Posts Tagged ‘Buzz Beeper’:

2022-04-14 Watson’s Buzz Beeper

Watson’s Buzz Beeper I built this Buzz Beeper to find out if an audible tone could be used for sending simple commands, like turn on. Recently I built a microphone preamp with a bandpass filter that can detect my whistle. But it can be triggered by loud noise. So how about I generate a tone

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