Circuito Integrado 555 Monostable, Astable, Timer 555 y Aplicaciones
Timer IC-555 | by Technology Robotix Society | AUTONOMOUS ROBOTICS | Medium
TLC551 IC Timer - CMOS 555 with 1V to 15V power, up to 1.8MHz [TLC551CP] : ID 5222 : $3.95 : Adafruit Industries, Unique & fun DIY electronics and kits