Voltage Change = Execute Script/Program

[Lea Gris]

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/
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