riday, September 27, 2019 6:34:43 PM
> *To:* m...@bitchin100.com
> *Subject:* Re: [M100] REX carrier!
>
> Hi Fred,
> Unless I missed some detail, I think you need 3 new REX boards as well. I
> dont think there is a carrier that works with original REX. Could be wrong
> t
00.com
Subject: Re: [M100] REX carrier!
Hi Fred,
Unless I missed some detail, I think you need 3 new REX boards as well. I dont
think there is a carrier that works with original REX. Could be wrong though.
Maybe if you file down the REX board?
..steve
On Friday, September 27, 2019, Fred Wh
Hi Fred,
Unless I missed some detail, I think you need 3 new REX boards as well. I
dont think there is a carrier that works with original REX. Could be wrong
though. Maybe if you file down the REX board?
..steve
On Friday, September 27, 2019, Fred Whitaker wrote:
> I was very impressed by
I was very impressed by the project of a REX carrier. The post said that the
carrier could be made on a 3-d printer, which is wonderful. What about people
like me who don’t have access to that kind of printer. Is there anyone who is
willing to print some of them up for someone like me. I would
The scad file produces a version with no polarity enforcement. I don't want
to use it or promote it myself, but if you need it, the option is there.
I want to develop a standard, and I don't want to develop a standard that
doesn't include polarity.
But you can have whatever you want for
Brian would it be ok to just make the user have to orient the pcb in the
carrier?
Great to see this develop and evolve :-) Original Message Subject: Re: [M100] REX carrierFrom: "Brian K. White" To: m...@bitchin100.comCC: Early results for the new chamfer polarity pcb and carrier.There are a few things I need to adjust from here to get it as good as it can be,
Early results for the new chamfer polarity pcb and carrier.
There are a few things I need to adjust from here to get it as good as
it can be, but, I just got the pcbs that match two earlier carriers (one
with chamfer, one with a pin, but without the notches in the corners),
and they already
With all these little iterations testing different pcb versions of rex
and teeprom, I'm getting quite good at de-soldering!
I've removed all the parts from perfectly working rex's, and reinstalled
them on other pcb's several times now, using SRA's version of Chipquick.
Sculpteo has a higher
I think it's going to work.
This is an early version I just got in yesterday.
That is a microscopic mount of bite at the top-right corner, but, it's
not zero, and I have managed to increase that a little since then, I
hope, but mostly I just realized, that may just not be that big of a deal.
I've moved a little further since then.
I'm making frequent changes right now, because I'm trying to get that
over with as fast as possible so that it doesn't have to change any more.
I have the original design dialed-in and done, but this new version to
try to make a simpler pcb shape is
thanks Brian,
I'll take a close look and see what the extent of the changes would be to
adopt this.
cheers
Steve
On Mon, Aug 19, 2019 at 2:52 AM Brian K. White wrote:
> Steve,
>
> I think I have a pcb & carrier that might work better for you.
>
> I have to wait for the samples still, but here's
Steve,
I think I have a pcb & carrier that might work better for you.
I have to wait for the samples still, but here's what it looks like:
https://raw.githubusercontent.com/aljex/pcb2molex8878/cham/pcb2molex8878.png
On this one the pcb is a simple rectangle with no funky steps in the
corners,
I exported some gerbers out of kicad if thats of any use Steve,
https://github.com/aljex/pcb2molex8878/tree/master/PCB/gerber
--
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'm an idiot. You mean the 3 prongs. That's just another layer of the
kicad file that I included in the
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 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
Cable assemblies made of 40-wire rainbow ribbon with individual single
dupont pins on each wire are cheap all over the place on ebay and
aliexpress. You could get male-male 40-wire assemblies and just cut them
in half. every 3 wires would be a different set of 3 colors, and none of
them would
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
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 wrote:
> Here is a messy pdf
>
Good idea.
Would like to sort out how to purchase ready made 3 wire leads that plug
into a header...any ideas?
On Saturday, August 10, 2019, Brian K. White wrote:
> On 8/10/19 1:29 PM, Stephen Adolph wrote:
>
>>
>> With all the large parts on one side.. it is actually a bit hard to find
>>
On 8/10/19 1:29 PM, Stephen Adolph wrote:
With all the large parts on one side.. it is actually a bit hard to
find places for vias for external signals.
If there's nothing on top, you could just solder a surface mount header
on top. But then so much for simplifying the manufacturing.
Here is a messy pdf
http://tandy.wiki/images/c/c7/Pcb2molex8878_pcb_dims.pdf
If you are using the extreme corners, then maybe those notches just have
to go.
I could put a single notch in the middle instead. Or offset from center
so that it does double duty, polarization and trapping.
Or the
Brian, some comments
I can see the benefit of pcb retention and support, as well as installation
ease. Bad springs are still bad springs .. not much can be done there.
Dimensions would be super helpful thanks.
My original goal for all new designs was to have the major parts on the
same side to
I'm getting some dims out of kicad now. Take me a few minutes...
I think I'll add a layer for dims and print that.
The actual pcb doesn't have a chamfer at the corners, it has a tiny
step, but it's all so small, and the router radius is so large, that in
practical terms it might as well be a
An earlier version had pockets sized exactly for the flash and the two pins
for TP1 & 2. The current version just has a single big pocket leaving a
wall all around the perimeter to be more generic and allow other stuff, and
I moved tp1&2 to get inside that border. (and the border is marked in the
Update,
Took a close look at the latest. Looks great!
I like the retention clips that hold the PCB in place. That makes a lot of
sense.
Looks like you have already opened up the space on the carrier for parts
across the underside of the PCB-yes?
I dont use kicad; is there a board dimension
Brian,
I get that this carrier improves the look of the install but I dont see how
it improves operation. It doesn't improve contacts in my mind does it?
I've done so many installations of rex now...I think the spacer and ribbon
approach works fine. I agree that I have a lot of practice though.
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