I'm new to the Arduino and to this Forum. I hope someone can help.
I have just bought a 2 Pin Infra Red Emitter & 2 Pin Receiver. I have searched the web high and low and cannot find any diagram and/or sketches that use these (only found those with 3 pins). The component names are ir53l and bpw41n.
If you want to receive remote signals, you're much better off with the three pin devices, which do the 38kHz demodulation for you.
They are far, far easier to use than bare devices, which will need amplification and filtering.
OK, I'd ditch the emitter - it can probably be made to receive, but it'll be far more trouble than it is worth.
If you look at the Playground, there should be examples for connecting a photodiode, but expect a fairly insensitive device (i.e. you'll have to put the remote very close to the receiver) and plan on very tight code to ensure you catch all the 38kHz cycles.