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Building an LED Light Chaser with a 555 Timer Integrated Circuit (IC) and a Decade Counter IC (NO microcontroller needed!).

555 One Shot Basics of a 555 Timer IC and building a One Shot Timer.

555 Asychronous Using a 555 IC to generate sounds and clock pulses.

Decade Counter Using a Decade Counter IC.

Light Chaser Building a microcontroller free Light Chaser.