[fahadshihab], a young tinkerer, shared his circuit design for a simple remote control using 555 timers. Using a 555 calculator, he designed a clock circuit that would run at 11.99 Hz.

If you’re not familiar with the 555 timer, suffice it to say that this versatile integrated circuit is probably ... In this mode, applying a voltage to the CONTrol pin allows you to modulate ...