Thankyou very much for your help. This is indeed useful info. I might
need later, to do some projects with fast transfer rates, so this is
indeed an option I'll look into. :)
(Just in case someone else would need the info...)
Daniel R. Killoran told me...
You need, at minimum, two things:
1) A USB-interface chip or chipset, to communicate with the USB bus.
2) A controller chip to read and convert your pin values to something
the USB chipset can use. This can be a VERY simple chip, probably
pretty cheap, too. Motorola makes a lot of these, but since most of the
USB chipsets are Intel-based, you might want to look at them too.
There will, of course, be some minimal programming to do for both of
the above, plus some driver work in the Mac.
Hado Hein sent me this info:
Go to the website of the code mercanaries, they post here.
They have a USB board for ish 50 eus that does things like that.
Thankyou all, this solved my problem. =)
(Earlier searches on the net gave me results that would cost from $99
to $895, but I think I can afford the IO Warrior & friends!)
On Sunday, Oct 12, 2003, at 16:59 Europe/Copenhagen, Vincenzo
Kreft-Kerekes wrote:
There's a plethora of small USB-I/O interface PCBs out there (if you're
willing to deal with the sometimes substantial quirks of its
designers) or
you could simply roll your own. If you can spend the money on a PCB
and the
time to design and assemble it than you should check out the USB
peripherals
from Cypress Semiconductor, Texas Instruments and a few others.
They're very
easy to setup and work like a charm, requiring very little
hand-holding even
out to 480Mps transfer rates. You will usually have to add your A/D
converters unless you get yourself I believe an Analog Devices MCU
that has
some ADC/DACs on chip and connect it either to a USB peripheral, with
up to
40 digital I/O pins, or a USB slave FIFO.
{snip}
Love,
Jens
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