modular electronic units

I always hope I can keep organized when dealing with a variety of electronic modules without sacrificing flexibility. So I searched and modified this awesome little modular box design to fit my needs.

1.I increase the unit size to W50xL50xH20, so it fits an arduino nano or a small breadboard etc.

2.I change the connector location, so you only need to print one type of unit to create all expansion form.

Enjoy.