LED Chaser with 80 channels | How to cascade 4017 ICs together
You can order this PCB from PCBWay company:
https://www.pcbway.com/project/shareproject/LED_Chaser_with_80_channels.html
Circuit & Parts list: https://mousa-simple-projects.blogspot.com/2021/03/led-chaser-with-80-channels.html

#LED_Chaser
#4017