>>>>
>>>> > ah, thanks. Now that I have my mad board etching skills (thanx  
>>>> Don)
>>>> >I'll try
>>>> > to make my own...
>>>>
>>>> > On Thu, Jul 2, 2009 at 7:41 PM, Thomas Lockney
>>>> ><dorkbot... at dorkbot.org>
>>>> > wrote:
>>>>
>>>> > dan p wrote:
>>>>
>>>> > I think I missed the part about break out boards?
>>>>
>>>> >>From Jesse's earlier email:
>>>>
>>>> > Sweet! Yeah I'll go ahead and put together a group order for these
>>>> >little
>>>> > guys. I just called and checked stock - they have "plenty".
>>>> >Apparently the
>>>> > package is a little odd so there is also a $3 breakout board they
>>>> >offer for
>>>> > it. Let me know if you want it as well.
>>>>
>>>> >http://www.bgmicro.com/index.asp?PageAction=VIEWPROD
>>>> > <http://www.bgmicro.com/index.asp? 
>>>> PageAction=VIEWPROD&ProdID=12925>
>>>> > &ProdID=12925
>>>>
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