38 Simple Clock use sevseg.h print circuit board on PCBway

here the share project about simple clock : scheme grab from Mr. Rokhmad sragen...

and here the layout i retrace from original one. turn into double layer n make top down .

bug : the light no stable.. different each other.. need ressisor 220ohm between board  wire a b c d e f g



after click share n sell you got preview..
 ..

Refs

https://boboelectro.blogspot.co.id/2017/11/40-circle-dot-m4trix-led.html (download the board)
https://rokhmad.com