The Traffic Light Hack

 

The Disclaimer

First off, an obligatory disclaimer:

Hey, you! Listen up! Connecting your computer's parallel port to a circuit that has 125 volts of AC current running through it is a bad idea. If you accidentally cross wires fry your motherboard, it's not my fault. And don't run with scissors.
Comments:
You could use a simple opto isolator for that purpose.
 
Post a Comment

<< Home

Archives

May 2005  

This page is powered by Blogger. Isn't yours?