This Design Idea employs the Microchip PIC10F222 single-chip microcontroller. You program this microcontroller’s internal memory using the MCLR pin. As the title, “Use the MCLR pin as an output with ...

There have been many different ideas presented for increasing the acoustic output of a piezo buzzer or ultrasonic transducer. Most of them involve rather complicated circuitry that drives up the total ...