Well, the circuit above is only a modulator. You must make the transmitter circuit separately, or a simple IR LED could be connected to the circuit. In the latter case, the range will be upto 10 metres.
Acoustic Tractor Beam
Yes! I will be extending the instructable to describe in detail various applications of the remote control, and there you can find it.
The question has a trivial answer, or it is not clearWhen the transmitter transmits positive voltage or lights up an IR LED, it is considered an 'on' signal. Otherwise, it is considered an 'off' signal
Beer Can Jet Engine: Mk II
2-channel Remote Control without IC[Good for helicopters!]