I'm after making a little Attiny85 based IR sensor which allow me to fire up my PC via IR remote from complete power off. Think pressing the IR key is the same as pressing physical power button :)
I've already got all the IR stuff working as I need but I'm not sure how best to make up the switch part. I've read a lot on using transistors or relays but I've been left a little confused at which is more suited.
As the normal PC button just acts to complete the circuit or short the connection on the motherboard header, my vision for the program was once the IR button is detected, to put a PIN (in my case using for no other reason that I am, I will figure the Attiny side after my breadboard Arduino version works as I need) as OUTPUT to HIGH for 2sec or so. This would then 'flick' the switch allowing / completing the connection from the motherboard header so turning the PC on.
What part is most suited to being the switch? and if you can, would you explain how its used and why its suitable?