The IR receiver used is intended for a 38 kHz carrier, but such receivers can and do respond to signals outside this frequency, although they do so at a reduced range.

Keeping your components out of sight is easy if you use an IR repeater to relay your remote control signals.

But IR hacks are loads of fun. We’ve seen a bunch here, from the classic camera shutter-release hack to a more general tutorials on cloning IR signals with Arduinos.

IR Receivers for Closed Cabinets In home theater applications, IR receivers are commonly used to control components in a cabinet with closed doors that obstruct the line of sight required by infrared.