Please never plug or unplug anything from the board while it is powered, as it can damage it. 1. Download and install the arduino software: http://arduino.cc/en/Main/Software 1.1 in the arduino software Set Tools/Board to Arduino Mega 2560 1.2 in The…
Better endstop holders from Alex! http://www.thingiverse.com/thing:185250/ Thanks!
Check out this great Print Troubleshooting Guide on reprap.org
Here is a link for a great manual on the fan splitter installation.
Here are some Images about wiring Ramps 1.4.