Flip flop Flahser using ic 555

Traffic lights bit.ly/2Qf1ypy
flip flop using ic 555 bit.ly/2M1dnkH
8 led flahser ic 555 bit.ly/2M1dnkH
in this video I have made a flasher with 555 timer ic. in this project i have use 8 LEDSs these LEDs blink aftar one another
the speed of blinking can be changed with the change in capacitor or change in resistor which is connected with point 6 and 7.
full detail is given in the given above link