[time-nuts] OT Prototype Boards

[Tom Miller]

Maybe it was a 2 mm pitch, a somewhat common size. Others that come to mind 
are 0.125 and 0.156 inches.

Tom

----- Original Message ----- 
From: "Bob Stewart" <bob at evoria.net>
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Sent: Tuesday, June 25, 2013 10:03 AM
Subject: Re: [time-nuts] OT Prototype Boards


OK, I see in the wiki that 0.1" is by definition 2.54mm. I was taught it was 
2.54001, but that's not right, either. But, if industry says that they're 
defined as the same, then I'm the one out of date. =) I wonder what was with 
that old prototype board. I can't find it, so it must be in a landfill, but 
it was just exactly the wrong size to fit a chip. You could get the first 
few pins in, but then the differences would be enough that no more would 
fit.

Bob




----- Original Message -----
> From: Orin Eman <orin.eman at gmail.com>
> To: Discussion of precise time and frequency measurement 
> <time-nuts at febo.com>
> Cc:
> Sent: Monday, June 24, 2013 11:35 PM
> Subject: Re: [time-nuts] OT Prototype Boards
>
> 0.1" is 2.54mm by definition these days.
>
> See: http://en.wikipedia.org/wiki/International_yard_and_pound
>
> Now whether the board really is 2.54mm is an entirely different matter...
> if it is, you should be fine with 0.1" pitch chips.
>
> Orin.
>
>
>
> On Mon, Jun 24, 2013 at 9:10 PM, Bob Stewart <bob at evoria.net> wrote:
>
>>  I need to get some largish prototype boards for my project. Has the
>>  industry standardized on a 0.10" pitch for hole spacing? IOW, if the
> ad
>>  says 2.54mm pitch will I get a board that will fit American chips, or 
>> will
>>  I just get something metric sized for the landfill? I ask, because
> I've
>>  got a prototype board sitting around here someplace that is unusable
>>  because the pitch isn't quite right. Needless to say, I'm ordering
> this
>>  from ebay from a seller in China or Hong Kong or someplace, points East.
>>
>>  Bob - AE6RV
>>  _______________________________________________
>>  time-nuts mailing list -- time-nuts at febo.com
>>  To unsubscribe, go to
>>  https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>>  and follow the instructions there.
>>
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to 
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>
_______________________________________________
time-nuts mailing list -- time-nuts at febo.com
To unsubscribe, go to 
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.