O cenário
Designing an adjustable one-shot pulse generator to drive an LED strobe; a trigger button produces a clean 10–200 ms output pulse.
O que há neste desenho
Entenda as decisões por trás dele.
01
Use a 555 timer in monostable mode for reliable, predictable pulse width
02
Adjust timing with the R1/C1 network (10k–200k, 1uF) for 11–220 ms
03
Drive the LED through a series resistor from the 555 output
Reuse for debounced manual triggers, time delays, and LED pulse stretching where a non-retriggerable one-shot is suitable.