Excellent information Jonathan!
I generally carry the s100computers and many RetroBrew board and have
ordered over 5000 boards from PCBCart.com
I'm not a board designer but if people have any questions about PCB Cart
and the board ordering process, feel free to contact me privately.
Todd
On 1/19/2022 1:14 PM, Jonathan Chapman via cctalk wrote:
Mike,
We use PCB Cart for boards with hard gold edge contacts, like our DEC
prototyping board, Apple II protoboard, XT-IDE, etc. They are the same Chinese
board house used by s100computers.com and N8VEM/RetroBrew Computers. Results
are pretty good for the price.
Expect to order 25 to make hard gold edge plating worthwhile. It'll pretty much double the price of
the board, but PCB Cart does proper selective hard gold, not "heavy ENIG" (not a thing)
or some other nonsense. A lot of the cheaper places will only plate "hard gold" over
ENIG, which I assume means they don't actually have a selective process at all.
Make sure to specify an edge chamfer if it's a typical card edge connector,
otherwise it'll be routed square and a little difficult to insert/you'll have
to dress it down with a file.
If practical for the board, remove unused contacts from the edge connector.
They charge per-contact as a way to guesstimate their gold costs.
Thanks,
Jonathan
‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Wednesday, January 19th, 2022 at 12:05, Mike Katz via cctalk
<cctalk@classiccmp.org> wrote:
Johnathan,
I saw you will be ordering boards pretty soon.
I need to order some boards for my PDP-8/E but I've never ordered boards
before.
What board house do you use? Have you ever specified gold fingers before?
Any advice would be greatly appreciated.
Thanks,
Mike
+1 (773) 414-1044
On 1/19/2022 9:49 AM, Jonathan Chapman via cctalk wrote:
Chris,
I'm probably going to order some of these on my next circuit board order (this week or
next), do you want a set of them? Seems they are of course "hacking required,"
which is fine by me :P
Thanks,
Jonathan
‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Wednesday, January 19th, 2022 at 10:24, Chris Elmquist via cctalk
cctalk@classiccmp.org wrote:
On Wednesday (01/19/2022 at 03:35PM +0100), Jos Dreesen via cctalk wrote:
On 19.01.22 13:15, Jonathan Chapman via cctalk wrote:
That's a neat board! Where can I/we order one?
With me...
20 Eur for the set of 2 + shipping.
If you are in the US it is probably cheaper to order new ones locally.
Note that I never completed the documentation or wrote the code for the hex
keyboard.
But it does run the Tektronix board-bucket BASIC via serial port !
Find more on ftp://ftp.dreesen.ch/TEK_BB
ah ha! that's what I was looking for. Will check it out in detail.
I think I am "forum challenged" as all I could see at the original link
were renderings of the board.
Thanks Jos. Maybe this will be the ticket...
Chris
Chris Elmquist
