Some Arduino projects
NexaTx: Control Nexa tools using Arduino and a 433MHz transmitter
NexaRx: Receive Nexa remote using Arduino and a 433MHz receiver
AmpControl: Turn on amplifier when audio is detected on auxhiliary input to Amplifier Auxhiliary input is connected to arduino ADC input When ADC is sampling "high-level" signals the Arduino acts as a Nexa remote and turning on the Nexa wall plug (where the amplifier is plugged in)