I saw the SparkFun pins a while ago. It was before I had rekindled my model T interest and had completely forgotten about them. I think they would be a neat addition to a variant of the REX board and an actual carrier. I think if I'm not mistaken the REX as it currently is designed is too long to fit in a carrier.
The other pins you linked at solutions cubed I've seen clipped on the edge of LCD displays but look interesting as possible variant. What's funny, I was seriously considering cutting the pins off some old IC's and putting them on a REX until I found the REX's physical dimensions are not the same as the plastic portion of the ROM's that ride in the carriers. On Thu, Sep 20, 2018 at 3:59 AM Brian White <bw.al...@gmail.com> wrote: > Holy cow cool... > > One of the significant challenges developing new devices to put into the > old devices is simply the physical pins. > > Standard common pins, whether square or round, are usually too big to work > (without damage) in most chip sockets, and in several instances there is > not enough vertical space available to remove a normal dip andnput in a pcb > with pin headers with shoulders. > > We resort to measures like: > http://tandy.wiki/Model_200_RAM > > I don't know how long these things have been around but, but just now is > the first time I ever saw them... > > https://www.sparkfun.com/products/14086 > > Dang that's a problem solver. > > For one thing I'm imagining a tweaked version of REX where these are > soldered to the top surface pointing straight out parallel with the pcb, > and after you remove the jigs you bend the pins down 90 degrees and put the > pcb right in to a real molex carrier (or a 3d printed copy, the files for 2 > versions are available, and at least one service, Shapeways, can produce > prints that work, so it's not limited to my supply of original ones). > > REX in a proper carrier. Polarity-keyed. No extraction ribbon. No spacer. > No risk of mangled socket pins from getting the spacer wrong. No flapping > copper flags possibly shorting between pins from the router cutting the > castellated half-holes. > > Same goes for the simpler Figtronix eprom adapter boards. > > These would also be useful for a main rom adapter that can still have room > for both a socket on the adapter and still keep the original socket on the > motherboard. And of course the example I mentioned above with the Model 200 > ram where there is just no extra vertical space available between the > socket and the enclosure door. > > Biggest problem is... how long will these actually be available? Those > edge clip-on dip legs were pretty cool too, but all I can do is look at > pictures of obsolete items you can't actually buy any more. > > Ok I guess you can get them, or something similar again... > http://www.solutions-cubed.com/products-page/connector/dip10/ > > Not sure, maybe you could get that to work for a REX too. > > The option to solder parallel to the top surface and then bend down really > makes a difference though when vertical room is tight. > > -- > bkq >
