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By btidey
#73211 The superhet receivers normally work well off a 3.3v supply which would then avoid any worry about signal levels.

In the rcSwitch mySwitch.enableReceive(0); the 0 identifies the interrupt to be used. Change this to the GPIO pin number you want to attach the RXData line to. 0 is probably not a good choice as it is one of the lines used during boot up.