home automation of door,lights and gate by using pc'parallel ports

Thread Starter

dachy12

Joined Oct 27, 2008
4
a help on the circuit diagram for home automation control of lights,door and gate by using the parallel ports of a pc
 

mik3

Joined Feb 4, 2008
4,846
It is better to use optoisolators between the parallel port and the devices you want to control as to avoid the possibility of destroyed the motherboard due to faulty external voltages.
 
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