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

[Jesse Mejia]

.04" maybe? What's standard?

On Sun, 5 Jul 2009 22:44:06 -0700
  "Greg Grunest" <greg 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-bounces at dorkbot.org
> [mailto:dorkbotpdx-blabber-bounces 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=ED22284-ND
>> &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.pdf show 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-bounces at dorkbot.org
> [mailto:dorkbotpdx-blabber-bounces 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 
><dorkbotpdx 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
> 
> 
> 
> _______________________________________________
> dorkbotpdx-blabber mailing list
> dorkbotpdx-blabber at dorkbot.org
> http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber
> 
> 
> 
> _______________________________________________
> dorkbotpdx-blabber mailing list
> dorkbotpdx-blabber at dorkbot.org
> http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber
> 
> 
>