A common enhancement to this circuit replaces R2 with an inductor as shown in Figure 2. Figure 2 Substituting an inductor for R2 improves the piezo driver’s output and efficiency. Often the inductance ...

The flashing is thanks to LEDs with a built-in, integrated flashing circuit and the nasty noise comes from a piezoelectric buzzer — both are available from electronics stores that sell ordinary ...

The humble piezo disc buzzer is much more than something that makes tinny beeps in retro electronic equipment, it can also be used as a sensor. Tapping a piezo buzzer gives an interesting waveform,… ...

Play dough circuits 3: make fun sculptures Now that you've mastered some basic play dough electronics, apply your creative skills and produce your own shiny, flashy, beepy works of art.