Wirelessly Triggering a transistor

[sl1solo76]

I use my computer a lot for watching movies and at night i really don't like getting up and having to manually hit the power switch, so i was thinking it could be possible to do it wireless.

Now i have a general concept here, maybe an IR reciever going to the base, a line feeding from the power supply somehow connecting to the collector, and the emitter tied to the PS_ON line. Connecting the +v from the power supply and the PS_on is the same as pushing the power button.

The only thing is I am not sure how to make the receiving LED trigger the transistor... directly hooking it up sounds way to simple...

any ideas? or IS it that simple?

 

[zeitghost]

Simplest way is to use an encoder/decoder pair...

You need an encoder to generate a pattern that only the decoder will respond to, rather than all the IR devices in your bedroom (tv, video, dvd player etc etc).

Holtek do some suitable encoder/decoder pairs, HT12A, HT12D, HT12E, HT12F...

Download the datasheets from their site & see if they are suitable.