Improved thermo couple support.

Second thermo couple supported

Support for 6 stepper drivers

SMD fuses and MOSFETs

Extra MOSFET, making 4 regular MOSFETs and one for heated bed.

Support for the new DRV8825 Pololu stepper drivers

The board can be powered from 12V1 (12V MAX), by setting a jumper

The LCD contrast can be adjusted with a trimpot

12V1 has a diode to protect against reverse polarization

The 5V line is protected by a 500mA resettable fuse

A piezo is included to allow the printer to give feedback with sound

Each stepper driver slot has a breakout to connect external stepper drivers to the board.

Four layer high quality PCB board