Open Reprap Prusa i3 DIY 3D Printer Circuit Controlling Board Melzi Version 2.0 - Green + Black
The Melzi Version 2.0 for prusa i3 working voltage: 12V~38V controlling IC: Atmega1284p; FT232RL USB interface; with 4 piece A4988set stepper motors; can control MK1 MK2a MK2b MK3 and R1 hot bed; with TF card slot; support Offline Print