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

Tue Jul 7 14:23:29 EDT 2009

I'll take 2 + 1 breakout

On Mon, Jul 6, 2009 at 2:52 PM, Jesse Mejia <jmejia at tffenterprises.com>wrote:

> 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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