Schematic design of the PWM circuit. For the sake of simplicity ... I at least hope you enjoyed this 555 timer tutorial. If you survive… look forward to more unreleased 555 timer projects ...

The 555 timer is one of the most versatile integrated circuits available. It can generate PWM signals, tones, and single-shot pulses. You can even put one in a bi-stable mode similar to a flip flop.