Experimenting with batteries, bulbs, buzzers, switches and other electrical components is a great way to learn about circuits and start to think about how to incorporate sounds into your Build a ...

Save guides, add subjects and pick up where you left off with your BBC account. Output devices such as motors, solenoids, bulbs, buzzers, relays, LEDs, and 7-segment displays are used in many ...

The circuit emits an audible warning tone from a piezo buzzer, or flashes an LED for each discharge ... with its relaxation optimised via the bias resistor values shown in the circuit diagram. The ...

Tapping a piezo buzzer gives an interesting waveform ... it’s easy to forget the simpler end of sound synthesis, using circuits rather than software. If you hanker for the Good Old Days ...

The functions of basic electronic components are revealed through a series of experiments as students figure out how to create circuits that light up LEDS, sound buzzers, use resistors to dim lights, ...