this is my 3dprinter that i want to make but with some different in structer such as iron chassis and 4 stepper mottor for it's z axis because i want to add auto bed leveling in real format and not make a auto bed leveling in mesh graph in software I like a real bed level and also I want to use a 32bit processor becaus I saw some problems in 8bit processor(e.g. Arduino mega2560 with atmega2560 microcontroller).