RAMPS/Arduino Mount for T-Slot Extrusions

Just a simple mounting plate for an Arduino Due and RAMPS-FD that I plan on tucking behind the control panel (with graphical LCD and Raspberry Pi) in my Hypercube 300 build. It should also work with an Arduino Mega and RAMPS 1.x or most other combinations of an Arduino Mega or Due (or maybe a ReARM) and some other board.