Re: [M100] low profile pcb pins

[Brian K. White]

https://www.amazon.com/dp/B07S9JFK2V gold plated brass, 300ft, $14
or
https://www.amazon.com/dp/B07H9RBTPF   gold plated copper, 60ft, $5


It's actually kind of hard to tell for sure what many of the Amazon 
links are really made of. But this Aliexpress item at least explicitly 
says copper wire and real gold plating.

https://www.aliexpress.com/item/1005002047296739.html

I think brass would be a little better but maybe copper is strong enough.
I just did a mock-up test with some 23awg solid ethernet wire, and it 
uses 5.9mm of wire to make one leg.

https://photos.app.goo.gl/mQnsaH5LVoQW2RdJ6

Rounding up to 6mm, this is $1.80 for over 830 legs.

I'm going to do up a board with this wire just to see how it goes, even 
though you wouldn't want bare copper legs for real, and 23awg is thicker 
than what I'm hoping for with 26awg or at most 24awg.


Still I really don't have much problem with the TE leads. What's so hard 
about this?

https://photos.app.goo.gl/628cwKMSYWkbg9Eb7
The advantage of the wire is just cost, availability, and gold plating.

--
bkw

Re: [M100] low profile pcb pins

[Brian K. White]

On 2/27/21 8:12 PM, Jeffrey Birt wrote:

Or you can just use the 'Arduino' headers which are 1/6 the cost, don't have 
the shoulder, don't require a special PCB design, etc. etc.

Not to beat a dead horse but why try to reinvent the wheel?


I do like them the best so far, both because of no shoulder and because 
of gold plating. The legs are plenty long enough to just drop down 
through from the top and still leave enough length on top to make it 
easy to cut with flush-cutters.


If they are thin enough. I know they are thinner than square pins but I 
still haven't found a drawing to nail down what they exactly are.




But I just had a totally different idea...

For reference, let's get some actual numbers.
Here is a bog-standard DIP-28-600
http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en589327

See the B and C dimensions.
The legs are 0.20mm to 0.38mm thin, and 0.36mm to 0.56mm wide, and since 
it's rectangular the diagonal can be even a little more than 0.56mm, and 
we know these fit into round machined sockets and do not damage any 
sockets, leafe or round.


Common cheap machined round pins are 0.50mm wide, and fit in round 
sockets, and maybe possibly theoretically too thick for leaf sockets 
(they fit of course, but do they weaken the leaf? eh, probably not but 
who knows)


The TE-Connectivity leadframe pins are 0.25mm x 0.50mm, and cost $0.03 
per pin.

https://www.digikey.com/en/products/detail/te-connectivity-amp-connectors/1544210-2/4731536

Mill-Max and Keystone micro-pins are 0.43mm wide,
https://www.mill-max.com/products/pin/3121
https://www.keyelco.com/product.cfm/product_id/2999

And are $0.10 per pin.
https://www.digikey.com/en/products/detail/mill-max-manufacturing-corp/3121-2-00-15-00-00-08-0/436677

which is thinner than normal machined round pins yet still thicker than 
pcb legs. But, I say they are thin enough that they won't hurt any 
socket even theoretically. So taking that number as a reference for 
"good enough"...


For the cost of the micro-pins, and since they come loose in bags where 
you have to tweezer each one individually anyway, I just now thought of 
an option that is no more labor than micro-pins, gold plated, but 
ridiculously cheaper than even the tin TE leadframe pins:


You can get a lifetime supply of 0.40mm gold-plated brass or copper wire 
on spools for a few bucks.


- Just set the pcb on top of a machined round socket, maybe clamp it 
with a clothes pin or rubber band or tape etc so that it won't move 
while leaving both your hands free,

- poke the wire through the pcb down into the socket until it stops,
- cut,
- poke, cut, poke, cut... you have all 28 in less than a minute.

Soldering would be a breeze from the top, no further trimming needed 
when done soldering.


Plus little bonuses like, since the wire is round, it doesn't matter if 
you accidentally heat the solder after the leg has been trimmed and the 
leg rotates in the hole. If you break a leg it's nothing to replace it 
because it's not special. And freak unexpected bonus: no waste. Every 
single mm of wire is actually used.


And 0.40mm is even thinner than the micro pins. If that turns out to be 
too thin (too weak and just crumples) then you can get 0.50mm which is 
at least the same as common machined round pins, and still no wider than 
the wide dimension of legit DIP legs, without any shoulder or insulator, 
and probably actually better than machined pins because you can probably 
bend the wire at least once or twice before it breaks where the machined 
pins break immediately.


https://www.amazon.com/dp/B07S9JFK2V   gold plated brass, 300ft, $14
or
https://www.amazon.com/dp/B07H9RBTPF   gold plated copper, 60ft, $5

This is probably even less labor than the TE-Connectivity leadframes I 
use now, and those are tin plated instead of gold. The "comb" lets you 
work on a whole row of 14 at once, like those Arduino stackable headers, 
or the "flip" pins, but the amount of fiddling you have to do almost 
cancels that out where it's no quicker than individual pins.


I think the only thing to check out is if the different wire hardnesses 
matter. They make this wire in different hardnesses. Is the copper wire 
stiff enough? Through-hole component leads are stiff enough and they are 
just copper, or is the brass wire too brittle? Probably not, since it's 
meant to be wrapped into jewelry. And, is the gold plating actually gold 
or some kind of colored anodization, and is it really bare with no 
clearcoat? I think it's probably meant to be soldered and brazed so 
probably it is nice and bare.


I think 0.4mm (26 guage) wire in brass is probably going to be perfect.

This probably works best with a pcb designed with small holes just to 
fit the wire (maybe 0.55 or 6mm?), so that when you solder it, you don't 
have to gob so much solder in there that it ends up running down the 
leg. But should be doable even in huge holes (pre-existing boards).


Damn I can't wait to try this.

-

Re: [M100] mcomm on the Pinephone

[Brian K. White]

On 2/27/21 7:07 PM, Peter Vollan wrote:

Is mcomm something I can run on my linux box that is not an android?


There are Windows, Android, and most recently a python version. You can 
run the python version on pretty much anything.


For linux you can also use dlplus and LaddieAlpha.

http://www.club100.org/memfiles/index.php?&direction=0&order=&directory=Kurt%20McCullum

https://github.com/bkw777/dlplus

http://bitchin100.com/wiki/index.php?title=LaddieCon#LaddieAlpha


In fact you can even use the old original DOS DeskLink on linux from 
dosbox. Not that I recommend it but just saying it actually works.

http://club100.org/catalog.html#hotsetup (download DL-ARC.EXE)

--
bkw

Re: [M100] low profile pcb pins

[Jeffrey Birt]

Or you can just use the 'Arduino' headers which are 1/6 the cost, don't have 
the shoulder, don't require a special PCB design, etc. etc.

Not to beat a dead horse but why try to reinvent the wheel?

Jeff Birt

-Original Message-
From: M100  On Behalf Of Brian K. White
Sent: Saturday, February 27, 2021 6:58 PM
To: m...@bitchin100.com
Subject: Re: [M100] low profile pcb pins

> https://www.evilmadscientist.com/2016/fliptronics-flip-pins/
Those would be perfect if they just didn't have that big pointless 
blade/shoulder thing preventing it from being low profile. But even with it, 
they are almost ideal.

I guess you could design a pcb with the components on the bottom, occupying the 
space that the shoulders provide instead of on top.

--
bkw

Re: [M100] low profile pcb pins

[Brian K. White]

https://www.evilmadscientist.com/2016/fliptronics-flip-pins/ 
Those would be perfect if they just didn't have that big pointless 
blade/shoulder thing preventing it from being low profile. But even with 
it, they are almost ideal.


I guess you could design a pcb with the components on the bottom, 
occupying the space that the shoulders provide instead of on top.


--
bkw

Re: [M100] mcomm on the Pinephone

[Joshua O'Keefe]

On Feb 27, 2021, at 4:08 PM, Peter Vollan  wrote:
> Is mcomm something I can run on my linux box that is not an android?

There are two versions of mComm: the original is a Windows and Android thing.  
I don't know much more about it as I don't run either Windows or Android.  
There is also a second version which is Python and it runs on pretty much 
anything.  I got it up and running on both a Linux box and on a Mac without any 
trouble.

Re: [M100] mcomm on the Pinephone

[Peter Vollan]

Is mcomm something I can run on my linux box that is not an android?


On Sat, 27 Feb 2021 at 06:50, Alex ...  wrote:

> LaddieAlpha is C# and might run on Mono, if you can get a package for that.
>
> On Fri, Feb 26, 2021 at 7:23 PM Hiraghm  wrote:
>
>> Where can I find the python version of mcomm?
>>
>> I'd like to give it a try on my Pinephone running Mobian Linux.
>>
>>
>>
>
> --
> Disclaimer: Any resemblance between the above views and those of my
> employer, my terminal, or the view out my window are purely coincidental.
> Any resemblance between the above and my own views is non-deterministic.
> The question of the existence of views in the absence of anyone to hold
> them is left as an exercise for the reader.
> The question of the existence of the reader is left as an exercise for the
> second god coefficient.  (A discussion of non-orthogonal, non-integral
> polytheism is beyond the scope of this article.) Thanks /usr/games/fortune
>

Re: [M100] low profile pcb pins

[RETRO Innovations]

On 2/27/2021 4:24 PM, Mike Stein wrote:
Don't know how the cost compares with Jim's but all things considered 
those look like probably the best solution.


Yeah, if you are doing low quantity through hole headers, you just 
cannot beat the deal there.


Jim

Re: [M100] low profile pcb pins

[Mike Stein]

Don't know how the cost compares with Jim's but all things considered those
look like probably the best solution.

So many choices for Steve... ;-)

m

On Sat, Feb 27, 2021 at 4:56 PM Jeffrey Birt  wrote:

> Those are basically a fancy shaped Arduino header pins. I just bought 200
> 8-pin, long stackable Arduino headers for $21.95 delivered which comes out
> to $0.014/pin. The pins I get are just a shade larger than IC pins in both
> directions and work in both normal leaf sockets and turned pin sockets.
>
>
> https://www.ebay.com/itm/200x-Arduino-8-Pin-Stackable-Female-Shield-Headers-Tall-Breadboard-Stacking-USA/150721147532
>
>
>
> Jeff Birt
>
>
>
>
>
> *From:* M100  *On Behalf Of *MikeS
> *Sent:* Saturday, February 27, 2021 3:47 PM
> *To:* m...@bitchin100.com
> *Subject:* Re: [M100] low profile pcb pins
>
>
>
> Our friend Al K suggested some "Flip Pins' in response to Steve's query on
> VCF; they look interesting, $.09/pin:
>
>
>
> https://www.evilmadscientist.com/2016/fliptronics-flip-pins/
>
>
>
> m
>
>
>
>
> - Original Message -
>
> From: "RETRO Innovations" 
>
> To: 
>
> Sent: Saturday, February 27, 2021 3:19 PM
>
> Subject: Re: [M100] low profile pcb pins
>
>
>
> > On 2/27/2021 12:20 PM, Mike Stein wrote:
> >> Yeah, many people use those for this application and I even have some,
> >> both DIP and SIP, but the thickness of the pins on the ones I've been
> >> able to find is more than an IC leg and they don't fit well into
> >> machined pin sockets; are yours thin enough?
> >
> > I feel they are. And, they fit into machine pin sockets.
> >
> > I've used them in commercial products for 15 years, and no complaints,
> > even after folks reverted back to non machine pin ICs.
> >
> > I don't think one has to be exactly as thin as an IC pin (they make IC
> > pins just thick enough to handle the force of pushing into a socket, no
> > more :-), but rather no larger than the expected width a leaf socket
> > expects.
> >
> >>
> >> And I don't use the component carriers as is; I extract the pins while
> >> watching a baseball game or some other mindless distraction and then
> >> insert them from the top through the pcb, trimming off the forks after
> >> soldering. Admittedly, I wouldn't want to do 100 pcbs in one sitting
> >> that way...
> >
> > Yeah, I can see that as viable for very small batches, but I get ROM
> > adapters and such assembled in batches of 100 or 200 at a time. The
> > cost to handle it that way would be prohibitive to the hobbyist nature.
> >
> > I do agree the regular square pins available at most electronics
> > connector houses are too wide, they spread the leaf socket out too
> > much. As has been noted, the cheaper Arduino male-female headers you
> > can buy on eBay work great as well. They are about .1mm thicker than
> > the IC pin thickness.
> >
> > Jim
>

Re: [M100] low profile pcb pins

[Jeffrey Birt]

Those are basically a fancy shaped Arduino header pins. I just bought 200 
8-pin, long stackable Arduino headers for $21.95 delivered which comes out to 
$0.014/pin. The pins I get are just a shade larger than IC pins in both 
directions and work in both normal leaf sockets and turned pin sockets.



https://www.ebay.com/itm/200x-Arduino-8-Pin-Stackable-Female-Shield-Headers-Tall-Breadboard-Stacking-USA/150721147532

 

Jeff Birt

 

 

From: M100  On Behalf Of MikeS
Sent: Saturday, February 27, 2021 3:47 PM
To: m...@bitchin100.com
Subject: Re: [M100] low profile pcb pins

 

Our friend Al K suggested some "Flip Pins' in response to Steve's query on VCF; 
they look interesting, $.09/pin:

 

  
https://www.evilmadscientist.com/2016/fliptronics-flip-pins/

 

m

 




- Original Message - 

From: "RETRO Innovations" <  
go4re...@go4retro.com>

To: <  m...@bitchin100.com>

Sent: Saturday, February 27, 2021 3:19 PM

Subject: Re: [M100] low profile pcb pins

 

> On 2/27/2021 12:20 PM, Mike Stein wrote:
>> Yeah, many people use those for this application and I even have some, 
>> both DIP and SIP, but the thickness of the pins on the ones I've been 
>> able to find is more than an IC leg and they don't fit well into 
>> machined pin sockets; are yours thin enough?
> 
> I feel they are. And, they fit into machine pin sockets.
> 
> I've used them in commercial products for 15 years, and no complaints, 
> even after folks reverted back to non machine pin ICs.
> 
> I don't think one has to be exactly as thin as an IC pin (they make IC 
> pins just thick enough to handle the force of pushing into a socket, no 
> more :-), but rather no larger than the expected width a leaf socket 
> expects.
> 
>>
>> And I don't use the component carriers as is; I extract the pins while 
>> watching a baseball game or some other mindless distraction and then 
>> insert them from the top through the pcb, trimming off the forks after 
>> soldering. Admittedly, I wouldn't want to do 100 pcbs in one sitting 
>> that way...
> 
> Yeah, I can see that as viable for very small batches, but I get ROM 
> adapters and such assembled in batches of 100 or 200 at a time. The 
> cost to handle it that way would be prohibitive to the hobbyist nature.
> 
> I do agree the regular square pins available at most electronics 
> connector houses are too wide, they spread the leaf socket out too 
> much. As has been noted, the cheaper Arduino male-female headers you 
> can buy on eBay work great as well. They are about .1mm thicker than 
> the IC pin thickness.
> 
> Jim

Re: [M100] low profile pcb pins

[RETRO Innovations]

On 2/27/2021 3:15 PM, Mike Stein wrote:
Unfortunately the board illustrated goes into the system ROM socket 
and I think the extra height of the plastic carrier would raise it too 
high; if I had the room I'd rather use it for a socket for the EPROM.

Yeah, I thought the height would be the larger concern.


Ran across a pic of some other IC adapters I use from time to time, 
mostly yours; thought you might get a kick out of seeing them used:


Hey!  I know those!

I *might* be able to talk to the suppliers about some type of even 
thinner "carrier" option.  Some of these suppliers seem willing to do 
custom designs, though it's typically 5K minimum order (not horrible, 
just need to consider how one might use the products).


Jim

Re: [M100] low profile pcb pins

[MikeS]

Our friend Al K suggested some "Flip Pins' in response to Steve's query on VCF; 
they look interesting, $.09/pin:

https://www.evilmadscientist.com/2016/fliptronics-flip-pins/

m

- Original Message - 
From: "RETRO Innovations" 
To: 
Sent: Saturday, February 27, 2021 3:19 PM
Subject: Re: [M100] low profile pcb pins


> On 2/27/2021 12:20 PM, Mike Stein wrote:
>> Yeah, many people use those for this application and I even have some, 
>> both DIP and SIP, but the thickness of the pins on the ones I've been 
>> able to find is more than an IC leg and they don't fit well into 
>> machined pin sockets; are yours thin enough?
> 
> I feel they are. And, they fit into machine pin sockets.
> 
> I've used them in commercial products for 15 years, and no complaints, 
> even after folks reverted back to non machine pin ICs.
> 
> I don't think one has to be exactly as thin as an IC pin (they make IC 
> pins just thick enough to handle the force of pushing into a socket, no 
> more :-), but rather no larger than the expected width a leaf socket 
> expects.
> 
>>
>> And I don't use the component carriers as is; I extract the pins while 
>> watching a baseball game or some other mindless distraction and then 
>> insert them from the top through the pcb, trimming off the forks after 
>> soldering. Admittedly, I wouldn't want to do 100 pcbs in one sitting 
>> that way...
> 
> Yeah, I can see that as viable for very small batches, but I get ROM 
> adapters and such assembled in batches of 100 or 200 at a time. The 
> cost to handle it that way would be prohibitive to the hobbyist nature.
> 
> I do agree the regular square pins available at most electronics 
> connector houses are too wide, they spread the leaf socket out too 
> much. As has been noted, the cheaper Arduino male-female headers you 
> can buy on eBay work great as well. They are about .1mm thicker than 
> the IC pin thickness.
> 
> Jim

Re: [M100] low profile pcb pins

[RETRO Innovations]

On 2/27/2021 12:20 PM, Mike Stein wrote:
Yeah, many people use those for this application and I even have some, 
both DIP and SIP, but the thickness of the pins on the ones I've been 
able to find is more than an IC leg and they don't fit well into 
machined pin sockets; are yours thin enough?


I feel they are.  And, they fit into machine pin sockets.

I've used them in commercial products for 15 years, and no complaints, 
even after folks reverted back to non machine pin ICs.


I don't think one has to be exactly as thin as an IC pin (they make IC 
pins just thick enough to handle the force of pushing into a socket, no 
more :-), but rather no larger than the expected width a leaf socket 
expects.




And I don't use the component carriers as is; I extract the pins while 
watching a baseball game or some other mindless distraction and then 
insert them from the top through the pcb, trimming off the forks after 
soldering. Admittedly, I wouldn't want to do 100 pcbs in one sitting 
that way...


Yeah, I can see that as viable for very small batches, but I get ROM 
adapters and such assembled in batches of 100 or 200 at a time.  The 
cost to handle it that way would be prohibitive to the hobbyist nature.


I do agree the regular square pins available at most electronics 
connector houses are too wide, they spread the leaf socket out too 
much.  As has been noted, the cheaper Arduino male-female headers you 
can buy on eBay work great as well.  They are about .1mm thicker than 
the IC pin thickness.


Jim

Re: [M100] low profile pcb pins

[Mike Stein]

Yeah, many people use those for this application and I even have some, both
DIP and SIP, but the thickness of the pins on the ones I've been able to
find is more than an IC leg and they don't fit well into machined pin
sockets; are yours thin enough?

And I don't use the component carriers as is; I extract the pins while
watching a baseball game or some other mindless distraction and then insert
them from the top through the pcb, trimming off the forks after soldering.
Admittedly, I wouldn't want to do 100 pcbs in one sitting that way...



On Sat, Feb 27, 2021 at 11:40 AM RETRO Innovations 
wrote:

> On 2/27/2021 12:33 AM, MikeS wrote:
>
> 
> Also:
>
>
> https://www.peconnectors.com/component-carriers/hws16187/
>
>
> Not trying to shill for profit, but I had lots of trouble finding
> reasonably priced headers that did not have forked tops (like the above),
> since I wanted to slide a PCB over the tops for projects I do.  So, I buy
> these in 1000s and offer them in the store.
>
> http://store.go4retro.com/ic-header/
>
> They may yet be too tall (I think they are the same height as the PE
> Connector option above, but not Stephen Adolph's super low height one).
>
> Jim
>
>

Re: [M100] mcomm on the Pinephone

[Joshua O'Keefe]

On Feb 26, 2021, at 4:23 PM, Hiraghm  wrote:
> Where can I find the python version of mcomm?

Kurt offers a deb package but I have repackaged it for non-Debian use and keep 
a copy on my S3 bucket:  http://public.nachomountain.com/files/m100

Re: [M100] low profile pcb pins

[RETRO Innovations]

On 2/27/2021 12:33 AM, MikeS wrote:


Also:
https://www.peconnectors.com/component-carriers/hws16187/ 




Not trying to shill for profit, but I had lots of trouble finding 
reasonably priced headers that did not have forked tops (like the 
above), since I wanted to slide a PCB over the tops for projects I do.  
So, I buy these in 1000s and offer them in the store.


http://store.go4retro.com/ic-header/

They may yet be too tall (I think they are the same height as the PE 
Connector option above, but not Stephen Adolph's super low height one).


Jim

Re: [M100] low profile pcb pins

[MikeS]

Why not just order a few? Here's a place with no minimum order as far as I can 
see:

https://www.elliottelectronicsupply.com/catalogsearch/result/?q=carrier&x=29&y=21&order=relevance&dir=desc
  - Original Message - 
  From: Stephen Adolph 
  To: m...@bitchin100.com 
  Sent: Saturday, February 27, 2021 8:50 AM
  Subject: Re: [M100] low profile pcb pins


  Mike, those look very useful, but to know if I can use it in this case I'll 
need to find a drawing and see what the height is.
  thanks for the tip!


  Steve



  On Sat, Feb 27, 2021 at 1:32 AM MikeS  wrote:

Also:



https://www.peconnectors.com/component-carriers/hws16187/
  - Original Message - 
  From: Stephen Adolph 
  To: m...@bitchin100.com 
  Sent: Friday, February 26, 2021 11:32 AM
  Subject: Re: [M100] low profile pcb pins


  this is what I am using today.  works really well, should have bought 
hundreds of them! 






  On Fri, Feb 26, 2021 at 8:51 AM Stephen Adolph  
wrote:

Greg, thanks for that, and I hope you feel better soon! 
I counted and I have enough pin headers to build a grand total of 12 
more REX# NEC/M10.  then that's it.

Steve


On Fri, Feb 26, 2021 at 8:46 AM Greg Swallow  wrote:

  Steve, 

  I should have some of what I use to make system ROM sockets fom T102. 
Am in VA hospital for a day or two. Took a dizzy fall at work and gotta find 
out why. Hope to be home by Sat and will dig up what I got and let you know. 

  I believe they were 1x20 @ 2.54mm spacing. No longer in my eBay 
purchase history. 

  God Bless, 

  GregS <>< 



  Feb 26, 2021 5:55:48 AM Stephen Adolph :

Hi folks. 
I'm struggling to find a good pcb pin for building REX# NEC/M10. 


I have tried working with those leadframes, but I find it difficult 
to work with them.  I have to file them down so that the pins don't catch, and 
they don't work on machine sockets either. 



https://www.te.com/usa-en/product-1544210-2.html 




Can someone recommend a good low cost low profile solder machine 
pin? 


What I have today is absolutely perfect, but I can't find any more. 
 It is a 28 pin DIP header based on machine pins that has a really thin plastic 
frame.  So the module plugs in and sits almost directly flush to the host 
socket. 


thx 
Steve 

Re: [M100] mcomm on the Pinephone

[Alex ...]

LaddieAlpha is C# and might run on Mono, if you can get a package for that.

On Fri, Feb 26, 2021 at 7:23 PM Hiraghm  wrote:

> Where can I find the python version of mcomm?
>
> I'd like to give it a try on my Pinephone running Mobian Linux.
>
>
>

-- 
Disclaimer: Any resemblance between the above views and those of my
employer, my terminal, or the view out my window are purely coincidental.
Any resemblance between the above and my own views is non-deterministic.
The question of the existence of views in the absence of anyone to hold
them is left as an exercise for the reader.
The question of the existence of the reader is left as an exercise for the
second god coefficient.  (A discussion of non-orthogonal, non-integral
polytheism is beyond the scope of this article.) Thanks /usr/games/fortune

Re: [M100] low profile pcb pins

[Stephen Adolph]

Mike, those look very useful, but to know if I can use it in this case I'll
need to find a drawing and see what the height is.
thanks for the tip!

Steve

On Sat, Feb 27, 2021 at 1:32 AM MikeS  wrote:

> Also:
>
>
> https://www.peconnectors.com/component-carriers/hws16187/
>
> - Original Message -
> *From:* Stephen Adolph 
> *To:* m...@bitchin100.com
> *Sent:* Friday, February 26, 2021 11:32 AM
> *Subject:* Re: [M100] low profile pcb pins
>
> this is what I am using today.  works really well, should have bought
> hundreds of them!
>
> [image: 20210226_112228.jpg]
>
> On Fri, Feb 26, 2021 at 8:51 AM Stephen Adolph 
> wrote:
>
>> Greg, thanks for that, and I hope you feel better soon!
>> I counted and I have enough pin headers to build a grand total of 12 more
>> REX# NEC/M10.  then that's it.
>> Steve
>>
>> On Fri, Feb 26, 2021 at 8:46 AM Greg Swallow  wrote:
>>
>>> Steve,
>>>
>>> I should have some of what I use to make system ROM sockets fom T102. Am
>>> in VA hospital for a day or two. Took a dizzy fall at work and gotta find
>>> out why. Hope to be home by Sat and will dig up what I got and let you know.
>>>
>>> I believe they were 1x20 @ 2.54mm spacing. No longer in my eBay purchase
>>> history.
>>>
>>> God Bless,
>>>
>>> GregS <><
>>>
>>> Feb 26, 2021 5:55:48 AM Stephen Adolph :
>>>
>>> Hi folks.
>>> I'm struggling to find a good pcb pin for building REX# NEC/M10.
>>>
>>> I have tried working with those leadframes, but I find it difficult to
>>> work with them.  I have to file them down so that the pins don't catch, and
>>> they don't work on machine sockets either.
>>>
>>> https://www.te.com/usa-en/product-1544210-2.html
>>>
>>>
>>> Can someone recommend a good low cost low profile solder machine pin?
>>>
>>> What I have today is absolutely perfect, but I can't find any more.  It
>>> is a 28 pin DIP header based on machine pins that has a really thin plastic
>>> frame.  So the module plugs in and sits almost directly flush to the host
>>> socket.
>>>
>>> thx
>>> Steve
>>>
>>>
>>>
>>>