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

[Jesse Mejia]

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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