parallel port & breadboard

Guest
I have some LEDs, resistors, and a breadboard. I want to write a
program that will make the LEDs flash in certain sequence (they are
attached to the board.) i have to proper resistors and everything so i
won't damage anything (i hope). i want to connect the breadboard to the
PC through my parallel port, however, i am having a helluva time
finding a device to do this. can someone point me in the right
direction.

I am going to school for computer science. i am certainly no electric
engineer, but i hope to learn.

Thanks in advance,
Matt
 
In response to what <mmayers@gmail.com> posted in
news:1108334965.959453.67020@o13g2000cwo.googlegroups.com:

no no no... im running this on a linux system.
Click to expand...
In that case - just connect the LEDs to the printer data lines, in series
with 4k7 resistors to 0V and write to the port IO address.

--
Joe Soap.
JUNK is stuff that you keep for 20 years,
then throw away a week before you need it.
 
mmayers@gmail.com writes:

I have some LEDs, resistors, and a breadboard. I want to write a
program that will make the LEDs flash in certain sequence (they are
attached to the board.) i have to proper resistors and everything so i
won't damage anything (i hope). i want to connect the breadboard to the
PC through my parallel port, however, i am having a helluva time
finding a device to do this. can someone point me in the right
direction.
Click to expand...
Take a look at
http://www.epanorama.net/circuits/parallel_output.html


--
Tomi Engdahl (http://www.iki.fi/then/)
Take a look at my electronics web links and documents at
http://www.epanorama.net/
 
<mmayers@gmail.com> wrote in message
news:1108333365.788141.55630@g14g2000cwa.googlegroups.com...
I have some LEDs, resistors, and a breadboard. I want to write a
program that will make the LEDs flash in certain sequence (they are
attached to the board.) i have to proper resistors and everything so i
won't damage anything (i hope). i want to connect the breadboard to the
PC through my parallel port, however, i am having a helluva time
finding a device to do this. can someone point me in the right
direction.
Click to expand...

If you are looking for parallel port connectors designed specifically for
a breadboard, then have a look at the products at this site:

http://www.technologicalarts.com/myfiles/t3.html

HTH,

B.C.
 
have a look at
http://www.tinaja.com/glib/muse152.pdf
if you want to connect some more LEDs


have fun.
 
On 13 Feb 2005 22:46:22 GMT, Joe Soap <me@privacy.net> wrote:

In response to what <mmayers@gmail.com> posted in
news:1108333365.788141.55630@g14g2000cwa.googlegroups.com:

I have some LEDs, resistors, and a breadboard. I want to write a
program that will make the LEDs flash in certain sequence (they are
attached to the board.) i have to proper resistors and everything so i
won't damage anything (i hope). i want to connect the breadboard to the
PC through my parallel port, however, i am having a helluva time
finding a device to do this. can someone point me in the right
direction.

I am going to school for computer science. i am certainly no electric
engineer, but i hope to learn.

you will need to be running W95 or W98 or earlier (or DOS), W2000/XP lock
us out of our own parallel ports. Thanks a lot Bill.
Click to expand...
A free little application called userport gives direct access to
the hardware on NT/2K/XP. The below link has a couple simple demo
links where you can bitbang the parallel port on my XP machine.

http://www.geocities.com/zoomkat/status.htm
 
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