PC board layout question - Sequential LED

Thread Starter


Joined Apr 18, 2007
I am trying to make a sequential LED flasher that has 5 LED's that bounces back on its self. What I mean to say is... if L1, L2, L3, L4, L5, are the LED's I want the sequence to be 1,2,3,4,5,5,4,3,2,1.

I am basing the copperlayout design on a flasher of 10 LED's 1,2,3,4,5,6,7,8,9,10 and thought that combining the appropriate outputs off off the 4017 IC would make it work. I do my copper layout design on MS Paint ( yeah I know its archaic) and then a print and etch technique.

Can anyone help?
Attached is the:
-circuit diagram
-original board layout that I found on internet that works quite well.
-and modified layout. that did not work.

Please let me know



Joined Jan 28, 2005
You may want to take a look at the freeware version of Eagle PCB at www.cadsoft.de. It has a schematic capture utility and a router that has limitation but it should prove more than adequate for you project.