Technical descroption for the stepper motor NEMA 17 wantai 42BYGH609
Technical descroption for the stepper motor NEMA 17 ACT MOTOR 17HS4417
Here you find the technical description for the RepRap stepper driver with the DRV8825 circuit.
Here you will find a technical description of the RepRap RUMBA controller board for 3d printers.
Here you will find the technical description for the combination of the Arduino Mega 2560 with the RAMPS 1.4 shield as controller for RepRap 3d printers.
Here you find the technical description for the Bulldog XL Extruder of Reprapdiscount.
This description shows how the current for running the stepper motors with the DRV8825 board can be adjusted.