2 layers27 × 20 mm

BINARY RIPPLE
Gabouin/BINARY-RIPPLE_RESOLUTION-IC
After looking for examples on Google, I had the idea to make like a Binary counter with LEDs. I am going to use an NE555 and CD4020.
35 parts2MIT
Boards in 1 GitHub repository, designed in KiCad, that use the CD4020S by GR (0℃~+60℃ 14 3V~15V 4MHz、10MHz、12MHz 500mW 75ns CD4000 Divide-by-2 Falling Edge Reset function Up Counter SOP-16 Counters, Dividers ROHS). See how each wires it, with its parts, size, README and files; the CD4020S’s symbol, footprint and pinout are on its own page.

Gabouin/BINARY-RIPPLE_RESOLUTION-IC
After looking for examples on Google, I had the idea to make like a Binary counter with LEDs. I am going to use an NE555 and CD4020.