Build Your Own SLA/SLS

every time I try to upload marlin to the board it just hangs for ever.. lost sorry

thank you is it ok to have two endstops max height and min?

hi all new to the group ... ive been following this group for a while now and in that time ive been building a dlp 3d printer my problem is no matter how much I read I cant get the light bulb in my head to turn on when it comes to setting up marlin or sprinter. and how to get the z axis going... im ...