Proto CAPE board for beaglebone black

BeagleBone Black Expansion CAPE, Breadboard for prototyping.

1. BeagleBone Black connector : for connecting BeagleBone Black
2. DEBUG interface : for debugging BeagleBone Black, supports different serial modules
3. BeagleBone Black BOOT selection button : use it to boot from TF card
4. Empty solder pads and mounting holes : 2.54mm pitch, easy for electronic prototyping