Arduino Mega board mount for Kossel Mini

This mounts in the triangle either on top or on the bottom of the Kossel Mini. It is designed to give enough clearance for the USB and power plugs to be able to plug in without adding stress to the board.
If the board needs to be more secure than having just one screw, hot glue or a rubber washer could be used on the posts. In some places even a 3mm nut could be used. I have found, however, that it is plenty secure without any of that.