PicoMite: driving a passive buzzer

Author	Message
phil99 Guru Joined: 11/02/2018 Location: Australia Posts: 2561	Posted: 12:24pm 28 Nov 2022       One I have used (from an old microwave oven) was very fussy about the frequency. Quite loud at resonance. Sweep the PWM from 400Hz to 2kHz or so to find the loudest point.