have you the correct pin mapping for RAMPS-FD ? my search is : PIN RAMPS-FD V1 & V2 THERMISTOR 0 0 ANALOG THERMISTOR 1 1 ANALOG THERMISTOR 2 2 ANALOG THERMISTOR 3 3 ANALOG FET D8 8 OK FET D9 9 OK FET D10 10 OK FET D11 11 OK FET D12 12 OK FET D2 2 OK PS ON 53 OK MESSAGE LED 13 OK X MIN 22 OK X MAX 30 OK Y MIN 24 OK Y MAX 38 OK Z MIN 26 OK Z MAX 34 OK X Sby prophet_master - GCODE, Software e Firmware