Does your computer have a parallel port? There are tons of examples on
the web of how to do simple digital IO on the parallel port. Even if the
port itself is unidirectional, there are a couple of status lines (busy,
paper out) that can be read.
m
On Thu, 5 May 2005, Paul Coccoli wrote:
> I've been thinking about a way to interface a footswitch to my
> computer for triggering things like sooperlooper and fweelin. I've
> got a sustain pedal for my MIDI controller on the way, but it got me
> thinking. I've got a perfectly good serial port on the back of my
> computer, doing nothing. I'd like to put it to work, but my hardware
> skillz are, well, lacking.
>
> I've figured out this much: you can wire a simple loopback by
> connecting DTR to DCD and DSR and connecting RTS to CTS. What if you
> insert a switch between these? E.g. connect RTS to the sleeve pin of
> a female 1/4" TS jack and CTS to the tip pin. Could you then plug in
> a sustain pedal?
>
> I've seen software that monitors the state of the pins on the serial
> port, so I'm not worried about that part. I'm just not sure if the
> hardware would work. Like when the switch is open, do you connect CTS
> to ground? I don't know enough about this stuff.
>
> Any hardware hackers out there? Am I crazy? I suspect there's more
> to it than what I've said here. Could I wire up a TRS jack and a TS
> jack and plug in my amp footswitch (2 switches) and a sustain pedal?
>
>
Received on Fri May 6 08:15:05 2005
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