LED RUNNER

Haii friends. today iam going to expalin how to make a led runner using ICNE555 in a simple way the circuit is shown here.we can add any no of led by adding IC CD4017

COMPONENTS
1:IC1-NE555
2:IC2-CD4017
3:RESISTER-10K(2),220ohm
4:CAPACITER-.01uf,2.2uf