I'm trying to make a circuit that will turn off when i point a remote control at it and hit any button on it. Then when I do it again it turns the circuit back on. I don't really need the sensor to 'address' specific units separately. So basically the circuit will turn on/off with anything any button on the remote. I was told I needed something like a photoresistor? Could someone sort of give me a schematic or something along those lines? Thanks in advance.
You can try using also TSOP IR receivers they are easy to use. Check the circuit at the bottom. Just isolate it from the environmental light like covering its side with a black cover.
If you go that route this may work out for you. Get the receiver and the breakout board. Actually there was a time when Radio Shack sold the things. Uh, I just looked and go figure, Radio Shack.
If you want to use TSOPxxxx IR receiver you must first find out what carrier remote uses. Generally it can be in range from 30kHz to 40kHz. TSOPxxxx has build in selective amplifier and because of that the transmitt and receive frequencies must be the same.