It’s not the worst transgression, but it stems from our discomfort with analog circuits. Luckily, [Ray] published an illustrated guide on building multivibrator circuits. This is a simple method ...

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.

and switching circuits. In this chapter we discuss the three types of multivibrators, the 555 Timer, and the Schmitt trigger. Sinusoidal oscillators are discussed in Chapter 10. An astable or ...