The SW-420 Vibration Sensor will detect large disturbances and send the data to the Arduino. The occurrence and strength (Intensity) of the vibrations will be displayed on an LCD screen.

I need two buzzers alternating on / off on one pin. Is it possible to get ‘opposite’ transistors in series? One that grounds when the base goes high, one that grounds on low?

The SW-420 Vibration Sensor will detect large disturbances and send the data to the Arduino. The occurrence and strength (Intensity) of the vibrations will be displayed on an LCD screen.