Just the keys that fit the Molex. 2 on one end and one on the other end. On Saturday, August 10, 2019, Brian K. White <[email protected]> wrote:
> What do you mean by stubs? > > The notches cut out of the corners? > > There needs to be something to hold the pcb from sliding sideways. The pin > actually would do that well enough on one end, but since the pin is far to > one end, the other end would move too much (I think), and you don't want > two pins. So that little bit of skinnier pcb trapped between those vertical > edges at the ends is enough to do it. > And I think I will simplify that to just be 45 degree angles at the > corners instead of those little steps the way it is now. > That job could be done some other way, not just that way. There could be a > single notch in the middle of the ends, and matching ridge in the carrier, > and no walls at the corners of the carrier and no notches in the corners of > the pcb, for one possible example. > > If you didn't already have a developed design with a lot of work already > in it, and you were aiming to have all components on one side anyway for > other reasons like manufacuring, then the carrier would be both stronger > and effortless to make if the parts were all on top instead of bottom. The > pcb has to lay pretty close to the bottom of the socket and so there is not > much room between the pcb and the floor. Plus then you could have the hole > for the polarity pin as long as you could make room between the traces. The > pin doesn't extend above the pcb, so you can have chips over the hole, but > not under it. > > -- > bkw > > > > On 8/10/19 6:58 PM, Stephen Adolph wrote: > >> Thanks, >> Why do you have the stubs for the molex on this drawing? I would have >> thought that such things would be unneeded with the carrier. >> >> I have to take a close look at length. I think it can work but with >> changes. >> >> >> On Saturday, August 10, 2019, Brian K. White <[email protected] <mailto: >> [email protected]>> wrote: >> >> Here is a messy pdf >> http://tandy.wiki/images/c/c7/Pcb2molex8878_pcb_dims.pdf >> <http://tandy.wiki/images/c/c7/Pcb2molex8878_pcb_dims.pdf> >> >> >
