Re: Opto-22
Posted by
Jon Elson
on 1999-10-12 12:42:47 UTC
"Arne Chr. Jorgensen" wrote:
You need to be able to sink at least 5, preferably 10 mA. There is a
5V common power source, and a series resistor, then the LED section
of the opto module, and then a pin where your driver connects.
A parallel port output works fine. Any standard TTL chip also works
fine. I used Grayhill relays and mounting boards from Digi-Key because
they were much cheaper.
Jon
> Well, you discussed some of the photos of Andrew's machine, andThe opto output modules are basically opto-isolators in big packages.
> some said something about opto relays and stuff. I just came to
> think of it. What is Opto-22 compatible ?
>
> I know it is some company that has made a bunch of stuff, and the
> ServoToGo board is supposed to be Opto-22 compatible. But what is it
> ?
>
> What is the source and sink specification, what kind of driver IC
> is there, what is the voltage levels, and such ?
You need to be able to sink at least 5, preferably 10 mA. There is a
5V common power source, and a series resistor, then the LED section
of the opto module, and then a pin where your driver connects.
A parallel port output works fine. Any standard TTL chip also works
fine. I used Grayhill relays and mounting boards from Digi-Key because
they were much cheaper.
Jon