I need to build a sequential LED circuit that will have more than 10 LEDs in a sequence. The LEDs should blink only one at a time. I know I can do 10 LEDs with a 4017 decade counter easily, but I dont know how to go beyond 10 LEDs in a row. Say I need few tenths of LEDS, maybe 50 or 100 pcs.
I found a circuit with 2 4017s which does 16 LEDs - see here. It says the design can be expanded "indefinitely" by adding more 4017s but it is not clear to me how to do it. Also, it the "reset" circuit part necessary?