Voltage Change = Execute Script/Program

[Tod Merley]

>
> Date: Mon, 13 Feb 2006 12:39:42 +0100
> From: Lea Gris <lea.gris at noiraude.net>
> Subject: Re: Voltage Change = Execute Script/Program
> To: Ubuntu Help and User Discussions <ubuntu-users at lists.ubuntu.com>
> Message-ID: <43F06FFE.1000606 at noiraude.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Tod Merley wrote:
> >> Date: Sun, 12 Feb 2006 19:11:21 -0500
> >> From: Phillip Susi <psusi at cfl.rr.com>
> >> Subject: Re: Voltage Change = Execute Script/Program
> >> To: Ubuntu Help and User Discussions <ubuntu-users at lists.ubuntu.com>
> >> Message-ID: <43EFCEA9.50307 at cfl.rr.com>
> >> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> >>
> >> Tod Merley wrote:
> >>> Hi All!
> >>>
> >>> If you wanted to or do use an external voltage change (say was +5
> volts
> >>> D.C. - Now is 0 Volts D.C.) to trigger a script or other program how
> >>> would or do you do it in Ubuntu?
> >>>
> >> Voltage of what?  Please try to be more specific with your questions,
> >> that one is rather vague so we have no idea what you're talking about.
> >
> >
> > Hi Phillip!
> >
> > Thanks for the response.
> >
> > The voltage change (yet to be designed - lots of flexibility here - for
> > example we could make it +12vDC @ 300ohms <+12vDC at 300ohms> = high and
> -12vDC
> > @ 300ohms <+12vDC at 300ohms> = low  as in classic RS-232 or we could use a
> > "pull up" resistor into a CMOS/TTL type device.
> >
> > The voltage change would come from an operator button press.
>
> Get a joystick, break it in parts and put the buttuns at custom places.
> Then program it via SDL joystick api.
>
> For hardware design with input and output. Look at parport device.
>
> Though you are not specific about what you want to do. Chances are there
> are pre made hardware and standard designs and library/drivers for what
> you want. That is impossible to tell because you just talk about very
> low level stuffs.
>
> --
>      Léa Gris - http://www.noiraude.net/
> ()   Campagne du ruban texte brut contre les courriels en HTML,
> /\   contre les pièces jointes dans un format propriétaire.


Hi Lea!

What I have been considering for the joystick possibility is to
"electrically hack" how one works (look at the standard, design circuitry
which would be compatable, be happy).  It is a good idea and I very much
appreciate the reference to the connecting software.

I am also considering using the paralell port (printer port).  Probably a
better choice for me since I would start with used and very limited
computers to get the ball rolling.
I certianly have run across a lot of people  who would wish to sell me thier
hardware solution (see http://www.bb-elec.com/ and look for serial data
acquistion for example - or simply google computer data acquisition).  I
have used the B&B modules in my carrier as a broadcast technician and had
excellent results controlling satellite recievers and broadcast transmitters
and gathering signal strength data.  But this is kind of a "hobby project"
with big dreams.

Many thanks for your help!

Tod
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