Remote control – 1: the receiver
== 1 == BUILD THE RECEIVER
a – cut the ending part of the headphone cable (i.e. , remove headphones)
b – connect the IR leds in place of the headphones (one led per channel)
That’s all, now you have an IR receiver. (Note: images refer to first attempt with a single LED connected once to a channel and then to the other till the correct one was found).
Or just buy one irDroid IR blaster: