[time-nuts] RS 232

[Chuck Harris]

I guess that depends on how much speed you want.
Techniques like this work fine up to 19.2K or so.
Which is what the OP was asking to do, as I recall.

I generally just use a max232 chip and live with
all of its warts.

-Chuck Harris

EWKehren at aol.com wrote:
> But do you get the speed
>
>
> In a message dated 7/26/2013 10:41:02 A.M. Eastern Daylight Time,
> cfharris at erols.com writes:
>
> I have  enclosed a sketch of the usual way of using opto's to make an
> RS232 like  interface.  I haven't spent much time thinking, so I am sure
> that I  have a few things backwards, but you should get the gist of how
> it is  done.
>
> It is only RS232 like because it has only a single  threshold.
>
> -Chuck Harris