Buzzer is a very simple sound making device, emitting "beep" sound through driving internal sound structure with current. Because of its low cost and stable performance, buzzer is widely used in electronic products as an operation prompt. You will often hear a beep when using a printer, phone, timer, or alarm.
The tone of buzzer is fixed. Howerer the frequency of sound can be changed to get different beeps by adjusting the input signal. In this way, you can turn a full melody into codes and make the buzzer sing.
Buzzer Card allows you to make sounds and music, or alerts when something interesting happens.It works by making use of a single I/O pins on a Carduino.
Longan Cards is a unique open source development platform designed by Longan Labs. As a plug and play development platform, Longan Cards allows you to quicky build wide array of prototypes and applications in no time. A full set of Arduino libraries and plenty of example codes are available to play with Longan Cards platform.