On Thu, Nov 29, 2018 at 11:52 AM Eric Smith wrote:
> Sure, but that's just 0.05 to 0.125 microns of ENIG (electroless nickel
> immersion gold). That's not intended for mating surfaces, and will wear
> away after only a small number of connector cycles.
>
> For reliable edge fingers you need
On Wed, Nov 28, 2018 at 6:01 PM William Sudbrink via cctalk <
cctalk@classiccmp.org> wrote:
> 1) how do you specify the slightly beveled edge required for easy
> insertion?
>
2) is there some way to specify "hardened" or whatever plating for the
> connector traces?
>
Those have to be specified
On Wed, Nov 28, 2018 at 7:05 PM Chuck Guzis via cctalk <
cctalk@classiccmp.org> wrote:
> > 2) is there some way to specify "hardened" or whatever plating for the
> connector traces?
> My last order from OSHPark came with all traces gold-plated.
> Apparently, it's getting to be standard practice.
> On Nov 28, 2018, at 9:05 PM, Chuck Guzis via cctalk
> wrote:
>
> On 11/28/18 5:13 PM, Paul Koning via cctalk wrote:
>>
>>
>>> On Nov 28, 2018, at 8:01 PM, William Sudbrink via cctalk
>>> wrote:
>>>
>>> I'm not sure you're quite getting it... they say a picture is worth a
>>> thousand
On 11/28/2018 8:01 PM, William Sudbrink via cctalk wrote:
I'm not sure you're quite getting it... they say a picture is worth a thousand
words:
http://wsudbrink.dyndns.org:8080/images/20181128_194316.jpg
Assuming I make up some gerbers myself, two questions:
1) how do you specify the
On 11/28/18 5:13 PM, Paul Koning via cctalk wrote:
>
>
>> On Nov 28, 2018, at 8:01 PM, William Sudbrink via cctalk
>> wrote:
>>
>> I'm not sure you're quite getting it... they say a picture is worth a
>> thousand words:
>>
>> http://wsudbrink.dyndns.org:8080/images/20181128_194316.jpg
>>
>>
> On Nov 28, 2018, at 8:01 PM, William Sudbrink via cctalk
> wrote:
>
> I'm not sure you're quite getting it... they say a picture is worth a
> thousand words:
>
> http://wsudbrink.dyndns.org:8080/images/20181128_194316.jpg
>
> Assuming I make up some gerbers myself, two questions:
>
>
I'm not sure you're quite getting it... they say a picture is worth a thousand
words:
http://wsudbrink.dyndns.org:8080/images/20181128_194316.jpg
Assuming I make up some gerbers myself, two questions:
1) how do you specify the slightly beveled edge required for easy insertion?
2) is there some
On Wed, Nov 28, 2018 at 1:55 PM Fred Cisin via cctalk
wrote:
> In the late 1970's in the TRS80 world, there were MALE 34 pin card edge
> ribbon cable connectors! with gold plated fingers! (used on a short
> extension for drives in enclosures, and to convert expansion interface
> connections to
Are the adapters from dual row header to card edge wtill available?
(They were used to connect a 3.5" drive to a 5.25" drive cable)
Could you put two of those back to back connected by a header?
In the late 1970's in the TRS80 world, there were MALE 34 pin card edge
ribbon cable connectors!
Card Edge Connectors are PC Board to Wire Connectors. The 34-pin version was
popular for control board on 5-1/4” floppy drives in 1980s.
https://en.m.wikipedia.org/wiki/Edge_connector
I have not seen commercial PC board widgets used as an interconnect.
gb
==
Date: Tue, 27 Nov 2018 14:56:18
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