something more documentary would not have been bad. Also on the side of SainSmart I have found nothing. I have not yet brought the mega module with the ramps and the display up and running. I downloaded the Marlin and tried to activate a few things in the Kofig, but the display is blank. At least one link and a scheme would not have been bad. On Youtube is a bit to find, but that can not replace the documentary yet. Otherwise, the boards are sealed in anti-static bags and everything stowed in a clean plastic box. Pins were not bent. Greeting