EagleCAD for crazy dummies

A project log for The World's Tiniest 4x4x4 RGB LED Cube

Eventually, someone will make one even smaller. Please let me know when this is no longer the World's Tiniest 4x4x4 RGB LED Cube :-(

hari-wigunaHari Wiguna 11/29/2015 at 20:430 Comments

Although I've played with EagleCAD before, this is my first serious attempt to master it. After many days, it no longer feels like I'm holding a paintbrush with boxing gloves. But I'm far from having a direct connection between my brain and the canvas. If you have tips for me, I'm all ears.

The cube is connected to the Arduino via 16 I/O pins. Although I would like to design ONE multi layer PCB, the free version of EagleCAD only allows for two copper layers (top and bottom). Furthermore, because everything is so small, I only have room for one via or two traces between the LED pillar leads.

I was able to put the first eight wires on one PCB:

The next four wires on a second PCB:

And finally the last four wires are on a third PCB: