Piezo Buzzer [PS1240]
We have 4 units in our Sydney Warehouse available for immediate dispatch.
We can get a further 100 units in Australia from Adafruit. If you order today, we can dispatch this stock between Jul 31, 2021 - Aug 03, 2021.
Piezo buzzers are used for making beeps, tones and alerts. This one is petite but loud! Drive it with 3-30V peak-to-peak square wave. To use, connect one pin to ground (either one) and the other pin to a square wave out from a timer or microcontroller. For the loudest tones, stay around 4 KHz, but works quite well from 2KHz to 10KHz. For extra loudness, you can connect both pins to a microcontroller and swap which pin is high or low ('differential drive') for double the volume.