There is nary a microcontroller to be found on this circuit sculpture, which uses a pair of astable multivibrator(s) to light two sets of LEDs that represent air being inhaled and exhaled.

Consulting the Wikipedia page, we find that the addition of a diode to the typical 555 astable circuit lets us have duty cycles less than 50%, which we need to generate the pulses. The page also ...

An astable or free-running multivibrator, shown in Figure 7.1, is essentially a digital clock which has two momentarily stable states which alternate continuously thus producing square pulses as shown ...

But plenty of other products in common use rely on a bit of programmability to gain extra features and functionality. The personal astable multivibrator is one popular product with a long pedigree, ...

Lamps are commonly known as light bulbs. can be connected together to form a circuit. A circuit diagram shows how the components are connected. The following symbols show the different components ...

Adding more batteries to a simple circuit will increase the electrical energy, which will make a bulb brighter. Electricity can flow through the components in a complete electrical circuit.

Austin, Texas, is the home of the United States Grand Prix and Circuit of The Americas, the country’s only purpose-built F1 track. Construction began on Dec. 21, 2010, and it wasn’t until two ...