A while ago (late '80s, early '90s) I heard a suggestion for using copier toner as PCB etch resist
(draw on paper, copy onto overhead transparencies, iron onto the PCB).
Now that PCB layout software is available easily, as are laser printers, has anyone here tried
it? I'm wondering how well it would resolve for finer-pitch DIP/SIP packages, or if the etchant would eat
through the traces.
I know that this is sort of OT, but I also know that several folks who do
embedded development lurk here.
I have a possible application for an embedded controller with a fair amount
of RAM 128-256K and ideally, DMA capability. Originally, I considered
something like an 80C188, but it seems that that's yesterday's technology
and better alternatives exist.
Right now, the ARM controllers look pretty good. Can anyone recommend a
favorite development board that can be used for prototyping? I don't need
much program memory--128K is more than adequate, but at least 128K of RAM
is very important.
Cheers,
Chuck
Great News!!! The Houston Computer Museum has been give two great
collections, one in GA and one in KS. We need your help to cover travel
expenses (fuel and truck rentals) for these two trips to collect these
items, the estimated cost $1400 for GA and $1000 for KS (was cheaper trip
but more items were added). If you can send a small or large donation to
help, please send your check to our address below or go to our website
www.houstoncomputermuseum.org and our donation page there to use your credit
card. If just 240 people sent $10 each (or whatever amount (even $1 helps)),
we could add these wonderful items to our collections. Thanks for your time.
John
Here's a partial listing of what is being offered:
KS - SEL 810A computer, Data Control Station, Interface Cabinet, Dec LA12
printer, ASR-33 (2), manuals, software paper tapes, I/O cables, spare cards,
DEC PDP 11/03, DEC 11/34, PDP manuals, and other goodies. Over 2000 lbs, so
I need a 16' box truck.
GA - IBM 083 card sorter, IBM 552 card interpreter (2), 029 and 129 key
punches, IBM patch boards, repair parts for unit record equipment, Tektronix
scope, multiple SWTP systems, and other goodies. For this load I'm looking
at getting a 24' box truck.
Any and all help will be greatly appreciated. Thanks John
Mailing address Houston Computer Museum, 15827 Thistledew Dr., Houston, TX
77082.
I snagged a big old diablo daisywheel printer here the other day, pulled the
boards and mechanism out, and got rid of the case etc. right off, so
there's no model number, which I probably should've written down at
least :-(.
Anyhow, I'm finding good numbers on the transistors and such, but a lot of
the chips all have what seem to be diablo part numbers on them and not a
whole lot else. Anybody know where I might be able to cross some of this
stuff over to find out what it is?
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, a critter that can
be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
The results of your email command are provided below. Attached is your
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- Results:
Ignoring non-text/plain MIME parts
- Unprocessed:
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- Done.
The results of your email command are provided below. Attached is your
original message.
- Results:
Ignoring non-text/plain MIME parts
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- Done.
The results of your email command are provided below. Attached is your
original message.
- Results:
Ignoring non-text/plain MIME parts
- Unprocessed:
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- Done.
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original message.
- Results:
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- Done.
