I've had a lot of help from you all on here, while I've been trying to make ir detection for my robot. I have been attempting to attach an ir sensors to each side of my robot, so it can home in on a beacon. I realise this is quite basic stuff to some of you, but it wasn't to me, so hopefully this will help someone in the future.
Some questions I had were,
1, Why is the ir modulated to 38khz?
2, How do I modulate the frequency to 38khz?
3, Do the receivers need modulating to 38khz?