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Paralelle port interface finally done

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bluedude2288

Member
Joined
Sep 17, 2002
I finally finished hooking up leds to the paralellel port. I will be making a guide soon so look out!
 

KILLorBE

Member
Joined
Mar 28, 2001
Location
The Netherlands
Crazy Jayhawk said:
The movie file on that page doesn't work. WMP says "No combination of filters could be found to render the stream."

Works fine here, you're probably using ancient codecs:D

But what do those LEDs do? just blink?

**EDIT** BTW your codecs don't have to be ancient, AVI sucks a lot, Codec X lets you view AVI A but doesn't let you view AVI B and visa versa.
 

FireMogle

Member
Joined
Apr 24, 2001
Location
Lawrence, KS
Im wondering that too, can you program the lights? I have actually looked around for somthing that is programmable, but couldent find it.
 
OP
bluedude2288

bluedude2288

Member
Joined
Sep 17, 2002
Yeah you need a avi codec, and the leds are programmable, i can control each individualy from my pc, i wrote the code, that is just one of the codes i designed, its a led chaser
 

Annoyingrob

Member
Joined
Feb 5, 2001
Location
Calgary, Alberta, CanaDuh
you can hook up to 12 leds to the parallel port. There are 8 outputs, plus 4 bidirectional pins. I one built one of these, and had a few qbasic programs that would do patterns with the 12 lights.
 
OP
bluedude2288

bluedude2288

Member
Joined
Sep 17, 2002
hey, do you know anything about multiplexing, i am building a computer run train set, and currently am looking at the circuit that does 64 bits and i kinda want more, but don't want it hard
 

Annoyingrob

Member
Joined
Feb 5, 2001
Location
Calgary, Alberta, CanaDuh
you don't want it [H]ard?
lol, ok, bad joke.


Seriously though, i do know a fair ammount about electronics, but to devise a multiplexer circuit off the top of my head, that may be a little trickey. What specifically do you need? I would assume to switch back and forth multiple locations, that would require a latched output, so all of the rails dont go back to default when you send a signal :p. As for the number of outputs, 128 could be done ralatively simply, by using 4 register bits instead of threee like the link says.

What exactly do you want? how many outputs? LPT port I assume.